DocumentCode :
63525
Title :
Imaging Characteristics of ^{124} I Between 3D and 2D on Siemens ECAT HR {+} PET Scanner
Author :
Young Sub Lee ; Jin Su Kim ; Hee-Joung Kim ; Sang-Keun Woo ; Jong Guk Kim ; Ji Ae Park ; Chang Woon Choi ; Sang Moo Lim ; Kyeong Min Kim
Author_Institution :
Korea Inst. Radiol. & Sci., Seoul, South Korea
Volume :
60
Issue :
2
fYear :
2013
fDate :
Apr-13
Firstpage :
797
Lastpage :
801
Abstract :
124I has a complex decay scheme with high gamma energy and low positron abundance. In this study, comparative performance measurements of 124I were performed in terms of spatial resolution, sensitivity, and image quality. All measurements were performed using both 2D and 3D PET in both brain mode and whole body mode. The transverse and axial spatial resolutions at 1 cm were 5.56 and 6.07 mm for 124I, and were 4.58 and 4.77 mm and for 18F, respectively. Sensitivities were 0.5 kcps/MBq (2D) and 3.4 kcps/MBq (3D) for 124I, and 1.8 kcps/MBq (2D) and 9.8 kcps/MBq (3D) for 18F. The %contrast of 3D was higher than that of 2D in 124I. For 124I PET imaging, 3D acquisition with brain mode was highest achievable imaging acquisition mode with finer spatial resolution and higher contrast. This result will be useful for 124I PET imaging.
Keywords :
brain; image resolution; medical image processing; positron emission tomography; 2D PET; 3D PET; 124I PET imaging; 18F; Siemens ECAT HR+PET scanner; axial spatial resolution; brain mode; complex decay scheme; high gamma energy; image quality; imaging acquisition mode; imaging characteristics; low positron abundance; performance measurements; spatial resolution; transverse spatial resolution; whole body mode; Image quality; Photonics; Positron emission tomography; Positrons; Sensitivity; Spatial resolution; Image quality; reconstruction algorithms; spatial resolution; whole-body PET;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2013.2240012
Filename :
6466408
Link To Document :
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