TY - GEN
T1 - Reconstruction of dose distribution in in-beam PET for carbon therapy
AU - Kim, Kwangdon
AU - Bae, Seungbin
AU - Lee, Kisung
AU - Chung, Yonghyun
AU - An, Sujung
AU - Joung, Jinhun
PY - 2012
Y1 - 2012
N2 - There are two main artifacts in reconstructed images from in-beam positron emission tomography(PET). Unlike generic PET, in-beam PET uses the annihilation photons which occur during heavy ion therapy. Therefore, the geometry of in-beam PET is not a full ring, but a partial ring in order for the hardrons to arrive the tumor without penetration of detector blocks. The partial ring, however, causes truncation in projection data, due to an absence of detector modules in the openings. The other is ring artifact caused by the gaps between detector modules which can be also founded in generic PET. In this study, we aim to investigate the effect of gaps in reconstructed images and propose possible solutions to compensate the artifacts. We acquired the data by GATE v6.1 with initial ion energies 170, 290, 350AMeV of carbon beams. Each detector module consists of a 13 by 13 LYSO crystal array. The dimension of a crystal was 4mm * 4mm * 20 mm and the radius of inner circle of the gantry was 15cm.
AB - There are two main artifacts in reconstructed images from in-beam positron emission tomography(PET). Unlike generic PET, in-beam PET uses the annihilation photons which occur during heavy ion therapy. Therefore, the geometry of in-beam PET is not a full ring, but a partial ring in order for the hardrons to arrive the tumor without penetration of detector blocks. The partial ring, however, causes truncation in projection data, due to an absence of detector modules in the openings. The other is ring artifact caused by the gaps between detector modules which can be also founded in generic PET. In this study, we aim to investigate the effect of gaps in reconstructed images and propose possible solutions to compensate the artifacts. We acquired the data by GATE v6.1 with initial ion energies 170, 290, 350AMeV of carbon beams. Each detector module consists of a 13 by 13 LYSO crystal array. The dimension of a crystal was 4mm * 4mm * 20 mm and the radius of inner circle of the gantry was 15cm.
UR - http://www.scopus.com/inward/record.url?scp=84881576472&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881576472&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2012.6551553
DO - 10.1109/NSSMIC.2012.6551553
M3 - Conference contribution
AN - SCOPUS:84881576472
SN - 9781467320306
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 2433
EP - 2436
BT - 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
T2 - 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
Y2 - 29 October 2012 through 3 November 2012
ER -