introduction: vertebral arteries arise from the root of the neck as the first branches from the superior-posterior aspect of the subclavian arteries. they ascend the neck to enter the cranial cavity and supply blood to the brain. methods: a total of 20 cadavers (in 10 years) were dissected for the study of variations in the origin of the vertebral artery. this study was conducted in isfahan uni...

51 Summary Introduction. During the last several decades there have been many new methods introduced for the treatment of lower limb chronic venous insufficiency (laser, foam, subendothelial and thermal coagulation methods). Venous system of lower limbs often presents anatomic variations including venous duplications. Knowledge of venous system variations in the lower limb area is of particular...

OBJECTIVES Analyze the anatomic variations of the testicular veins in human cadavers and fetuses. MATERIALS AND METHODS One hundred male adult cadavers and 24 fetuses were studied. Four anatomic aspects were considered: 1) Number of testicular veins, 2) The local of vein termination, 3) Type and number of collaterals present and 4) Testicular vein termination angle. RESULTS Cadavers - Right...

Neuroanatomic substrates of specific cognitive functions have been inferred from anatomic distributions of activated pixels during fMRI studies. With declarative memory tasks, interest has focused on the extent to which various medial temporal lobe anatomic structures are activated while subjects encode new information. The aim of this project was to examine how commonly used variations in fMRI...

Introduction. Mandibular premolars have been reported with complex anatomical aberrations, making them one of the most difficult teeth to manage endodontically. Methodology. An exhaustive search was undertaken to identify associated anatomic studies of mandibular premolars through MEDLINE/PubMed database using keywords, and a systematic review of the relevant articles was performed. Chi-square ...

OBJECTIVES To analyze the nasal superficial arterial vasculature and to compare these anatomic findings with the results of ultrasonography Doppler investigations to evaluate nasal blood flow in physiological and pathologic conditions. METHODS We performed 40 ultrasonography Doppler investigations in patient volunteers, 20 facial anatomic dissections in fresh cadavers, and a review of the lit...

We have analyzed anatomic variations in the pectoralis major and pectoralis minor muscles of common chimpanzees (Pan troglodytes) and bonobos (Pan paniscus) and compared them to anatomic variations in these muscles in humans (Homo sapiens). We have macroscopically dissected these muscles in six adult Pan troglodytes, five Pan paniscus of ages ranging from fetus to adult, and five adult Homo sap...

Volume rendering not only produces high quality 3D images of single organs directly from the intensity data in cr. MR, SPECf, PET, and ultrasound images, but it also can b:e used to show the relationship among multiple anatomic, treatment, and image objects. In this paper we will explain methods, show results, and discuss the effectiveness of 1. simultaneously volume rendering multiple organs f...