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題名 | Sixteen-detector Row CT Coronary Angiography: Investigating and Analyzing Reconstructed Images=十六切面電腦斷層冠狀動脈檢查及重組影像偵測分析 |
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作者 | 李明哲; 林政勳; 何上芸; 廖瓊櫻; 楊良友; 張玉君; 李國維; Lee, Ming-che; Lin, Cheng-hsun; Ho, Shang-yun; Liao, Chiung-ying; Yang, Albert D.; Chang, Yu-jun; Lee, Kwo-whei; |
期刊 | 中華放射線醫學雜誌 |
出版日期 | 20060800 |
卷期 | 31:4 民95.08 |
頁次 | 頁159-165 |
分類號 | 416.14 |
語文 | eng |
關鍵詞 | 心週期; 多切面電腦斷層; 重組; Cardiac cycle; Multi-detector row CT; Reconstruction; |
中文摘要 | 以16 切面電腦斷層搭配回顧式心電圖偵測分析心跳低於65 下患者重組影像在心週期的最佳影像。 97 位病患 (男性63 位,女性34 位;平均年齡56 ±13 歲;年齡範圍由30 歲至82 歲)。在接受16 切面電腦斷層冠狀動脈檢查,其影像重組由心週期35% 至85%,間隔10% 。重組影像分段依de Feyter PJ 所著冠狀動脈電腦斷層一書之分段標準評估右冠狀動脈 (第1~3 段)、左主冠狀動脈 (第5段)、左前降枝 (第6~8 段)及左迴旋枝 (第11 、13 段)。重組完之影像品質評分標準由很好到很差分別由1分到5分分佈。1分表示很好,5分表示很差,影像由兩位心臟放射線專科醫師判讀評分。 97 位心跳低於65 下病患之3D 重組影像以SPSS ANOVA 軟體分析出各冠狀動脈皆在75% 心週期有最佳影像品質 (p < 0.05) 。 心跳率低於65bpm 患者之冠狀動脈重組影像最佳品質在心舒張期中末段有最佳品質。在此研究中,75% 心週期為重組最佳影像。 |
英文摘要 | To investigate and analyze reconstructed images of retrospective ECG gating 16–detector row computed tomography for each of the major coronary arteries during the cardiac cycle under 65 heartbeats per minute. 16–detector row coronary artery CT angiographies obtained in 97 patients (63 men, 34 women; mean age, 56 years ±13; age range, 30-82 years) were reconstructed at 35%–85% of the cardiac cycle in increments of 10%. Two independent reviewers who specialize in cardiac radiology assessed the image quality, obtained with three-dimensional post-processing for segments 1–3 (right coronary artery) , segments 5–8 (left main and left anterior descending coronary arteries) , and segments 11 and 13 (left circumflex artery) . Segments were defined according to the textbook of de Feyter PJ. The grades were assigned: 1, excellent; 2, good; 3, fair; 4, poor; and 5, very poor. The three-dimensional reconstructed image score data were statistically analyzed with SPSS software version 10.0. The authors analyzed 97 patients’ data with 2-way ANOVA and found the left anterior descending artery, left circumflex artery and right coronary artery all best visualized at 75% of the cardiac cycle (p < .05) . Our results demonstrated that the reconstructed images of coronary arteries usually performed optimally during mid-to-late diastole when patients’ heart rate is under 65 bpm. 75% of the cardiac phase was the best visualization phase for all coronary arteries in this study. |
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