TY - JOUR
T1 - Use of a diagnostic positron emission tomography-computed tomography system for planning radiotherapy positioning
T2 - Distortion of the tabletop
AU - Kishida, Yoshiomi
AU - Ikushima, Hitoshi
AU - Sasaki, Motoharu
AU - Hara, Yasuo
AU - Oita, Masataka
AU - Nishitani, Hiromu
PY - 2010/2
Y1 - 2010/2
N2 - Purpose: The aim of this study was to evaluate distortion of the tabletop in a diagnostic positron emission tomography-computed tomography (PET-CT) system to determine its suitability for planning radiotherapy positioning. Materials and methods: Distortion of the tabletop was compared among PET-CT, lineac CT, and CT simulator systems. A phantom or angiography catheter was fixed to the tabletop and imaged after iron plate weight loading. The acquired images were analyzed using radiotherapy planning software. Distortion of the tabletop was measured based on the displayed coordinates. Results: Sinking represented the greatest distortion of the tabletop in all systems. Using the same baseline, the maximum sinking were -0.4, -0.2, and +0.4 cm, respectively. The distortion of the tabletop in the PET-CT system was more similar to that in the lineac CT than in the CT simulator system. Conclusion: Distortion of the tabletop in a diagnostic PET-CT system may be within the acceptable range to allow its use for planning radiotherapy positioning.
AB - Purpose: The aim of this study was to evaluate distortion of the tabletop in a diagnostic positron emission tomography-computed tomography (PET-CT) system to determine its suitability for planning radiotherapy positioning. Materials and methods: Distortion of the tabletop was compared among PET-CT, lineac CT, and CT simulator systems. A phantom or angiography catheter was fixed to the tabletop and imaged after iron plate weight loading. The acquired images were analyzed using radiotherapy planning software. Distortion of the tabletop was measured based on the displayed coordinates. Results: Sinking represented the greatest distortion of the tabletop in all systems. Using the same baseline, the maximum sinking were -0.4, -0.2, and +0.4 cm, respectively. The distortion of the tabletop in the PET-CT system was more similar to that in the lineac CT than in the CT simulator system. Conclusion: Distortion of the tabletop in a diagnostic PET-CT system may be within the acceptable range to allow its use for planning radiotherapy positioning.
KW - Distortion of tabletop
KW - PET-CT
KW - Planning radiotherapy positioning
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U2 - 10.1007/s11604-009-0398-0
DO - 10.1007/s11604-009-0398-0
M3 - Article
C2 - 20182849
AN - SCOPUS:77649206828
SN - 1867-1071
VL - 28
SP - 143
EP - 148
JO - Japanese Journal of Radiology
JF - Japanese Journal of Radiology
IS - 2
ER -