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Clinical Trial
. 2008 Jul;72(7):1071-8.
doi: 10.1253/circj.72.1071.

ECG-edit function in multidetector-row computed tomography coronary arteriography for patients with arrhythmias

Hideyuki Matsutani  1 , Tomonari Sano, Takeshi Kondo, Hitomi Morita, Takehiro Arai, Takako Sekine, Shinichi Takase, Akitsugu Oida, Hiroshi Fukazawa, Masahiko Suguta, Makoto Kondo, Takahide Kodama, Tadaaki Orihara, Norikazu Yamada, Masaharu Tsuyuki, Jagat Narula
Affiliations
Free article
Clinical Trial

ECG-edit function in multidetector-row computed tomography coronary arteriography for patients with arrhythmias

Hideyuki Matsutani et al. Circ J. 2008 Jul.
Free article

Abstract

Background: ECG-gating is necessary for cardiac computed tomography, but is not suitable for arrhythmias, so the aim of this study was to evaluate the usefulness of the ECG-edit function for this purpose.

Methods and results: Of 1,221 patients undergoing 64-row multidetector-row computed tomography coronary angiography (coronary MDCT), 123 patients (28 atrial fibrillation (Af), 39 premature atrial contractions (PAC), 42 premature ventricular contractions (PVC), 3 PAC + PVC, 10 sinus arrhythmias (SA), and a second-degree atrioventricular block (2 degrees AVB)) had arrhythmias necessitating the ECG-edit function. Short R-R interval was deleted and mid-diastolic phases were selected from the long R-R intervals using the "R+absolute time" method. In the present study, the reconstructed images were evaluated using a triple-grade scale A-C, representing excellent, acceptable, and unacceptable image quality. Image quality, categorized as A, B and C, respectively, was 50%, 36% and 14% for the 28 patients with Af; 56%, 36% and 8% for the 39 PAC patients, and 65%, 33% and 2% in the 42 PVC patients. None of the scans of the PAC + PVC, SA, and 2 degrees AVB patients was ranked as C.

Conclusions: The ECG-edit function is useful for reconstructing coronary MDCT images in many arrhythmias, and provides clinically acceptable images in most cases.

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