18F- FDG was manually injected 45– 60 minutes before examination . This time of uptake phase is necessary for the 18F-FDG to be adequately bio-distributed in the body and picked up by the cells. Patients were informed to rest in a quiet isolated room, with complete physical and mental rest .
The patients were examined in a supine position and comfortable head fixation with arms up. Contrast enhanced CT scan was performed first from base of the skull to mid thigh , then a Torso PET examination . The whole study took approximately 20-30 minutes.
The contrast enhanced CT examination was performed following injection of 1-2 mL/ kg of a low-osmolarity iodinated contrast medium (ultravist) at a rate of 4 ml /sec by using a automatic injector, …show more content…
One case developed minor reaction to contrast and was controlled by I.V corticosteroid.
For a Torso whole body PET/CT study (neck, chest, abdomen, and pelvis), scanning began at the level of the skull base and extended caudally to the level of the mid-thighs. Dedicated brain PET and real whole body PET/CT that extend from vault of skull to foot were not indicated to any case at this study depending on clinical base and patients' previous imaging.
PET was performed following the CT study without moving the patient. Approximately 5 to 7 bed positions are planned in the 3-dimensional acquisition mode for scanning the same area with 2-3 minutes acquisition at each bed position there is overlap between beds positions PET/CT scan in caudo-cranial direction.
Helical PET and CT images were first reconstructed followed by reformatting of both sagittal and coronal images that allowed better viewing . For each of these sets of PET and CT images, matching “fusion” images were generated by combining the 2 types of data.
The acquisition time for an integrated PET/ CT scan was approximately 15-25 minutes. The co-registered images were displayed using special software and reviewed on the dedicated workstation. 3.4. Image
The patients were examined in a supine position and comfortable head fixation with arms up. Contrast enhanced CT scan was performed first from base of the skull to mid thigh , then a Torso PET examination . The whole study took approximately 20-30 minutes.
The contrast enhanced CT examination was performed following injection of 1-2 mL/ kg of a low-osmolarity iodinated contrast medium (ultravist) at a rate of 4 ml /sec by using a automatic injector, …show more content…
One case developed minor reaction to contrast and was controlled by I.V corticosteroid.
For a Torso whole body PET/CT study (neck, chest, abdomen, and pelvis), scanning began at the level of the skull base and extended caudally to the level of the mid-thighs. Dedicated brain PET and real whole body PET/CT that extend from vault of skull to foot were not indicated to any case at this study depending on clinical base and patients' previous imaging.
PET was performed following the CT study without moving the patient. Approximately 5 to 7 bed positions are planned in the 3-dimensional acquisition mode for scanning the same area with 2-3 minutes acquisition at each bed position there is overlap between beds positions PET/CT scan in caudo-cranial direction.
Helical PET and CT images were first reconstructed followed by reformatting of both sagittal and coronal images that allowed better viewing . For each of these sets of PET and CT images, matching “fusion” images were generated by combining the 2 types of data.
The acquisition time for an integrated PET/ CT scan was approximately 15-25 minutes. The co-registered images were displayed using special software and reviewed on the dedicated workstation. 3.4. Image