Zhang Yan, Liang Lu, Ma Huachong, Han Jiagang, Lv Xiuzhang, Ge Huiyu
Department of Ultrasound Medicine, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China.
Radiology Department, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China.
Ultrasound Int Open. 2025 May 5;11:a25696939. doi: 10.1055/a-2569-6939. eCollection 2025.
This study aimed to measure the precise distance from the lowest boundary of a rectal tumor to the anal verge (DTAV) in patients with rectal cancer.
A retrospective analysis was performed on clinical data from 70 rectal cancer patients. DTAV measurements were collected using transrectal biplane ultrasound, MRI, and colonoscopy.
The difference in DTAV measurements between the mean DTAV value obtained by ultrasound (US ) and colonoscopy exhibited a difference of 0.22 cm. In contrast, the difference between US and MRI was 0.48 cm, while the difference between MRI and colonoscopy was -0.26 cm. The ICC for DTAV measurements demonstrated excellent agreement, with values of 0.948 between US and MRI, 0.942 between US and colonoscopy, and 0.943 between MRI and colonoscopy. The minimum DTAV value obtained by ultrasound (US ) was 5.05 cm, the middle DTAV value obtained by ultrasound (US ) was 5.10 cm, and the maximum DTAV value obtained by ultrasound (US ) was 5.30 cm. Notably, the median values of the differences in DTAV measurements between US and US , US and US , as well as US and US , were 0.2 cm, 0.1 cm, and 0.1 cm, respectively. Furthermore, the consistency of DTAV measurements between US and US , US and US , as well as US and US was excellent, with all ICC values reaching 0.999. Additionally, the radiologist's reassessment of MRI DTAV data showed excellent consistency with the original results, with an ICC value of 0.985.
Transrectal biplane ultrasound utilizing EFOV imaging technology exhibited both accuracy and reproducibility for measuring DTAV. This approach provided a highly efficient and practical clinical tool for DTAV measurement.
本研究旨在测量直肠癌患者直肠肿瘤最低边界至肛缘（DTAV）的精确距离。
对70例直肠癌患者的临床资料进行回顾性分析。采用经直肠双平面超声、磁共振成像（MRI）和结肠镜检查收集DTAV测量值。
超声（US ）获得的平均DTAV值与结肠镜检查之间的DTAV测量值差异为0.22 cm。相比之下，US 与MRI之间的差异为0.48 cm，而MRI与结肠镜检查之间的差异为-0.26 cm。DTAV测量的组内相关系数（ICC）显示出极佳的一致性，US 与MRI之间的值为0.948，US 与结肠镜检查之间的值为0.942，MRI与结肠镜检查之间的值为0.943。超声（US ）获得的最小DTAV值为5.05 cm，超声（US ）获得的中间DTAV值为5.10 cm，超声（US ）获得的最大DTAV值为5.30 cm。值得注意的是，US 与US 、US 与US 以及US 与US 之间DTAV测量值差异的中位数分别为0.2 cm、0.1 cm和0.1 cm。此外，US 与US 、US 与US 以及US 与US 之间DTAV测量的一致性极佳，所有ICC值均达到0.999。此外，放射科医生对MRI DTAV数据的重新评估与原始结果显示出极佳的一致性，ICC值为0.985。
利用扩展视野（EFOV）成像技术的经直肠双平面超声在测量DTAV方面具有准确性和可重复性。该方法为DTAV测量提供了一种高效实用的临床工具。
