飛利浦256iCT在體部大動脈不同檢查方法的應用效果探討

[摘要] 目的 對飛利浦256iCT在體部大動脈不同檢查方法的應用效果進行分析。方法 方便選擇2015年12月—2016年8月間，該院收治的接受256iCT冠狀動脈、主動脈、肺動脈全段一站式成像檢查的56例臨床患者作為研究對象，將其按照檢查方法分成前瞻性心電門控組和回顧性心電門控組，經飛利浦256iCT對受試者展開掃描，對兩組患者的3種血管圖像質量、輻射劑量等進行對比分析。 結果 統計發現，前瞻性心電門控組冠狀動脈掃描節段共計332段，回顧性心電門控組冠狀動脈掃描節段共計328段；肺動脈、主動脈血管分級結果分別為28，可見3種大血管圖像質量兩組比較差異無統計學意義（P>0.05），前瞻性心電門控組平均輻射劑量較回顧性心電門控組發生顯著降低（P<0.05）。 結論 飛利浦256iCT前瞻性心電門控技術在體部大動脈掃描中優勢明顯，可以獲得滿足臨床需求的圖像質量，并且能夠有效降低輻射劑量，值得關注并推廣。

[關鍵詞] 體部大動脈；飛利浦256iCT；前瞻性心電門控技術；輻射劑量

[中圖分類號] R816.2 [文獻標識碼] A [文章編號] 1674-0742（2016）12（b）-0191-03

The Application of Philips 256iCT in the Examination of Different Arteries of Body

CHEN Wan-ping

Department of Radiology， Longyan First Hospital Affiliated to Fujian Medical University， Longyan，Fujian Province，364000 China

[Abstract] Objective To evaluate the effectiveness of Philips 256iCT in the treatment of aorta of the body， and to provide valuable reference information for future clinical diagnosis. Methods Convenient from December 2015 to August 2016， 56 patients with coronary artery， aorta and pulmonary arteries underwent one-stop imaging of 256iCT. The patients were divided into two groups according to the examination method： prospective ECG-gated group and retrospective ECG-gated group. The subjects were scanned by Philips 256iCT. The image quality and radiation dose were compared between the two groups. Results A total of 332 segments of the coronary arteries were prospectively analyzed in the prospective ECG-gated group and 328 segments in the retrospective ECG-gated coronary angiography group. Pulmonary and aortic vascular gradings were 28 and three There was no significant difference between the two groups （P>0.05）. The average radiation dose in prospective ECG-gated group was significantly lower than that in retrospective ECG-gated group（P<0.05）.Conclusion Philips 256iCT prospective ECG gating technique has obvious advantage in aorta scan. It can obtain the image quality which can meet the clinical needs， and can effectively reduce the radiation dose， which is worthy of attention and popularization.

[Key words] Body aorta；Philips 256iCT；Prospective electrocardiographic gating technique；Radiation dose

目前臨床上應用的飛利浦256iCT經氣墊軸承技術，8 cm球面探測器，可以使掃描中，胸腹部、全身大血管的掃描范圍擴展，達到60 cm以上。檢查的輻射劑量則在最大程度上得以降低，能夠保證高質量圖像的同時，有效降低輻射劑量[1]。曾有研究證實，3倍于64排CT的掃描速度的快速門控技術，能夠將過去心臟冠脈檢查作為附屬掃描，在胸腹部等部位掃描的過程中，可附帶進行冠脈掃描。并且，1次注射造影劑，可以展開多部位檢查，為目前臨床上主動脈夾層、肺動脈栓塞等疾病診斷的首選方法[2]。……