WO2010106597A1 - Dispositif de production de signal pour synchronisation respiratoire, et unité de capteur de détection de mouvement corporel - Google Patents

Dispositif de production de signal pour synchronisation respiratoire, et unité de capteur de détection de mouvement corporel Download PDF

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Publication number
WO2010106597A1
WO2010106597A1 PCT/JP2009/006301 JP2009006301W WO2010106597A1 WO 2010106597 A1 WO2010106597 A1 WO 2010106597A1 JP 2009006301 W JP2009006301 W JP 2009006301W WO 2010106597 A1 WO2010106597 A1 WO 2010106597A1
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sensor unit
container
patient
thin film
pressure
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PCT/JP2009/006301
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English (en)
Japanese (ja)
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武藤昭男
秋山守人
福田修
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株式会社ホンダ・ハドロニクス
独立行政法人産業技術総合研究所
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Publication of WO2010106597A1 publication Critical patent/WO2010106597A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/113—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb occurring during breathing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6892—Mats
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/541—Control of apparatus or devices for radiation diagnosis involving acquisition triggered by a physiological signal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring

Definitions

  • the present invention is controlled based on a respiratory synchronization signal input from the outside, and is capable of suppressing the influence of body movement due to respiration, a CT scanning device, a PET device, a radiation therapy simulation device, a radiation
  • the present invention relates to a respiratory synchronization signal generation device capable of generating and outputting the respiratory synchronization signal to a medical device such as a treatment device, and a body motion detection sensor unit that detects a respiratory motion.
  • a so-called tomography device is well known as a medical device that can take a tomographic image of a human body cut at an arbitrary part.
  • a CT scan device that takes an image by exposing X-rays, and a patient is given a radioactive tracer.
  • a PET apparatus that detects and captures gamma rays emitted from a radioactive tracer is known.
  • medical equipment in which a predetermined device is added to a tomographic apparatus is also known, and so-called radiation therapy simulation apparatuses, radiation therapy apparatuses, and the like are known.
  • the radiotherapy simulation apparatus is an apparatus that can take a tomographic image of a patient and perform a radiotherapy simulation based on the acquired tomographic image, thereby making a treatment plan.
  • the radiotherapy apparatus is an apparatus that irradiates an affected area with radiation by an operator operating the apparatus based on a radiotherapy plan.
  • the CT scanning apparatus is composed of a gantry having an opening with a predetermined inner diameter penetrating the center, a bed on which a patient lies, and a computer for processing data.
  • a gantry having an opening with a predetermined inner diameter penetrating the center, a bed on which a patient lies, and a computer for processing data.
  • an X-ray source that emits X-rays and a detector array composed of a large number of sensors that detect X-rays transmitted through the human body are arranged at positions facing each other across the opening.
  • the radiation source and the detector array can be rotated in the circumferential direction around the opening.
  • the opening is configured so that a patient who is supine on the bed is inserted together with the bed.
  • a tomographic image is obtained with such a CT scanning apparatus
  • a patient who is lying on the bed by driving the bed is inserted into the opening of the gantry, and a predetermined region to be imaged is located in the X-ray exposure field. Like that. Then, while rotating the X-ray source and the detector array, X-rays are emitted from different directions, and the X-ray transmitted through the human body is detected by the detector array.
  • the data detected in this way is processed in an integrated manner by a computer, one tomographic image is obtained.
  • the bed is driven to move the region to be imaged little by little, and a plurality of tomographic images are captured. If it does so, the site
  • the patient is careful not to move on the bed, but the patient moves due to a slight movement, that is, a body movement due to a breathing movement or heartbeat. If the patient moves due to body movement, a shift occurs between a plurality of tomographic images to be photographed, so that a three-dimensional tomographic image cannot be obtained clearly. If it does so, a tumor cannot be overlooked in a diagnosis, or the position of a tumor cannot be pinpointed correctly.
  • Patent Document 1 describes a CT scan device that obtains a heart beat synchronization signal by an electrocardiogram detection sensor affixed to a patient's chest and images a tomographic image of the heart.
  • the CT scanning device described in Patent Document 1 since the CT scanning device is controlled in synchronization with the heartbeat, a tomographic image can be taken without being affected by the heartbeat, and a clear tomographic image of the heart can be obtained. can get.
  • the breathing operation is not taken into consideration, if a tomographic image of a part other than the heart is captured, the tomographic image becomes blurred due to the breathing motion. It is necessary to detect a respiratory action and transmit a synchronization signal to the tomography apparatus.
  • Known methods for detecting the movement of breathing include, for example, a method for detecting vertical movement of the chest, a method for detecting expansion and contraction of the abdomen, and a method for detecting skin tension.
  • the method of detecting the vertical movement of the chest includes a method using a marker and a method using a measuring rod.
  • the method using the marker detects the vertical movement of the chest by monitoring the marker attached to the chest of the patient with an external CCD camera.
  • one end of the measuring rod is brought into contact with the patient's chest, a fulcrum of the measuring rod is provided near the patient, and the vertical movement of the chest is amplified at the other end. It is a method to detect.
  • the method for detecting the expansion and contraction of the abdomen is a method for detecting the expansion and contraction of the abdomen by detecting the change in the tension of the belt wound around the abdomen or the air pressure in the hollow belt. Is a method in which a strain sensor is affixed to the patient's body surface and the tension of the skin is detected to detect breathing motion.
  • Patent Document 2 describes a sheet-like piezoelectric sensor that is provided on a bed on which a patient lies, and that can detect body movements due to breathing motion by contacting the patient's back.
  • the piezoelectric sensor described in Patent Document 2 is a sensor having a so-called laminated structure in which a pressure detection element made of a PVDF film or an aluminum nitride thin film, that is, a sensor element is sandwiched between thin resin sheets, Body movement due to movement can be detected as a change in voltage.
  • the marker when the marker is affixed to the patient's chest, it is necessary to affix the marker at a position that does not hinder the X-ray exposure and can ensure the stability of the marker. Furthermore, other problems arise because the marker is applied to the chest. That is, during tomographic imaging, the patient cannot wear a cold blanket, and when performing radiotherapy, the marker interferes with radiation irradiation. There is also a problem with the measurement method. In the measuring rod, the fixing tool for fixing the fulcrum hinders X-ray exposure, and the entire measuring rod may be reflected in the image. Furthermore, since the measuring rod protrudes to the outside, there is also a problem that it hits the gantry of the CT scanning device.
  • a piezoelectric sensor is provided on a bed on which the patient lies, and touches the patient's back to detect the movement of breathing. There is no such thing as hitting a photographic device.
  • the piezoelectric sensor is made of a PVDF film or an aluminum nitride thin film, it is relatively difficult to appear in a tomographic image.
  • the piezoelectric sensor described in Patent Document 2 will not appear in the image at all depending on the configuration.
  • such a pressure detection element that is, a sensor element has a problem that durability is not high.
  • the pressure detection element is sandwiched and protected by a thin resin sheet, and the durability is improved to some extent.
  • the pressure detection element Will deteriorate early. If the thickness of the resin sheet sandwiching the pressure detection element is increased, the durability is improved, but another problem that the sensitivity of the sensor is lowered arises.
  • a signal line for transmitting the detected voltage to the outside is provided in such a pressure detection element.
  • the pressure detection element is formed in a thin film shape, the junction between the pressure detection element and the signal line The strength of is weak and problematic.
  • the piezoelectric sensor described in Patent Document 2 since the pressure detection element is directly placed on the patient's back to detect pressure fluctuation, the joint portion is damaged early and the signal line is disconnected. There is a high risk of losing.
  • aluminum nitride can generally be manufactured only in a small area, the back portion where the change in pressure can be detected becomes a small area, and depending on the portion to be contacted, the respiratory action cannot be detected reliably.
  • the piezoelectric sensor described in Patent Document 2 is a sensor unit including a pressure detection element and a resin sheet covering the pressure detection element, this resin sheet is only for the purpose of protection. The structure is such that the pressure received by the resin sheet is transmitted to the entire pressure detecting element.
  • the pressure received from the patient's back does not necessarily act uniformly on the pressure detection element, so that the pressure received by the pressure detection element may be uneven, and the sensor detection accuracy may not be sufficiently obtained. That is, depending on the position, area, and the like where the patient's back is in contact with the piezoelectric sensor, fluctuations in pressure due to patient movement may not be detected accurately.
  • the present invention has been made in view of the above-described problems. Specifically, the present invention does not appear in an image in tomography or interfere with radiotherapy, and does not collide with a tomography apparatus.
  • An inexpensive and durable body motion detection sensor unit that has a configuration that can reliably detect body motion due to patient breathing and that can reliably detect body motion due to patient breathing without requiring skill, and this sensor unit To provide a respiratory synchronization signal generation device capable of generating a respiratory synchronization signal synchronized with the respiratory motion detected in step S1 and outputting the respiratory synchronization signal to a medical device such as a tomography apparatus or a radiotherapy apparatus It is an object.
  • the present invention provides a body motion detection sensor unit comprising: a hollow container that is flexible and has a generally flat sheet shape; and a PVDF stored in the container or another container
  • the thin film sensor element is made of aluminum nitride or zinc oxide, and the fluid is hermetically or liquid-tightly sealed in these containers. And it is comprised so that the pressure which acts on a container may act on a thin film sensor element via a fluid, and may be detected. Further, such a container is inserted into the contact portion between the back surface of the patient and the table so that the area of the pressure receiving portion is larger than the area of the thin film sensor element.
  • the body motion detection sensor unit includes a hollow first container that is flexible and has a flat sheet shape, a hollow second container, and a hollow portion.
  • a conduit connecting them so as to communicate with each other, a thin film sensor element made of PVDF, aluminum nitride, or zinc oxide stored in the second container, and hermetically or liquid tightly inside the container It is comprised from the enclosed fluid, and it comprises so that the pressure which acts on a 1st container may act on a thin film sensor element via a fluid.
  • the apparatus is configured as a respiratory synchronization signal generation device that receives a change in pressure detected by such a body motion detection sensor unit and generates a respiratory synchronization signal synchronized with respiration.
  • the invention according to claim 1 is provided on a bed on which a patient lies in a medical device such as a CT scan device, a PET device, a radiation treatment simulation device, and a radiation treatment device,
  • a sensor unit that is inserted into a contact portion between a patient's back surface and a table to detect a change in pressure accompanying a breathing operation, and the sensor unit is stored in the hollow container having flexibility and the container.
  • the acting pressure is configured to be detected by acting on the thin film sensor element via the fluid.
  • the area of the pressure receiving portion inserted into the contact portion between the back surface of the patient and the table is larger than the area of the thin film sensor element. It is comprised so that it may become.
  • the device in a medical device such as a CT scan device, a PET device, a radiation treatment simulation device, or a radiation treatment device, the device is provided on a bed on which the patient lies, and the back surface of the patient is in contact with the table.
  • a sensor unit that is inserted into a part to detect a change in pressure associated with a breathing operation, the sensor unit having a hollow first container that is flexible and has a flat sheet shape, and a hollow The second container, the pipes connecting the first and second containers and communicating the hollow portions thereof, and PVDF, aluminum nitride, or zinc oxide stored in the second container.
  • a thin film sensor element, and fluids hermetically or liquid-tightly sealed in the first and second containers and the conduit, and pressure acting on the first container is mediated by the fluid.
  • the invention according to claim 4 is the sensor unit according to any one of claims 1 to 3, wherein the fluid is a liquid made of silicon oil or mineral oil.
  • the fluid is configured to be a gas composed of air or an inert gas.
  • a change in pressure detected by the body motion detection sensor unit according to any one of the first to fifth aspects is received, and a respiratory synchronization signal synchronized with respiration is generated.
  • the body motion detection sensor unit is provided with a transmitter for the respiratory synchronization signal.
  • the signal generating device is provided with a receiver corresponding to the transmitter, and is configured to transmit and receive the pressure change signal by Bluetooth communication or near infrared communication.
  • a video output terminal to which a monitor is connected is provided, and the respiratory waveform and the respiratory synchronization signal are graphed. Can be output.
  • the body motion detection sensor unit includes a flexible hollow container, a thin film sensor element made of PVDF, aluminum nitride, or zinc oxide stored in the container, and a container. It is formed so as to form a flat sheet from the fluid hermetically or liquid tightly sealed, and the pressure acting on the container is detected by acting on the thin film sensor element via the fluid. Therefore, the pressure can be reliably detected via the fluid, and the breathing motion can be detected without requiring skill.
  • the thin film sensor element is not subjected to direct force but pressure is applied via the fluid, so that the thin film sensor element does not deteriorate at an early stage, and the signal line connected to the thin film sensor element is not affected.
  • the body motion detection sensor unit is provided on a bed on which the patient lies, and is configured as a sensor unit that is inserted into a contact portion between the back surface of the patient and the table and detects a change in pressure accompanying a breathing operation. Therefore, the sensor unit does not collide with the tomography apparatus and does not hinder radiotherapy. Furthermore, since a thin film sensor element made of PVDF, aluminum nitride, or zinc oxide hardly absorbs X-rays, there is almost no risk of being reflected in a tomographic image.
  • the container of the body motion detection sensor unit is configured to be inserted into the contact portion of the back surface of the patient and the table so that the area of the pressure receiving portion is larger than the area of the thin film sensor element. It becomes possible to reliably detect a change in pressure. And according to the other structure of this invention, since a body movement detection sensor unit is comprised from the fluid enclosed with the hollow 1st container, the hollow 2nd container, the thin film sensor element, and the container. If the first container is laid on the patient's back, the first container does not absorb X-rays, so the sensor does not appear in the tomographic image and a clear tomographic image can be obtained. .
  • the thin film sensor element since the thin film sensor element is stored in a second container that is a container different from the first container that directly receives pressure, the thin film sensor element does not bend or deteriorate. Furthermore, there is no possibility that the signal line connected to the thin film sensor element is disconnected from the thin film sensor element. That is, the durability is very high. Furthermore, according to the present invention, since the fluid sealed in such a container is also configured to be a gas composed of air or an inert gas, even if the container is broken, liquid leakage, etc. Thus, the safety of expensive medical equipment can be ensured.
  • the respiratory synchronization signal generation device that receives the signal from the body motion detection sensor unit by Bluetooth communication or near infrared communication and generates a respiratory synchronization signal, the sensor and the respiratory synchronization signal Since the generation device does not cause a malfunction of the medical device and the signal line does not get in the way, it is possible to safely install the signal generation device for respiratory synchronization.
  • the respiratory synchronization signal generation device is provided with a video output terminal so that the respiratory waveform and the respiratory synchronization signal can be graphed and output, so if a monitor is installed in the operator room, An operator who operates a device such as a tomography apparatus or a radiotherapy apparatus can confirm the breathing of the patient.
  • FIG. 1 is a perspective view schematically showing a respiratory synchronization signal generation device and a CT scanning device according to an embodiment of the present invention. It is a perspective view showing typically a body movement detection sensor unit concerning an embodiment of the invention. It is a perspective view which shows typically the flexible IC chip which is a chip
  • the respiratory synchronization signal generation apparatus will be described using a CT scan apparatus provided with the respiratory synchronization signal generation apparatus as an example.
  • the CT scanning apparatus 1 is generally configured by a gantry 2 that scans a human body, a bed 3 on which a patient lies, and the like, in the same manner as a conventionally known CT scanning apparatus.
  • the gantry 2 has a through hole having a predetermined inner diameter into which a human body is inserted at the center thereof. That is, the opening 5 is provided.
  • the gantry 2 includes an X-ray source that emits X-rays and a detector array that includes a number of sensors that detect X-rays transmitted through the human body.
  • the gantry 2 is provided with a computer that controls the gantry 2 and the bed 3 and processes data.
  • the bed 3 includes a pedestal 7 installed on the floor and a table 8 having a substantially rectangular plate shape provided on the pedestal 7. Although not shown in FIG. 1, the table 8 can be slid in the longitudinal direction by a table driving mechanism provided inside the pedestal 7. Such a bed 3 is installed adjacent to the gantry 2, and when the table driving mechanism is driven, the table 8 is inserted into the opening 5 or retracted.
  • the body motion detection sensor unit 11 is provided on the upper surface of the table 8.
  • the body movement detection sensor unit 11 is a sensor in which a pressure receiving portion that receives pressure is formed in a sheet shape, and when the patient lies on the upper surface of the table 8, , The body movement due to the movement of breathing can be detected as a change in voltage.
  • a flat cable 12 is connected to the body motion detection sensor unit 11, and a transmitter 14 is connected to the tip of the flat cable 12.
  • the transmitter 14 is fixed to the end surface of the long side of the table 8, and the flat cable 12 is sufficiently short. Therefore, the flat cable 12 and the transmitter 14 may interfere with tomographic image capturing or disturb the patient. There is no.
  • a respiratory synchronization signal generation device 16 In the vicinity of the gantry 2, a respiratory synchronization signal generation device 16 is installed, and the respiratory synchronization signal generation device 16 and the gantry 2 are connected by a predetermined signal cable 18.
  • the respiratory synchronization signal generation device 16 includes an open collector terminal, a TTL level line driver output terminal, a START / STOP output terminal, and an RS422 connection terminal, so that the signal cable 18 corresponds to the input terminal 19 of the gantry 2. Any type of cable can be selected.
  • the respiratory synchronization signal generation device 16 is provided with a receiver or a receiver so that a signal transmitted from the transmitter 14 can be received. Note that the communication between the transmitter 14 and the receiver is performed by Bluetooth communication or near-infrared communication that does not cause malfunction of the device due to electromagnetic wave leakage.
  • Such a respiratory class signal generation device 16 is also provided with a video output terminal that can output necessary information to an external monitor device. Although not shown in FIG. Is connected to a predetermined monitor provided in the operator room.
  • the breathing class signal generator 16 also includes a microphone.
  • the CT scanning device 1 emits a predetermined warning sound to call attention at the time of X-ray exposure. This warning sound can be detected and taken into the respiratory class signal generation device 16 as exposure information.
  • the body motion detection sensor unit 11 includes a hollow first container 21 having a sheet shape with a large upper surface area, and a hollow second container having a predetermined size. And the thin film sensor element 23 stored in the second container 22. Since the first container 21 is a pressure receiving portion that is inserted between the patient's back surface and the table and receives the pressure on the patient's back surface, the first container 21 is formed of a flexible material such as polyvinyl chloride or polypropylene.
  • the second container 22 is a container that protects the thin film sensor element 23, and therefore does not have to be particularly flexible. In the present embodiment, the second container 22 is formed from an acrylic resin.
  • the first and second containers 21 and 22 are connected in a gas-tight or liquid-tight manner by a connecting pipe 25 made of a flexible material, and the respective hollow portions communicate with each other.
  • the thin film sensor element 23 is a thin film piezoelectric element having a predetermined size made of PVDF (polyvinylidene fluorite), aluminum nitride, or zinc oxide. In the present embodiment, the thin film sensor element 23 is made of aluminum nitride.
  • the flat cable 12 is connected to the thin film sensor element 23 via a predetermined connection chip as described below, and the transmitter 14 is connected to the flat cable 12 as described above.
  • the body motion detection sensor unit 11, that is, the first and second containers 21 and 22 and the connecting pipe 25 are filled with silicon oil 27 and the thin film sensor element 23 is entirely immersed in the silicon oil 27. It has become.
  • the thin film sensor element 23 made of an aluminum nitride piezoelectric element and the flat cable 12 are connected by a predetermined connecting chip, that is, a flexible IC chip 30.
  • the flexible IC chip 30 is a flat chip with a cut 31, and first and second conductive wires 33 and 34 made of a copper thin film are divided by the cut 31.
  • the first small piece 35 and the second small piece 36 of the chip are provided so as to be parallel to each other.
  • the first conducting wire 33 is provided on the front surface of the chip, and the second conducting wire 34 is provided on the back surface of the chip.
  • the thin film sensor element 23 is inserted into the cut 31 by bending the flexible IC chip 30 with the first small piece 35 downward and the second small piece 36 upward. Then, as shown in FIG. 4, the thin film sensor element 23 can be sandwiched between the first and second small pieces 35 and 36 of the flexible IC chip 30.
  • the thin film sensor element 23 has a structure in which a substrate 38 made of polyimide resin and an aluminum nitride crystal layer 39 deposited thereon are covered on the upper and lower surfaces by first and second metal films 41 and 42 made of aluminum or the like. Presents.
  • the anisotropic conductive adhesives 44 and 44 are applied to the first and second metal films 41 and 42 of the thin film sensor element 23 to press the first and second small pieces 35 and 36 of the flexible IC chip 30. And glue.
  • first metal film 41 and the first conductive wire 33, and the second metal film 42 and the second conductive wire 34 are electrically connected.
  • a predetermined connector 47 is connected to the end 46 of the flexible IC chip 30, and the flat cable 12 is connected via the connector 47.
  • the thin film sensor element 23 and the flat cable 12 are connected.
  • the CT scan apparatus 1 including the respiratory synchronization signal generation apparatus will be described.
  • the patient K is supine on the table 8 of the bed 3.
  • the pressure receiving portion of the body motion detection sensor unit 11, that is, the position of the first container 21 is adjusted, and the pressure receiving portion hits a portion where the back surface of the patient and the table 8 are in contact, for example, near the shoulder rib or the hip. Insert like so.
  • Patient K moves slightly due to breathing and heart movement.
  • the pressure receiving portion of the body motion detection sensor unit 11 receives a change in pressure due to body motion.
  • the change in pressure applied via the silicon oil 27 is detected as a change in voltage in the thin film sensor element 23.
  • the respiratory synchronization signal generator 16 processes a waveform of the input voltage to generate a pulse signal synchronized with respiration, that is, a synchronization signal.
  • the generated synchronization signal is input to the gantry 2.
  • the voltage waveform includes different frequency components due to breathing motion and heartbeat, and further includes noise. Accordingly, a known analysis method such as Fourier transform or wavelet transform is applied to extract a frequency component corresponding to the breathing motion.
  • the timing of breathing can be obtained. Since the input power waveform contains many frequency components that change in a short time, an analysis method using wavelet transform is particularly effective.
  • an analysis method for example, the Japan Society of Mechanical Engineers [No. 01-5] Dissertation Symposium CD-ROM [2001.8.7, Tokyo] paper "W301 Study on unrestrained invasive measurement of respiratory and heart rate during sleep using PVDF sensor (2nd report: Wavelet transform The method described in “Detection of respiratory heartbeat used)” can be applied.
  • the table 8 is driven to insert the patient K into the opening 5 so that the site where the tomographic image is to be taken is positioned at the center of the opening 5.
  • the X-rays are exposed to take a tomographic image.
  • the pressure receiving part inserted in the contact part between the back surface of the patient K and the table, that is, the first container 21 of the body motion detection sensor unit 11 and the silicon oil 27 do not absorb X-rays. These are not reflected in.
  • the table 8 is driven to slightly insert the patient K, and a tomographic image is taken in synchronization with the synchronization signal. Thereafter, a plurality of tomographic images are taken in the same manner.
  • the screen output from the respiratory synchronization signal generator 16 is displayed, for example, as shown in FIG.
  • the screen 51 displays basic information such as the date and time 52, the patient ID 53 given to the patient K, the patient's name 54, and the like, along with the display of the respiratory waveform 56 of the patient K and the respiration synchronized with the respiratory waveform 56
  • the synchronizing signal 57 is displayed in a pulse shape. Further, the timing at which the CT scanning device 1 is exposed, that is, the exposure information 59 and the heartbeat signal 60 are also displayed.
  • the operator can monitor the breathing state while observing the display on the monitor, and give an instruction to the patient K through a voice line provided in the operator room. Then, the patient K can perform an appropriate breathing motion and can appropriately capture a tomographic image.
  • a predetermined memory is also provided in the respiratory synchronization signal generation device 16, and information displayed on the monitor is stored. Therefore, past data can also be displayed as necessary.
  • FIG. 6 shows a body motion detection sensor unit 11 ′ according to the second embodiment. Elements similar to those of the body motion detection sensor unit 11 according to the above-described embodiment are assigned the same reference numerals and will not be described in detail.
  • the body motion detection sensor unit 11 ′ according to the second embodiment includes a thin film sensor element 23 stored in a first container 21 ′, and the second container Not provided. That is, the thin film sensor element 23 is stored in a predetermined portion of the first container 21 ′ that is a pressure receiving portion. If it does in this way, it will become possible to manufacture body motion detection sensor unit 11 'more cheaply.
  • the predetermined reinforcement member is provided about the part in which the thin film sensor element 23 of the first container 21 ′ is stored, the thin film sensor element 23 can be appropriately protected.
  • the tomographic image apparatus can be variously modified.
  • the body motion detection sensor unit 11 and the respiratory synchronization signal generation device 16 are described as being wirelessly communicated by a transceiver, but may be directly connected by a predetermined signal cable.
  • a signal cable needs to be wired on the backside or edge of the table of the bed so as not to interfere with tomographic image capturing.
  • the first and second containers 21 and 22 of the body motion detection sensor unit 11 are described as being filled with silicon oil, but the same applies to other liquids such as mineral oil. be able to.
  • an inert gas such as carbon dioxide or nitrogen gas, or a gas such as air may be enclosed. Then, even if the first and second containers 21 and 22 are damaged, a liquid leakage accident does not occur.

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  • Apparatus For Radiation Diagnosis (AREA)

Abstract

La présente invention concerne une unité de capteur de détection de mouvement corporel capable de détecter avec précision le mouvement corporel provoqué par la respiration d'un patient. Ladite unité présente une durabilité élevée, ne gêne pas la prise de photographie, et ne nécessite aucune compétence. L'unité de capteur de détection de mouvement corporel (11) de l'invention est conçue à partir d'un premier boîtier (21) servant de partie de pression, d'un élément de capteur de film mince (23), et d'un second boîtier (22) contenant ledit capteur de film mince (23). Les premier et second boîtiers (21, 22) sont en communication l'un avec l'autre par le biais d'un tuyau de respiration (25), et de l'huile de silicium (27) est enfermé de manière étanche à l'intérieur. L'unité de capteur de détection de mouvement corporel (11) est pourvue d'un lit (3), et la partie de pression (21) est insérée entre le côté postérieur du patient et une table (8) de manière à détecter le mouvement corporel.
PCT/JP2009/006301 2009-03-19 2009-11-24 Dispositif de production de signal pour synchronisation respiratoire, et unité de capteur de détection de mouvement corporel WO2010106597A1 (fr)

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JP2009068484A JP2012110355A (ja) 2009-03-19 2009-03-19 呼吸同期用信号生成装置および体動検出センサ
JP2009-068484 2009-03-19

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WO2010106597A1 true WO2010106597A1 (fr) 2010-09-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011058730A1 (fr) * 2009-11-10 2011-05-19 株式会社 ホンダ・ハドロニクス Generateur de signaux pour synchronisation respiratoire, dispositif de tomographie, simulateur de rayonnement, et dispositif de radiotherapie
WO2014046054A1 (fr) * 2012-09-18 2014-03-27 住友電気工業株式会社 Dispositif de mesure de mouvement biologique et procédé de mesure de mouvement biologique
CN115192006A (zh) * 2022-09-06 2022-10-18 休美(北京)微系统科技有限公司 用于胸腹动监测的薄膜型局部贴附装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6888815B2 (ja) * 2017-05-10 2021-06-16 株式会社吉田製作所 Ｘ線撮影装置、ｘ線撮影補助装置およびｘ線撮影方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004096045A1 (fr) * 2003-05-02 2004-11-11 Seijiro Tomita Procede et dispositif de differenciation d'individus
JP2005143661A (ja) * 2003-11-12 2005-06-09 Toshiba Corp 画像診断装置用寝台
JP2006158656A (ja) * 2004-12-07 2006-06-22 Sumitomo Rubber Ind Ltd 体動時間に基づく睡眠感判定方法及び判定装置
JP2008284164A (ja) * 2007-05-17 2008-11-27 Panasonic Electric Works Co Ltd 生体信号検出装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004096045A1 (fr) * 2003-05-02 2004-11-11 Seijiro Tomita Procede et dispositif de differenciation d'individus
JP2005143661A (ja) * 2003-11-12 2005-06-09 Toshiba Corp 画像診断装置用寝台
JP2006158656A (ja) * 2004-12-07 2006-06-22 Sumitomo Rubber Ind Ltd 体動時間に基づく睡眠感判定方法及び判定装置
JP2008284164A (ja) * 2007-05-17 2008-11-27 Panasonic Electric Works Co Ltd 生体信号検出装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011058730A1 (fr) * 2009-11-10 2011-05-19 株式会社 ホンダ・ハドロニクス Generateur de signaux pour synchronisation respiratoire, dispositif de tomographie, simulateur de rayonnement, et dispositif de radiotherapie
WO2014046054A1 (fr) * 2012-09-18 2014-03-27 住友電気工業株式会社 Dispositif de mesure de mouvement biologique et procédé de mesure de mouvement biologique
JP2014057719A (ja) * 2012-09-18 2014-04-03 Sumitomo Electric Ind Ltd 生体動作計測装置および生体動作計測方法
CN115192006A (zh) * 2022-09-06 2022-10-18 休美(北京)微系统科技有限公司 用于胸腹动监测的薄膜型局部贴附装置
CN115192006B (zh) * 2022-09-06 2022-12-06 休美(北京)微系统科技有限公司 用于胸腹动监测的薄膜型局部贴附装置

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