SPECT-CT probe and system

Abstract

The utility model provides an SPECT-CT probe and a system. The SPECT-CT probe comprises a probe body and at least one capacitive sensor, the probe body is provided with a contact surface which is used for being in contact with a to-be-detected part of a patient; and at least one capacitive sensor is arranged on the contact surface. The SPECT-CT probe disclosed by the utility model is provided with the capacitive sensor, and the fitting condition of the probe and the body profile of a patient can be accurately monitored through the capacitive sensor, so that the probe is effectively prevented from extruding the patient in a stretching process and is more fit with the body profile of the patient, and the state of the probe during each scanning can be more accurately controlled; and the scanning precision and consistency are improved, so that the clinical performance of the whole SPECT-CT system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear medicine imaging equipment, in particular to a SPECT-CT probe and a system. Background Art

[0002] SPECT-CT is an imaging diagnostic device that integrates single-photon emission computed tomography (SPECT) and CT. It perfectly combines functional metabolism with anatomical structure to display images. The SPECT-CT system introduces radioactive drugs into the human body. After metabolism, radioactive concentration differences are formed inside the organs and outside the SPECT or between the lesion and normal tissues. These differences are detected and re-imaged through computer processing. One examination provides accurate anatomical structure and function of the lesion, as well as information on metabolic changes. The fusion technology of SPECT and CT can give full play to the advantages of the two imaging examination technologies, while making up for their respective shortcomings, greatly increasing the amount of information obtained on the image, thereby improving the sensitivity, specificity and accuracy of disease diagnosis, and can make early diagnosis of diseases and judge the efficacy. It has been applied to the detection of various clinical diseases such as bones, heart and tumors.

[0003] An important movement in the SPECT-CT system is the movement of the probe. The probe of the SPECT-CT system moves up and down as the examination bed slowly withdraws, scanning from the patient's head to the feet to complete the whole body scan. In order to solve the need of multi-probe SPECT-CT to achieve the probe close to the patient without squeezing the patient, it is urgent to develop a SPECT-CT probe to improve the clinical performance of the SPECT-CT system.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the problems in the prior art, the purpose of the present invention is to provide a SPECT-CT probe and system. The system equipped with the SPECT-CT probe of the present invention can effectively improve the scanning accuracy, avoid medical accidents, and improve the performance of medical imaging equipment.

[0006] A first aspect of the utility model provides a SPECT-CT probe, comprising a probe body and at least one capacitive sensor;

[0007] The probe body is provided with a contact surface for contacting a desired detection part of a patient;

[0008] At least one of the capacitive sensors is disposed on the contact surface.

[0009] According to the first aspect of the utility model, the cross section of the contact surface is arc-shaped.

[0010] According to the first aspect of the utility model, at least one of the capacitive sensors is arranged on a plane at the top of the arc of the contact surface.

[0011] According to the first aspect of the utility model, the SPECT-CT probe comprises a plurality of the capacitive sensors, and the plurality of the capacitive sensors are evenly distributed along the axis of the contact surface.

[0012] According to the first aspect of the utility model, the SPECT-CT probe comprises a plurality of the capacitive sensors, and the plurality of the capacitive sensors are distributed in an array along the axis of the contact surface.

[0013] The second aspect of the utility model provides a SPECT-CT system, comprising at least one SPECT-CT probe, each of which is connected to a SPECT-CT body via a mobile unit.

[0014] According to a second aspect of the utility model, the SPECT-CT system further includes a data module, a judgment module and a control module;

[0015] The data module is used to obtain the capacitance value of at least one of the capacitive sensors in real time;

[0016] The control module is used to control the movement of the mobile unit and the position of the SPECT-CT probe according to the capacitance value of at least one of the capacitance sensors obtained by the data module.

[0017] According to a second aspect of the utility model, the system further comprises a user interface, which is connected to the data module and is used to display a capacitance value of at least one of the capacitive sensors acquired in real time by the data module.

[0018] The SPECT-CT probe of the utility model is provided with a capacitive sensor, through which the fit between the probe and the patient's body contour can be accurately monitored, effectively avoiding squeezing the patient during the extension and retraction of the probe while fitting the patient's body contour more closely, thereby more accurately controlling the state of the probe during each scan, improving the accuracy and consistency of the scan, and thus improving the clinical performance of the entire SPECT-CT system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0020] Figure 1 and Figure 2 They are respectively a three-dimensional structural schematic diagram and a cross-sectional view of a SPECT-CT system according to an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of a SPECT-CT probe according to an embodiment of the utility model; and

[0022] Figure 4 It is a structural schematic diagram of the contact surface of a SPECT-CT probe according to an embodiment of the utility model. DETAILED DESCRIPTION

[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the utility model will be comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and should not be construed as limitations on the utility model. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0024] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0027] In view of the existing technical problems, the utility model provides a SPECT-CT probe and system, wherein the SPECT-CT probe includes a probe body and at least one capacitive sensor; the probe body is provided with a contact surface for contacting the desired detection part of the patient; at least one capacitive sensor is provided on the contact surface. The SPECT-CT probe of the utility model is provided with a capacitive sensor, through which the fit between the probe and the patient's body contour can be accurately monitored, effectively avoiding squeezing the patient during the extension and retraction of the probe while fitting the patient's body contour more closely, thereby more accurately controlling the state of the probe during each scan, improving the accuracy and consistency of the scan, and thus improving the clinical performance of the entire SPECT-CT system.

[0028] The structures of the SPECT-CT probe and the SPECT-CT system of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments. It can be understood that the specific embodiments are not intended to limit the protection scope of the present invention.

[0029] Figure 1 and Figure 2 The three-dimensional structure schematic diagram and cross-sectional view of a SPECT-CT system according to an embodiment of the present invention are shown respectively. The SPECT-CT system comprises at least one SPECT-CT probe 1, each of which is connected to a SPECT-CT body 8 via a mobile unit (not shown in the figure). Figure 1 The SPECT-CT body 8 of the embodiment is annular, and the examination bed 9 can move in the through hole in the middle of the SPECT-CT body 8. Generally, the SPECT-CT probe 1 usually has two dimensions of freedom, such as Figure 2As shown, it can move in the x-direction and the y-direction, or multiple SPECT-CT probes 1 are evenly distributed along the circumference of the through hole of the PECT-CT body 8, and the SPECT-CT probe 1 can move along the radial direction of the through hole. That is, each probe of the SPECT-CT system adjusts its positional relationship with the patient on the examination bed 9 as the examination bed 9 moves, thereby obtaining multiple SPECT-CT images of the patient.

[0030] Figure 3 The structure diagram of the SPECT-CT probe of an embodiment of the utility model is shown in FIG. 1 . Specifically, the SPECT-CT probe includes a probe body 11 and at least one capacitive sensor 2; the two ends of the mobile unit 3 are respectively connected to the SPECT-CT body and the probe body 11, and the mobile unit 3 can be a combination of a mechanical arm and a motor, etc., which can be designed and determined according to the travel required for the SPECT-CT probe to move. The probe body 11 is provided with a contact surface 12 for contacting the desired detection part of the patient; at least one of the capacitive sensors 2 is provided on the contact surface 12. When at least one of the capacitive sensors on the contact surface contacts the desired detection part (skin) of the patient, the capacitance value of the capacitive sensor changes. That is, the capacitance value of the capacitive sensor in the air is small, and the capacitance value becomes larger when it contacts the desired detection part (skin) of the patient. Of course, in actual use, the SPECT-CT probe may also be provided with a shell to protect the capacitive sensor, but the setting of the shell does not affect the principle of the use of the probe, and the influence of the shell will be reflected in the set threshold.

[0031] The cross section of the contact surface 12 of the SPECT-CT probe 1 may be arc-shaped, which is easier for the patient to contact. Since the arc-shaped top of the contact surface usually contacts the patient first, in some embodiments, at least one of the capacitive sensors is disposed on a plane of the arc-shaped top of the contact surface.

[0032] Since the length of the SPECT-CT probe in the moving direction of the examination bed is about 35 cm, each SPECT-CT probe can be provided with multiple capacitive sensors to prevent the part of the SPECT-CT probe not provided with the capacitive sensor from contacting the patient, thereby affecting the judgment of the system. Figure 4 This is a schematic structural diagram of a SPECT-CT probe according to another embodiment of the present invention, wherein the contact surface 12a of the SPECT-CT probe is provided with three capacitive sensors 2a, the three capacitive sensors 2a are all provided on a plane at the top of the arc of the contact surface 12a, and the plurality of the capacitive sensors 2a are evenly distributed along the axis OO' of the contact surface 12a.

[0033] In some other embodiments, the SPECT-CT probe includes a plurality of the capacitive sensors, and the plurality of the capacitive sensors are distributed in an array along the axis of the contact surface. The number and position of the capacitive sensors provided in each SPECT-CT probe in the SPECT-CT system can be set according to the position of the probe in the SPECT-CT system and its own structure, which is not limited here.

[0034] The utility model also provides a SPECT-CT system, the SPECT-CT system includes at least one SPECT-CT probe, each of which is connected to the SPECT-CT body through a mobile unit. The probe of the SPECT-CT system of the utility model can effectively improve the scanning accuracy, avoid medical accidents, and improve the performance of medical imaging equipment.

[0035] In some embodiments, the SPECT-CT system further includes a data module and a control module; the data module is used to obtain the capacitance value of at least one of the capacitance sensors in real time; the control module is used to control the movement of the mobile unit and the position of the SPECT-CT probe according to the capacitance value of at least one of the capacitance sensors obtained by the data module. In order to further illustrate the structure of the probe of the utility model, a method for using the SPECT-CT system equipped with the probe is briefly described. The method for using is applied to the process in which any SPECT-CT probe of the above-mentioned SPECT-CT system approaches the patient at a first speed. The method for using includes the following steps:

[0036] The data module acquires the capacitance value of each capacitance sensor of the SPECT-CT probe in real time; the system operator determines whether the capacitance value of the capacitance sensor of the SPECT-CT probe is greater than the air reference capacitance value of the capacitance sensor and whether the ratio of the capacitance value of each capacitance sensor to the air reference capacitance value of the capacitance sensor is greater than a set threshold value; the set threshold value here can be an empirical value, or obtained based on the mapping relationship between the capacitance value of the capacitance sensor and the distance between the probe and the contacted object. The set threshold value can be selected based on experience when the capacitance sensor is in contact with the patient and has a certain pressure but does not make the patient feel squeezed. The air reference capacitance value of each capacitance sensor may change slightly due to changes in the actual use environment (temperature and humidity, etc.). In theory, the air reference capacitance value is calibrated during use, and the data module of the system can collect the capacitance value of the SPECT-CT probe when it is not in contact with the patient and set it as the air reference capacitance value of the capacitance sensor. In the above steps, each capacitance sensor of the SPECT-CT probe is biased. If the capacitance value of any of the capacitance sensors of the SPECT-CT probe is greater than the air reference capacitance value of the capacitance sensor and the difference between the capacitance value of the capacitance sensor and the quasi-capacitance value of the air-based capacitance sensor of the capacitance sensor is greater than a set threshold, the control module controls the moving unit to stop moving and the SPECT-CT probe remains stationary. The SPECT-CT probe and system of the utility model can be brought as close to the patient's body as possible without squeezing the patient.

[0037] Furthermore, in order to facilitate the system operator to read the data module and obtain the capacitance value of each capacitance sensor of the SPECT-CT probe in real time, in some embodiments, the system may also include a user interface, which is connected to the data module and is used to display the capacitance value of at least one capacitance sensor obtained by the data module in real time. When the capacitance values ​​of the multiple capacitance sensors set by the SPECT-CT probe do not meet the conditions, that is, the capacitance values ​​of the multiple capacitance sensors of a certain SPECT-CT probe are not greater than its air reference capacitance value, or even if the capacitance value of a certain capacitance sensor is greater than its air reference capacitance value but the ratio of the capacitance value to the air reference capacitance value is less than or equal to the set threshold, the SPECT-CT system believes that the probe is not in contact with the patient. At this time, the control module can control the mobile unit to continue to move, and the SPECT-CT probe continues to approach the patient.

[0038] It should be pointed out that in the technical solution of the SPECT-CT system of the utility model, each functional module and module unit included therein can correspond to a specific hardware circuit in the integrated circuit structure, and therefore only involves the improvement of the specific hardware circuit, and the hardware part is not merely a carrier for executing control software or computer programs, and therefore solving the corresponding technical problems and obtaining the corresponding technical effects do not involve the application of any control software or computer programs. In other words, the utility model can solve the technical problems to be solved and obtain the corresponding technical effects by only utilizing the improvements in the hardware circuit structure involved in these modules and units, and does not need to be assisted by specific control software or computer programs to realize the corresponding functions.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0040] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A SPECT-CT probe, characterized in that: It includes a probe body and at least one capacitive sensor; The probe body is provided with a contact surface for contacting a desired detection part of a patient; At least one of the capacitive sensors is disposed on the contact surface.

2. The SPECT-CT probe according to claim 1, characterized in that: The cross section of the contact surface is arc-shaped.

3. The SPECT-CT probe according to claim 2, characterized in that: At least one of the capacitive sensors is disposed on a plane at the top of the arc of the contact surface.

4. The SPECT-CT probe according to claim 1, characterized in that: The SPECT-CT probe includes a plurality of the capacitive sensors, and the plurality of the capacitive sensors are evenly distributed along the axis of the contact surface.

5. The SPECT-CT probe according to claim 1, characterized in that: The SPECT-CT probe includes a plurality of the capacitive sensors, and the plurality of the capacitive sensors are distributed in an array along the axis of the contact surface.

6. A SPECT-CT system, characterized in that: The method comprises at least one SPECT-CT probe according to any one of claims 1 to 5, wherein each of the SPECT-CT probes is connected to a SPECT-CT body via a moving unit.

7. The SPECT-CT system according to claim 6, characterized in that: Also includes a data module and a control module; The data module is used to obtain the capacitance value of at least one of the capacitive sensors in real time; The control module is used to control the movement of the mobile unit and the position of the SPECT-CT probe according to the capacitance value of at least one of the capacitance sensors obtained by the data module.

8. The SPECT-CT system according to claim 7, characterized in that: The system further comprises a user interface, which is connected to the data module and is used to display the capacitance value of at least one of the capacitance sensors acquired in real time by the data module.

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