40 x 30 cm flat panel imager for angiography, R&F, and cone-beam CT applications

被引：28

作者：

Colbeth, RE ^{[1
]}

Boyce, S ^{[1
]}

Fong, R ^{[1
]}

Gray, K ^{[1
]}

Harris, R ^{[1
]}

Job, ID ^{[1
]}

Mollov, I ^{[1
]}

Nepo, B ^{[1
]}

Pavkovich, J ^{[1
]}

Taie-Nobarie, N ^{[1
]}

Seppi, EJ ^{[1
]}

Shapiro, EG ^{[1
]}

Wright, MD ^{[1
]}

Webb, C ^{[1
]}

Yu, JAM ^{[1
]}

机构：

[1] Varian Med Syst, Mountain View, CA 94043 USA

来源：

MEDICAL IMAGING 2001: PHYSICS OF MEDICAL IMAGING | 2001年 / 4320卷

关键词：

x-ray; imaging; flat panel; sensor; fluoroscopy; radiography; amorphous silicon; cone-beam CT;

D O I：

10.1117/12.430917

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Preliminary results are presented from the PaxScan 4030A; a 40x30cm, 2048 x 1536 landscape, flat panel imager, with 194um pixel pitch. This imager builds on our experience with the PaxScan 2520, a 127um real-time flat panel detector capable of both high-resolution radiography and low dose fluoroscopy. While the PS2520 has been applied in C-arms, neuroangiography, cardiac imaging and small area radiographic units, the larger active area of the PaxScan 4030A addresses the broader applications of angiography, general R&F and cone-beam CT. The PaxScan 4030A has the same electrical and software interfaces as the PS2520; however, a number of innovations have been incorporated into the 4030A to increase its versatility. The most obvious change is that the data interface between the receptor and command processor has been reduced to one very flexible and thin fiber-optic cable. A second new feature for the 4030A is the use of split datalines. Split datalines facilitate scanning the two halves of the array in parallel, cutting the readout time in half and increasing the time window for pulsed x-ray delivery to 15ms at 30fps. In addition, split datalines result in lower noise, which, coupled with the larger signal of the 194um pixels, enables high quality imaging at lower fluoroscopy doses rates.

引用

页码：94 / 102

页数：9

共 12 条

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