A NEW APPROACH TO VERY HIGH-RESOLUTION MINI-BRAIN PET USING A SMALL NUMBER OF LARGE DETECTORS

被引:8
作者
CHO, ZH
JUH, SC
FRIEDENBERG, RM
BUNNEY, W
BUCHSBAUM, M
WONG, E
机构
[1] Department of Electrical Science, Korea Advanced Institute of Science, Seoul
[2] Department of Radiological Sciences, University of California, Irvine
[3] Department of Psychiatry and Human behavior, University of California, Irvine
[4] Department of Ophthalmology, University of California, Irvine
关键词
D O I
10.1109/23.106725
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
A new very high resolution Positron Emission Tomography using only a small number of large detectors in a circular ring format with collimating apertures is proposed and a design example is given. The proposed system is ideally suited for very high resolution brain imaging i.e. close to 2 mm fwhm resolution and can be converted to a medium resolution system by simply changing the size of collimating aperture if higher sensitivity operation is desired. The basic concept of the system design is the optimization of the detector size and system diameter. The former relates to the detection efficiency and photon spillage and penetration to adjacent crystals, while the latter (system diameter) relates to the overall system sensitivity. Since conventional sampling schemes are unlikely to satisfy the sampling requirements for such a system where only a small number of large detectors are arranged in a circular ring format, therefore, we have developed a Sequentially arranged Collimating Aperture Rotating-ring Detector (SCARD) scheme which allows us to sample the object space fine enough for image reconstruction. Copyright © 1990 by The Institute of Electrical and Electronics Engineers, Inc.
引用
收藏
页码:842 / 851
页数:10
相关论文
共 24 条
[1]   EMISSION COMPUTER-ASSISTED TOMOGRAPHY WITH SINGLE-PHOTON AND POSITRON-ANNIHILATION PHOTON EMITTERS [J].
BUDINGER, TF ;
DERENZO, SE ;
GULLBERG, GT ;
GREENBERG, WL ;
HUESMAN, RH .
JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY, 1977, 1 (01) :131-145
[2]   CYLINDRICAL PET DETECTOR DESIGN [J].
BURNHAM, CA ;
KAUFMAN, DE ;
CHESLER, DA ;
STEARNS, CW ;
WOLFSON, DR ;
BROWNELL, GL .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1988, 35 (01) :675-679
[3]   HIGH-RESOLUTION CIRCULAR RING POSITRON TOMOGRAPH WITH DICHOTOMIC SAMPLING - DICHOTOM-I [J].
CHO, ZH ;
HILAL, SK ;
RA, JB ;
HONG, KS ;
BIGLER, RE ;
YOSHIZUMI, T ;
WOLF, AP ;
FOWLER, JS .
PHYSICS IN MEDICINE AND BIOLOGY, 1983, 28 (11) :1219-1234
[4]   A NEW SAMPLING SCHEME FOR THE RING POSITRON CAMERA - DICHOTOMIC RING SAMPLING [J].
CHO, ZH ;
HONG, KS ;
RA, JB ;
LEE, SY ;
HILAL, SK ;
CORRELL, J .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1981, 28 (01) :94-98
[5]  
CHO ZH, 1975, J NUCL MED, V16, P1174
[6]  
CHO ZH, 1977, J NUCL MED, V18, P840
[7]   CIRCULAR RING TRANSVERSE AXIAL POSITRON CAMERA FOR 3-DIMENSIONAL RECONSTRUCTION OF RADIONUCLIDES DISTRIBUTION [J].
CHO, ZH ;
CHAN, JK ;
ERIKSSON, L .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1976, 23 (01) :613-622
[8]  
CHO ZH, 1989, Patent No. 7368
[9]  
DERENZO SE, 1988, IEEE T NUCL SCI, V35, P670
[10]  
ERRIKSSON L, 1988, IEEE T NUCL SCI, V34, P344