LIMITED-ANGLE 3D RECONSTRUCTION OF PET IMAGES FOR DOSE LOCALIZATION IN LIGHT-ION TUMOR-THERAPY

被引:11
作者
ENGHARDT, W [1 ]
FROMM, WD [1 ]
MANFRASS, P [1 ]
SCHARDT, D [1 ]
机构
[1] GESELL SCHWERIONENFORSCH GMBH,O-6100 DARMSTADT,GERMANY
关键词
D O I
10.1088/0031-9155/37/3/021
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
In vivo dose localization in light ion tumour therapy can be performed by measuring the range distributions of beta+ active ions in tissue employing positron emission tomographic techniques. For this purpose a multiplicative iteration scheme for reconstructing three-dimensional images from shift-variant, limited-angle data is presented. In the iterative correction steps the algorithm uses the geometric means of quotients calculated from the three-dimensional Radon transforms of the backprojected measured and approximated source distributions. When sources measured with poor statistics are reconstructed, an effective noise suppression is achieved.
引用
收藏
页码:791 / 798
页数:8
相关论文
共 10 条
[1]   AN ITERATIVE IMAGE SPACE RECONSTRUCTION ALGORITHM SUITABLE FOR VOLUME ECT [J].
DAUBEWITHERSPOON, ME ;
MUEHLLEHNER, G .
IEEE TRANSACTIONS ON MEDICAL IMAGING, 1986, 5 (02) :61-66
[2]  
ENGHARDT W, 1991, PHYSICA MED, V7, pN3
[3]  
GADEMANN G, 1990, STRAHLENTHER ONKOL, V166, P34
[4]  
GEISSEL H, 1990, 1989 P INT SCH SEM H, P32
[5]   THE HIGH-DENSITY AVALANCHE CHAMBER FOR POSITRON EMISSION TOMOGRAPHY [J].
JEAVONS, A ;
HOOD, K ;
HERLIN, G ;
PARKMAN, C ;
TOWNSEND, D ;
MAGNANINI, R ;
FREY, P ;
DONATH, A .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1983, 30 (01) :640-645
[6]  
Llacer J, 1984, IEEE Trans Med Imaging, V3, P80, DOI 10.1109/TMI.1984.4307660
[7]  
Llacer J., 1988, Nuclear Science Applications, Section A, V3, P111
[8]  
LUIG H, 1988, NUKLEARMEDIZINER, V27, P10
[9]   HIGH-DENSITY AVALANCHE CHAMBERS FOR POSITRON EMISSION TOMOGRAPHY [J].
MANFRASS, P ;
ENGHARDT, W ;
FROMM, WD ;
WOHLFARTH, D ;
HOHMUTH, K .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1988, 273 (2-3) :904-907
[10]  
SCHMIDLIN P, 1972, NUCLEAR-MED, V11, P1