Anatomical study of pericardioperitoneal canal in immature beluga (Huso huso) with ultrasonography.

Background: One of the special anatomical structures in sturgeons is the pericardioperitoneal canal (PPC), which has not been studied much. Considering that the presence and absence of this channel and its morphometry have not been investigated in this type of fish, this study was conducted.

Objective: The purpose of present study was to obtain a complete understanding about anatomical features and ultrasonography of PPC in the heart of immature beluga species in order to provide standard approaches for performing sonography and echocardiography on this sturgeon species.

CT anatomy and normal radiography of the skull of the Rhesus monkey (Macaca mulatta).

Background: Considering the relationship between human morphology and physiology with the Rhesus monkey, this animal is the most prominent species of laboratory primate for human and animal health research. Moreover, sending Macaca mulatta monkey into space and simulating a living environment for humans shows the similarity of this animal's physiology with humans.

Objective: So far, no comprehensive study has been done on computed tomography (CT) scan and radiography of skulls in Rhesus monkeys.