Assessment of Arterial Involvement in Pancreatic Cancer: Utility of Reconstructed CT Images Perpendicular to Artery.

The purpose of this study was to investigate the utility of reconstructed CT images perpendicular to the artery for assessing arterial involvement from pancreatic cancer and compare the interobserver variability between it and the current diagnostic imaging method. This retrospective study included patients with pancreatic cancer in the pancreatic body or tail who underwent preoperative pancreatic protocol CT and distal pancreatectomy. Five radiologists used axial and coronal CT images (current method) and perpendicular reconstructed CT images (proposed method) to determine if the degree of solid soft-tissue contact with the splenic artery was ≤180° or >180°.

FDG uptake in the cervical muscles after neck dissection: imaging features and postoperative natural course on F‑FDG‑PET/CT.

Purpose: This study aimed to assess the imaging features and postoperative natural course of F-fluorodeoxyglucose (FDG) uptake in the cervical muscles after neck dissection.

Materials And Methods: This study included 83 patients who underwent preoperative and postoperative F-FDG-PET/CT and were diagnosed with head and neck malignancy after neck dissection. Postoperative F-FDG-PET/CT was performed within 5 years after neck dissection.

Two cases of flow void sign of temporal bone metastasis from follicular thyroid carcinoma.

This report describes CT and MRI findings of temporal bone metastasis from follicular thyroid carcinoma in two cases. Both of these had large, osteolytic, hypervascular masses of the temporal bone, accompanied by internal scattered bone fragments and extraosseous mass formation on unenhanced and contrast-enhanced CT images. In the first case, several dilated and tortuous vessels within the markedly hypervascular mass were observed on the arterial phase of dynamic contrast-enhanced CT images.

Deep learning image reconstruction for pancreatic low-dose computed tomography: comparison with hybrid iterative reconstruction.

Purpose: To evaluate image quality, image noise, and conspicuity of pancreatic ductal adenocarcinoma (PDAC) in pancreatic low-dose computed tomography (LDCT) reconstructed using deep learning image reconstruction (DLIR) and compare with those of images reconstructed using hybrid iterative reconstruction (IR).

Methods: Our institutional review board approved this prospective study. Written informed consent was obtained from all patients.