Positron Emission Tomography(PET) is a filming technique of biochemical changes within a human body. The Standardized Uptake Value(SUV) is most generally used to discern tumors. However, SUV may be influenced by various factors, such as the inspection time, the tube voltage, the tube current, and th...
Positron Emission Tomography(PET) is a filming technique of biochemical changes within a human body. The Standardized Uptake Value(SUV) is most generally used to discern tumors. However, SUV may be influenced by various factors, such as the inspection time, the tube voltage, the tube current, and the kind and density of materials inside a human body. In this study, the dependency of SUV on these factors is investigated. 1. SUV remained almost constant regardless of the inspection time. 2. SUV did not show noticeable changes with the variation of the tube current from 30 mAs to 120 mAs and the tube voltages of 90 kVp, 120 kVp, and 140 kVp. 3. SUV for materials resulted in 1.8 for stainless, 1.4 for stent, 2.4 for iodine contrast medium, 2.6 for Barium Sulfate, 1.6 for Gypsum, and 1.4 for paraffin respectively. The distortion of image was remarkable for the iodine contrast medium and Barium Sulfate. 4. For the density of barium sulfate of 1% ~ 7%, SUV remained stable around 0.8 ~1.0, however from density over 8%, it increased up to around 1.4 ~ 1.6. In the case of the iodine contrast medium, for the density between 1% ~ 9%, it was almost constant between 0.7 ~ 1.0 but for the density over 10%, it increased to around 1.1 ~ 1.5. For the barium sulfate, the higher the density, the larger the distortion of the images. 5. SUV to the variation of the tube voltage with respect to the density of the contrast medium showed the similar result as the result 4. That is to say, the density did not affect the effect of the tube voltage on SUV.
Positron Emission Tomography(PET) is a filming technique of biochemical changes within a human body. The Standardized Uptake Value(SUV) is most generally used to discern tumors. However, SUV may be influenced by various factors, such as the inspection time, the tube voltage, the tube current, and the kind and density of materials inside a human body. In this study, the dependency of SUV on these factors is investigated. 1. SUV remained almost constant regardless of the inspection time. 2. SUV did not show noticeable changes with the variation of the tube current from 30 mAs to 120 mAs and the tube voltages of 90 kVp, 120 kVp, and 140 kVp. 3. SUV for materials resulted in 1.8 for stainless, 1.4 for stent, 2.4 for iodine contrast medium, 2.6 for Barium Sulfate, 1.6 for Gypsum, and 1.4 for paraffin respectively. The distortion of image was remarkable for the iodine contrast medium and Barium Sulfate. 4. For the density of barium sulfate of 1% ~ 7%, SUV remained stable around 0.8 ~1.0, however from density over 8%, it increased up to around 1.4 ~ 1.6. In the case of the iodine contrast medium, for the density between 1% ~ 9%, it was almost constant between 0.7 ~ 1.0 but for the density over 10%, it increased to around 1.1 ~ 1.5. For the barium sulfate, the higher the density, the larger the distortion of the images. 5. SUV to the variation of the tube voltage with respect to the density of the contrast medium showed the similar result as the result 4. That is to say, the density did not affect the effect of the tube voltage on SUV.
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#PET/CT Standardized Uptake Value
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