High-resolution diffusion-weighted magnetic resonance imaging
acute hDWI-detected SCE
To explore the periprocedural incidence of SCE, 3.0-T scanner-based cerebral MRI (Magnetom Prisma, Siemens, Erlangen, Germany) was performed within 3 days before ablation and re-evaluated within 24–72 h after ablation. The imaging protocol for cerebral MRI consisted of a T2-weighted axial fluid-attenuated inversion recovery sequence and a diffusion-weighted magnetic resonance imaging (DWI) sequence. Apparent diffusion coefficient (ADC) maps were also generated for each DWI sequence. To precisely depict the periprocedural incidence of SCE, high-resolution cerebral magnetic resonance imaging was applied to the DWI and ADC sequences. The thickness of each slice was set to 1 mm, and the total number of slices was set to 100. Acute SCE was defined as a new hyperintense lesion on the DWI sequence with a corresponding hypointense area on the matched ADC sequence of the post-procedural brain MRI. The total number, size, volume, and location of SCE in patients with acute hDWI-detected SCE were analyzed by two experienced radiologists who were blinded to patient clinical status using 3D Slicer software [