Magnetic resonance compatible oxygen saturation detection system and detection method

Abstract

The invention belongs to the technical field of magnetic resonance equipment, and particularly relates to a magnetic resonance compatible oxygen saturation detection system which comprises a blood oxygen monitor, a transmission assembly and a blood oxygen probe, the transmission assembly shields a magnetic field in magnetic resonance equipment, and the blood oxygen probe is made of nonmetal; one end of the transmission assembly is connected with the blood oxygen monitor, and the other end of the transmission assembly extends into the cylindrical shell of the magnetic resonance equipment, is connected with the blood oxygen probe and transmits a signal of the blood oxygen probe to the blood oxygen monitor; a mounting plate is arranged on the bed body, a through hole is formed in the mounting plate, and the transmission assembly adopts a wire wrapped by a magnetic shielding net and is arranged in the through hole in a penetrating manner; the invention aims to provide a transmission assembly capable of shielding a magnetic field and a non-metal blood oxygen probe, so that blood oxygen monitoring can be carried out during magnetic resonance, detection of magnetic resonance is not affected, the imaging quality is good, and the device is practical and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic resonance equipment, and in particular to a magnetic resonance compatible oxygen saturation detection system and detection method. Background Art

[0002] Magnetic resonance imaging is a radiation-free imaging technology used in medical diagnosis. It generates detailed images of the internal structure of the human body through strong magnetic fields and radio frequency pulses. Current magnetic resonance imaging equipment includes a cylindrical outer shell and a slidable bed. The cylindrical shell is equipped with a main magnet system. The person being tested lies on the bed and slides the part to be tested into the outer shell. The main magnet system provides a stable spatial magnetic field environment, and the gradient system generates the gradient magnetic field required for imaging. The radio frequency system excites and receives signals, and finally a computer is used to process the signals to complete the examination.

[0003] During the examination, it is necessary to ensure that the examined part does not move as much as possible, and newborns need to be sedated. However, the time for an MRI examination is generally 20 to 60 minutes. For newborns and critically ill patients after sedation, there is a risk of suffocation. However, existing MRI equipment does not have an oxygen saturation detection function, and there is a possibility that the patient may suffocate and the treatment may not be timely. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a magnetic resonance compatible oxygen saturation detection system capable of monitoring the blood oxygen of a detected person during magnetic resonance detection.

[0005] The technical solution adopted by the present invention is as follows: A magnetic resonance compatible oxygen saturation detection system includes a blood oxygen monitor, a transmission component and a blood oxygen probe, wherein the transmission component shields the magnetic field in the magnetic resonance device, and the blood oxygen probe is non-metallic and has an adjustable opening size to clamp fingers or the soles of newborns' feet; The blood oxygen probe is arranged on a bed which can slide along the Y-axis direction, one end of the transmission component is connected to the blood oxygen monitor, the other end of the transmission component extends into the cylindrical shell of the magnetic resonance device and is connected to the blood oxygen probe, and transmits the signal of the blood oxygen probe to the blood oxygen monitor.

[0006] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a transmission component that can shield the magnetic field and a non-metallic blood oxygen probe, blood oxygen monitoring can be performed simultaneously during magnetic resonance imaging without affecting the detection of magnetic resonance imaging.

[0007] 2. Conventional blood oxygen probes are usually fixed on the fingers through finger clips. Since the fingers of newborns are shorter and smaller, it is not easy to clamp them firmly. Therefore, a blood oxygen probe with an adjustable opening size can be set to be suitable for the fingers or the soles of the feet of newborns.

[0008] As a preferred embodiment of the present invention, a mounting plate is provided on the bed, a through hole is opened on the mounting plate, and the transmission component uses a wire wrapped by a magnetic shielding net and passed through the through hole.

[0009] Beneficial effect: Since the blood oxygen sensor may move within a certain range during use and installation, the wire is limited by setting a through hole to prevent the wire from being unstable and easily entangled with other wires.

[0010] As a preferred embodiment of the present invention, the transmission assembly includes a first mounting frame fixed to the outside of the cylinder and a second mounting frame fixed to the bed, the first mounting frame is mounted with a first receiving wire and a first transmitting wire, the second mounting frame is mounted with a second receiving wire and a second transmitting wire, when the bed slides to the detection position, the first receiving wire is connected to the second receiving wire, and the first transmitting wire is connected to the second transmitting wire; The second transmitting wire and the second receiving wire are both connected to the blood oxygen probe.

[0011] Beneficial effects: In the existing clamping method, the patient lies on the bed, and after the medical staff clamps the blood oxygen probe, the bed and the patient are sent into the cylindrical shell. During the movement of the bed, the wires will be dragged to a certain extent, and frequent pulling and bending of the wires may cause damage to the insulation layer and magnetic shielding net on the outside of the wires, thereby reducing their service life. By setting the transmission component to be separate, the second receiving wire, the second transmitting wire and the blood oxygen probe can move with the bed, preventing the wires from being frequently pulled and bent. When the wires are optical fibers, over-bending during dragging can be avoided, which affects signal transmission.

[0012] As a preferred embodiment of the present invention, the blood oxygen probe includes a transmitting end, a receiving end and a supporting block that can rotate around the X-axis direction, the supporting block is installed on the bed, and the upper end surface of the supporting block is equipped with a fixed part and a sliding part that can slide along the X-axis direction, the receiving end is fixedly installed on the upper end surface of the supporting block and is located between the fixed part and the sliding part, and the transmitting end is vertically slidably installed between the fixed part and the sliding part and is located above the receiving end.

[0013] Beneficial effects: The inner wall of the fixed part, the inner wall of the sliding part, the upper transmitting end, and the lower receiving end form a rectangular opening. The sliding part can be slid along the X-axis direction to adjust the width of the opening, and the transmitting end can be vertically slid to adjust the height of the opening. The support block rotates around the X-axis direction to change the direction of the opening, so that the opening can be suitable for fingers or the soles of newborn babies.

[0014] As a preferred embodiment of the present invention, sliding holes are vertically provided on the fixed portion and the sliding portion, one end of the transmitting end is slidably installed in the sliding hole of the fixed portion and fixedly connected to the second transmitting wire, the other end of the transmitting end is fixedly connected to an elastic band, one end of the elastic band passes through the sliding hole of the sliding portion and is bonded to the side wall of the support block.

[0015] Beneficial effects: The moving direction of the transmitting end is limited by setting the sliding hole, and the height of the opening is adjusted. By setting the adhesive elastic band, the elastic band and the transmitting end can be tightened and pressed on the corresponding position.

[0016] As a preferred embodiment of the present invention, a dovetail groove is provided on the upper end surface of the support block, and two elastic strips are arranged at intervals on the upper end surface of the support block. The sliding part includes a dovetail block and a vertical plate. The dovetail block is slidably installed in the dovetail groove, and the lower end surface of the vertical plate is symmetrically provided with slots about the dovetail groove, and the two elastic strips pass through the corresponding slots respectively.

[0017] Beneficial effects: 1. By setting the dovetail groove, it is convenient to install the vertical plate and the dovetail block. By setting the notch and the elastic strip, the elasticity of the elastic strip itself makes the friction between the vertical plate and the elastic strip greater, making it difficult for the dovetail block to slide in the dovetail groove without external force, thereby ensuring the clamping effect.

[0018] 2. An elastic strip is provided. When the opening becomes larger, the lower part of the sole of the foot contacts the elastic strip, which improves comfort compared to direct contact with the support block.

[0019] As a preferred embodiment of the present invention, the support block and the fixing portion are respectively fixedly connected with a first limiting plate and a second limiting plate on one side close to the second transmitting wire, the first limiting plate is located below the second receiving wire, the second limiting plate is located below the second transmitting wire, and a plurality of limiting columns are arranged on the first limiting plate and the second limiting plate, and the plurality of limiting columns are all located on the inner sides of the bending portions of the second transmitting wire and the second receiving wire.

[0020] Beneficial effect: The combination of the first limiting plate, the second limiting plate and the limiting column limits the position of the wire, thereby preventing the wire from being bent repeatedly during long-term use, thereby reducing its service life.

[0021] As a preferred embodiment of the present invention, a plurality of slots are provided on the first mounting frame at intervals along the Y-axis direction, the first receiving wire and the first transmitting wire are both installed on the first connector, the first connector can be inserted into any slot, the second receiving wire and the second transmitting wire both extend in a direction away from the first connector and are both installed on the second connector, and after the bed slides to the specified position, the first connector is connected to the second connector, connecting the first receiving wire to the second receiving wire, and the first transmitting wire to the second transmitting wire.

[0022] Beneficial effect: According to the body proportions of the user (infant, adult) and the different parts to be detected (head, chest, legs, etc.), the bed body needs to adjust the length of the bed body extending into the cylinder. Therefore, according to the detection part, the position of the first connector is adjusted along the Y direction so that when the bed body slides to the specified position, the first connector is connected to the second connector.

[0023] As a preferred embodiment of the present invention, it also includes a soundproof blanket, which is used to wrap a baby.

[0024] Beneficial effects: After wrapping the baby, the soundproof blanket is fixed on the support block to fix the baby's position and prevent the baby from turning over and moving; by setting the soundproof blanket and wrapping the baby, the vibration transmission noise is reduced, reducing the possibility of waking the baby due to environmental changes.

[0025] A second object of the present invention is to provide a detection method, according to the above-mentioned magnetic resonance compatible oxygen saturation detection system, characterized in that it includes the following steps: S1: Adjust the opening size of the blood oxygen sensor according to the blood oxygen monitoring part of the person being tested; S2: The person being tested lies on the bed and clamps his fingers or soles of his feet through the blood oxygen probe; S3: Push the bed to the designated position, start the blood oxygen monitor, and start magnetic resonance imaging and blood oxygen monitoring.

[0026] Beneficial effect: During magnetic resonance imaging, the blood oxygen saturation detection system described above can be used to simultaneously monitor blood oxygen, detect blood oxygen abnormalities in a timely manner, and reduce the risk of suffocation for the person being tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of an embodiment of a blood oxygen saturation detection system of the present invention; Figure 2 yes Figure 1 A magnified view of the structure at A; Figure 3 yes Figure 1 A magnified view of the structure at B; Figure 42 is a schematic diagram of the structure of a blood oxygen sensor in an embodiment of a blood oxygen saturation detection system of the present invention; Figure 5 It is a structural schematic diagram of a sliding part in an embodiment of a blood oxygen saturation detection system of the present invention; Figure 6 It is a structural schematic diagram of the blood oxygen saturation detection system embodiment of the present invention after the bed slides to a specified position; Figure 7 yes Figure 6 A magnified view of the structure at C; Figure 8 It is a schematic diagram of the structure of the sound insulation package in the embodiment of the blood oxygen saturation detection system of the present invention.

[0028] The reference numerals include: cylindrical shell 1, bed body 2, limiting groove 21, transmission component 3, first mounting frame 31, slot 311, first connector 312, first receiving wire 313, first transmitting wire 314, second mounting frame 32, second connector 321, second receiving wire 322, second transmitting wire 323, blood oxygen probe 4, transmitting end 41, elastic band 411, receiving end 42, support block 43, dovetail groove 431, fixing part 44, sliding part 45, dovetail block 451, vertical plate 452, sliding hole 453, elastic strip 46, first limiting plate 47, second limiting plate 48, limiting column 49, sound insulation bag 5. DETAILED DESCRIPTION

[0029] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0030] In the description of the present application, the terms "first", "second", etc. are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] See also Figure 1 As shown, a magnetic resonance-compatible oxygen saturation detection system of this embodiment includes a transmission component 3, a blood oxygen probe 4, and a blood oxygen monitor. The blood oxygen monitor is connected to the blood oxygen probe 4 through the transmission component 3 while performing magnetic resonance detection.

[0032] Among them, see Figure 1 As shown, the magnetic resonance apparatus includes a cylindrical housing 1 and a slidable bed 2 .

[0033] Among them, see Figure 2 , Figure 3As shown, the transmission component 3 uses a wire wrapped in a magnetic shielding net, and the transmission component 3 includes a first mounting frame 31 fixed to the outside of the cylindrical shell 1 and a second mounting frame 32 fixed to the bed 2. The first mounting frame 31 is provided with a plurality of slots 311 spaced apart along the Y-axis direction, and a first connector 312 is clamped on the corresponding slot 311, and a first receiving wire 313 and a first transmitting wire 314 are installed on the first connector 312; a second connector 321 is installed on the second mounting frame 32, and a second receiving wire 322 and a second transmitting wire 323 are fixedly connected to the second connector 321. When the bed 2 slides to the detection position, the first connector 312 and the second connector 321 are docked, so that the first receiving wire 313 is connected to the second receiving wire 322, and the first transmitting wire 314 is connected to the second transmitting wire 323; according to different parts to be detected (head, chest, legs, etc.), the bed 2 needs to adjust the length of extending into the cylindrical shell 1. Therefore, according to the detection part, the position of the first connector 312 is adjusted along the Y direction, so that when the bed 2 slides to the specified position, the first connector 312 is connected to the second connector 321; by setting the transmission component 3 as a separate wire, it is avoided that the wire is frequently pulled and bent, which causes the insulation layer and magnetic shielding net on the outside of the wire to be damaged, thereby reducing the service life.

[0034] In other embodiments, the transmission component 3 can be transmitted via optical fiber. The first connector 312 and the second connector 321 are composed of two optical fiber connectors. The first connector 312 is provided with a socket, and the second connector 321 is provided with a plug. After the plug is inserted into the socket, the two optical fiber sections are connected, and optical signals can be transmitted.

[0035] Among them, see Figure 3 and Figure 4 As shown, the blood oxygen probe 4 includes a transmitting end 41, a receiving end 42 and a support block 43 that can rotate around the X-axis direction. The bed body 2 is provided with a limiting groove 21, and the support block 43 is installed in the limiting groove 21. The two side walls of the limiting groove 21 are inclined outward from bottom to top to limit the maximum rotation angle of the support block 43; the upper end surface of the support block 43 is installed with a fixing part 44 and a sliding part 45 that can slide along the X-axis direction, and the receiving end 42 is fixedly installed on the upper end surface of the support block 43 and is located between the fixing part 44 and the sliding part 45. The transmitting end 41 is vertically slidably installed between the fixed part 44 and the sliding part 45, and is located above the receiving end 42; the inner wall of the fixed part 44, the inner wall of the sliding part 45, the upper transmitting end 41, and the lower receiving end 42 form a rectangular opening, the sliding part 45 is slid along the X-axis direction, the width of the opening can be adjusted, the transmitting end 41 is vertically slidably installed between the fixed part 44 and the sliding part 45, and is located above the receiving end 42; the inner wall of the fixed part 44, the inner wall of the sliding part 45, the upper transmitting end 41, and the lower receiving end 42 form a rectangular opening, the sliding part 45 is slid along the X-axis direction, the height of the opening can be adjusted by sliding the sliding part 45 along the X-axis direction, the height of the opening can be adjusted by vertically sliding the transmitting end 41, and the support block 43 rotates around the X-axis direction to change the direction of the opening, so that the opening can be suitable for fingers or the soles of newborn babies.

[0036] Among them, see Figure 4 As shown, sliding holes 453 are vertically provided on the fixed portion 44 and the sliding portion 45, one end of the transmitting end 41 is slidably installed in the sliding hole 453 of the fixed portion 44, and is fixedly connected to the second transmitting wire 323, and the other end of the transmitting end 41 is fixedly connected to an elastic band 411, one end of the elastic band 411 passes through the sliding hole 453 of the sliding portion 45, and is bonded to the side wall of the supporting block 43; the sliding hole 453 is provided to limit the moving direction of the transmitting end 41, and the height of the opening is adjusted, and the elastic band 411 and the transmitting end 41 can be tightened and pressed on the corresponding position by providing a bondable elastic band 411.

[0037] In this embodiment, the elastic band 411 and the support block 43 are bonded together with Velcro.

[0038] Among them, see Figure 5 The upper end surface of the support block 43 is provided with a dovetail groove 431, and two elastic strips 46 are arranged at intervals on the upper end surface of the support block 43. The sliding part 45 includes a dovetail block 451 and a vertical plate 452. The dovetail block 451 is slidably installed in the dovetail groove 431, and the lower end surface of the vertical plate 452 is symmetrically provided with notches about the dovetail groove 431. The two elastic strips 46 pass through the corresponding notches respectively; by setting the notches and the elastic strips 46, the elasticity of the elastic strips 46 itself makes the friction between the vertical plate 452 and the elastic strips 46 larger, so that the dovetail block 451 is not easy to slide in the dovetail groove 431 without external force, thereby ensuring the clamping effect; the elastic strips 46 are provided, and after the opening becomes larger, the lower part of the sole of the foot contacts the elastic strips 46, which improves the comfort compared to directly contacting with the support block 43.

[0039] Among them, see Figure 4 The support block 43 and the fixing portion 44 are respectively fixedly connected with a first limiting plate 47 and a second limiting plate 48 on one side close to the second transmitting wire 323. The first limiting plate 47 is located below the second receiving wire 322, and the second limiting plate 48 is located below the second transmitting wire 323. A plurality of limiting posts 49 are arranged on the first limiting plate 47 and the second limiting plate 48, and the plurality of limiting posts 49 are located on the inner side of the bending part of the second transmitting wire 323 and the second receiving wire 322. Through the combination of the first limiting plate 47, the second limiting plate 48 and the limiting posts 49, the bending radius of the optical fiber part is limited to avoid excessive bending of the optical fiber and affect signal transmission.

[0040] In other embodiments, the transmission component 3 may use a wire wrapped in a magnetic shielding mesh, the blood oxygen probe 4 may use a non-metallic probe, a mounting plate is provided on the bed 2, the wire is passed through a through hole on the mounting plate, and the wire is limited.

[0041] Among them, see Figure 8 , and also includes a sound insulation blanket 5, which is used to wrap the baby. The sound insulation blanket 5 is provided with a notch, and an adhesive tape is provided on the inner side of the notch. When in use, the notch is passed through the second fixing frame 43, and the adhesive tape is bonded to the side wall of the support block 43. After wrapping, the position of the baby can be fixed to prevent the baby from turning over and moving.

[0042] The usage and principle of this embodiment are as follows: According to the detection part of the detected person, the first connector 312 is engaged in the corresponding slot 311 on the first mounting frame 31. The detected person lies on the bed 2. According to the blood oxygen monitoring part of the detected person, the position of the sliding part 45 is adjusted, the transmitting end 41 is lifted, and the finger or the sole of the foot is passed between the fixing part 44 and the sliding part 45. After the opening is tightened by tightening the elastic band 411, the elastic band 411 is fixed on the supporting block 43 to complete the clamping of the blood oxygen probe 4. Push the bed 2 until the first connector 312 is connected to the second connector 321. Figure 6 and Figure 7 , so that the optical fibers are connected, the first transmitting wire 314 transmits the light beam to the second transmitting wire 323, the light beam passes through the monitored part through the transmitting end 41, and after being received by the receiving end 42, the light beam is transmitted back to the blood oxygen monitor through the second receiving wire 322 and the first receiving wire 313.

[0043] This embodiment further provides a detection method, according to the above-mentioned magnetic resonance compatible oxygen saturation detection system, characterized in that it includes the following steps: S1: adjusting the opening size of the blood oxygen sensor 4 according to the blood oxygen monitoring part of the person being tested; S2: The person being tested lies on the bed 2 and clamps his fingers or soles of his feet through the blood oxygen sensor 4; S3: Push the bed 2 to the designated position, start the blood oxygen monitor, and start the magnetic resonance imaging and blood oxygen monitoring.

[0044] In this embodiment, during magnetic resonance imaging, the above-mentioned blood oxygen saturation detection system is used to simultaneously monitor blood oxygen, detect blood oxygen abnormalities in a timely manner, and reduce the risk of suffocation of the person being tested.

[0045] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A magnetic resonance compatible oxygen saturation detection system, including a blood oxygen monitor, characterized in that: It also includes a transmission component and a blood oxygen probe, wherein the transmission component shields the magnetic field in the magnetic resonance device, and the blood oxygen probe is non-metallic and can adjust the opening size to clamp the fingers or the soles of the feet of newborns; The blood oxygen probe is arranged on a bed which can slide along the Y-axis direction, one end of the transmission component is connected to the blood oxygen monitor, the other end of the transmission component extends into the cylindrical shell of the magnetic resonance device and is connected to the blood oxygen probe, and transmits the signal of the blood oxygen probe to the blood oxygen monitor.

2. The magnetic resonance compatible oxygen saturation detection system according to claim 1, characterized in that: The bed body is provided with a mounting plate, the mounting plate is provided with a through hole, and the transmission component adopts a conductor wrapped with a magnetic shielding net and is passed through the through hole.

3. The magnetic resonance compatible oxygen saturation detection system according to claim 1, characterized in that: The transmission assembly includes a first mounting frame fixed to the outside of the cylinder and a second mounting frame fixed to the bed, the first mounting frame is mounted with a first receiving wire and a first transmitting wire, the second mounting frame is mounted with a second receiving wire and a second transmitting wire, when the bed slides to the detection position, the first receiving wire is connected to the second receiving wire, and the first transmitting wire is connected to the second transmitting wire; The second transmitting wire and the second receiving wire are both connected to the blood oxygen probe.

4. The magnetic resonance compatible oxygen saturation detection system according to claim 3, characterized in that: The blood oxygen probe includes a transmitting end, a receiving end and a supporting block that can rotate around the X-axis direction. The supporting block is installed on the bed. The upper end surface of the supporting block is equipped with a fixed part and a sliding part that can slide along the X-axis direction. The receiving end is fixedly installed on the upper end surface of the supporting block and is located between the fixed part and the sliding part. The transmitting end is vertically slidably installed between the fixed part and the sliding part and is located above the receiving end.

5. The magnetic resonance compatible oxygen saturation detection system according to claim 4, characterized in that: The fixed part and the sliding part are vertically provided with sliding holes, one end of the transmitting end is slidably mounted in the sliding hole of the fixed part and fixedly connected to the second transmitting wire, the other end of the transmitting end is fixedly connected to an elastic band, one end of the elastic band passes through the sliding hole of the sliding part and is bonded to the side wall of the supporting block The magnetic resonance compatible oxygen saturation detection system according to claim 4, characterized in that: A dovetail groove is provided on the upper end surface of the support block, and two elastic strips are arranged at intervals on the upper end surface of the support block. The sliding part includes a dovetail block and a vertical plate. The dovetail block is slidably installed in the dovetail groove, and the lower end surface of the vertical plate is symmetrically provided with notches about the dovetail groove, and the two elastic strips pass through the corresponding notches respectively.

6. The magnetic resonance compatible oxygen saturation detection system according to claim 4, characterized in that: The support block and the fixing portion are respectively fixedly connected with a first limiting plate and a second limiting plate on one side close to the second transmitting wire, the first limiting plate is located below the second receiving wire, the second limiting plate is located below the second transmitting wire, and a plurality of limiting columns are arranged on the first limiting plate and the second limiting plate, and the plurality of limiting columns are located on the inner sides of the bending parts of the second transmitting wire and the second receiving wire.

7. The magnetic resonance compatible oxygen saturation detection system according to claim 3, characterized in that: The first mounting frame is provided with a plurality of slots spaced apart along the Y-axis direction. The first receiving wire and the first transmitting wire are both installed on the first connector. The first connector can be inserted into any slot. The second receiving wire and the second transmitting wire both extend in a direction away from the first connector and are both installed on the second connector. After the bed slides to a designated position, the first connector is connected to the second connector, and the first receiving wire is connected to the second receiving wire, and the first transmitting wire is connected to the second transmitting wire.

8. The magnetic resonance compatible oxygen saturation detection system according to claim 3, characterized in that: Also included is a soundproofing blanket that is used to wrap an infant.

9. A detection method, according to the magnetic resonance compatible oxygen saturation detection system according to any one of claims 1 to 9, characterized in that: The steps include: S1: Adjust the opening size of the blood oxygen sensor according to the blood oxygen monitoring part of the person being tested; S2: The person being tested lies on the bed and clamps his fingers or soles of his feet through the blood oxygen probe; S3: Push the bed to the designated position, start the blood oxygen monitor, and start magnetic resonance imaging and blood oxygen monitoring.

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