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The impact of data-driven respiratory gating in clinical F-18 FDG PET/CT: comparison of free breathing and deep-expiration breath-hold CT protocol
- Title
- The impact of data-driven respiratory gating in clinical F-18 FDG PET/CT: comparison of free breathing and deep-expiration breath-hold CT protocol
- Authors
- Kang, Seo Young; Moon, Byung Seok; Kim, Hye Ok; Yoon, Hai-Jeon; Kim, Bom Sahn
- Ewha Authors
- 김범산; 윤혜전; 문병석; 김혜옥; 강서영
- SCOPUS Author ID
- 김범산; 윤혜전; 문병석; 김혜옥; 강서영
- Issue Date
- 2021
- Journal Title
- ANNALS OF NUCLEAR MEDICINE
- ISSN
- 0914-7187
1864-6433
- Citation
- ANNALS OF NUCLEAR MEDICINE vol. 35, no. 3, pp. 328 - 337
- Keywords
- Data-driven respiratory gating; F-18-FDG PET/CT; Respiratory movement; Free breathing CT; Deep-expiration breath-hold CT
- Publisher
- SPRINGER
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Background Respiratory motion can diminish PET image quality and lead to inaccurate lesion quantifications. Data-driven gating (DDG) was recently introduced as an effective respiratory gating technique for PET. In the current study, we investigated the clinical impact of DDG on respiratory movement in F-18-FDG PET/CT. Method PET list-mode data were collected for each subject and DDG software was utilized for extracting respiratory waveforms. PET images was reconstructed using Q.clear and Q.clear + DDG, respectively. We evaluated SUVmax, SUVmean, the coefficient of variance (CoV), metabolic tumor volume (MTV), and tumor heterogeneity using the area under the curve of cumulative SUV histogram (AUC-CSH). Metabolic parameter changes were compared between each reconstruction method. The Deep-Expiration Breath Hold (DEBH) protocol was introduced for CT scans to correct spatial misalignment between PET and CT and compared with conventional free breathing. The DEBH and free breathing (FB) protocol comparison was made in a separate matching cohort using propensity core matching rather than the same patient. Results Total 147 PET/CT scans with excessive respiratory movements were used to study DDG-mediated correction. After DDG application, SUVmax (P < 0.0001; 8.15 +/- 4.77 vs. 9.03 +/- 5.02) and SUVmean (P < 0.0001; 4.91 +/- 2.44 vs. 5.49 +/- 2.68) of lung and upper abdomen lesions increased, while MTV significantly decreased (P < 0.0001; 7.07 +/- 15.46 vs. 6.58 +/- 15.14). In addition, the percent change of SUVs was greater in lower lung lesions compared to upper lobe lesions. Likewise, the MTV reduction was significantly greater in lower lobe lesions. No significant difference dependent on location was observed in liver lesions. DEBH-mediated CT breathing correction did not make a significant difference in lesion metabolic parameters compared to conventional free breathing. Conclusions These results suggest that DDG correction enables more corrected quantification from respiratory movements for lesions located in the lung and upper abdomen. Therefore, we suggest that DDG is worth using as a standard protocol during F-18-FDG PET/CT imaging.
- DOI
- 10.1007/s12149-020-01574-4
- Appears in Collections:
- 의과대학 > 의학과 > Journal papers
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