BACKGROUND: Multidetector CT (MDCT) seems to be a promising tool for detection of neonatal coronary arteries, but whether the ECG-gated or non-ECG-gated technique should be used has not been established. OBJECTIVE: To compare the detection rate and image quality of neonatal coronary arteries on MDCT using ECG-gated and non-ECG-gated techniques. MATERIALS AND METHODS: Twelve neonates with complex congenital heart disease were included. The CT scan was acquired using an ECG-gated technique, and the most quiescent phase of the RR interval was selected to represent the ECG-gated images. The raw data were then reconstructed without the ECG signal to obtain non-ECG-gated images. The detection rate and image quality of nine coronary artery segments in the two sets of images were then compared. A two-tailed paired t test was used with P values <0.05 considered as statistically significant. RESULTS: In all coronary segments the ECG-gated technique had a better detection rate and produced images of better quality. The difference between the two techniques ranged from 25% in the left main coronary artery to 100% in the distal right coronary artery. CONCLUSION: For neonates referred for MDCT, if evaluation of coronary artery anatomy is important for the clinical management or surgical planning, the ECG-gated technique should be used because it can reliably detect the coronary arteries.
BACKGROUND: Multidetector CT (MDCT) seems to be a promising tool for detection of neonatal coronary arteries, but whether the ECG-gated or non-ECG-gated technique should be used has not been established. OBJECTIVE: To compare the detection rate and image quality of neonatal coronary arteries on MDCT using ECG-gated and non-ECG-gated techniques. MATERIALS AND METHODS: Twelve neonates with complex congenital heart disease were included. The CT scan was acquired using an ECG-gated technique, and the most quiescent phase of the RR interval was selected to represent the ECG-gated images. The raw data were then reconstructed without the ECG signal to obtain non-ECG-gated images. The detection rate and image quality of nine coronary artery segments in the two sets of images were then compared. A two-tailed paired t test was used with P values <0.05 considered as statistically significant. RESULTS: In all coronary segments the ECG-gated technique had a better detection rate and produced images of better quality. The difference between the two techniques ranged from 25% in the left main coronary artery to 100% in the distal right coronary artery. CONCLUSION: For neonates referred for MDCT, if evaluation of coronary artery anatomy is important for the clinical management or surgical planning, the ECG-gated technique should be used because it can reliably detect the coronary arteries.
Authors: Jason T Su; Taylor Chung; Raja Muthupillai; Ricardo H Pignatelli; Grace C Kung; Laura K Diaz; G Wesley Vick; John P Kovalchin Journal: Am J Cardiol Date: 2005-03-01 Impact factor: 2.778
Authors: J Soongswang; A Nana; D Laohaprasitiporn; K Durongpisitkul; C Kangkagate; W Rochanasiri; T Kovitcharoentrakul Journal: J Med Assoc Thai Date: 2000-11
Authors: Si Chan Sung; Yun Hee Chang; Hyoung Doo Lee; Siho Kim; Jong Soo Woo; Young Seok Lee Journal: Ann Thorac Surg Date: 2005-08 Impact factor: 4.330