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| Comparison of SUV between TrueX and OSEM in oncological patients |
| ZHANG Hui-wei, ZHAO Jun, ZUO Chuan-tao, HUA Feng-chun, HUANG Zhe-min, GUAN Yi-hui |
| PET Center, Huashan Hospital, Fudan University, Shanghai 200235, China |
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Abstract Objective: To evaluate standardized uptake value(SUV) in both TrueX and OSEM. Methods: ①NEMA IEC Body Phantom experiment. ②Clinical study: 40 oncological patients were reconstructed by TrueX and OSEM. SUV and volume of 10～15 lesions in every patient were measured by TrueD software. Results: There was no significant difference of SUVmax(t=-0.145, P>0.05) and SUVavg(t=-0.141, P>0.05) between TrueX and OSEM according to both phantom experiment and clinical study. SUVmax of 65% lesions measured by TruxX was less than that by OSEM. There was significant difference of SUVmax when VOI50% was below 1cm3 or when SUVmax was above 15. Conclusion: There was significant difference of SUVavg and SUVmax between TrueX and OSEM in small lesions and lesions with high SUV. The results revealed that it is important to keep the same reconstruction method in follow up for response criteria.
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Received: 24 July 2009
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2010, Vol. 21 
