Bovine Arch and Stroke Laterality.

Background Left-hemispheric strokes are more frequent and often have a worse outcome than their right-hemispheric counterparts. This study aimed to evaluate whether cardioembolic stroke laterality is affected by anatomical characteristics of the aortic arch. We hypothesized that laterality varies between patients with bovine versus standard arch.

Endovascular transvenous embolization of sinus pericranii. Case report.

Sinus pericranii (SP) is an abnormal communication between the intra- and extracranial venous drainage pathways. Treatment of this condition has mainly been recommended for reasons of cosmesis and prevention of hemorrhage. The authors report a novel endovascular transvenous route for definitive treatment of SP.

Computed tomography-guided lumbar drain placement.

The authors describe a technique for lumbar drain placement using CT guidance. Midline or paramidline interlaminar approaches to the thecal sac can be used. The major advantage to CT guidance is direct visualization of the needle tip in relation to the thecal sac.

Brain injury due to ventricular shunt placement delineated by diffusion tensor imaging (DTI) tractography.

Objective: Infection and hemorrhage are well-known complications from insertion of intracranial shunts. However, permanent injury to the brain caused by catheterization of the cerebral ventricles has rarely been reported.

Methods: We report a patient who presented at age 14 years for evaluation of a severe behavioral disorder.

CT-guided radiofrequency ablation in the palliative treatment of recurrent advanced head and neck malignancies.

Purpose: To evaluate the safety and effectiveness of computed tomography (CT)-guided radiofrequency (RF) ablation in the palliative treatment of recurrent advanced head and neck cancers.

Materials And Methods: From November 2002 to January 2005, the authors identified 14 patients (median age, 61 years) with 14 recurrent advanced primary head and neck malignancies who underwent 27 CT-guided RF ablation applications during 20 sessions at their institution. RF ablation was performed in all patients with the intent of palliative therapy.

Coronary sinus compression: an early computed tomographic sign of cardiac tamponade.

Objective: To determine retrospectively the distinguishing features of cardiac tamponade on conventional chest computed tomography (CT).

Materials And Methods: Blinded retrospective analysis of CT scans from 14 patients (6 women, 8 men; age range, 49-93 yrs; mean age, 71 yrs) with echocardiographic evidence of tamponade and 15 controls (11 women, 4 men; age range, 37-96 yrs; mean age, 66 yrs) without tamponade was performed by 3 cardiothoracic radiologists. Computed tomographic scans were analyzed for right ventricular flattening, contrast reflux into the azygos vein, and coronary sinus compression.

Chorea-acanthocytosis: a mimicker of Huntington disease case report and review of the literature.

Background: Neuroacanthocytosis consists of a group of rare heterogeneous neurodegenerative disorders associated with acanthocytosis. Chorea-acanthocytosis, a variety of neuroacanthocytosis, is an autosomal recessive condition with clinical and radiologic features similar to Huntington disease. Although difficult, distinguishing between these entities is crucial as the implications for genetic counseling are significant.