Ultrasonography is widely used in veterinary medicine for the diagnosis of pregnancy, and can also be used to monitor abnormal pregnancies, embryonic resorption, or fetal abortion. Ultrasonography plays an important role in modern-day cetacean preventative medicine because it is a non-invasive technique, it is safe for both patient and operator, and it can be performed routinely using trained responses that enable medical procedures. Reproductive success is an important aspect of dolphin population health, as it is an indicator of the future trajectory of the population. The aim of this study is to provide additional relevant data on feto-maternal ultrasonographic monitoring in bottlenose dolphin (Tursiops truncatus) species, for both the clinicians and for in situ population studies. From 2009 to 2019, serial ultrasonographic exams of 11 healthy bottlenose dolphin females kept under human care were evaluated over the course of 16 pregnancies. A total of 192 ultrasound exams were included in the study. For the first time, the sonographic findings of the bottlenose dolphin organogenesis and their correlation with the stage of pregnancy are described. Furthermore, this is the first report that forecasts the cephalic presentation of the calf at birth, according to its position within the uterus.

中文翻译：

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怀孕和胎儿发育：人类护理下临床健康的宽吻海豚（Tursiops truncatus）的头颅表现和其他描述性超声检查结果。

超声在兽医学中广泛用于诊断妊娠，也可用于监测异常怀孕，胚胎吸收或胎儿流产。超声检查在现代鲸类预防医学中起着重要的作用，因为它是一种非侵入性技术，对患者和操作者都是安全的，并且可以使用经过培训的响应程序进行常规检查，以实现医疗程序。繁殖成功是海豚种群健康的重要方面，因为它是种群未来轨迹的指标。这项研究的目的是提供有关宽吻海豚胎儿母亲超声检查的其他相关数据（Tursiops truncatus），供临床医生和就地种群研究使用。从2009年到2019年，在16例怀孕过程中，对11例健康的宽吻海豚雌性进行了连续的超声检查，以进行人类护理。这项研究总共进行了192次超声检查。首次描述了宽吻海豚器官发生的超声检查结果及其与妊娠阶段的相关性。此外，这是根据小牛在子宫中的位置预测小牛出生时头侧表现的第一份报告。