18F-FDG PET/MR Imaging with Non-contrast MRI in Patients with Gastric cancer

Conclusions: PET/MR with the T2W-HASTE was better at revealing the details of local stomach lesions compared with PET/CT imaging. Combining the PET/MR with the T2W-HASTE technique is a promising imaging method for diagnosing and staging gastric cancer. Table1 MRI ParametersT2W-HASTET2W-BLADEDWIT1-VIBE-dixonTR(ms)2680300086004.04TE(ms)83119721.24/2.47Slice thickness(mm)3253Slice gap(mm)0.60.410.6FOV(mm)236×320380×380270×360270×360Matrix378×512320×32082×110188×320Flip angle(°)14080-12Bandwidth61050519761040NEX1-31Table2 The inter observer agreement between two readers (Kappa value)PETCTPETMR-T1WPETMR-T2W-HASTEEPETMR-T2W-BLADEimage artifacts0.6510.93310.912conspicuity0.7670.7850.8910.865conspicuity0.9180.9310.868-Table3 Comparison of image artifacts and lesion conspicuity between two T2W sequencesMR sequenceimage artifactslesion conspicuityT2WI-HASTE2(2,2)3(2,3)T2WI-BLADE2(1,2)2(1,3)Z-3.249-2.502P0.000.012Table4Comparison of image artifacts, lesion conspicuity and image fusion quality in three modalitiesModalityimage artifactsimage fusionlesion conspicuityPET/CT3(3,3)3(2,3)2(2,2)PET/MRT13(2,3)3(2,3)2(2,3)PET/MRT22(2,2)2(2,3)3(2,3)239.019.27514.696P0.000.0550.023
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Total body PET, dedicated PET and dynamic PET (Data Analysis & amp; Management) Source Type: research