CAJ | 학술논문

目的：探讨256层 iCT 头颈、冠状动脉一站式扫描的检查技术及图像质量分析。方法连续对本院106例患者进行256层 iCT 头颈、冠状动脉一站式血管造影检查。根据扫描中平均心率(HR)将患者分为3组：40次/min< HR≤60次/min 为低心率组；60次/min<HR≤80次/min 为中等心率组；HR>80次/min 为高心率组。所得原始图像传至 iCT 后处理工作站进行三维重建,采用容积再现(VR),最大密度投影(MIP),多平面重组(MPR)及曲面重建(CPR)等方法。由2名资深影像科医师分别对头颈血管及冠状动脉图像质量进行评分。结果3组图像质量比较差异有统计学意义(F =14.886,P =0.000)。低心率组与中等心率组和高心率组之间均存在显著差异(P =0.031和 P =0.026),中等心率组与高心率组间无显著差异。对于优良率的比较,低心率组冠状动脉图像质量优良率达到100%；中等心率组图像质量优良率达到96.6%；高心率组图像质量优良率达到92.6%。同时,低、中、高心率组头颈血管图像质量优良率均达100%。结论256层 iCT 头颈、冠状动脉一站式血管造影扫描可获得较满意的图像质量,在高心率患者的应用中,图像质量无明显下降。
목적：탐토256층 iCT 두경、관상동맥일참식소묘적검사기술급도상질량분석。방법련속대본원106례환자진행256층 iCT 두경、관상동맥일참식혈관조영검사。근거소묘중평균심솔(HR)장환자분위3조：40차/min< HR≤60차/min 위저심솔조；60차/min<HR≤80차/min 위중등심솔조；HR>80차/min 위고심솔조。소득원시도상전지 iCT 후처리공작참진행삼유중건,채용용적재현(VR),최대밀도투영(MIP),다평면중조(MPR)급곡면중건(CPR)등방법。유2명자심영상과의사분별대두경혈관급관상동맥도상질량진행평분。결과3조도상질량비교차이유통계학의의(F =14.886,P =0.000)。저심솔조여중등심솔조화고심솔조지간균존재현저차이(P =0.031화 P =0.026),중등심솔조여고심솔조간무현저차이。대우우량솔적비교,저심솔조관상동맥도상질량우량솔체도100%；중등심솔조도상질량우량솔체도96.6%；고심솔조도상질량우량솔체도92.6%。동시,저、중、고심솔조두경혈관도상질량우량솔균체100%。결론256층 iCT 두경、관상동맥일참식혈관조영소묘가획득교만의적도상질량,재고심솔환자적응용중,도상질량무명현하강。
Objective To explore the scanning technology of head-neck-coronary"one-stop-shop"CT angiography using 256-slice iCT and complete image quality analysis.Methods 106 consecutive patients underwent 256-slice iCT head-neck-coronary"one-stop-shop" CT angiography.According to the average heart rate,patients were divided into three groups,the 1ow heart rate group with the average heart rate ranged from 40 to 60,medium heart rate group with heart rate from 60 to 80 beats per minute and high heart rate group with heart rate more than 80 beats per minute.The volume rendering (VR),maximum intensity projection (MIP), multi-planar reformation (MPR)and curved planar reconstruction (CPR)were employed for three-dimensional reconstruction after the original image reached to the iCT post-processing workstation.The image quality of head-neck artery and coronary artery were assessed by two senior radiologists individually .Results The image quality scores in the three groups show statistic significance (F=14.886 , P =0.000).The difference between low heart rate group and medium heart rate group show statistic significance (P =0.031).The difference between low heart rate group and high heart rate group was statistical significant (P = 0.026 ).There was no statistic difference between medium heart rate group and high heart group.The excellent rates of coronary artery image quality reached to 100%,96.6%,92.6% in low,medium and high heart rate group respectively.The rates of excellent about head-neck vascular im-age quality in the three groups reached to 100%.Conclusion 256-slice iCT head-neck-coronary"one-stop-shop"CT angiography can obtain satisfactory image.The image quality does not decrease in patients with high heat rate.