X-ray computer tomography apparatus

A photography device, X-ray technology, applied in X-ray equipment, echo tomography, measurement devices, etc., can solve the problem of inappropriate scanning speed

Inactive Publication Date: 2006-06-07
TOSHIBA MEDICAL SYST CORP
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in some cases, the scan speed in the main scan is inappropriate relative to the actual heart rate

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
  • X-ray computer tomography apparatus
  • X-ray computer tomography apparatus
  • X-ray computer tomography apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] An X-ray computed tomography apparatus according to a preferred embodiment of the present invention will be described below with reference to the views of the accompanying drawings. Note that X-ray computed tomography devices include various types of devices, for example, rotary / rotary type devices in which the X-ray tube and X-ray detector rotate together around the object to be inspected; stationary / rotary Type of device in which a number of detection elements are arranged in a ring and only the x-ray tube rotates around the object to be inspected. The invention can be applied to either type. In this example, the current mainstream type - rotation / rotation type - will be taken as an example for illustration.

[0033] In addition, image reconstruction methods include a 360° method that requires 360° projection data corresponding to one rotation around an object to be inspected, and a half-scan method that requires (180°+fan angle) projection data. The present inventi...

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

The X-ray computed tomography apparatus of the present invention has a function of monitoring the concentration of a contrast agent in an ROI of a subject by a pre-scan, stopping the pre-scan according to the time when the concentration reaches a predetermined value, and starting a main scan. The main scan conditions are initially set based on the physiological phenomena of the subject measured prior to injection of the contrast medium. Whether it is necessary to reset the originally set main scan conditions is judged based on the changes in the physiological phenomena measured before the end of the pre-scan. If it is determined that the main scan condition needs to be reset, the main scan condition is reset from the initially set main scan condition to the main scan condition corresponding to the physiological phenomenon measured before the end of the pre-scan.

Description

[0001] The present invention is a divisional application with the application number 03106478.7 and the title of the invention "X-ray computer tomography device". [0002] Cross References to Related Applications [0003] This application is based on and claims priority from Japanese Application Patent No. 2002-051878 filed on February 27, 2002, the entire contents of which are incorporated herein by reference. technical field [0004] The present invention relates to an X-ray computed tomography apparatus having a function of performing a pre-scan before performing a main scan. Background technique [0005] In contrast-medium imaging, it is very important to start scanning (main scanning) when a contrast medium injected into an object to be inspected flows into a relevant area. Therefore, a scan (pre-scan) is performed before the main scan. In order to suppress the X-ray dose, the pre-scan is performed by using X-rays weaker in intensity than the X-rays used in the main s...

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 Applications(China)
IPC IPC(8): A61B6/03A61B5/352A61B6/00G01N23/00
CPCA61B6/032A61B6/465A61B6/481A61B6/488A61B6/504A61B6/541A61B6/027Y10S378/901A61B5/352
Inventor 尾嵜真浩
Owner TOSHIBA MEDICAL SYST CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap