基于冠状动脉CT血管成像三维重建的左房间隔囊袋的影像解剖学观察

Anatomical observation of left atrial septal pouch based on coronary CT angiography combined with three-dimensional reconstruction technique

目的观察基于冠状动脉CT血管成像(CTA)三维重建影像的左房间隔囊袋(LASP)检出情况,以及LASP的影像解剖学特征。方法横断面研究。纳入山东大学齐鲁医院德州医院2021年12月—2022年1月行冠状动脉CTA检查的受检者332例。其中男200例、女132例,年龄31~83(57.3±9.4)岁,按照年龄分为A组(≥50岁)271例、B组(<50岁)61例。将受检者的CTA图像进行三维重建观察LASP。观察项目:(1)比较LASP在性别及A、B年龄组间的检出率差异;观察LASP形态及开口方向。(2)测量并比较A、B组受检者中LASP的囊袋深度、囊袋壁厚度、囊袋口宽度。结果(1)332例受检者中共检出LASP 69例(20.8%),其中男46例(23.0%,46/200)、女23例(17.4%,23/132),差异无统计学意义(χ^(2)=1.50,P=0.220);A组检出LASP 56例(20.7%,56/271)、B组检出LASP 13例(21.3%,13/61),差异无统计学意义(χ^(2)=0.01,P=0.910)。囊袋口的形态多数为弧形,开口朝向上方或前上方,其中朝上方开口30例,朝前上方开口39例。(2)69例LASP的囊袋深度、囊袋壁厚度、囊袋口宽度分别为2.59~15.44(7.79±2.91)mm、0.58~3.21(1.57±0.41)mm、0.80~4.75(1.98±0.72)mm,其中≥50岁的LASP分别为(7.64±2.77)mm、(1.58±0.43)mm、(1.95±0.74)mm,<50岁的LASP分别为(8.43±3.50)mm、(1.51±0.34)mm、(2.09±0.68)mm,差异均无统计学意义(t=0.87、0.55、0.63,P值均>0.05)。结论冠状动脉CTA三维重建可观察囊袋的形态特征,其检出率未见性别和年龄的差异,并且年龄≥50岁与<50岁者LASP囊袋深度、囊袋壁厚度、囊袋口宽度也未见差异。

Objective This study aims to determine the detection rate and anatomical observation of left atrial septal pouch(LASP)based on coronary CT angiography(CTA)combined with three-dimensional reconstruction technology.Methods A cross-sectional study was conducted.A total of 332 subjects who underwent coronary CTA examination in Dezhou Hospital of Qilu Hospital of Shandong University from December 2021 to January 2022 were enrolled.The participants included 200 males and 132 females aged 31 to 83(57.3±9.4)years.According to their age,they were divided into group A(≥50 years old)with 271 cases and group B(<50 years old)with 61 cases.Three-dimensional reconstruction technology was used to observe LASP based on the CTA images of subjects.The observation items were as follows:(1)to compare differences in the detection rate of LASP between sex and age groups A and B;observe the shape and opening direction of LASP;and(2)measure and compare the pouch depth,pouch wall thickness,and pouch mouth width of LASP between groups A and B.Results(1)Among 332 subjects,69 cases(20.8%)of LASP were detected;of which,46 cases(23.0%,46/200)were males and 23 cases(17.4%,23/132)were females,with no significant difference(χ^(2)=1.50,P=0.220).LASP was detected in 56 cases(20.7%,56/271)in group A and 13 cases(21.3%,13/61)in group B,with no significant difference(χ^(2)=0.01,P=0.910).The shape of the pouch mouth was mostly arc,and the opening faces upward or front and upper,of which 30 cases face upward and 39 cases face front and upper.(2)The pouch depth,pouch wall thickness,and pouch width of 69 LASP cases were 2.59-15.44(7.79±2.91),0.58-3.21(1.57±0.41),and 0.80-4.75(1.98±0.72)mm,respectively;the values in patients in aged≥50 years were(7.64±2.77)mm,(1.58±0.43)mm,and(1.95±0.74)mm,while those in aged<50 years were(8.43±3.50)mm,(1.51±0.34)mm,and(2.09±0.68)mm,respectively.No significant difference was found between different age group(t=0.87,0.55,0.63;all P values>0.05).Conclusion Coronary CTA combined with three-dimensional reconstruction technique can be used to observe the morphological characteristics of the capsular pouch.The method shows no difference in the detection rate between sex and age as well as in the depth,wall thickness,and mouth width of the capsular pouch between people aged≥50 and<50 years.