Introduction: Myocardial perfusion SPECTby 99mTc-Sestamibi and 99mTc-Tetrofosmin radiopharmaceuticals usually presents a false significant increase in the radiotracer uptake in the inferior myocardium due to the uptake in organs such as liver, bowel, stomach and biliary system. The present study evaluated a suitable Slit angle for differentiating extra-cardiac activities by Slit Slat collimation. Methods: The Siemens E.CAM gamma camera equipped with a Low Energy High Resolution (LEHR) collimator was simulated with the Simulating Medical Imaging Nuclear Detectors (SIMIND) Monte Carlo program. Following the verification of the simulation, a Slit Slat collimator was simulated for SPECT imaging of a NURBS-based Cardiac Torso (NCAT) phantom with different Slit angels ranged from 0 to 30 degrees. The reconstructed images were qualitatively assessed with blinded observer method by three nuclear medicine specialists. Results:The improved differentiation of the bowel activity from the cardiac was obtained by a Slit-Slat collimator with the Slit angle of 7 degree. While for gastric activity differentiation an angle of 15 degree for the Slit was useful. Conclusion: The results showed that Slit Slat collimation with 7 and 15 Slit angle provide a suitable differentiation of the bowel and gastric activities from the cardia, respectively.
کلید واژگان :myocardium NCAT SPECT, Slit Slat collimator SIMIND Monte Carlo
ارزش ریالی : 600000 ریال
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جزئیات مقاله
- کد شناسه : 2157761266561676
- سال انتشار : 2018
- نوع مقاله : پذیرفته شده در مجلات Scopus ,ISI, با IF=0
- زبان : انگلیسی
- محل پذیرش : Iranian Journal of Nuclear Medicine
- برگزار کنندگان :
- ISSN : 1681-2824, 2008-2509
- تاریخ ثبت : 1398/10/08 13:14:25
- ثبت کننده : جلیل پیرایش اسلامیان
- تعداد بازدید : 235
- تعداد فروش : 0