Neuroimaging clinics of North America
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The normal orbit arguably contains the most complex anatomy of the human body. The orbit's small size, complex anatomy, and elaborate function make it a diagnostic challenge to evaluate. ⋯ This article attempts to review and illustrate the normal anatomical structures that can be identified on CT and MR images. These structures include the bony orbit, globe and optic nerve, extraocular muscles, lid retractor system, fibrous tissue framework, vascular system, neural structures, and lacrimal system.
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Neuroimaging Clin. N. Am. · Feb 1998
Anatomy of the mandible, temporomandibular joint, and dentition.
This article provides an overview of the normal gross anatomy and physiology of the mandible, TMJ, as well as a working overview of normal dental anatomy. The appearances of a number of important anatomic structures and features on plain film, computed tomography, reformatted computed tomography, and magnetic resonance imaging studies are presented.
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Neuroimaging Clin. N. Am. · Nov 1997
ReviewClinical evaluation and management of aneurysmal subarachnoid hemorrhage.
As neuroradiologic techniques become more critical to the care of patients suffering from aneurysmal subarachnoid hemorrhage, a thorough understanding of the natural history and medical management of this disorder by neuroradiologists is required to insure appropriate diagnosis and therapy. This article addresses the medical and perioperative management of subarachnoid hemorrhage, with an emphasis on features relevant to neuroradiologic diagnosis and treatment.
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An estimated 1% to 5% of adults have a cerebral aneurysm. Each year, approximately 1 in 10,000 North Americans suffer an aneurysmal subarachnoid hemorrhage, with greater than 50% combined morbidity and mortality. Cerebral aneurysm formation and rupture is associated with a variety of factors, including increasing age, female gender, hypertension, alcohol, smoking, and genetic factors.
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For survivors of aneurysmal subarachnoid hemorrhage, cerebral vasospasm significantly contributes to its morbidity and mortality by causing delayed ischemic neurological deficit. Noninvasive evaluation with computed tomography, transcranial doppler and single photon emission computerized tomography helps guide clinical decisions. ⋯ Encouraging long-term clinical and transcranial artery damage following angioplasty. Despite balloon angioplasty's 2% to 5% peri-procedure mortality rate, it remains under used.