CMOS DETECTOR READOUT ELECTRONICS FOR AN EMISSION-TRANSMISSION MEDICAL IMAGING-SYSTEM

被引：7

作者：

HEANUE, JA ^{[1
]}

BOSER, BE ^{[1
]}

机构：

[1] UNIV CALIF SAN FRANCISCO,DEPT RADIOL,SAN FRANCISCO,CA 94143

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1995年 / 42卷 / 04期

关键词：

D O I：

10.1109/23.467736

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have built a prototype medical imaging system in which transmission x-ray data provide anatomical information while emission radionuclide data yield physiological information. We have developed a CMOS integrated circuit for readout of the system's high-purity germanium detector. The circuit can be operated in three different modes. The first is a slow pulse-counting mode for detection of radionuclide events at 10(4) cps with 1-2 keV energy resolution. Next, there is a fast pulse-counting mode for simultaneous acquisition of emission and transmission data or for acquisition of dual-energy x-ray data at 10(6) cps with 5-7 keV energy resolution. Finally, current mode operation allows fast acquisition of x-ray transmission data. The circuit architecture includes a common preamplifier, selectable pulse shaping stages, and a common output buffer.

引用

页码：1133 / 1138

页数：6

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