HEART MEASUREMENTS OF NON-HUMAN PRIMATES BY RADIOGRAPHIC TECHNIQUES

Abstract Thoracic Radiology is a diagnostic technique used to study several aberrations, including cardiac abnormalities, which can be determined by VHS (vertebral heart size). The heart length and width are measured, and the CTR (cardiothoracic ratio) is calculated, by comparing the heart width to the thoracic diameter. This study aimed at measuring the cardiac silhouette of non-human primates (PNH) belonging to the genus Sapajus sp., and the Alouatta guariba species through VHS and CTR. From among the eight animals assessed, it was evident that in both the Sapajus sp. and the Alouatta guariba, the highest HSV change index was observed, depending upon the age of the animal. However, although the individuals of the Alouatta guariba species are bigger in size and heavier, the animals of the genus Sapajus sp. have a larger heart size in proportion to their body.摘要：胸部放射学（Thoracic Radiology）是一类用于探究多种异常状况的诊断技术，其中包括可通过椎体心脏尺寸（vertebral heart size, VHS）识别的心脏异常。研究人员通过测量心脏的长径与宽径，并计算心脏宽径与胸廓直径的比值得到心胸比（cardiothoracic ratio, CTR），以此开展相关评估。本研究旨在通过VHS与CTR两项指标，对隶属于卷尾猴属（Sapajus sp.）与瓜伊巴吼猴（Alouatta guariba）物种的非人灵长类（non-human primates, PNH）的心脏轮廓进行测量。本次研究共纳入8只受试动物，结果表明，无论是卷尾猴属物种还是瓜伊巴吼猴，其最高的VHS变化指数均与动物年龄相关。尽管瓜伊巴吼猴个体的体型与体重均更大，但卷尾猴属动物的心脏尺寸相对于其躯体比例却更大。