ECG-Gated Cardiac Multidetector CT Evaluation of the Normal Pulmonary Valve and Right Ventricular Outflow Tract in Dogs.

IF 1.3 2区 农林科学 Q2 VETERINARY SCIENCES
Chiara Massarenti, Marta Croce, Alessia Diana, Massimiliano Tursi, Eric Zini, Oriol Domenech, Edoardo Auriemma
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Abstract

With the advancement in imaging technology, ECG-gated cardiac multidetector computed tomography (MDCT) has emerged as a tool for the anatomic evaluation of the pulmonary valve and right ventricular outflow tract (RVOT) in human medicine. Currently, the evaluation of the pulmonary valve relies primarily on echocardiographic examination. However, the bi-dimensional nature of this technique and the location/orientation of the pulmonary valve in the thoracic cavity can pose challenges. In human medicine, ECG-gated MDCT distinguishes four main anatomic components of the pulmonary valve and RVOT: the pulmonary valve leaflets, the sinotubular junction, the anatomic ventriculo-arterial junction and the hemodynamic ventriculo-arterial junction. Hence, this study aimed to describe the computed tomographic findings of the normal RVOT and pulmonary cusps in a population of dogs. This is an anatomic prospective descriptive study. A total of 24 dogs underwent a complete echocardiographic examination and an ECG-gated MDCT to rule out pulmonary valve abnormalities. Multiplanar reconstruction of the pulmonary valve was obtained. Additionally, hearts from three dogs euthanized for reasons unrelated to the study were collected and their gross and histological findings were compared with the CT images. The ECG-gated MDCT provided good visualization of the pulmonary valve leaflets, the sinotubular junction, the anatomic ventriculo-arterial junction and the hemodynamic ventriculo-arterial junction. Notably, the short-axis view of the pulmonary valve anatomy resembled the 'Mercedes-Benz sign' characteristic of the aortic valve in all dogs. In conclusion, this study provides the first description of the CT anatomy of the RVOT in dogs without pulmonary valve and RVOT abnormalities.

心电图门控心脏多层螺旋CT对犬正常肺动脉瓣和右心室流出道的评价。
随着成像技术的进步,心电图门控心脏多探测器计算机断层扫描(MDCT)已成为人类医学中肺动脉瓣和右心室流出道(RVOT)解剖评价的工具。目前,对肺动脉瓣的评价主要依靠超声心动图检查。然而,这种技术的二维特性和肺动脉瓣在胸腔中的位置/方向可能会带来挑战。在人类医学中,心电图门控MDCT区分了肺动脉瓣和RVOT的四个主要解剖组成部分:肺动脉瓣小叶、窦小管交界处、解剖性心室动脉交界处和血流动力学性心室动脉交界处。因此,本研究旨在描述一群狗正常RVOT和肺尖的计算机断层扫描结果。这是一项解剖学前瞻性描述性研究。共有24只狗接受了完整的超声心动图检查和心电图门控MDCT检查,以排除肺瓣膜异常。获得了肺动脉瓣的多平面重建。此外,收集了三只因与研究无关的原因而被安乐死的狗的心脏,并将其大体和组织学结果与CT图像进行了比较。心电图门控MDCT能很好地显示肺动脉瓣小叶、窦小管交界处、解剖性心室动脉交界处和血流动力学性心室动脉交界处。值得注意的是,肺动脉瓣解剖的短轴视图与所有犬主动脉瓣的“梅赛德斯-奔驰征”特征相似。总之,本研究首次描述了无肺动脉瓣犬RVOT的CT解剖和RVOT异常。
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来源期刊
Veterinary Radiology & Ultrasound
Veterinary Radiology & Ultrasound 农林科学-兽医学
CiteScore
2.40
自引率
17.60%
发文量
133
审稿时长
8-16 weeks
期刊介绍: Veterinary Radiology & Ultrasound is a bimonthly, international, peer-reviewed, research journal devoted to the fields of veterinary diagnostic imaging and radiation oncology. Established in 1958, it is owned by the American College of Veterinary Radiology and is also the official journal for six affiliate veterinary organizations. Veterinary Radiology & Ultrasound is represented on the International Committee of Medical Journal Editors, World Association of Medical Editors, and Committee on Publication Ethics. The mission of Veterinary Radiology & Ultrasound is to serve as a leading resource for high quality articles that advance scientific knowledge and standards of clinical practice in the areas of veterinary diagnostic radiology, computed tomography, magnetic resonance imaging, ultrasonography, nuclear imaging, radiation oncology, and interventional radiology. Manuscript types include original investigations, imaging diagnosis reports, review articles, editorials and letters to the Editor. Acceptance criteria include originality, significance, quality, reader interest, composition and adherence to author guidelines.
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