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A NEW AUTOBC TECHNIQUE FOR C-ARM SYSTEM BASED ON DUAL-ENERGY X-RAY MATERIAL DISTINGUISH TECHNOLOGY

IP.com Disclosure Number: IPCOM000237712D
Publication Date: 2014-Jul-04
Document File: 9 page(s) / 248K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention includes a technique to automatically identify bone, soft-tissue and metal, among others by a C-arm in an X-ray system. The technique includes DXA in AutoBC to focus dynamic range on interested region to distinguish various materials to acquire better image quality in similar dose. DXA offers several features in the C-arm in the X-ray system. The features include setting sampling window for AutoBC or bLim or wLim focus on a surgeon interested region and optimizing image for better image quality. For low dose exposure, sampling window setting is performed at beginning of exposure or when object moves to utilize dual energy to distinguish interested region.

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A NEW AUTOBC TECHNIQUE FOR C-ARM SYSTEM BASED ON DUAL-ENERGY X-RAY MATERIAL DISTINGUISH TECHNOLOGY

FIELD OF INVENTION

The invention generally relates to an X-ray system and more particularly to a technique to acquire an efficient image quality with low dose exposure in the X-ray system.

BACKGROUND OF THE INVENTION

Good image quality with low dose exposure is important feature for a C-arm system. OEC software offers AutoBC and SmartMetal function for efficient image quality, even in low dose exposure. AutoBC searches useful gray value range, which include dynamic range, bLim and wLim for each frame of image. SmartMetal automatically adjusts the bLim to remove metal part for AutoBC. This presents efficient brightness or contrast, which is suitable for watching tissues rather than metal. SmartMetal bases on single energy gray pixel value to do this, so the segment window does not accurately focus on metal for thick bone tissue. Thick bone tissue includes ankle, which have similar gray pixel value in fluorography image. A surgeon is interested in different object in different surgery application, for instance, for orthopedic surgery, the surgeon is interested in bone tissue and for cardiac or vascular surgery, the surgeon is interested in soft-tissue or vessel. However, there is no conventional technique known in the art that finds the surgeon interested region in AutoBC to improve image quality in low dose exposure.

A conventional technique includes single or dual energy in C-arm to measure bone density. 

Another conventional technique includes real time dual energy x-ray image acquisition in two or three dimension.

However, the conventional techniques do not accurately focus on metal for thick bone tissue.

Hence there exists a need for an efficient technique to accurately find the surgeon interested region in AutoBC to improve image quality in low dose exposure.

BRIEF DESCRIPTION OF THE INVENTION

The invention includes a technique to automatically identify bone, soft-tissue and metal, among others by a C-arm in an X-ray system. The technique includes Dual-energy X-ray absorptiometry (DXA) with AutoBC in the C-arm to focus dynamic range on interested region to distinguish various materials to acquire better image quality in similar dose.

DETAILED DESCRIPTION OF THE INVENTION


The invention includes a technique to automatically identify bone, soft-tissue and metal, among others by a C-arm in an X-ray system. The technique includes dual-energy X-ray absorptiometry (DXA) in AutoBC to focus dynamic range on interested region to distinguish various materials to acquire better image quality in similar dose. DXA offers several features in the C-arm in the x-ray system. The features include setting sampling window for AutoBC or bLim or wLim focus on a surgeon interested region and optimizing image for better image quality. For low dose exposure, sampling window setting is performed at beginning of exposure or when object moves to utilize dual energy to...