The effect of reduced scan time on response assessment FDG-PET/CT imaging using Deauville score in patients with lymphoma

Purpose [ 18 F]Fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG-PET/CT) is used for response assessment during therapy in Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL). Clinicians report the scans visually using Deauville criteria. Improved performance in modern PET/...

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Bibliographic Details
Published in:European journal of hybrid imaging 2021-01, Vol.5 (1), p.2-2, Article 2
Main Authors: Hornnes, Charlotte, Loft, Annika, Højgaard, Liselotte, Andersen, Flemming Littrup
Format: Article
Language:English
Subjects:
Acquisition time
Computed tomography
Cost control
Cost savings
Deauville score
Diagnostic systems
Emission analysis
Image acquisition
Image quality
Image reconstruction
Imaging
Lymphoma
Medical imaging
Medicine
Medicine & Public Health
Non-Hodgkin's lymphoma
Nuclear Medicine
Original
Original Article
PET/CT
Positron emission
Positron emission tomography
Radiology
Scanners
Tomography
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Summary:Purpose [ 18 F]Fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG-PET/CT) is used for response assessment during therapy in Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL). Clinicians report the scans visually using Deauville criteria. Improved performance in modern PET/CT scanners could allow for a reduction in scan time without compromising diagnostic image quality. Additionally, patient throughput can be increased with increasing cost-effectiveness. We investigated the effects of reducing scan time of response assessment FDG-PET/CT in HL and NHL patients on Deauville score (DS) and image quality. Methods Twenty patients diagnosed with HL/NHL referred to a response assessment FDG-PET/CT were included. PET scans were performed in list-mode with an acquisition time of 120 s per bed position(s/bp). From PET list-mode data images with full acquisition time of 120 s/bp and shorter acquisition times (90, 60, 45, and 30 s/bp) were reconstructed. All images were assessed by two specialists and assigned a DS. We estimated the possible savings when reducing scan time using a simplified model based on assumed values/costs for our hospital. Results There were no significant changes in the visually assessed DS when reducing scan time to 90 s/bp, 60 s/bp, 45 s/bp, and 30 s/bp. Image quality of 90 s/bp images were rated equal to 120 s/bp images. Coefficient of variance values for 120 s/bp and 90 s/bp images was significantly
ISSN:2510-3636
2510-3636
DOI:10.1186/s41824-021-00096-0