Objectives: To evaluate image quality, coronary evaluability and radiation exposure of coronary CT angiography (CCTA) performed with whole-heart coverage cardiac-CT in patients with atrial fibrillation (AF). Materials and methods: We prospectively enrolled 164 patients with AF who underwent a clinically indicated CCTA with a 16-cm z-axis coverage scanner. In all patients CCTA was performed using prospective ECG-triggering with targeted RR interval. We evaluated image quality, coronary evaluability and effective dose (ED). Patients were divided in two subgroups based on heart rate (HR) during imaging. Group 1: 64 patients with low HR (OpenSPiltSPi75 bpm), group 2: 100 patients with high HR (â¥75 bpm). Written informed consent was obtained from all patients and the institutional ethics committee approved the study protocol. Results: In a segment-based analysis, coronary evaluability was 98.4 % (2,577/2,620 segments) in the whole population, without significant differences between groups (1,013/1,024 (98.9 %) and 1,565/1,596 (98.1 %), for groups 1 and 2, respectively, p=0.15). Mean ED was similar in both groups (3.8Â±1.9 mSv and 3.9Â±2.1 mSv in groups 1 and 2, respectively, p=0.75) Conclusions: The whole-heart-coverage scanner could evaluate coronary arteries with high image quality and without increase in radiation exposure in AF patients, even in the high HR group. Key points: â¢ Last-generation CT scanner improves coronary artery assessment in AF patients. â¢ The new CT scanner enables low radiation exposure in AF patients. â¢ Diagnostic ICA maybe avoided in AF patients with suspected CAD. â¢ Whole-heart coverage CT scanner enables low radiation exposure in AF patients.
Image quality and radiation dose of coronary CT angiography performed with whole-heart coverage CT scanner with intra-cycle motion correction algorithm in patients with atrial fibrillation / D. Andreini, G. Pontone, S. Mushtaq, M.E. Mancini, E. Conte, M. Guglielmo, V. Volpato, A. Annoni, A. Baggiano, A. Formenti, V. Ditali, M. Perchinunno, C. Fiorentini, A.L. Bartorelli, M. Pepi. - In: EUROPEAN RADIOLOGY. - ISSN 0938-7994. - 28:4(2018 Apr), pp. 1383-1392.
|Titolo:||Image quality and radiation dose of coronary CT angiography performed with whole-heart coverage CT scanner with intra-cycle motion correction algorithm in patients with atrial fibrillation|
ANDREINI, DANIELE (Corresponding)
|Parole Chiave:||Atrial fibrillation; Coronary CT angiography; Coronary evaluability; Image quality; Radiation dose; Radiology, Nuclear Medicine and Imaging|
|Settore Scientifico Disciplinare:||Settore MED/11 - Malattie dell'Apparato Cardiovascolare|
Settore MED/36 - Diagnostica per Immagini e Radioterapia
|Data di pubblicazione:||apr-2018|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s00330-017-5131-2|
|Appare nelle tipologie:||01 - Articolo su periodico|