雙射源電腦斷層：心臟冠狀動脈電腦斷層R-R間期重組範圍研究

Dual-Source Computed Tomography: Research of Reconstruction Coronary Artery Computed Tomography Angiography Image in R-R Interval Phase

方玉瑤(Yu-Yao Fang) ； 黃武達(Wu-Dar Huang) ； 林鼎裕(Tin-Yu Lin)

《台灣應用輻射與同位素雜誌》 8卷3期 (2012/09) Pp. 311-320

https://doi.org/10.29832/TJARI.201209.0002

摘要

此篇為評估R-R間期最佳重組百分比：類神經網路結合心臟冠狀動脈影像量化數據之前期研究。R-R間期為聯繫兩個QRS波的R波時間，開始有著許多的文獻在探討心臟冠狀動脈電腦斷層攝影在臨床上的應用。心臟冠狀動脈疾病在不同檢查方式下的敏感度及特異性，其中心臟冠狀動脈電腦斷層攝影的敏感度（Sensitivity）（CCTA）達91%及特異性（Specificity）達93%。本研究使用西門子128列（128 detector-row）雙射源電腦斷層掃描儀（Dual-source computed tomography, DSCT），配合高壓顯影劑注射器。執行非侵入式的心臟冠狀動脈及微細血管檢查。收集的受檢者影像共90位，男性67位，女性23位，依心律區分為60-69次/分、70-79次/分和80-89次/分各收集30位受檢者影像，在每個R-R間期的1%中，R-R間期為聯繫兩個QRS波的R波時間，進行影像重組為R-R重組間期。由三位臨床放射線技術專家，在心臟冠狀動脈電腦斷層影像R-R重組間期1%-100%中，隨機進行60張心臟冠狀動脈電腦斷層軸位影像品質的判定，依照專家的標準，得到心臟冠狀動脈電腦斷層R-R間期重組範圍之研究。心臟冠狀動脈電腦斷層影像重組收縮間期範圍，在心跳數60-69次/分時，為32%-42%，平均為37%，舒張間期範圍為65%-80%，平均為72.5%。在心跳數70-79次/分時，收縮間期範圍為34%-46.5%，平均為41.7%，部分（83%）舒張間期範圍為70.5%-75%，平均為73.1%。在心跳數80-89次/分時，收縮間期範圍為38%-51.5%，無心臟冠狀動脈電腦斷層影像重組舒張間期範圍。此結果可以做為放射師進行心臟冠狀動脈電腦斷層影像重組之參考依據。

關鍵字

R-R間期 ； 雙射源電腦斷層 ； 心臟冠狀動脈電腦斷層攝影

並列摘要

As the time went on, the development of CT were less than 50 years. The single detector raw has transformed into multi-detector raw in this field. In the past, the scan time of CT was 40min. Until now, it is only several seconds. At the spatial resolution and temperature resolution are much better than before. The CT equipment manufacturers in order to improve the heart motion limitations that develop coronary artery computed tomography angiography which such as 16-raw detectors of CT scanner. In clinical applications, there were many technical literatures of coronary artery CT angiography. After that, many literatures of 16-raw detectors of CT were compared with 64 raw detectors CT in coronary artery images. In clinical applications, there were many technical literatures of coronary artery CT angiography. After that, many literatures of 16-raw detectors of CT were compared with 64 raw detectors CT in coronary artery images. The best of sensitivity (91%) and specificity (93%) is the Coronary artery computed tomography angiography of the examinations in cardiac diseases. The Coronary artery computed tomography angiography was used 128 detector-row modality and high pressure injection. In this research, we collected 90 patients that included 67 males and 23 females. The range of the reconstruction is 32%-42% in systolic phase and 65%-80% in diastolic phase at 60-69 heartbeats/min. The range of the reconstruction is 34.5%-46.5% in systolic phase and 70.5%-75% in part of diastolic phase (83%) at 70-79 heartbeats/min. The range of the reconstruction is 38%-51.5% in systolic phase and at 70-79 heartbeats/min. The result of this research could be the references in reconstruction CCTA image in R-R interval phase.

並列關鍵字

Spatial Resolution ； Temperature Resolution ； Computed Tomography Angiography