CAJ | 학술논문

目的利用多排螺旋CT(MDCT)心电门控技术评价1个心动周期内肺静脉口径的变化.方法前瞻性收集25例利用回顾性心电门控技术进行扫描的检查者,进行10个时相的肺静脉重建.首先在横断位同一层面上测量出右下肺静脉(RIPV)各个时相的口径,得出其最大值及最小值所对应的2个时相,然后在这2个时相下运用多种后处理技术重建4条肺静脉,最后分别测量其口径最大值与最小值并进行统计学分析.结果横断面上右下肺静脉最大值出现在35%时相(16.21±2.53),最小值出现在85%时相(13.29±2.11);4条肺静脉口径在35%时相的最大值与85%时相最小值比较具有统计学意义(P<0.01).结论 MDCT心电门控技术可以更准确描述肺静脉口径,在1个心动周期内肺静脉口径呈现周期性变化.
목적 이용다배라선CT(MDCT)심전문공기술평개1개심동주기내폐정맥구경적변화.방법 전첨성수집25례이용회고성심전문공기술진행소묘적검사자,진행10개시상적폐정맥중건.수선재횡단위동일층면상측량출우하폐정맥(RIPV)각개시상적구경,득출기최대치급최소치소대응적2개시상,연후재저2개시상하운용다충후처리기술중건4조폐정맥,최후분별측량기구경최대치여최소치병진행통계학분석.결과 횡단면상우하폐정맥최대치출현재35%시상(16.21±2.53),최소치출현재85%시상(13.29±2.11);4조폐정맥구경재35%시상적최대치여85%시상최소치비교구유통계학의의(P<0.01).결론 MDCT심전문공기술가이경준학묘술폐정맥구경,재1개심동주기내폐정맥구경정현주기성변화.
Objective To study the variation of pulmonary venous(PV) ostium during cardiac cycle by using ECG-gated multi-detector spiral computed tomography(MDCT). Methods 25 adults examined with retrospective ECG-MDCT and reconstruction of PV was done at 10 windows. Firstly,the ostium diameters of right inferior pulmonary vein(RIPV) of all windows at same transect were measured, the two windows corresponding to their maximal and minimal ostium diameter were obtained, then ,four pulmonary veins at this two windows were reconstructed by using the technology of multiple post-processing,at last,the maximal and minimal values of pulmonary venous ostium at this two reconstructed windows were measured and analysed statistically. Results The maximal ostium diameter of RIPV presented at 35% window(16. 21 ±2. 53) ,and its ostium diameter presented at 85% window(13. 29± 2. 11)at transect;the maximal value at 35% window and minimal valae at 85% window of four pulmonary venous ostium was of statistical significance(P<0. 01). Conclusion The technology of ECG-gated multi -detector spiral computed tomography may be exactly used to measure pulmomary venous ostium, and the size of pulmonary venous ostium is cyclic change during cardiac cycle.