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
  • A61B6/44—Constructional features of apparatus for radiation diagnosis
  • A61B6/4405—Constructional features of apparatus for radiation diagnosis the apparatus being movable or portable, e.g. handheld or mounted on a trolley
• • 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
  • A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
• • 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
  • A61B6/44—Constructional features of apparatus for radiation diagnosis
  • A61B6/4411—Constructional features of apparatus for radiation diagnosis the apparatus being modular
• • 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
  • A61B6/44—Constructional features of apparatus for radiation diagnosis
  • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
  • A61B6/4452—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being able to move relative to each other
• • 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
  • A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
  • A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
  • A61B6/5241—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT combining overlapping images of the same imaging modality, e.g. by stitching
• • 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
  • A61B6/58—Testing, adjusting or calibrating thereof
  • A61B6/587—Alignment of source unit to detector unit
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
  • G06T7/00—Image analysis
  • G06T7/60—Analysis of geometric attributes
  • G06T7/62—Analysis of geometric attributes of area, perimeter, diameter or volume
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
  • G06V10/00—Arrangements for image or video recognition or understanding
  • G06V10/20—Image preprocessing
  • G06V10/25—Determination of region of interest [ROI] or a volume of interest [VOI]
• • G—PHYSICS
  • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
  • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
  • G16H30/00—ICT specially adapted for the handling or processing of medical images
  • G16H30/40—ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
• • 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
  • A61B6/46—Arrangements for interfacing with the operator or the patient
  • A61B6/467—Arrangements for interfacing with the operator or the patient characterised by special input means
  • A61B6/469—Arrangements for interfacing with the operator or the patient characterised by special input means for selecting a region of interest [ROI]

Definitions

• the present disclosure relates to an information processing device, a radiation irradiation device, an information processing method, and an information processing program.
• JP 2014-117368 A discloses guidance that enables imaging to be reproduced at present under the same imaging conditions and with the same positioning as in past imaging, based on optical images and imaging conditions of a subject at a past time.
• the present disclosure provides an information processing device, a radiation irradiation device, an information processing method, and an information processing program that can assist with positioning during radiography.
• a first aspect of the present disclosure is an information processing device that includes at least one processor, which acquires an optical image obtained by optically photographing a subject, identifies the position of a region of interest based on the optical image, and performs control to superimpose on the optical image a first marker indicating the center position of the radiation field when the subject is radiographed from approximately the same direction as the optical imaging direction, and a second marker indicating a predetermined position for the identified region of interest.
• the processor may receive an input regarding the type of region of interest of the subject to be imaged, and perform control to display on the display a second marker indicating a predetermined position according to the input type of region of interest, superimposed on the optical image.
• the processor may obtain an optical image obtained by optically photographing the subject and a radiation detector having a marker indicating the radiation detection area, and identify the position of the radiation detector in the optical image based on the marker included in the optical image.
• the processor may control the display to display, during the first period, an area of the representative optical image that corresponds to an area included in the radiation image.
• the processor may store the acquired optical image in a memory unit, acquire the radiation image from a radiation detector that detects radiation that has passed through the subject and generates a radiation image of the subject, and then erase the optical image stored in the memory unit.
• a second aspect of the present disclosure is a portable radiation irradiation device that includes the information processing device according to the first aspect, a radiation source that irradiates a subject with radiation, and an imaging device that optically images the subject.
• a third aspect of the present disclosure is an information processing method, which includes a process of acquiring an optical image obtained by optically photographing a subject, identifying the position of a region of interest based on the optical image, and controlling the display to superimpose on the optical image a first marker indicating the center position of the radiation field when the subject is radiographed from substantially the same direction as the optical photographing direction, and a second marker indicating a predetermined position for the identified region of interest.
• the fourth aspect of the present disclosure is an information processing program for causing a computer to execute a process of acquiring an optical image obtained by optically photographing a subject, identifying the position of a region of interest based on the optical image, and controlling the display to superimpose on the optical image a first marker indicating the center position of the radiation field and a second marker indicating a predetermined position for the identified region of interest when the subject is radiographed from substantially the same direction as the optical imaging direction.
• the cylindrical section 18 protruding from the front surface 11A of the device body 11 has an irradiation field limiter 26 and an irradiation window 28.
• the irradiation field limiter 26 is an irradiation field limiter that limits the irradiation range of the radiation R to a predetermined range, and is also called a collimator.
• the irradiation window 28 is made of a material that is transparent to the radiation R, and is a window member that separates the outside from the inside of the cylindrical section 18.
• the irradiation range of the radiation R emitted from the radiation tube 15 is defined by the irradiation field limiter 26, and the radiation R is further irradiated from the irradiation window towards the subject A.
• control unit 38C may acquire information indicating the irradiation period from the start to the end of irradiation of the subject A with radiation R from an imaging order or the like before capturing the representative optical image 80C (i.e., during the period T1).
• the control unit 38C may also instruct the imaging device (optical camera 47) for the representative optical image 80C to optically capture the subject A at a shutter speed corresponding to the irradiation period.
• the acquisition unit 38A may also acquire the representative optical image 80C obtained by optically capturing the subject A at a shutter speed corresponding to the irradiation period from the optical camera 47.
• the control unit 38C may therefore erase the optical image 80 and/or the representative optical image 80C stored in the storage 40 after acquiring the radiation image from the detector 16.
• the control unit 38C may also perform control to display on the display 22 a screen that prompts the user to select whether or not to erase the optical image 80 and/or the representative optical image 80C from the storage 40.
• the optical image 80 and/or the representative optical image 80C may be erased from the storage 40 only when an instruction to do so is given by the user.
• Examples of configuring multiple processing units with a single processor include, first, a form in which one processor is configured with a combination of one or more CPUs and software, as typified by client and server computers, and this processor functions as multiple processing units. Secondly, a form in which a processor is used to realize the functions of the entire system, including multiple processing units, with a single IC (Integrated Circuit) chip, as typified by system on chip (SoC). In this way, the various processing units are configured as a hardware structure using one or more of the various processors listed above.
• SoC system on chip
• the processor is the information processing device according to any one of Supplementary Note 1 to Supplementary Note 3, further comprising: a radiation detector that detects the radiation that has passed through the subject and generates a radiation image of the subject, and controls the display to display a third marker indicating a detection area of the radiation superimposed on the optical image.
• a radiation detector that detects the radiation that has passed through the subject and generates a radiation image of the subject, and controls the display to display a third marker indicating a detection area of the radiation superimposed on the optical image.
• the processor is acquiring distance information indicating a distance between a radiation source of the radiation and the radiation detector; Deriving a size of the detection area based on the distance information;
• the information processing device according to claim 4, further comprising: a control unit that controls the display unit to display the third marker on the display unit in such a manner that the third marker is superimposed on the optical image in accordance with the derived size of the detection area.
• the processor is acquiring information indicating an irradiation period from a start point to an end point of irradiation of the subject with the radiation; instructing an image capturing device of the representative optical image to optically capture the subject at a shutter speed corresponding to the irradiation period;
• the information processing device according to claim 9 or 10, further comprising: acquiring the representative optical image obtained by optically photographing the subject at a shutter speed corresponding to the irradiation period from the photographing device.
• ⁇ Appendix 12> The processor is The acquired optical image is stored in a storage unit.
• ⁇ Appendix 15> Acquiring an optical image by optically photographing the subject; Locating a region of interest based on the optical image;
• An information processing program for causing a computer to execute a process of controlling a display to superimpose a first marker indicating the center position of the radiation irradiation field and a second marker indicating a predetermined position for the identified region of interest on the optical image when the subject is radiographed from a direction substantially the same as the imaging direction of the optical imaging.

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• Health & Medical Sciences (AREA)
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• Life Sciences & Earth Sciences (AREA)
• Medical Informatics (AREA)
• Physics & Mathematics (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Radiology & Medical Imaging (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Heart & Thoracic Surgery (AREA)
• Molecular Biology (AREA)
• Veterinary Medicine (AREA)
• Animal Behavior & Ethology (AREA)
• Surgery (AREA)
• Biomedical Technology (AREA)
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• High Energy & Nuclear Physics (AREA)
• Optics & Photonics (AREA)
• General Physics & Mathematics (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Theoretical Computer Science (AREA)
• Epidemiology (AREA)
• Multimedia (AREA)
• Primary Health Care (AREA)
• Geometry (AREA)
• Apparatus For Radiation Diagnosis (AREA)

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Citations (9)

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• 2023
  • 2023-12-25 WO PCT/JP2023/046516 patent/WO2024143305A1/ja not_active Ceased
  • 2023-12-25 CN CN202380087709.7A patent/CN120390615A/zh active Pending
  • 2023-12-25 JP JP2024567824A patent/JPWO2024143305A1/ja active Pending
  • 2023-12-25 EP EP23912084.3A patent/EP4643781A4/en active Pending
• 2025
  • 2025-06-13 US US19/237,234 patent/US20250302418A1/en active Pending

Patent Citations (9)

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