Unlock instant, AI-driven research and patent intelligence for your innovation.

Radiation tomography device

一种断层摄影、放射线的技术，应用在用于放射诊断的仪器、测量装置、诊断等方向，能够解决放射线吸收特性不均匀等问题

Active Publication Date: 2021-08-31
SHIMADZU SEISAKUSHO CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when an image of the distribution of radiopharmaceuticals is intended to be generated, the radiation absorption characteristics in the subject become non-uniform and superimposed on the image

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Radiation tomography device
  • Radiation tomography device
  • Radiation tomography device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] figure 1 It is a functional block diagram of the radiation tomography apparatus according to the present invention. That is, the apparatus according to the present invention includes a detector ring 12 into which the head of a subject to which a positron emission type radiopharmaceutical is administered is introduced, and various units 21 , 22 , 23 , 24 , and 25 related to information processing. The detector ring 12 is an annular structure having a vertical central axis, and is configured to detect annihilation radiation pairs generated by radiopharmaceuticals distributed on the subject's head. In addition, in this specification, each part related to information processing is collectively called an information processing apparatus.

[0065] The structure of the detector ring 12 will be described. Regarding the detector ring 12, for example, ten radiation detectors 1 are arranged in a virtual circle on a plane perpendicular to the z direction (vertical direction), th...

Embodiment 2

[0104] Next, a radiation tomography apparatus according to Example 2 will be described. The radiation tomography apparatus involved in embodiment 2 is as Figure 18 Having the radiation source 13 inside the detector ring 12 as shown is very different from the structure of the first embodiment. In Embodiment 2, the contour extraction unit 23 is not necessarily required.

[0105] The radiation source 13 is a point line source enclosing radioactive cesium emitting radiation of 662 keV. The radiation source 13 is supported by a strut extending parallel to the central axis of the detector ring 12 , and the strut is connected to a radiation source moving mechanism 15 . Radiation source 13 utilizes radiation source moving mechanism 15 such as Figure 19 As shown, it is a structure that surrounds the circumference of the subject's head. The radiation source movement control unit 16 is configured to control the radiation source movement mechanism 15 . The radiation source 13 is co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

By simultaneously performing acquisition of transmission data and measurement of annihilation radiation pairs using a single detector ring, both reduction of manufacturing cost of the PET apparatus and reduction of the burden on the subject can be achieved. That is, transmission data representing the distribution of absorption characteristics of annihilation radiation in the subject is calculated from data on annihilation radiation pairs generated near the surface of the subject. According to the present invention, since transmission data can be obtained by detecting radiopharmaceuticals originating from the subject, it is not necessary to perform imaging exclusively for transmission data.

Description

technical field [0001] The present invention relates to a radiation tomography apparatus that detects an annihilation radiation pair radiated from a subject and images the distribution of radiopharmaceuticals in the subject, and more particularly, relates to a radiation tomography apparatus equipped with an absorption correction function. Background technique [0002] In medical institutions, a radiation tomography apparatus that images the distribution of radiopharmaceuticals is installed. A specific configuration of such a radiation tomography apparatus will be described. A conventional radiation tomography apparatus includes a detector ring in which radiation detectors for detecting radiation are arranged in an annular shape. This detector ring detects a pair of radiation (pair of annihilation radiation) irradiated from a radiopharmaceutical in a subject in opposite directions (for example, refer to Patent Document 1). [0003] As one type of such a radiation tomography...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/161
CPCG01T1/161G06T7/0012G06T5/50G06T2207/10104G06T2207/20224G06T2207/30101G06T2207/30016G06T5/70A61B6/4208A61B6/037G06T2207/10081G06T2207/30004
Inventor 津田伦明小林哲哉
Owner SHIMADZU SEISAKUSHO CO LTD