WO2022190821A1 - 壁厚み推定方法、コンピュータプログラム、壁厚み推定装置及び壁厚み推定システム - Google Patents
壁厚み推定方法、コンピュータプログラム、壁厚み推定装置及び壁厚み推定システム Download PDFInfo
- Publication number
- WO2022190821A1 WO2022190821A1 PCT/JP2022/006662 JP2022006662W WO2022190821A1 WO 2022190821 A1 WO2022190821 A1 WO 2022190821A1 JP 2022006662 W JP2022006662 W JP 2022006662W WO 2022190821 A1 WO2022190821 A1 WO 2022190821A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wall
- information
- thickness
- blood vessel
- organ
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 84
- 238000004590 computer program Methods 0.000 title claims description 5
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 98
- 210000000056 organ Anatomy 0.000 claims abstract description 90
- 206010002329 Aneurysm Diseases 0.000 claims description 55
- 201000008450 Intracranial aneurysm Diseases 0.000 claims description 51
- 230000002792 vascular Effects 0.000 claims description 36
- 238000002583 angiography Methods 0.000 claims description 23
- 230000010365 information processing Effects 0.000 claims description 14
- 230000002123 temporal effect Effects 0.000 claims description 9
- 210000001367 artery Anatomy 0.000 claims description 7
- 210000003462 vein Anatomy 0.000 claims description 6
- 206010046996 Varicose vein Diseases 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 23
- 210000002216 heart Anatomy 0.000 description 17
- 238000007428 craniotomy Methods 0.000 description 13
- 238000011282 treatment Methods 0.000 description 13
- 238000002591 computed tomography Methods 0.000 description 12
- 238000002595 magnetic resonance imaging Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 201000010099 disease Diseases 0.000 description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 241001465754 Metazoa Species 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000003187 abdominal effect Effects 0.000 description 3
- 230000003542 behavioural effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 239000002473 artificial blood Substances 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 208000019553 vascular disease Diseases 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010968 computed tomography angiography Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000002350 laparotomy Methods 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000000968 medical method and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000004165 myocardium Anatomy 0.000 description 1
- 210000000496 pancreas Anatomy 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 210000005241 right ventricle Anatomy 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
- 230000009278 visceral effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
- A61B6/5217—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data extracting a diagnostic or physiological parameter from medical diagnostic data
-
- 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
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1075—Measuring physical dimensions, e.g. size of the entire body or parts thereof for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer
-
- 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
- A61B6/48—Diagnostic techniques
- A61B6/486—Diagnostic techniques involving generating temporal series of image data
-
- 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
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/504—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of blood vessels, e.g. by angiography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/02007—Evaluating blood vessel condition, e.g. elasticity, compliance
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
Definitions
- the present invention relates to a wall thickness estimation method for estimating the thickness of an organ wall or blood vessel wall.
- a cerebral aneurysm which is an example of a vascular disease, is an extremely high-risk disease with a fatality rate exceeding about 50% once it ruptures, and a high rate of sequelae. . Therefore, preventive treatment (preemptive medicine) to prevent cerebral aneurysm rupture is highly important, and appropriate therapeutic intervention is essential.
- the information for example, thickness
- cerebral aneurysm rupture is more likely to occur in areas where the aneurysm wall is thinner than in areas where the aneurysm wall is thicker.
- the shape such as the thickness of the aneurysm wall varies from cerebral aneurysm to cerebral aneurysm.
- CT Computer Tomography
- MRI Magnetic Resonance Imaging
- MRA Magnetic Resonance Angiography
- the ultrasonic diagnostic apparatus disclosed in Patent Document 1 is known as a minimally invasive technique for predicting the thickness of a blood vessel wall such as an aneurysm wall of a cerebral aneurysm.
- Patent Literature 1 discloses an ultrasonic diagnostic apparatus that generates image data using ultrasonic signals and displays information about the thickness of a blood vessel wall of a subject based on the image data.
- the present invention proposes useful information for performing specific treatments for diseases of organs or blood vessels by generating highly accurate information on the walls of organs or blood vessels using a minimally invasive technique.
- the purpose is to provide methods such as
- a computer program according to an aspect of the present invention causes a computer to execute the wall thickness estimation method described above.
- the wall thickness estimation method and the like of the present invention by generating highly accurate information on the organ wall or blood vessel wall by a minimally invasive technique, it is useful for performing specific treatments for diseases of the organ or blood vessel. information can be proposed.
- FIG. 1 is a diagram showing the configuration of a wall thickness estimation system according to an embodiment.
- FIG. 2 is a block diagram showing a characteristic functional configuration of the wall thickness estimation device according to the embodiment.
- FIG. 3 is a perspective view showing a cerebral aneurysm according to the embodiment.
- FIG. 4 is a cross-sectional view of the cerebral aneurysm according to the present embodiment taken along line IV-IV in FIG.
- FIG. 5 is a cross-sectional view of the cerebral aneurysm according to this embodiment taken along line VV in FIG.
- FIG. 6 is a flowchart showing a processing procedure for estimating the aneurysm wall thickness of a cerebral aneurysm by the wall thickness estimation device according to the embodiment.
- FIG. 7 is a diagram for explaining distortion at a predetermined point according to the embodiment.
- FIG. 8 is another diagram for explaining distortion at a predetermined point according to the embodiment.
- FIG. 9 is a diagram showing an example of estimation information according to the embodiment.
- FIG. 10 is a diagram showing another example of estimation information according to the embodiment.
- FIG. 11 is a diagram showing another example of estimation information according to the embodiment.
- FIG. 12 is a diagram showing another example of estimation information according to the embodiment.
- FIG. 13 is a diagram showing another example of estimation information according to the embodiment.
- FIG. 14 is a diagram showing another example of estimation information according to the embodiment.
- FIG. 15 is a diagram showing another example of estimation information according to the embodiment.
- FIG. 16 is a diagram showing another example of estimation information according to the embodiment.
- FIG. 1 is a diagram showing the configuration of a wall thickness estimation system 1000 according to this embodiment.
- the wall thickness estimation system 1000 uses four-dimensional angiography to acquire behavior information, which is numerical information about changes in the position of each predetermined point over time, from a moving image including the organ wall or blood vessel wall of the subject P. Furthermore, the wall thickness estimation system 1000 is a system that generates estimation information for estimating the thickness of the organ wall or blood vessel wall based on the acquired behavior information. For example, the wall thickness estimation system 1000 estimates the thickness of a cerebral aneurysm, which is an example of the subject P's blood vessel wall.
- 4D angiography is a method that takes into account the time axis of 3D angiography.
- Three-dimensional angiography is a method of collecting three-dimensional blood vessel data using an X-ray CT device or an MRI device and extracting blood vessel information.
- the four-dimensional angiography method using an X-ray CT apparatus is also called 4DCTA (4 Dimensional Computed Tomography Angiography).
- a moving image is obtained by 4D angiography.
- the moving image may be a time series of three or more still images, and may be, for example, a moving image covering the time when the heart beats n times (n is a natural number).
- the moving image may be a moving image within a predetermined period of time.
- the predetermined time may be, for example, m seconds (m is a natural number).
- the organ wall is the wall of the organ, and the organ includes the chest organ and the abdominal organ.
- chest organs include heart and lungs
- abdominal organs include but are not limited to stomach, intestine, liver, kidney and pancreas.
- the organ may also include a thoracic organ with a lumen and an abdominal organ with a lumen.
- An organ wall may be, for example, a wall that separates the organ in question from an organ or organ other than the organ in question.
- the organ wall when the organ is the heart, the organ wall is a wall composed of muscle (myocardium) separating the heart from other organs.
- the organ wall may be, for example, a wall that separates regions within the organ.
- the organ wall when the organ is the heart, the organ wall is the ventricular middle wall separating the left ventricle and the right ventricle, which are examples of regions within the heart.
- the wall thickness estimation system 1000 includes a wall thickness estimation device 100, a display device 200, a moving image information processing device 300, and a moving image capturing device 400.
- the moving image capturing device 400 is a device that generates moving images including organ walls or blood vessel walls using four-dimensional angiography.
- the moving image capturing device 400 is, for example, an X-ray CT device or an MRI device.
- the moving image capturing apparatus 400 is an X-ray CT apparatus, and includes an X-ray tube that emits X-rays, a detector that receives signals, and a computer.
- the detector is located on the opposite side of the X-ray tube and detects the X-rays after they pass through Subject P's body.
- a computer generates a moving image including organ walls or blood vessel walls in a specific part of the subject P by utilizing the fact that X-ray absorption differs depending on the part of the subject P's body.
- the moving image capturing device 400 also has a function of measuring and acquiring the subject P's electrocardiogram waveform.
- a method using an X-ray CT device or MRI device and a four-dimensional angiography method does not require incision or the like, which imposes a heavy burden on the body of the subject P, unlike methods such as open surgery, open heart surgery, or craniotomy. It is a minimally invasive technique. Also, a technique using an X-ray CT device or an MRI device and a four-dimensional angiography method can generate highly precise moving images.
- the moving image information processing device 300 acquires a moving image including an organ wall or a blood vessel wall generated by the moving image capturing device 400 using a four-dimensional angiography method, and detects each of a plurality of predetermined points on the organ wall or the blood vessel wall. Generates behavior information, which is numerical information about the time change of the position of . In other words, the behavior information is information based on moving images including organ walls or blood vessel walls obtained using four-dimensional angiography.
- the behavior information is a set of a specific time in a moving image and three-dimensional coordinate positions of each of a plurality of predetermined points on the organ wall or blood vessel wall at the specific time.
- This is numerical information in which a plurality of sets are arranged according to the passage of time for one pulsation of the heart in the image. It should be noted that the plurality of predetermined points means a minimal area.
- the moving image information processing device 300 outputs behavior information to the wall thickness estimation device 100 .
- the moving image information processing apparatus 300 is, for example, a personal computer, but may be a server apparatus with high computing power connected to a network.
- the wall thickness estimation device 100 acquires the behavior information generated by the moving image information processing device 300, generates estimation information for estimating the thickness of the organ wall or the blood vessel wall based on the acquired behavior information, The generated estimation information is output to display device 200 .
- Wall thickness estimation device 100 is, for example, a personal computer, but may be a server device with high computing power connected to a network.
- FIG. 2 is a block diagram showing a characteristic functional configuration of the wall thickness estimation device 100 according to this embodiment.
- Wall thickness estimation device 100 includes acquisition section 110 , generation section 120 , and output section 130 .
- the estimation information is information that visualizes the distortion of each of a plurality of predetermined points for estimating the thickness of the organ wall or blood vessel wall.
- the output unit 130 outputs the estimation information generated by the generation unit 120.
- the output unit 130 may output the estimation information generated by the generation unit 120 to the display device 200 .
- the output unit 130 is, for example, a communication interface that performs wired communication or wireless communication.
- the generation unit 120 generates estimated information using the strain calculated as described above (more specifically, the maximum principal strain).
- the estimated information is, for example, image data in which information about the calculated maximum principal strain is shown as a schematic diagram.
- the output unit 130 outputs the estimated information generated by the generation unit 120 (output step S103).
- the output unit 130 transmits the image data generated by the generation unit 120 in the generation step S102 to the display device 200, for example.
- the display device 200 acquires the image data output by the output unit 130 and displays an image based on the image data.
- the principal strain is calculated for the cerebral aneurysm 10a of the case, and the estimated information is generated by the maximum principal strain among these principal strains.
- the predetermined number of points is the maximum number of points allowed by the calculation capability of the wall thickness estimation device 100, for example, 100,000 predetermined points. is used. Note that the number of predetermined points is not limited to 100,000, and a number larger than 100,000 may be selected.
- the maximum principal strain is calculated for each of the plurality of (for example, 100000) predetermined points.
- FIG. 9 is a diagram showing an example of estimation information according to the present embodiment.
- FIG. 9 is a diagram of image data showing a schematic diagram of the relationship between the shape of a cerebral aneurysm 10a and the maximum principal strain, which is an example of estimated information.
- large dots or small dots are added to locations corresponding to a plurality of predetermined points of cerebral aneurysm 10a, and these two types of dots indicate the shape of cerebral aneurysm 10a in the case.
- a large dot corresponds to a predetermined point at which a maximum principal strain that expands at a predetermined rate or more occurs, and a small dot corresponds to another predetermined point.
- large dots or small dots are illustrated in the image data shown in FIG. Each is the same size.
- Craniotomy revealed the shape of the cerebral aneurysm and areas of thin vessel wall in that shape.
- the wall thickness estimation method according to the present embodiment generates highly accurate information about the vascular wall using a minimally invasive technique, thereby providing useful information for performing specific treatments for vascular diseases.
- the wall thickness estimation method according to the present embodiment can be used for estimating the thickness of not only blood vessel walls but also organ walls.
- a moving image including the vascular wall is generated using an X-ray CT device or MRI device and a four-dimensional angiography method.
- moving images including vascular walls can be obtained by a minimally invasive technique compared to techniques such as craniotomy.
- the wall thickness estimation method can generate estimation information in which the distortion of each of a plurality of predetermined points for estimating the thickness of the blood vessel wall is visualized using the behavior information about the moving image. It was shown that the vascular wall thickness estimated based on the estimated information corresponds to the vascular wall thickness obtained by craniotomy.
- the wall thickness estimation method can estimate the thickness of the aneurysm or varicose vein wall as the thickness of the blood vessel wall.
- the wall thickness estimation device 100 also includes an acquisition unit 110, a generation unit 120, and an output unit .
- the acquisition unit 110 acquires numerical information regarding temporal changes in the positions of a plurality of predetermined points on the organ wall or blood vessel wall, based on a moving image containing the organ wall or blood vessel wall obtained using four-dimensional angiography. Get the behavior information that is Based on the behavior information acquired by the acquisition unit 110, the generation unit 120 generates estimation information, which is information in which the distortion of each of a plurality of predetermined points for estimating the thickness of the organ wall or blood vessel wall is visualized. do.
- the output unit 130 outputs the estimated information generated by the generation unit 120 .
- a moving image including the vascular wall is generated using an X-ray CT device or MRI device and four-dimensional angiography.
- moving images including vascular walls can be obtained by a minimally invasive technique compared to techniques such as craniotomy.
- the wall thickness estimating apparatus 100 can generate estimation information in which the distortion of each of a plurality of predetermined points for estimating the thickness of the blood vessel wall is visualized using the behavior information about the moving image. It was shown that the vascular wall thickness estimated based on the estimated information corresponds to the vascular wall thickness obtained by craniotomy.
- the wall thickness estimation device 100 can generate highly accurate information about the wall thickness near each of a plurality of predetermined points on the blood vessel wall.
- the thickness of the aneurysm wall 11 of the cerebral aneurysm 10 is estimated.
- Such information is useful information for, for example, distinguishing between cerebral aneurysms that tend to grow and rupture from those that do not tend to grow and rupture, and to appropriately determine the need for treatment.
- the wall thickness estimation apparatus 100 generates highly accurate information on the organ wall or blood vessel wall using a minimally invasive technique, thereby performing specific treatment for diseases of the organ or blood vessel. can suggest useful information for
- a moving image including the vascular wall is generated using an X-ray CT device or MRI device and four-dimensional angiography.
- moving images including vascular walls can be obtained by a minimally invasive technique compared to techniques such as craniotomy.
- the wall thickness estimation system 1000 can generate estimation information in which the distortion of each of a plurality of predetermined points for estimating the thickness of the blood vessel wall is visualized using the behavior information about the moving image. It was shown that the vascular wall thickness estimated based on the estimated information corresponds to the vascular wall thickness obtained by craniotomy.
- the wall thickness estimation system 1000 can generate highly accurate information about the wall thickness near each of a plurality of predetermined points on the blood vessel wall.
- the thickness of the aneurysm wall 11 of the cerebral aneurysm 10 is estimated.
- Such information is useful information for, for example, distinguishing between cerebral aneurysms that tend to grow and rupture from those that do not tend to grow and rupture, and to appropriately determine the need for treatment.
- the wall thickness estimation system 1000 can be used to estimate the thickness of not only blood vessel walls but also organ walls.
- a large dot corresponds to a predetermined point at which a maximum principal strain that expands at a predetermined rate or more occurs.
- a large dot corresponds to a predetermined point at which a maximum principal strain that expands by 5% or more with respect to the size of the microcube corresponding to each of the plurality of predetermined points occurs.
- the predetermined ratio may be 5%, 10%, or 15%. Also, this predetermined ratio is not limited to the above, and may be another ratio.
- the principal strain is used as the strain, but it is not limited to this.
- one of a total of 9 components of strain including 3 components of vertical strain and 6 components of shear strain may be used as the strain to output the estimated information.
- Engineering strain is an example of strain calculated from behavior information.
- stretch is an example of a parameter related to strain calculated from engineering strain.
- logarithmic distortion is an example of distortion calculated from behavior information.
- estimation information may be output using distortions other than the maximum principal distortion shown in this embodiment.
- the absolute value of strain is calculated as the value of strain correlated with the thickness of the organ wall or blood vessel wall. Therefore, when case findings are accumulated, it is possible to estimate the likelihood of rupture (high risk) of an organ wall or blood vessel wall based on the strain calculated from one case.
- behavior information may be obtained by the methods of Alternative Example 1 and Alternative Example 2 below.
- behavior information is obtained by using an artificially made artificial aneurysm, an artificial heart connected to the artificial aneurysm, and an imaging device.
- the artificial aneurysm may be made of, for example, silicone resin.
- the artificial aneurysm is not limited to the above as long as it is made of a flexible material.
- the artificial aneurysm is made using the image data obtained by the X-ray CT device or MRI device described above.
- This image data includes data of a human blood vessel and an aneurysm generated in the blood vessel.
- the artificial aneurysm is created based on the DICOM (Digital Imaging and Communications in Medicine) data related to the image data obtained above.
- DICOM Digital Imaging and Communications in Medicine
- the imaging device is, for example, a camera device capable of capturing still images and moving images. Furthermore, the imaging device may be a device capable of obtaining information on the three-dimensional coordinates of the surface of the observation target and displacement in the three-dimensional space. Such an imaging device can obtain the three-dimensional coordinates of the surface of the observation target, the displacement in the three-dimensional space, the velocity in the three-dimensional space, and the acceleration in the three-dimensional space by imaging for one second, five seconds, or ten seconds. You can get all information. Note that the time for which the imaging device captures images is not limited to the above, and other times may be used.
- the imaging device images the pulsating artificial aneurysm, thereby obtaining information on the three-dimensional coordinates of the surface of the artificial aneurysm and the displacement in the three-dimensional space.
- Behavior information may be obtained based on any or all of the three-dimensional coordinates and the displacement in the three-dimensional space.
- Example 1 Compared to the craniotomy described above, the method of Example 1 is a less invasive technique, so behavioral information can be obtained more easily.
- behavior information is obtained by using a model animal having an aneurysm in a blood vessel and the imaging device described above.
- the imaging device images the blood vessel and aneurysm of the model animal, thereby obtaining information on the three-dimensional coordinates of the surface of the blood vessel and aneurysm of the model animal and the displacement in the three-dimensional space.
- Behavior information may be obtained based on any or all of the information.
- data on blood vessels and aneurysms in model animals can be obtained at equal time intervals (eg, once every two weeks). Therefore, behavior information can be obtained more easily than in the embodiment.
- the thickness of the blood vessel wall is the thickness of the aneurysm wall 11 of the cerebral aneurysm 10, but as described above, it may be the thickness of the wall of a blood vessel including arteries or veins.
- the vascular wall is the thickness of a blood vessel including arteries or veins
- the degree of stenosis of the artery or vein can be estimated by using the wall thickness estimation method or the like according to the embodiment.
- each component may be implemented by dedicated hardware or by executing a software program suitable for each component.
- Each component may be realized by reading and executing a software program recorded in a recording medium such as a hard disk or a semiconductor memory by a program execution unit such as a CPU or processor.
- the wall thickness estimation method according to the present invention can be used for various purposes such as medical equipment and medical methods.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Physics & Mathematics (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Radiology & Medical Imaging (AREA)
- Optics & Photonics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- High Energy & Nuclear Physics (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Physiology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Vascular Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
[壁厚み推定システムの構成]
本実施の形態に係る壁厚み推定システム1000の構成に関して説明する。図1は、本実施の形態に係る壁厚み推定システム1000の構成を示す図である。
続いて、壁厚み推定装置100が実行する壁厚み推定方法における具体的な処理手順について説明する。ここでも、血管壁を用いて説明するが、臓器壁についても同様である。図6は、本実施の形態に係る壁厚み推定装置100が脳動脈瘤10の瘤壁11の厚みを推定する処理手順を示すフローチャートである。
次に、推定情報(より具体的には算出された歪)と血管壁の厚みとの関係性について、脳動脈瘤に関する症状の例(以下、症例と記載)を用いて説明する。
以上説明したように、壁厚み推定方法は、取得工程S101と、生成工程S102と、出力工程S103とを含む。取得工程S101は、4次元血管撮影法を用いて得られた臓器壁又は血管壁を含む動画像に基づいた、臓器壁又は血管壁における複数の所定の点のそれぞれの位置の時間変化に関する数値情報である挙動情報を取得する。生成工程S102は、取得工程S101により取得された挙動情報に基づいて、臓器壁又は血管壁の厚みを推定するための複数の所定の点のそれぞれの歪が可視化された情報である推定情報を生成する。出力工程S103は、生成工程S102により生成された推定情報を出力する。
以上、実施の形態に係る壁厚み推定方法等について説明したが、本発明は、上記実施の形態に限定されるものではない。
11 瘤壁
20 母血管
100 壁厚み推定装置
110 取得部
120 生成部
130 出力部
200 表示装置
300 動画像情報処理装置
400 動画像撮影装置
1000 壁厚み推定システム
P 被験者
p0、p1、p2、p3、p4、p5、p6、p7、p8、p9、p10、p11 点
S101 取得工程
S102 生成工程
S103 出力工程
Claims (7)
- 4次元血管撮影法を用いて得られた臓器壁又は血管壁を含む動画像に基づいた、前記臓器壁又は前記血管壁における複数の所定の点のそれぞれの位置の時間変化に関する数値情報である挙動情報を取得する取得工程と、
前記取得工程により取得された前記挙動情報に基づいて、前記臓器壁又は前記血管壁の厚みを推定するための前記複数の所定の点のそれぞれの歪が可視化された情報である推定情報を生成する生成工程と、
前記生成工程により生成された前記推定情報を出力する出力工程とを含む
壁厚み推定方法。 - 前記血管壁の厚みは、動脈瘤又は静脈瘤における瘤壁の厚みである
請求項1に記載の壁厚み推定方法。 - 前記血管壁の厚みは、脳動脈瘤における瘤壁の厚みである
請求項1又は2に記載の壁厚み推定方法。 - 前記血管壁の厚みは、動脈又は静脈における血管壁の厚みである
請求項1~3のいずれか1項に記載の壁厚み推定方法。 - 請求項1~4のいずれか1項に記載の壁厚み推定方法をコンピュータに実行させるためのコンピュータプログラム。
- 4次元血管撮影法を用いて得られた臓器壁又は血管壁を含む動画像に基づいた、前記臓器壁又は前記血管壁における複数の所定の点のそれぞれの位置の時間変化に関する数値情報である挙動情報を取得する取得部と、
前記取得部により取得された前記挙動情報に基づいて、前記臓器壁又は前記血管壁の厚みを推定するための前記複数の所定の点のそれぞれの歪が可視化された情報である推定情報を生成する生成部と、
前記生成部により生成された前記推定情報を出力する出力部とを備える
壁厚み推定装置。 - 請求項6に記載の壁厚み推定装置と、
前記動画像を取得し、前記挙動情報を生成して前記取得部に出力する動画像情報処理装置と、
前記出力部が出力した前記推定情報を表示する表示装置とを備える
壁厚み推定システム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023505258A JPWO2022190821A1 (ja) | 2021-03-09 | 2022-02-18 | |
US18/271,977 US20240081767A1 (en) | 2021-03-09 | 2022-02-18 | Wall thickness estimation method, recording medium, wall thickness estimation device, and wall thickness estimation system |
CN202280006359.2A CN116171130A (zh) | 2021-03-09 | 2022-02-18 | 壁厚度推测方法、计算机程序、壁厚度推测装置、以及壁厚度推测系统 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021036850 | 2021-03-09 | ||
JP2021-036850 | 2021-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022190821A1 true WO2022190821A1 (ja) | 2022-09-15 |
Family
ID=83227701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/006662 WO2022190821A1 (ja) | 2021-03-09 | 2022-02-18 | 壁厚み推定方法、コンピュータプログラム、壁厚み推定装置及び壁厚み推定システム |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240081767A1 (ja) |
JP (1) | JPWO2022190821A1 (ja) |
CN (1) | CN116171130A (ja) |
WO (1) | WO2022190821A1 (ja) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190087957A1 (en) * | 2017-09-21 | 2019-03-21 | The Regents Of The University Of Michigan | Techniques of deformation analysis for quantification of vascular enlargement |
-
2022
- 2022-02-18 JP JP2023505258A patent/JPWO2022190821A1/ja active Pending
- 2022-02-18 CN CN202280006359.2A patent/CN116171130A/zh active Pending
- 2022-02-18 WO PCT/JP2022/006662 patent/WO2022190821A1/ja active Application Filing
- 2022-02-18 US US18/271,977 patent/US20240081767A1/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190087957A1 (en) * | 2017-09-21 | 2019-03-21 | The Regents Of The University Of Michigan | Techniques of deformation analysis for quantification of vascular enlargement |
Also Published As
Publication number | Publication date |
---|---|
JPWO2022190821A1 (ja) | 2022-09-15 |
CN116171130A (zh) | 2023-05-26 |
US20240081767A1 (en) | 2024-03-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI828701B (zh) | 用於肺體積閘控x射線成像系統和方法,及非暫態電腦可讀取儲存媒介 | |
US10169542B2 (en) | Systems and methods for automatically determining myocardial bridging and patient impact | |
EP3277169B1 (en) | Systems and methods for estimating virtual perfusion images | |
US20170071479A1 (en) | Image processing apparatus, image processing method, and storage medium | |
KR20150118484A (ko) | 의료 영상 정합 방법 및 장치 | |
JP2016520357A (ja) | 狭窄治療計画 | |
US20220051401A1 (en) | Providing a scene with synthetic contrast | |
CN108320279A (zh) | 用于诊断患者状况的成像系统 | |
JP7152077B2 (ja) | 血管壁厚み推定方法、血管壁厚み推定装置及び血管壁厚み推定システム | |
US20100030572A1 (en) | Temporal registration of medical data | |
WO2022190821A1 (ja) | 壁厚み推定方法、コンピュータプログラム、壁厚み推定装置及び壁厚み推定システム | |
WO2023021671A1 (ja) | 壁厚み推定方法、壁厚み推定装置及び壁厚み推定システム | |
JP7381081B2 (ja) | 壁厚み推定方法、壁厚み推定装置及び壁厚み推定システム | |
WO2023058759A1 (ja) | 壁厚み推定方法、コンピュータプログラム、学習方法、模型作製方法、壁厚み推定装置及び壁厚み推定システム | |
US20240104728A1 (en) | Providing a result dataset | |
JP7292191B2 (ja) | 医用画像処理装置、医用画像処理方法、および医用画像処理プログラム | |
Chen | Towards practical ultrasound ai across real-world patient diversity | |
US20220084206A1 (en) | Information processing apparatus, information processing method, and non-transitory storage medium | |
JP2022171345A (ja) | 医用画像処理装置、医用画像処理方法及びプログラム | |
WO2020013198A1 (ja) | 画像診断支援装置、方法及びプログラム、並びに心臓シミュレーションシステム | |
Santhanam et al. | A Framework for Modeling and Visualizing Cardiovascular Deformation Under Normal and Altered Circulatory Conditions. | |
CN116612241A (zh) | 三维重建方法、装置、设备及存储介质 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22766784 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18271977 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023505258 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22766784 Country of ref document: EP Kind code of ref document: A1 |