1. ECG-edit function in multidetector-row computed tomography coronary arteriography for patients with arrhythmias.
- Author
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Matsutani, Hideyuki, Sano, Tomonari, Kondo, Takeshi, Morita, Hitomi, Arai, Takehiro, Sekine, Takako, Takase, Shinichi, Oida, Akitsugu, Fukazawa, Hiroshi, Suguta, Masahiko, Kondo, Makoto, Kodama, Takahide, Orihara, Tadaaki, Yamada, Norikazu, Tsuyuki, Masaharu, and Narula, Jagat
- Subjects
Aged ,Arrhythmia ,Sinus: radiography ,Arrhythmias ,Cardiac: radiography ,Atrial Premature Complexes: radiography ,Atrioventricular Block: radiography ,Coronary Angiography ,Coronary Vessels ,Electrocardiography: methods ,Female ,Humans ,Imaging ,Three-Dimensional ,Male ,Middle Aged ,Tomography ,X-Ray Computed: methods ,Ventricular Premature Complexes: radiography ,arrhythmia ,coronary artery ,ECG-edit function ,multidetector-row computed tomography (MDCT)radiation-exposure ,cardiac ct ,heart-rate ,angiography ,impact ,Aged ,Arrhythmia ,Sinus: radiography ,Arrhythmias ,Cardiac: radiography ,Atrial Premature Complexes: radiography ,Atrioventricular Block: radiography ,Coronary Angiography ,Coronary Vessels ,Electrocardiography: methods ,Female ,Humans ,Imaging ,Three-Dimensional ,Male ,Middle Aged ,Tomography ,X-Ray Computed: methods ,Ventricular Premature Complexes: radiography ,arrhythmia ,coronary artery ,ECG-edit function ,multidetector-row computed tomography (MDCT)radiation-exposure ,cardiac ct ,heart-rate ,angiography ,impact - Abstract
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.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.The ECG-edit function is useful for reconstructing coronary MDCT images in many arrhythmias, and provides clinically acceptable images in most cases.
- Published
- 2008