نتایج جستجو برای: partial volume effect

تعداد نتایج: 2103220  

Journal: :iranian journal of nuclear medicine 0
mpumelelo nyathi department of medical physics, faculty of health sciences, smu, pretoria, south africa enoch sithole department of physics, faculty of pre-clinical sciences, smu, pretoria, south africa ouma ramafi department of nuclear medicine, dr. george mukhari academic hospital, pretoria, south africa

introduction: the limited resolution of the imaging system causes partial volume effects (pves). these results in spreading of image counts to the neighboring pixels. this phenomenon is called spill-out effect. this study aimed at quantifying pves using imagej. methods:technetium-99m solution of concentration of 74 kbq/ml was filled into spheres a, b and c of diameters: 26 mm, 20 mm and 16 mm r...

Journal: :Open Journal of Medical Imaging 2017

Journal: :Japanese Journal of Radiological Technology 1995

Journal: :Japanese Journal of Radiological Technology 1997

Journal: :Journal of Nuclear Medicine 2007

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2007
Marine Soret Stephen L Bacharach Irène Buvat

PET has the invaluable advantage of being intrinsically quantitative, enabling accurate measurements of tracer concentrations in vivo. In PET tumor imaging, indices characterizing tumor uptake, such as standardized uptake values, are becoming increasingly important, especially in the context of monitoring the response to therapy. However, when tracer uptake in small tumors is measured, large bi...

Journal: :iranian journal of nuclear medicine 2012
pablo aguiar charalampos tsoumpas albert cot javier pavía domènec ros

introduction: the key characteristics of positron emission tomography (pet) are its quantitative capability and its sensitivity, which allow the in vivo imaging of biochemical interactions with small amounts of tracer concentrations. therefore, accurate quantification is important. however, it can be sensitive to several physical factors. the aim of this investigation is the assessment of the e...

Journal: :Japanese Journal of Radiological Technology 1996

Journal: :Japanese Journal of Radiological Technology 1998

Introduction: The key characteristics of positron emission tomography (PET) are its quantitative capability and its sensitivity, which allow the in vivo imaging of biochemical interactions with small amounts of tracer concentrations. Therefore, accurate quantification is important. However, it can be sensitive to several physical factors. The aim of this investigation is the assessment of the e...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید