Abstract：
OBJECTIVE: The extensibility of the aortic root after the remodeling procedure was evaluated using 4-dimentional computed tomography( 4D-CT).
METHODS: Seventeen patients( 13 males/4 females), mean age 52 years, who had undergone the remodeling procedure in the last 3 years were included. To understand the dynamics of the aortic root after reconstruction, the R-R interval on the electrocardiogram was divided into 10 equal parts, and the percentage change in area of the basal ring/Valsalva sinus/sino-tubular junction (STJ) level was calculated to evaluate the extensibility of the aortic root. For the basal ring, changes in ellipticity and circumference were also compared.
RESULTS: Basal ring, Valsalva sinus, and STJ area changes with cardiac cycle were similar to those in the control group. Basal ring showed a regular circle in systole and an oval in diastole, and its circumference was enlarged in systole.
CONCLUSIONS: The use of 4D-CT made it possible to evaluate the extensibility of the aortic root after remodeling procedure. In particular, the mobility of the basal ring is large, suggesting that it guarantees the physiological opening and closing of the valve and contributes to its durability.
METHODS: Seventeen patients( 13 males/4 females), mean age 52 years, who had undergone the remodeling procedure in the last 3 years were included. To understand the dynamics of the aortic root after reconstruction, the R-R interval on the electrocardiogram was divided into 10 equal parts, and the percentage change in area of the basal ring/Valsalva sinus/sino-tubular junction (STJ) level was calculated to evaluate the extensibility of the aortic root. For the basal ring, changes in ellipticity and circumference were also compared.
RESULTS: Basal ring, Valsalva sinus, and STJ area changes with cardiac cycle were similar to those in the control group. Basal ring showed a regular circle in systole and an oval in diastole, and its circumference was enlarged in systole.
CONCLUSIONS: The use of 4D-CT made it possible to evaluate the extensibility of the aortic root after remodeling procedure. In particular, the mobility of the basal ring is large, suggesting that it guarantees the physiological opening and closing of the valve and contributes to its durability.
摘要：
目的：使用4维计算机断层扫描（4D-CT）评估重塑手术后主动脉根部的可扩展性。
方法：17例患者（男13例/女4例），平均年龄52岁,包括在过去3年中接受过重塑手术的人。为了了解重建后主动脉根部的动力学，心电图上的R-R间期被分成10等份,并计算基底环/Valsalva窦/窦道（STJ）水平的面积变化百分比，以评估主动脉根部的延展性。对于基环，还比较了椭圆度和周长的变化。
结果：基础环，Valsalva窦,STJ面积随心动周期的变化与对照组相似。基底环在收缩期显示规则圆形，在舒张期显示椭圆形，它的周长在收缩期扩大了。
结论：使用4D-CT可以评估重塑手术后主动脉根部的延展性。特别是,基环的流动性很大，这表明它保证了阀门的生理打开和关闭，并有助于其耐用性。
方法：17例患者（男13例/女4例），平均年龄52岁,包括在过去3年中接受过重塑手术的人。为了了解重建后主动脉根部的动力学，心电图上的R-R间期被分成10等份,并计算基底环/Valsalva窦/窦道（STJ）水平的面积变化百分比，以评估主动脉根部的延展性。对于基环，还比较了椭圆度和周长的变化。
结果：基础环，Valsalva窦,STJ面积随心动周期的变化与对照组相似。基底环在收缩期显示规则圆形，在舒张期显示椭圆形，它的周长在收缩期扩大了。
结论：使用4D-CT可以评估重塑手术后主动脉根部的延展性。特别是,基环的流动性很大，这表明它保证了阀门的生理打开和关闭，并有助于其耐用性。
