کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
505923 864547 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of spatial resolution of a PET scanner through the simulation and experimental measurement of the recovery coefficient
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Evaluation of spatial resolution of a PET scanner through the simulation and experimental measurement of the recovery coefficient
چکیده انگلیسی

Purpose: In order to measure spatial resolution of a PET tomograph in clinical conditions, this study describes and validates a method based on the recovery coefficient, a factor required to compensate underestimation in measured radioactivity concentration for small structures.Methods: In a PET image, the recovery factors of radioactive spheres were measured and their comparison with simulated recovery coefficients yielded the tomographic spatial resolution. Following this methodology, resolution was determined in different surrounding media and several conditions for reconstruction, including clinical conditions for brain PET studies. All spatial resolution values were compared with those obtained using classical methods with point and line sources.Results: In each considered condition, spatial resolution of the PET image estimated using the recovery coefficient showed good agreement with classical methods measurements, validating the procedure.Conclusion: Measurement of the recovery coefficient provides an assessment of tomographic spatial resolution, particularly in clinical studies conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers in Biology and Medicine - Volume 40, Issue 1, January 2010, Pages 75–80
نویسندگان
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