No clinically relevant differences between positron emission tomography (PET) reconstructions based on low-dose or contrast-enhanced CT in combined integrated multiphase (18) F-Fluorethylcholine PET/CT for prostate cancer.

Objectives: To qualitatively and quantitatively compare the reconstructions of (18) F-Fluorethylcholine (FCH) positron emission tomography (PET) based on the non-enhanced X-ray computed tomography (neCT) and contrast-enhanced CT (ceCT) acquired in integrated PET/CT in prostate cancer (PCA) patients.

Methods: We retrospectively analysed FCH-PET/CTs of 63 PCA patients. PET images were reconstructed using either neCT or ceCT for attenuation correction.

Body surface area adapted iopromide 300 mg/ml versus 370 mg/ml contrast medium injection protocol: influence on quantitative and clinical assessment in combined PET/CT.

Purpose: To investigate the quantitative and qualitative differences between combined positron emission tomography and computed X-ray tomography (PET/CT) enhanced with contrast medium with either an iodine concentration 300 mg/ml or 370 mg/ml.

Materials And Methods: 120 consecutive patients scheduled for F-18-Fluorodeoxyglucose (FDG) PET/CT were included. The first (second) 60 patients received contrast medium with 300 (370) mg iodine/ml.