PET/CT scannerGeneral technique |
Siemens Biograph LSO, Erlangen, GermanyImaging performed 6 h post-90Y injection; patient positioned supine with arms elevated; PET acquired in one bed position centred over the liver for 40 min |
PET gantry information |
Detector material: lutetium oxyorthosilicate; crystal dimension 6.45×6.45×25 mm; crystals per detector block 64; 144 detector blocks; 4 photomultiplier tubes per block; detector ring diameter 824 mm; 384 detectors per ring; 24 detector rings; total 9216 detectors |
PET reconstruction parameters |
PET matrix 128×128×47; attenuation weighted ordered subsets expectation maximisation iterative reconstruction; two iterations and eight subsets |
CT parameters |
Single-slice CT; 120 kVp; 90 mAs; field of view 50 cm; slice interval 3 mm |