Rationale and Objectives: To evaluate image quality, coronary interpretability and radiation exposure of coronary CT angiography (CCTA)performed in patients with atrial fibrillation (AF)with the latest scanner generation, comparing two different technical approaches. A new scanner that combines a 0.23 mm spatial resolution, a new generation of iterative reconstruction, fast gantry rotation time and the intracycle motion-correction algorithm to improve the temporal resolution was recently introduced in the clinical field. Materials and Methods: We enrolled 105 consecutive patients with chronic AF who performed CCTA with a whole-heart coverage high-definition CT scanner (16-cm z-axis coverage with 256 detector rows, 0.28 s gantry rotation time). Five of them were excluded for impaired renal function. Patients were randomized between a double acquisition protocol (50 patients, group 1)or a single acquisition protocol (50 patients, group 2). The image quality, coronary segment interpretability and effective dose (ED)of CCTA were assessed. Results: The mean HR during the scan was 85.6±21 bpm in group 1 vs. 83.7±23 bpm in Group 2, respectively (p < ns). In group 2, overall image quality was high and comparable with that of group 1 (Likert scale =3.2 ± 1.4 vs. 3.3 ± 1.2, p = ns, in group 1 and 2, respectively). Coronary interpretability was high and similar between the two groups (97.5% and 97.1% in group 1 and 2, p = ns, respectively). Mean ED was significantly higher in group 1 than in group 2 (5.3 ± 1.8 mSv vs. 2.7 ± 0.7 mSv, p < 0.001). Conclusion: The novel whole-heart coverage CT scanner allows to perform CCTA with a single-acquisition protocol with high image quality and low radiation exposure in AF patients.

Mushtaq, S., Pontone, G., Conte, E., Guglielmo, M., Consiglio, E., Magatelli, M., et al. (2019). Low-Dose Coronary CT Angiography in Patients with Atrial Fibrillation: Comparison of Image Quality and Radiation Exposure with Two Different Approaches. ACADEMIC RADIOLOGY, 26(6), 791-797 [10.1016/j.acra.2018.07.003].

Low-Dose Coronary CT Angiography in Patients with Atrial Fibrillation: Comparison of Image Quality and Radiation Exposure with Two Different Approaches

Muscogiuri G;
2019

Abstract

Rationale and Objectives: To evaluate image quality, coronary interpretability and radiation exposure of coronary CT angiography (CCTA)performed in patients with atrial fibrillation (AF)with the latest scanner generation, comparing two different technical approaches. A new scanner that combines a 0.23 mm spatial resolution, a new generation of iterative reconstruction, fast gantry rotation time and the intracycle motion-correction algorithm to improve the temporal resolution was recently introduced in the clinical field. Materials and Methods: We enrolled 105 consecutive patients with chronic AF who performed CCTA with a whole-heart coverage high-definition CT scanner (16-cm z-axis coverage with 256 detector rows, 0.28 s gantry rotation time). Five of them were excluded for impaired renal function. Patients were randomized between a double acquisition protocol (50 patients, group 1)or a single acquisition protocol (50 patients, group 2). The image quality, coronary segment interpretability and effective dose (ED)of CCTA were assessed. Results: The mean HR during the scan was 85.6±21 bpm in group 1 vs. 83.7±23 bpm in Group 2, respectively (p < ns). In group 2, overall image quality was high and comparable with that of group 1 (Likert scale =3.2 ± 1.4 vs. 3.3 ± 1.2, p = ns, in group 1 and 2, respectively). Coronary interpretability was high and similar between the two groups (97.5% and 97.1% in group 1 and 2, p = ns, respectively). Mean ED was significantly higher in group 1 than in group 2 (5.3 ± 1.8 mSv vs. 2.7 ± 0.7 mSv, p < 0.001). Conclusion: The novel whole-heart coverage CT scanner allows to perform CCTA with a single-acquisition protocol with high image quality and low radiation exposure in AF patients.
Articolo in rivista - Articolo scientifico
Atrial fibrillation; Coronary CT angiography; Radiation exposure;
English
791
797
7
Mushtaq, S., Pontone, G., Conte, E., Guglielmo, M., Consiglio, E., Magatelli, M., et al. (2019). Low-Dose Coronary CT Angiography in Patients with Atrial Fibrillation: Comparison of Image Quality and Radiation Exposure with Two Different Approaches. ACADEMIC RADIOLOGY, 26(6), 791-797 [10.1016/j.acra.2018.07.003].
Mushtaq, S; Pontone, G; Conte, E; Guglielmo, M; Consiglio, E; Magatelli, M; Oliveira, M; Muscogiuri, G; Annoni, A; Baggiano, A; Formenti, A; Mancini, M; Di Odoardo, L; Melotti, E; Fiorentini, C; Bartorelli, A; Pepi, M; Andreini, D
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/377608
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