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The Clinical Value of Nongated Dual‐Source Computed Tomography in Atrial Fibrillation Catheter Ablation
Author(s) -
IWAYAMA TADATERU,
ARIMOTO TAKANORI,
ISHIGAKI DAISUKE,
HASHIMOTO NAOAKI,
KUMAGAI YU,
KOYAMA YO,
KIRIBAYASHI NOBUYUKI,
NETSU SHUNSUKE,
NISHIYAMA SATOSHI,
TAKAHASHI HIROKI,
SHISHIDO TETSURO,
MIYAMOTO TAKUYA,
SATO TOSHIMITSU,
WATANABE TETSU,
KUBOTA ISAO
Publication year - 2016
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/jce.12826
Subject(s) - medicine , nuclear medicine , atrial fibrillation , pulmonary vein , computed tomography , catheter ablation , multidetector computed tomography , radiology
Nongated DSCT for AF Catheter Ablation Introduction Using a high‐pitch dual‐source CT (DSCT), we aimed to quantify the amounts of contrast media, radiation doses, and image qualities in patients undergoing pulmonary vein (PV) isolation. Methods and Results The study enrolled 60 patients who were randomly assigned in a 1: 1: 1 ratio to undergo ECG‐gated 64‐slice multidetector computed tomography (MDCT; group I, n = 20), ECG‐gated 128‐DSCT (group II, n = 20), and nongated 128‐DSCT (group III, n = 20). The total amount of contrast media was lower in groups II and III compared with group I (I: 54.7 ± 5.6, II: 26.6 ± 2.7, and III: 28.7 ± 6.9 mL, P < 0.001). The CT dose index was lower in groups II and III compared with group I (I: 73.1 ± 5.2, II: 3.5 ± 0.1, and III: 3.7 ± 0.1 mGy, P < 0.001). The dose length product was lower in groups II and III compared with group I (I: 1154.8 ± 82.8, II: 75.4 ± 2.3, and III: 77.2 ± 1.9 mGy × cm, P < 0.001). The total CT effective radiation dose was lower in groups II and III compared with group I (I: 16.2 ± 1.2, II: 1.1 ± 0.1, and III: 1.1 ± 0.1 mSv, P < 0.001). The total CT scan duration was shorter in group III compared with groups I and II (I: 30.8 ± 2.2, II: 23.4 ± 3.6, and III: 16.0 ± 2.4 minutes, P < 0.001). There were no significant differences in quality for integrated electroanatomical mapping (EAM) and parameters associated with PV isolation among the 3 groups. Conclusion Nongated 128‐DSCT provides sufficient image quality to allow integrated EAM while exposing the patient to less contrast media, lower radiation doses, and shorter CT scan durations.