A HIGH-RESOLUTION SPECT SYSTEM BASED ON A MICROCHANNEL-PLATE IMAGER

被引：15

作者：

DILMANIAN, FA

WEBER, DA

CODERRE, JA

JOEL, DD

SHI, KC

MEINKEN, GE

SOM, P

TANG, YN

VOLKOW, ND

YEE, C

BRILL, AB

WATANABE, M

INUZUKA, E

OBA, K

GERSON, R

IIDA, H

HIRUMA, A

机构：

[1] HAMAMATSU PHOTON KK,HAMAMATSU,JAPAN

[2] HAMAMATSU PHOTON SYST,BRIDGEWATER,NJ

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1990年 / 37卷 / 02期

关键词：

D O I：

10.1109/23.106699

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 developed a high-resolution single-photon emission-computed tomography (SPECT) system for small-animal studies with 125I. The SPECT camera uses a Hamamatsu microchannel-plate imager PIAS (Photon-Counting Image Acquisition System), a 0.7 mm thick NaI(Tl) plate, and a lead-glass parallel-hole collimator. The 15-mm diameter field-of-view (FOV) of the PIAS tube was enlarged by an optical fiber face-plate taper to provide a 26 mm camera FOV. Camera absolute sensitivity (counts detected/gamma photons emitted) is 2×10−5 for 125I. The system provides an in-plane resolution of about 0.7 mm FWHM in the reconstructed image for a 15-mm radius of rotation. SPECT images from phantom studies and from organs in the rat and mouse provide examples of the resolving capacity of the system. Copyright © 1990 by The Institute of Electrical and Electronics Engineers, Inc.

引用

页码：687 / 695

页数：9