Umh Heesung, Youp Kyoung-A, Lee Jeongmin, Seo Daeyun, Lim Seongsoo, Namgoong Beomkwan, Choe Ahreum, Hong Hyeajeong, Lee Nanju, Kim Isong, Yoon Junghee, Choi Jihye, Lee Kichang, Yoon Hakyoung, Kim Min Su
Department of Veterinary Clinical Science, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea.
Korea Animal Medical Center, Cheongju-si, Chungcheongbuk-do, Republic of Korea.
Front Vet Sci. 2024 Dec 23;11:1496944. doi: 10.3389/fvets.2024.1496944. eCollection 2024.
The objective of this study is to analyze the morphology and measurement dimensions of patent ductus arteriosus (PDA) based on computed tomography images.
The present study retrospectively evaluated computed tomography angiography data from 25 client-owned dogs diagnosed with PDA. PDA was reconstructed based on the central axis and the minimum diameter, ampulla diameter, angle, ampulla cross-section area, and length values were measured at specific measurement sites. Additionally, the minimum diameter ratio, ampulla diameter ratio, ampulla cross-section diameter, and ampulla cross-section diameter/ampulla diameter ratio values were calculated based on direct measurement values.
The morphology of PDA was distributed as follows: 48% Type IIA, 20% Type IIB, and 32% Type III. A significant correlation was observed between the minimal diameter sagittal and transverse and the ampulla diameter sagittal and transverse, body weight, and angle (descending aorta to PDA). A significant association was observed between ampulla diameter (in both the sagittal and transverse planes) and body weight. The minimal diameter ratio did not demonstrate a significant correlation with the ampulla diameter, body weight, angle and length. However, the ampulla diameter ratio exhibited a significant correlation with the length of the PDA and the angle (descending aorta to PDA). The minimal diameter ratio displayed results that were more closely approximated by a circle, whereas the ampulla diameter ratio showed results that were relatively oval. The ampulla cross-section diameter values differed by an average of 14% from the previously used reference length, ampulla diameter sagittal.
The computed tomography image demonstrated the distinctive cross-sectional configuration of the PDA, which could potentially facilitate advanced pre-procedural planning or the creation of novel occluding devices in the future.
本研究的目的是基于计算机断层扫描图像分析动脉导管未闭（PDA）的形态和测量尺寸。
本研究回顾性评估了25只被诊断为PDA的客户拥有犬的计算机断层血管造影数据。基于中心轴重建PDA，并在特定测量部位测量最小直径、壶腹直径、角度、壶腹横截面积和长度值。此外，根据直接测量值计算最小直径比、壶腹直径比、壶腹横径和壶腹横径/壶腹直径比值。
PDA的形态分布如下：48%为IIA型，20%为IIB型，32%为III型。观察到最小直径矢状面和横断面与壶腹直径矢状面和横断面、体重及角度（降主动脉至PDA）之间存在显著相关性。观察到壶腹直径（矢状面和横断面）与体重之间存在显著关联。最小直径比与壶腹直径、体重、角度和长度未显示出显著相关性。然而，壶腹直径比与PDA的长度和角度（降主动脉至PDA）表现出显著相关性。最小直径比的结果更接近圆形，而壶腹直径比的结果相对呈椭圆形。壶腹横径值与先前使用的参考长度壶腹直径矢状面平均相差14%。
计算机断层扫描图像显示了PDA独特的横截面形态，这可能有助于未来进行更先进的术前规划或创建新型封堵装置。
