BACKGROUND AND PURPOSE The aim of this study was to investigate the regional differences in the in vivo vasodilator responses to vasopressin, which is thought to stimulate the release of nitric oxide from the endothelium, in canine cerebral arteries by angiography. METHODS Angiograms were performed through a catheter inserted directly into the right vertebral artery and were taken periodicall...

BACKGROUND This work aimed to evaluate the efficacy of virtual reality (VR) technology in neurosurgical anatomy through a comparison of the virtual 3D microanatomy of the suboccipital vertebral arteries and their bony structures as part of the resection of tumors in the craniovertebral junction (CVJ) of 20 patients compared to the actual microanatomy of the vertebral arteries of 15 cadaveric he...

OBJECTIVE To investigate the involvement of arteries other than the temporal arteries in active giant cell arteritis using color Doppler sonography. METHODS The occipital, facial, vertebral, carotid, subclavian, axillary, brachial, ulnar radial, femoral, popliteal, posterior tibial, and dorsal pedal arteries, and the abdominal aorta of 33 consecutive patients with acute giant cell arteritis a...

Our goal was to evaluate whether contrast-enhanced three-dimensional MR angiography using the MR Smartprep technique would enable us to obtain arterial-phase MR angiograms of the carotid and vertebral arteries. The study included 35 patients with suspected lesions of the neck in whom the MR Smartprep technique was used for MR angiography performed with a 1.5-T superconducting system. The tracke...

BACKGROUND Electrocardiographic abnormalities and clinical symptoms are used as indications for cardiac pacing. Syncope, faints and other neurological symptoms are of multi-factorial origin and are due to reduced brain perfusion. AIM To examine the carotid and vertebral artery blood flow and to assess whether stenosis of these arteries is associated with symptoms of cerebral hypoperfusion in ...

The angiographic demonstration of an occluded vertebral artery in a patient with a brain-stem syndrome was first reported by Riechert in 1952, and similar cases have been described by various authors subsequently. The common site of the vertebral occlusion was in the area between the arch of the atlas and the junction of the vertebral arteries. Since routine brachial angiography has been initia...

Duplication of the left vertebral artery was observed in a 43-year-old Caucasian male with dissection of the right internal carotid artery during multidetector 64-row computer tomography and Doppler ultrasonography B-flow mode. Both duplicated segments arose from the left subclavian artery and united at levels C5-C6 to form a single vessel. The presented case describes precisely the origin and ...

Pediatric polyarteritis nodosa is rare systemic necrotizing arteritis involving small- and medium-sized muscular arteries characterized by aneurysmal dilatations involving the vessel wall. Aneurysms associated with polyarteritis nodosa are common in visceral arteries; however intracranial aneurysms have also been reported and can be associated with central nervous system symptoms, significant m...

BACKGROUND AND OBJECTIVES: Osteopathic manipulation is indicated for pain, myofascial tensions and/or decreased movement amplitude. This study aimed at checking whether osteopathic manipulation with cervical rhythmic articulatory technique generates abnormal blood flow velocity oscillations or risks to internal carotid, vertebral and basilar arteries circulation. METHODS: The sample was made up...

In giant cell arteritis (GCA), involvement of the vertebral arteries is rare with reported rates of 3%-4% for ischemic events secondary to vertebral artery stenosis or occlusion for those patients with GCA. This case study describes a patient who initially presented with acute onset of vertigo but was also found to have transient, side-alternating upper limb neurological findings. While initial...