Paper Info
Title
Very low-dose adult whole-body tumor imaging with F-18 FDG PET/CT
Abstract
The aim of this study was to evaluate if effective radiation dose due to PET component in adult whole-body tumor imaging with time-of-flight F-18 FDG PET/CT could be significantly reduced. We retrospectively analyzed data for 10 patients with the body mass index ranging from 25 to 50. We simulated F-18 FDG dose reduction to 25% of the ACR recommended dose via reconstruction of simulated shorter acquisition time per bed position scans from the acquired list data. F-18 FDG whole-body scans were reconstructed using time-of-flight OSEM algorithm and advanced system modeling. Two groups of images were obtained: group A with a standard dose of F-18 FDG and standard reconstruction parameters and group B with simulated 25% dose and modified reconstruction parameters, respectively. Three nuclear medicine physicians blinded to the simulated activity independently reviewed the images and compared diagnostic quality of images. Based on the input from the physicians, we selected optimal modified reconstruction parameters for group B. In so obtained images, all the lesions observed in the group A were visible in the group B. The tumor SUV values were different in the group A, as compared to group B, respectively. However, no significant differences were reported in the final interpretation of the images from A and B groups. In conclusion, for a small number of patients, we have demonstrated that F-18 FDG dose reduction to 25% of the ACR recommended dose, accompanied by appropriate modification of the reconstruction parameters provided adequate diagnostic quality of PET images acquired on time-of-flight PET/CT.
Year
DOI
Venue
2015
10.1117/12.2082420
Proceedings of SPIE
Keywords
Field
DocType
radiation dose in whole body F-18 FDG PET/CT,dose reduction in time-of-flight PET,time-of-flight PET acquisition and reconstruction,SharpIR algorithm
Nuclear medicine,PET-CT,Computer vision,Radiation dose,Medical physics,Artificial intelligence,Physics
Conference
Volume
ISSN
Citations 
9417
0277-786X
1
PageRank 
References 
Authors
0.35
0
6
Name
Order
Citations
PageRank
Andrzej Krol1298.49
muhammad naveed252.05
mary mcgrath310.35
michele lisi410.35
cathy lavalley510.35
David H. Feiglin6188.32