1. Analytical quantification of aortic valve 18F-sodium fluoride PET uptake
- Author
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Massera, Daniele, Doris, Mhairi K, Cadet, Sebastien, Kwiecinski, Jacek, Pawade, Tania A, Peeters, Frederique ECM, Dey, Damini, Newby, David E, Dweck, Marc R, and Slomka, Piotr J
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Biomedical Imaging ,Bioengineering ,Cardiovascular ,Clinical Research ,Heart Disease ,Detection ,screening and diagnosis ,4.2 Evaluation of markers and technologies ,Aged ,Algorithms ,Aortic Valve ,Female ,Fluorine Radioisotopes ,Humans ,Image Processing ,Computer-Assisted ,Male ,Middle Aged ,Motion ,Observer Variation ,Positron Emission Tomography Computed Tomography ,Reproducibility of Results ,Signal-To-Noise Ratio ,Sodium Fluoride ,Software ,User-Computer Interface ,Positron emission tomography ,cardiac motion ,computed tomography ,valvular disease ,Cardiorespiratory Medicine and Haematology ,Cardiovascular System & Hematology ,Cardiovascular medicine and haematology - Abstract
BackgroundChallenges to cardiac PET-CT include patient motion, prolonged image acquisition and a reduction of counts due to gating. We compared two analytical tools, FusionQuant and OsiriX, for quantification of gated cardiac 18F-sodium fluoride (18F-fluoride) PET-CT imaging.MethodsTwenty-seven patients with aortic stenosis were included, 15 of whom underwent repeated imaging 4 weeks apart. Agreement between analytical tools and scan-rescan reproducibility was determined using the Bland-Altman method and Lin's concordance correlation coefficients (CCC).ResultsImage analysis was faster with FusionQuant [median time (IQR) 7:10 (6:40-8:20) minutes] compared with OsiriX [8:30 (8:00-10:10) minutes, p = .002]. Agreement of uptake measurements between programs was excellent, CCC = 0.972 (95% CI 0.949-0.995) for mean tissue-to-background ratio (TBRmean) and 0.981 (95% CI 0.965-0.997) for maximum tissue-to-background ratio (TBRmax). Mean noise decreased from 11.7% in the diastolic gate to 6.7% in motion-corrected images (p = .002); SNR increased from 25.41 to 41.13 (p = .0001). Aortic valve scan-rescan reproducibility for TBRmax was improved with FusionQuant using motion correction compared to OsiriX (error ± 36% vs ± 13%, p
- Published
- 2020