Adjustable shoulder coil

Abstract

Shoulder coil (100) with at least one coil element (101) for examining a patient (15) by means of a magnetic resonance device (10) comprising a patient table (17), wherein the shoulder coil (100) comprises an upper coil unit (110) and a base unit (120), wherein the base unit (110) is designed to be positioned on the patient table (17), wherein the base unit (120) has a multipole electrical interface via which the shoulder coil (100) can be electrically contacted, wherein the electrical interface is arranged in a form-stable manner on the base unit (120).

Description

[0001] The invention relates to a shoulder coil for examining a patient using a magnetic resonance device comprising a patient table, and to a magnetic resonance device.

[0002] In medical technology, imaging techniques are essential tools. Magnetic resonance imaging (MRI), also known as magnetic resonance tomography, is characterized by high and variable soft tissue contrast. In this procedure, high-frequency electromagnetic pulses are typically applied to a human or animal patient using a magnetic resonance device, exciting the patient's atomic nuclei. These excited nuclei emit magnetic resonance signals, which are received by local coils and transmitted to a processing unit of the MRI device. The processing unit then uses these received signals to generate images. Ideally, the local coils are positioned as close as possible to the patient during the examination, particularly during the reception of the magnetic resonance signals, to achieve the highest possible signal-to-noise ratio (SNR).to achieve the signal-to-noise ratio (SNR).

[0003] For different body regions of the patient, special local coils are typically used, such as a spinal coil for the spine and / or a shoulder coil for the shoulder. With previously known shoulder coils, the positioning of pain patients and / or immobile patients was often neglected, so that, in particular, pain-free patient positioning and / or pain-free positioning of the shoulder coil were often only inadequately possible.

[0004] The object of the invention is to provide a shoulder coil that enables a better, in particular more comfortable and / or less painful, examination of the patient's shoulder area using a magnetic resonance device.

[0005] The problem is solved by the features of the independent claims. Advantageous embodiments are described in the dependent claims.

[0006] Accordingly, a shoulder coil with at least one coil element is proposed for examining a patient using a magnetic resonance device comprising a patient table, wherein the shoulder coil includes an upper coil unit and a base unit. The base unit is designed to be positioned on the patient table; that is, it is intended that the base unit and the patient table are in direct mechanical contact with each other and / or touching each other during the examination.

[0007] The at least one coil element generally comprises at least one electrically conductive loop in which electrical voltages can be induced by magnetic resonance signals.

[0008] The patient can preferably be moved into a patient reception area of ​​the magnetic resonance imaging (MRI) device. Preferably, the MRI device has a patient table that is movable within the patient reception area.

[0009] The positioning of the base unit on the patient table can be supported by means of locking mechanisms, thus enabling a secure connection between the shoulder coil and the patient bed.

[0010] Typically, the base unit is positioned under the patient during the examination, particularly under a shoulder region of the patient, i.e., the patient's shoulder lies at least partially on the base unit.

[0011] During the examination, the upper coil unit is usually positioned above and / or to the side of the patient, particularly in the patient's shoulder region, i.e., the patient is at least partially under and / or next to the upper coil unit.

[0012] By using at least two units, namely the upper coil unit and the base unit, an individual geometric adaptation of the shoulder coil to the shape of the patient's shoulder can be achieved.

[0013] One embodiment provides that the base unit has a multi-pole, in particular pre-assembled, electrical interface via which the shoulder coil can be electrically contacted. The electrical interface is arranged in a dimensionally stable manner on the base unit.

[0014] Thus, the electrical interface can be mechanically and electrically connected by positioning the base unit on the patient table with a corresponding electrical interface that is dimensionally stable on the patient table.

[0015] Using such an interface for contacting the shoulder coil optimizes the patient examination workflow by eliminating, for example, any manual connection. Furthermore, it allows for very high reproducibility. Advantageously, the interface slides into the mating interface when the shoulder coil is positioned and is then immediately electrically and mechanically connected to the magnetic resonance imaging (MRI) device, thus ensuring precise positioning of the shoulder coils on the patient table. The resulting mechanical fixation also enables secure positioning of the shoulder coil and the patient without any tilting or wobbling movements.

[0016] A multi-pole interface typically comprises a connector, such as a plug, socket, or coupler, with two or more poles. One pole can, for example, comprise a plug contact. A dimensionally stable arrangement of the electrical interface on the base unit can mean, among other things, that the shape of the interface and / or its position relative to the base unit remains constant, particularly during a plugging operation.

[0017] Furthermore, using such an interface eliminates the need for cumbersome cables and prevents potential damage to cable sheaths. The elimination of hand-held connectors also reduces the risk of malfunctions caused by improper handling. Additionally, any existing hand-held connectors on the magnetic resonance device remain free and can be used for other local coils. Moreover, such an interface can be designed to be very compact, thus freeing up more space for the shoulder coil's electronics.

[0018] Preferably, the base unit comprises at least one coil element. This allows for particularly good reception of magnetic resonance signals emitted by the patient towards the base unit. In a simple embodiment, the base unit comprises a rigid housing in which the at least one coil element and any electronics are accommodated. Arranging the at least one coil element in a rigid housing offers the advantage that the at least one coil element can be shaped to completely encompass the housing, thus enabling seamless coverage.

[0019] In a further development of the invention, the shoulder coil comprises a flexible shoulder support unit arranged on the base unit. Advantageously, the shoulder support unit includes a support surface for a shoulder region of the patient, i.e., the patient's shoulder region can be at least partially supported on the shoulder support unit.

[0020] Advantageously, the shoulder support unit is designed to be flexible, meaning it exhibits high elasticity and / or is particularly easy to deform. This allows the shoulder support unit to conform well to the patient's contours. Preferably, the shoulder support unit comprises a foamed material that is especially flexible. A foamed material typically consists of a foam and / or multiple pores and / or inclusions, particularly air inclusions.

[0021] Preferably, the shoulder support unit comprises at least one coil element. This coil element can be embedded in the foamed material, i.e., it can be completely enclosed by it. Due to the flexibility of the shoulder support unit, the at least one coil element can adapt particularly well to the patient's contour, thereby achieving a good signal-to-noise ratio (SNR) of the magnetic resonance signals. In an advantageous embodiment, the shoulder support unit is arranged centrally on the base unit.

[0022] One embodiment provides that the shoulder support unit comprises a first support element and a second support element, wherein the first support element includes at least one coil element. The second support element, on the other hand, preferably does not include a coil element; that is, it is preferably designed without coil elements. For example, the second support element is simply a cushion. This allows for savings in coil elements, since often only one shoulder is examined. If both shoulders were examined simultaneously, the two shoulder areas would be positioned relatively far from an isocenter of the magnetic resonance device, resulting in poorer image quality. Therefore, providing coil elements on both sides is usually unnecessary.

[0023] Preferably, the position of the first support element relative to the second support element is determined based on the examination. In particular, the shoulder support unit can be divided into two halves, with the first half being covered by the first support element with at least one coil element and the second half by the second support element without a coil element.

[0024] The first support element can be positioned on either the left or right side of the base unit, depending on requirements, allowing for the examination of one of the patient's shoulders. Similarly, the second support element is located on the side of the base unit left unsupported by the first, to support the shoulder not being examined. That is, the first support element is advantageously on the left side if the second support element is on the right, and vice versa.

[0025] Preferably, the first and second support elements have the same, and in particular interchangeable, shape. The first and second support elements can therefore be identically shaped. This makes changing the support elements between two positions particularly easy. In particular, the first and second support elements are designed to be arranged symmetrically with respect to a sagittal plane of the patient.

[0026] In an advantageous variant, the first support element is rotatable about a rotational axis, wherein the rotational axis is aligned parallel to a longitudinal axis of the patient table in a positioned state of the base unit on the patient table.

[0027] The patient table typically has its greatest extent parallel to its longitudinal axis. The patient is usually positioned on the table so that a line of intersection of a sagittal plane and a frontal plane of the patient, and / or a normal of the patient's transverse plane, are essentially parallel to the longitudinal axis of the patient table.

[0028] By rotating the first support element around the aforementioned axis of rotation, the first support element can be folded from the left side to the right side of the base unit, and vice versa. Of course, before such a folding action, the second support element is advantageously removed from the base unit to provide the necessary space and thus enable the folding action in the first place.

[0029] It is conceivable that the shoulder coil comprises a flexible cable, in particular a flexible printed circuit board, which electrically connects the first support element to the base unit. The cable is designed to be flexible, particularly with regard to its geometry and / or shape, so that the first support element can be arranged differently relative to the base unit without interrupting the electrical connection. The shoulder coil can, in particular, include a film hinge via which the first support element is connected to the base unit.

[0030] The shoulder coil can also include an intermediate connector designed to electrically connect the first support element to the base unit. In particular, the intermediate connector can comprise a connector with a first and second connector part, the first connector part being located on the base unit and the second connector part being located on the first support element. This allows, for example, the first support element to be removed from the base unit, rotated 180° about a normal to a lying surface of the patient table, and then reattached.

[0031] Another embodiment provides that the shoulder coil includes at least one side unit which is movable parallel to an x-axis relative to the base unit.

[0032] Preferably, in a positioned state of the base unit on the patient table, the x-axis is aligned perpendicular to the longitudinal axis of the patient table and parallel to a lying plane of the patient table.

[0033] This allows the patient to be positioned comfortably and ideally painlessly on the examination table. During this positioning, at least one side unit is in a position relative to the x-axis, parallel to the center of the table, for example, by being located near an outer edge of the table. Advantageously, in this position, the side unit does not obstruct the patient's positioning. After the patient is positioned, the side unit can be moved parallel to the x-axis towards the patient's body, so that after this movement it is as close as possible to the body region being examined.During this shift, the base unit typically remains stationary, resulting in relative movement between the side unit and the base unit. This shift generally reduces the distance to the center of the patient table along the x-axis. Advantageously, this eliminates the need for the patient to slide into the optimal position towards the side unit on the patient table; instead, the side unit is moved towards the patient.

[0034] Advantageously, the at least one side unit comprises at least one coil element. This allows it to receive magnetic resonance signals with a high signal-to-noise ratio (SNR). Preferably, the at least one side unit is flexible. In particular, the at least one side unit can comprise foamed material. The at least one side unit can have a hemispherical shape, allowing for good geometric adaptation to the patient's body.

[0035] Preferably, at least one side unit has a receiving unit for receiving the upper coil unit. Thus, it is possible that by moving at least one side unit, the upper coil unit is also moved simultaneously.

[0036] At least one side unit can be moved by means of a linear guide. The linear guide can, in particular, comprise a rail system and / or a telescopic extension and / or a carriage. This enables reliable movement.

[0037] Another embodiment provides that the upper coil unit is displaceable in at least one direction relative to the base unit. Furthermore, the upper coil unit preferably comprises at least one coil element. By displacing the upper coil unit, any coil elements of the upper coil unit can thus be positioned close to the patient's body.

[0038] In particular, the upper coil unit can be designed to be displaceable parallel to an x-axis and / or at least partially parallel to a y-axis relative to the base unit.

[0039] Regarding a description of the x-axis, please refer to the preceding explanations. The y-axis can be understood as an axis perpendicular to the x-axis. In particular, it can be understood as an axis that, when the base unit is positioned on the patient table, is perpendicular to the surface of the patient table. By shifting the upper coil unit, at least partially, parallel to the y-axis, its length can be adjusted. This allows any coil elements encompassed by the upper coil unit to be adjusted vertically; that is, the distance between any coil elements encompassed by the upper coil unit and the surface of the patient table can be changed. Thus, the patient can initially be positioned on the patient table while the upper coil unit is, at least partially, in an elevated position that does not interfere with the patient's positioning.Advantageously, part of the upper coil unit is only moved towards the patient's body afterwards.

[0040] The upper coil unit can be designed to be displaceable, at least in part, by means of a linear guide, in particular a rail system and / or a telescopic extension and / or a carriage. A telescopic extension can be used particularly advantageously for displacement parallel to the y-axis.

[0041] Preferably, the upper coil unit is removable, particularly from the base unit and / or the side unit. This allows for pain-free and easy patient positioning, enabling the upper coil section to be inserted into the base unit and / or side unit only after the patient has been positioned. Furthermore, removing the upper coil unit facilitates cleaning of the shoulder coil.

[0042] To make the upper coil unit removable, the base unit and / or the side unit has at least one receiving unit for the upper coil unit. In particular, the base unit and / or the side unit preferably has two receiving units arranged parallel to each other and offset from one another along the x-axis. This allows the upper coil unit to be positioned on either the patient's left and / or right shoulder. Advantageously, the upper coil unit is therefore designed to be usable on either side.

[0043] One embodiment provides that the upper coil unit comprises a support unit, in particular a rigid one, and a flexible enclosure unit. The enclosure unit is preferably geometrically flexible, i.e., its shape is adaptable. The enclosure unit is preferably designed to enclose the patient's shoulder, particularly from above and / or laterally.

[0044] For use on both sides, the enclosure unit is arranged centrally on the carrier unit and / or is designed to be mirror-symmetrical with respect to a mirror plane. For example, the enclosure unit has two areas that are mirror-symmetrical with respect to the mirror plane. Advantageously, the mirror plane comprises a straight line that, in a positioned state of the upper coil unit on the base unit and / or on the side unit, runs essentially parallel to the y-axis. Preferably, the carrier unit has a counterpart to the possible receiving unit of the base unit and / or side unit.

[0045] Preferably, the enclosing unit comprises foamed material, allowing it to conform well to the patient's shoulder. In particular, the enclosing unit includes several, i.e., two or more, hinged wings. The hinged wings can be designed as foam flaps and / or have a cloverleaf shape. This design allows the enclosing unit to conform particularly well to the patient's shoulder. Preferably, the wings are hinged to enclose the patient's shoulder.

[0046] One embodiment provides that the shoulder coil has at least one adjustment element, in particular at least one fluid cushion and / or at least one slider and / or at least one wedge and / or a self-locking hinge and / or a ratcheted pivot axis and / or a reversibly plastically deformable material designed to mold the shoulder coil to the patient.

[0047] In particular, the shoulder coil comprises at least one forming element, which preferably includes at least one coil element. The at least one forming element can, for example, be encompassed by the shoulder support unit and / or the side unit and / or the enclosure unit.

[0048] Advantageously, at least one adjusting element is designed to apply pressure to at least one forming element, so that at least one forming element, and thus also any coil elements that may be encompassed by at least one forming element, can be shaped to the contour of the patient.

[0049] Advantageously, the forming element is flexible and includes, in particular, elastic material, so that it can yield to the pressure generated by the adjusting element and thus change its shape.

[0050] The shoulder coil preferably comprises at least one rigid counter element, for example a rigid shell, on which the at least one adjusting element is arranged and is designed to absorb a counter pressure generated by the pressure applied to the at least one forming element, i.e. the at least one counter element serves as a counter bearing.

[0051] The at least one counter element can, for example, be encompassed by the base unit and / or the optional support unit of the upper coil unit. Preferably, the at least one adjusting element is arranged at least partially between the at least one forming element and the at least one counter element, for example, between the base unit and the optional shoulder support unit and / or between the base unit and the optional side unit and / or between the optional support unit and the optional enclosure unit.

[0052] In particular, the at least one adjusting element can comprise at least one fluid cushion, which is arranged at least partially between the at least one counter element and the at least one forming element. By filling and / or emptying the fluid cushion, its volume can be changed, thus also changing the pressure on the forming element in order to adapt its shape.

[0053] A fluid cushion can therefore be understood, in particular, as a cushion that can be filled with a fluid. The fluid can be a gaseous and / or a liquid substance. Air is particularly advantageous as the fluid, so that a particularly cost-effective and readily available fluid can be provided for filling at least one fluid cushion. Furthermore, a fluid cushion is understood to be, in particular, a container that is sealable from the outside and variable in shape, in which a fluid can be enclosed.

[0054] Furthermore, the at least one adjusting element can comprise at least one slider that is arranged on and / or in the counter element and is designed to press the at least one forming element towards the patient. For example, the at least one slider can be mounted in a rigid shell, extending from an outer side of the shell to the inner side. Adjustment by the at least one slider can be stepless or incremental.

[0055] Furthermore, the adjusting element can include at least one wedge that can be slid laterally between the at least one counter element and the at least one forming element. The at least one adjusting element can also include at least one sliding bearing and / or at least one rail on which the at least one wedge is mounted. Here, too, the adjustment can be stepless or incremental.

[0056] Furthermore, it is conceivable that the molding element comprises a composite of rigid and flexible components and / or has a split structure, for example, a split hard plastic shell, particularly in the shape of a cloverleaf. This split structure can be designed to conform to the patient's shape, in particular by at least partial rotation and / or deformation of the split structure. To effect this at least partial rotation and / or deformation of the split structure, the molding element can include at least a self-locking hinge and / or a ratcheted axis of rotation and / or a reversibly plastically deformable material.

[0057] Furthermore, a magnetic resonance imaging (MRI) device with a patient table and a shoulder coil is proposed. As already explained, the shoulder coil comprises an upper coil unit and a base unit. The base unit is positioned on the patient table.

[0058] The advantages of the magnetic resonance device according to the invention essentially correspond to the advantages of the shoulder coil according to the invention for examining a patient using a magnetic resonance device comprising a patient table, which have been described in detail below. Features, advantages, or alternative embodiments mentioned therein can likewise be transferred to the claimed magnetic resonance device and vice versa.

[0059] One embodiment of the magnetic resonance device provides that the magnetic resonance device includes a spinal coil, wherein the patient table has a longitudinal axis, and the shoulder coil has an overlap area with the spinal coil in the direction of the longitudinal axis of the patient table. The longitudinal axis is usually perpendicular to the x-axis and y-axis as previously described.

[0060] In particular, the magnetic resonance device has at least a part of the spinal coil and a part of the shoulder coil, preferably a part of the base unit, in particular a part of a shoulder support unit, in the overlap area perpendicular to a lying plane of the patient table.

[0061] This allows any coil elements of the spinal coil and the shoulder coil to be arranged seamlessly next to each other, ensuring continuous measurement coverage.

[0062] Preferably, the spinal coil and / or the shoulder coil in this overlap area includes at least one coil element. This allows for particularly good measurement coverage.

[0063] Furthermore, it is proposed that the shoulder coil, in particular a shoulder support unit, have a tapered cross-section in the overlap area towards the spinal coil in the direction of the longitudinal axis of the patient table. The shoulder coil can therefore be wedge-shaped in cross-section in the overlap area. Ideally, the shoulder coil is shaped so that the patient's contact surface transitions seamlessly from the shoulder coil to the spinal coil. This allows for particularly comfortable patient positioning.

[0064] Further advantages, features, and details of the invention will become apparent from the exemplary embodiments described below and from the drawings. Corresponding parts are designated with the same reference numerals in all figures.

[0065] They show:

[0066] Fig. 1 a schematic representation of a magnetic resonance device according to the invention,

[0067] Fig. 2 A representation of a spinal coil and a shoulder coil with an upper coil unit in a first position on a patient table,

[0068] Fig. 3 A representation of a spinal coil and shoulder coil with an upper coil unit in a second position on a patient table,

[0069] Fig. 4 A representation of a spinal coil and shoulder coil with an upper coil unit in a third position on a patient table,

[0070] Fig. 5 a representation of a shoulder coil,

[0071] Fig. 6 a representation of a shoulder coil with a shoulder support unit comprising two support elements,

[0072] Fig. 7 a schematic representation of a rotatable support element,

[0073] Fig. 8 a representation of an overlap area between a shoulder coil and a spinal coil,

[0074] Fig. 9 a representation of an upper coil unit,

[0075] Fig. 10 a schematic representation of an upper coil unit with three adjustment elements,

[0076] Fig. 11 a schematic representation of a shoulder support unit with two adjustment elements,

[0077] Fig. 12 a schematic representation of a page unit with a setting element.

[0078] In Fig. 1 is a magnetic resonance device 10 with a shoulder coil 100 and a spinal coil 200 The magnetic resonance device is shown schematically. 10 includes a magnetic unit 11 , which have a superconducting main magnet 12 to generate a strong and, in particular, time-constant main magnetic field13 It features. Furthermore, the magnetic resonance device includes 10 a patient admission area 14 to the admission of a patient 15 The patient admission area 14 In the present embodiment, it is cylindrical in shape and extends in a circumferential direction from the magnet unit. 11 surrounded by a cylindrical shape. However, a different design for the patient admission area is generally possible. 14 Conceivable at any time. The patient 15 can be done using a patient positioning device 16 the magnetic resonance device 10 to the patient admission area 14 to be pushed. The patient positioning device 16 This is indicated within the patient admission area. 14 , especially a patient table designed to be movable parallel to a z-axis 17 on.

[0079] The magnetic unit 11It also features a gradient coil unit 18 to the generation of magnetic field gradients, which are used for spatial encoding during imaging. The gradient coil unit 18 is achieved using a gradient control unit 19 the magnetic resonance device 10 controlled. The magnetic unit 11 It also includes a high-frequency antenna unit. 20 , which in the present embodiment are fixed in the magnetic resonance device 10 The integrated body coil is designed. The high-frequency antenna unit 20 This leads to the excitation of atomic nuclei, which are located in the area controlled by the main magnet. 12 generated main magnetic field 13 is set up, designed. The high-frequency antenna unit 20 is controlled by a high-frequency antenna control unit 21 the magnetic resonance device 10It controls and emits high-frequency magnetic resonance sequences into an examination room, which essentially consists of a patient admission area. 14 the magnetic resonance device 10 is formed. The high-frequency antenna unit 20 It is also designed to receive magnetic resonance signals. In addition, the high-frequency antenna control unit controls... 21 the shoulder coil 100 and the spinal coil 200 , which are primarily designed for receiving magnetic resonance signals. However, it is also conceivable that they could be used for transmitting high-frequency signals.

[0080] To control the main magnet 12 , the gradient control unit 19 and for controlling the high-frequency antenna control unit 21 The magnetic resonance device 10 a system control unit 22 on. The system control unit 22centrally controls the magnetic resonance device 10 , such as performing a predetermined imaging gradient echo sequence. The system control unit also includes 22 An evaluation unit (not shown in detail) for analyzing medical image data acquired during magnetic resonance imaging (MRI). Furthermore, the MRI device includes 10 a user interface 23 , which is connected to the system control unit 22 is connected. Control information such as imaging parameters, as well as reconstructed magnetic resonance images, can be displayed on a display unit. 24 , for example on at least one monitor, the user interface 23 The user interface is displayed for medical personnel. Furthermore, it indicates that... 23 an input unit 25a device through which information and / or parameters can be entered by the medical operating personnel during a measurement process.

[0081] The magnetic resonance device shown 10 The present embodiment may of course include further components that magnetic resonance devices usually have. A general operating principle of a magnetic resonance device 10 Furthermore, it is known to experts, so a detailed description of the general components is omitted.

[0082] Fig. 2 shows a shoulder coil 100 , which together with a spinal coil 200 on a patient table 17 is positioned. The shoulder coil 100 includes an upper coil unit 110 and a basic unit 120 .

[0083] Furthermore, the shoulder coil includes 100 several coil elements 101for sending and receiving high-frequency electromagnetic signals, exemplified in Fig. 5 are shown. In addition, the shoulder coil 100 an exception 121 on, with the help of which the shoulder coil 100 can be grasped.

[0084] Furthermore, the basic unit includes 120 a multi-pole electrical interface, via which the shoulder coil 100 It is electrically contactable. The electrical interface is dimensionally stable on the patient table. 17 underside of the base unit facing 120 It is arranged in a way that is why it is hidden in this illustration. The patient table 17 includes a counterpart interface, also not shown, into which the shoulder coil 100 when positioning on the patient table 17 advantageously slides in.

[0085] In this example, the shoulder coil 100furthermore, a shoulder support unit 130 on, which is based on the base unit 120 is arranged. The shoulder support unit 130 It is preferably designed to be flexible, so that it can geometrically adapt to the contour of the patient's shoulder. A flexible design is possible, for example, through the use of foamed material.

[0086] In addition, the shoulder coil includes 100 an optional headrest unit 170 , which provides comfortable positioning of the patient's head 15 made possible.

[0087] The patient table 17 It has a longitudinal axis L parallel to its greatest extent, which is aligned parallel to the z-axis. The shoulder coil 100 in the direction of the longitudinal axis L, an overlap area A to the spinal coil 200 on, which in detail in Fig. Figure 8 is shown. Advantageously, the overlap area A in the shoulder coil 100 and / or in the spinal coil 200 Coil elements, not shown in detail here, are arranged to ensure continuous coverage of the patient. 15 is given with coil elements.

[0088] In addition, the shoulder coil 100 in the overlap area A in the direction of the longitudinal axis L of the patient table 17 to the spinal coil 200 a tapered cross-section K. This allows for comfortable patient positioning. 15 possible.

[0089] The upper coil unit 110 is in Fig. 2 on the right side of the base unit 120 arranged. Preferably the upper coil unit. 110 removable, so that it can be separated from the base unit 120 can be solved and, in this example, rearranged on the left side, as in Fig. Figure 3 shows that... Therefore, only one upper coil unit is needed. 110 either of the patient's shoulders 15 be examined.

[0090] In Fig. 9 is one possible embodiment of an upper coil unit 110 depicted. It comprises a carrier unit. 111 , which is preferably rigidly designed, as well as a flexible enclosure unit 112 , which includes, for example, foamed material.

[0091] In order to conform well to a patient's shoulder, the enclosing unit has several wings. 113 on, as they are in Fig. 6 are shown as examples. Preferably, the multiple wings 113 designed to be foldable, so that it can be attached to the patient's shoulder 15 They can be folded down. This allows the enclosure unit to be adjusted to the patient. 15 can be geometrically adapted.

[0092] Furthermore, the enclosure unit shown here 112 centered on the carrier unit 111 The coil unit is arranged and mirror-symmetrical with respect to a mirror plane E. Due to this symmetry, the upper coil unit can be 110 easily on both sides of the shoulder coil 100 be used.

[0093] Furthermore, in Fig. 9 an optional linear guide 160 , in particular a telescopic extension is shown, whereby the upper coil unit 110 at least partially parallel to the y-axis relative to the base unit 120 It is movable. The movable area includes, in particular, the enclosure unit. 112 , which, for example, occurs when positioning the patient 15 on the patient table 17 is located in an elevated position, as exemplified by in Fig. Figure 3 is shown. After positioning the patient 15can an area of ​​the upper coil unit 110 , which includes the enclosure unit 112 encompasses areas parallel to the y-axis relative to the base unit 120 to the patient 15 be pushed forward.

[0094] In Fig. 5 are also two further linear guides 160 shown, with the help of which the upper coil unit 110 It is movable parallel to the x-axis. The linear guides 160 These may include, in particular, a rail system and / or a sled. This also improves patient comfort, especially for patients. 15 , who cannot move or can only move with pain, because the patient 15 during positioning on the patient table 17 not actively engaging with the upper coil unit 110 move it, especially slide it, but the upper coil unit 110 after the patient has been positioned15 It can be moved parallel to the x-axis towards the patient.

[0095] As in Fig. 2 shown, the shoulder coil 100 in addition, at least one, in this case two, page units 150 comprise elements that are movable parallel to the x-axis relative to the base unit. This displacement can, in turn, be achieved using a linear guide. 160 be carried out. The steps already mentioned in connection with the upper coil unit 110 The advantages of a shift in the x-direction explained above also apply analogously to at least one side unit.

[0096] The side unit can also have a receiving unit (not shown in detail here) for receiving the upper coil unit, so that the upper coil unit and the side unit can be moved simultaneously parallel to the x-axis.

[0097] Fig. Figure 6 shows a two-part version of the shoulder support unit. 130with a first support element 131 and a second support element 132 The first support element comprises 131 several coil elements 101 , while the second support element does not include a coil element. Compared to the one in Fig. In the embodiment shown in 6, coil elements can therefore be used. 101 Savings can be achieved, depending on the area of ​​the patient being measured. 15 can the first support element 131 It can be placed on one side or the other of the shoulder coil. The first support element is therefore intended to be placed there. 131 to arrange at a first, for example left, or at a second, for example right, position, with the first position being shifted parallel to the x-axis relative to the second position.

[0098] Advantageously, the first support element 131 and the second support element 132They also have the same shape. Furthermore, the counterparts on the base unit, on which the support elements are mounted, also have the same shape. 131 , 132 They can be positioned in the same shape. Thus, the support elements are 131 , 132 mechanically replaceable, i.e., the first support element 131 and the second support element 132 They can each be arranged in either the first or second position.

[0099] In Fig. 7 is a further embodiment of a shoulder support unit consisting of at least two parts. 130 sketched. Here is the first support element. 131 around an axis of rotation 133 rotatable, wherein the axis of rotation 133 in a positioned state of the base unit 120 on the patient table 17 parallel to a longitudinal axis L of the patient table 17 is aligned. This represents an easy-to-use variant, as it forms the first support element. 131It simply needs to be folded over to switch the side on which high-frequency signals, especially magnetic resonance signals, are to be sent and / or received. The shoulder coil features a [missing information - likely a specific feature or component] for signal transmission. 100 a flexible line 134 on, which is the first support element 131 with the base unit 120 electrically connects. The flexible cable 134 It can, for example, be integrated into a film hinge. Alternatively or additionally, the shoulder reel can be used. 100 an intermediate connection 135 include, which is trained, the first support element 131 with the base unit 120 to connect electrically.

[0100] The Fig. 10 to Fig. Figure 12 shows different variations of shaping the shoulder coil. 100 to the patient 15 , especially the patient's shoulder area 15 , by using at least one setting element140 , 145 The settings 140 They can be designed, for example, as fluid cushions and / or sliders and / or wedges that are positioned between a molding element. 141 and a counterpart 142 are arranged. Alternatively or in addition to the setting elements 140 Additional settings can be found 145 , such as a self-locking hinge and / or a ratcheted rotary axis and / or a reversibly plastically deformable material, which are used by the forming element 141 This includes these additional setting elements. 145 required for the shaping of the forming element 141 no counterpart 142 Since the molding elements usually have at least one coil element, the coil elements can be positioned very close to the patient using the molding process. 15 be positioned.

[0101] In Fig. Figure 10 shows an upper coil unit 110 , which three setting elements 140 includes those located between the carrier unit 111 and the enclosure unit 112 as a shaping element 141 are arranged. The setting elements 140 press the flexible enclosure unit 112 into a shape adapted to the contour of the patient, whereby the carrier unit 111 has a rigid shell that serves as a counter-element 142 functions. Fig. 11 two setting elements 140 on the flexible shoulder support unit 130 as a shaping element 141 and the rigid base unit 120 as a counter element 142 arranged to fit the shoulder support unit 130 to the patient 15 to be able to shape it. In Fig. 12 is a setting element 140 on the side unit 150 as a shaping element and the base unit 120as a counter element 142 arranged to fit the side unit 150 to the patient 15 to be able to shape it.

[0102] Finally, it should be noted once again that the shoulder coil described above and the illustrated magnetic resonance device are merely exemplary embodiments which can be modified in various ways by those skilled in the art without departing from the scope of the invention. Furthermore, the use of the indefinite articles "a" or "an" does not preclude the possibility that the features in question may be present multiple times. Likewise, the term "unit" does not preclude the possibility that the components in question consist of several interacting sub-components, which may also be spatially distributed.

[0103] In summary, the shoulder coil and magnetic resonance imaging system according to the invention enable comfortable positioning, especially for immobile patients. Previously, active movement, particularly sliding, and / or repositioning of the patient on the treatment table were necessary for correct relative positioning of the patient to conventional shoulder coils. The shoulder coil according to the invention allows the patient to be positioned unhindered on the treatment table and the shoulder coil to subsequently conform to the patient's shape without any assistance from the patient. Ideally, this conformation allows for geometric adjustment of at least one coil element of the shoulder coil in all three spatial directions.By possibly shifting the upper coil unit and / or any side units, the body part to be examined can be positioned as centrally as possible in the patient reception area, where maximum magnetic field homogeneity is usually found.

Claims

[1] Shoulder coil ( 100 ) with at least one coil element ( 101 ) to examine a patient ( 15 ) by means of a patient table ( 17 ) comprehensive magnetic resonance device ( 10 ), where the shoulder coil ( 100 ) an upper coil unit ( 110 ) and a base unit ( 120 ) includes, where the base unit ( 110 ) is trained, on the patient table ( 17 ) to be positioned. [2] Shoulder coil ( 100 ) according to claim 1, where the base unit ( 120 ) has a multi-pole electrical interface through which the shoulder coil ( 100 ) is electrically contactable, where the electrical interface is dimensionally stable on the base unit ( 120 ) is arranged. [3] Shoulder coil ( 100 ) according to one of claims 1 or 2, wherein the shoulder coil ( 100) a flexible shoulder support unit ( 130 ) includes those based on the base unit ( 120 ) is arranged. [4] Shoulder coil ( 100 ) according to claim 3, wherein the shoulder support unit ( 130 ) includes foamed material. [5] Shoulder coil ( 100 ) according to one of claims 3 or 4, the shoulder support unit ( 130 ) a first support element ( 131 ) and a second support element ( 132 ) includes, where the first support element ( 131 ) at least one coil element ( 101 ) includes and the second support element ( 132 ) does not include a coil element. [6] Shoulder coil ( 100 ) according to claim 5, wherein the first support element ( 131 ) and the second support element ( 132 ) have the same shape. [7] Shoulder coil ( 100 ) according to one of claims 5 or 6, wherein the first support element ( 131) around an axis of rotation ( 133 ) is rotatable, wherein the axis of rotation ( 133 ) in a positioned state of the base unit ( 120 ) on the patient table ( 17 ) parallel to a longitudinal axis (L) of the patient table ( 17 ) is aligned. [8] Shoulder coil ( 100 ) according to one of claims 5 to 7, wherein the shoulder coil ( 100 ) a flexible line ( 134 ) includes the first support element ( 131 ) with the base unit ( 120 ) electrically connects. [9] Shoulder coil ( 100 ) according to one of claims 5 to 8, wherein the shoulder coil ( 100 ) an intermediate connection ( 135 ) includes, which is formed, the first support element ( 131 ) with the base unit ( 120 ) to connect electrically. [10] Shoulder coil ( 100 ) according to one of the preceding claims, wherein the shoulder coil ( 100 ) at least one page unit (150 ) includes lines parallel to an x-axis (x) relative to the base unit ( 120 ) is movable. [11] Shoulder coil ( 100 ) according to claim 10, wherein the at least one side unit ( 150 ) a receiving unit for receiving the upper coil unit ( 110 ) exhibits. [12] Shoulder coil ( 100 ) according to one of the preceding claims, wherein the upper coil unit ( 110 ) in at least one direction relative to the base unit ( 120 ) is movable. [13] Shoulder coil ( 100 ) according to one of the preceding claims, wherein the upper coil unit ( 110 ) parallel to an x-axis (x) and / or at least partially parallel to a y-axis (y) relative to the base unit ( 120 ) is movable. [14] Shoulder coil ( 100 ) according to one of the preceding claims, wherein the upper coil unit ( 110 ) is removable. [15] Shoulder coil ( 100 ) according to one of the preceding claims, wherein the upper coil unit ( 110 ) a carrier unit ( 111 ) and a flexible enclosure unit ( 112 ) includes. [16] Shoulder coil ( 100 ) according to claim 15, wherein the enclosure unit ( 112 ) centered on the carrier unit ( 111 ) is arranged and / or is mirror-symmetrical with respect to a mirror plane (E). [17] Shoulder coil ( 100 ) according to one of claims 15 or 16, wherein the enclosure unit ( 112 ) includes foamed material. [18] Shoulder coil ( 100 ) according to one of claims 15 to 17, wherein the enclosure unit ( 112 ) several folding wings ( 113 ) includes. [19] Shoulder coil ( 100 ) according to one of the preceding claims, wherein the shoulder coil ( 100 ) at least one setting element ( 140) includes the trained shoulder coil ( 100 ) to the patient ( 15 to shape. [20] Magnetic resonance device ( 10 ) with a patient table ( 17 ) and a shoulder coil ( 100 ), where the shoulder coil ( 100 ) an upper coil unit ( 110 ) and a base unit ( 120 ) includes, where the base unit ( 120 ) on the patient table ( 17 ) is positioned. [21] Magnetic resonance device ( 10 ) according to claim 20, wherein the shoulder coil ( 100 ) is designed according to one of claims 2 to 19. [22] Magnetic resonance device ( 10 ) according to one of claims 20 or 21, the magnetic resonance device ( 10 ) a spinal coil ( 200 ) includes, where the patient table ( 17 ) has a longitudinal axis (L), where the shoulder coil (100 ) in the direction of the longitudinal axis (L) of the patient table ( 17 ) an overlap area (A) to the spinal coil ( 200 ) exhibits. [23] Magnetic resonance device according to claim 22, wherein the shoulder coil ( 100 ) in the overlap area (A) in the direction of the longitudinal axis (L) of the patient table ( 17 ) to the spinal coil ( 200 ) has a tapered cross-section (K).

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