Method and system for determining time-based index for blood circulation from angiographic imaging data

a technology of angiographic imaging and time-based index, which is applied in the field of image data processing methods and systems, can solve the problems of complicated processing procedures and invasive measurement techniques

Inactive Publication Date: 2014-03-27
TOSHIBA MEDICAL SYST CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, this measurement technique is an invasive procedure as the pressure wire needs to be inserted into the coronary artery across stenosis and bear

Method used

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  • Method and system for determining time-based index for blood circulation from angiographic imaging data
  • Method and system for determining time-based index for blood circulation from angiographic imaging data
  • Method and system for determining time-based index for blood circulation from angiographic imaging data

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first embodiment

[0029]Referring now to the drawings, wherein like reference numerals designate corresponding structures throughout the views, and now referring to FIG. 1, a diagram illustrates one embodiment of the X-ray cardiovascular diagnostic apparatus for evaluating blood circulation in a blood vessel according to the current invention. The X-ray diagnostic apparatus includes a high-voltage generator 11, an X-ray tube 12, an X-ray beam limiting device 13, a top plate 14, a C-shaped arm 15, an X-ray detector 16, a C-shaped arm rotating and moving mechanism 17, a top plate moving mechanism 18, a C-shaped-arm and top-plate mechanism controlling unit 19, a beam-limiting controlling unit 20, a system controlling unit 21, an input unit 22, a display unit 23, an image generating unit 24, an image storage unit 25, and an image processing unit 26. In a certain embodiment, a user interface unit 34 includes the input unit 22, the display unit 23 and a certain portion of the system controlling unit 21. Fu...

second embodiment

[0073]Now referring to FIG. 8, a diagram illustrates the blood circulation determination device 117 according to the current invention. In general, one embodiment of the blood circulation determination device 117B advantageously determines a predetermined time-based fractional flow reserve (FFR) based upon the angiographic image data that is acquired by a myocardial perfusion imaging apparatus. The blood circulation determination device 117B further includes a perfusion image data initial processing unit 1001, a time-density curves (TDC) generation unit 1101, a TDC index generation unit 1201 and a time-based fractional flow reserve (FFR) generation outputting unit 1301. The following description is illustrated that one embodiment of the blood circulation determination device 117B determines a FFR based upon the angiographic image data of coronary arteries and supported myocardium.

[0074]In general, a data set of myocardial perfusion images is a time sequence of images of heart blood ...

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Abstract

A predetermined time-based index ratio such as time-based fractional flow reserve (FFR) is determined for evaluating a level of blood circulation between at least two locations such as a proximal location and a distal location in a selected blood vessel in the region of interest. One time-based FFR is obtained by normalizing a risk artery ratio by a reference artery ratio.

Description

FIELD OF THE INVENTION[0001]The current invention is generally related to an image data processing method and system, and more particularly related to a method or a system for determining a time-based index for blood circulation from imaging data.BACKGROUND OF THE INVENTION[0002]Relevant prior art has attempted to develop various methods to quantify an extent of blockage of blood circulation. For example, the blockage is often seen as stenosis in a coronary artery, and the extent of blockage is quantified by a predetermined parameter or index. One such widely used index is fractional flow reserve (FFR) for indicating a physiologic significance of coronary artery stenosis.[0003]One area of the prior art attempts has used directly measured pressured data to determine a blockage parameter in a certain blood vessel. By inserting an intracoronary pressure guide wire into a guiding catheter that was introduced to the aorta, the distal coronary pressure and the aortic pressure are measured...

Claims

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Application Information

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IPC IPC(8): G06K9/46
CPCG06T7/0016G06T2207/10016G06T2207/10116G06T2207/20104G06T2207/30104A61B6/032A61B6/541A61B6/022A61B6/486A61B6/4441A61B6/504A61B6/40A61B6/42A61B6/461A61B6/469A61B6/5205A61B6/5217
Inventor YAO, JINGWUSAKAGUCHI, TAKUYATROST, JEFFGEORGE, RICHARD T.LIMA, JOAO A.C.YOUSUF, OMAIR
Owner TOSHIBA MEDICAL SYST CORP
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