Crimping and repositioning of a maldeployed balloon-expandable arterial stent using a gooseneck snare.

Purpose: To describe a technique for repositioning a fully deployed iliac stent from the infrarenal aorta into the common iliac artery (CIA).

Case Report: A 58-year-old man was undergoing treatment for a significant right CIA stenosis when a 7x24-mm Palmaz Genesis medium stent was mistakenly deployed in the infrarenal aorta. With the stent still over the guidewire, an 8x60-mm balloon catheter was placed coaxially in the stent.

Helical CT of the small bowel with an alternative oral contrast material in patients with Crohn disease.

Background: We assessed the usefulness of helical computed tomography (CT) with a negative oral contrast material for detecting Crohn disease.

Methods: Thirty-eight patients with proven Crohn disease were examined. We administered a large volume of a new negative oral contrast material (Mucofalk suspended in water) and then proceeded with helical CT scanning.

Multiplanar spiral CT enterography in patients with Crohn's disease using a negative oral contrast material: initial results of a noninvasive imaging approach.

The aim of this study was to prospectively define the role of multiplanar spiral CT enterography with a new negative oral contrast material for noninvasive assessment of the small bowel in patients with Crohn's disease. Thirty patients with established Crohn's disease prospectively underwent spiral CT enterography at 45-60 min after distension of the small bowel with 1400 ml of a negative oral contrast material (Mucofalk water enema). Spiral CT scans were obtained 50 s after administration of intravenous contrast material with the following parameters: 5-mm collimation; 7.

Magnetic resonance imaging patterns of the development of the sphenoid sinus: a review of 800 patients.

Accurate knowledge of age-related development and pneumatisation of the paranasal sinuses has become an important issue in diagnosing paranasal sinus diseases in infants and young adults. Magnetic resonance imaging (MRI) has the potential to assess bone marrow conversion and pneumatisation of the paranasal sinuses. We retrospectively reviewed 800 children aged 0-14 years undergoing brain MRI for various indications.

Contrast-enhanced helical CT of the head and neck: improved conspicuity of squamous cell carcinoma on delayed scans.

Objective: We evaluated the impact of delayed scans on the conspicuity of squamous cell carcinoma in helical CT of the head and neck.

Subjects And Methods: Twenty-seven patients with biopsy-proven squamous cell carcinoma of the head and neck underwent dual-phase helical CT examinations using 100 mL of nonionic contrast material. In all patients, the early phase started 30 sec after the commencement of injection.

Peripheral primitive neuroectodermal tumour of the kidney: CT findings.

Peripheral primitive neuroectodermal tumour in the kidney is a rare entity with high malignant potential. The distinctive demographic, clinical and radiological findings, as described in the present case, should suggest this aggressive tumour in the differential diagnosis of renal neoplasms in adolescents.