Safe placement of proximal tibial transfixation wires with respect to intracapsular penetration.

Objectives: To determine the safe zone for transfixation wires in the proximal tibia to avoid intracapsular penetration.

Methods: The material consisted of five fresh cadaver knees (two paired) and seven knees of volunteer subjects (three paired). High-resolution magnetic resonance imaging (MRI) was performed on each knee after distension with a gadolinium solution.

Utility of low mA 1.5 pitch helical versus conventional high mA abdominal CT.

The objective of this study was to evaluate the utility of a low mA 1.5 pitch helical versus conventional high mA conventional technique in abdominal computed tomography (CT). Twenty-five patients who had both a conventional high mA (> 300) and a 1.

Spatial variation of T2 in human articular cartilage.

Purpose: To determine the spatial variation of in vivo cartilage T2 in young asymptomatic adults.

Materials And Methods: Quantitative T2 maps of seven asymptomatic young male adults and one male volunteer with a history of previous intraarticular chondroid fragments were calculated by using a multiecho, spin-echo magnetic resonance imaging sequence at 3.0 T.

Current concepts and controversies in imaging of renal cystic diseases.

Renal cystic disease compromises a diverse group of inherited and acquired entities. This article reviews the clinical, pathologic, and radiologic findings of eight renal cystic diseases. For each entity, the current concepts of pathogenesis and pathophysiology are discussed.

Renal cystic diseases.

Renal cystic disease comprises a mixed group of heritable, developmental, and acquired disorders. Because of their diverse etiology, histology, and clinical presentation, no single scheme of classification has gained acceptance. Conditions include autosomal dominant polycystic kidney disease, acquired renal cystic disease, medullary sponge kidney, autosomal recessive polycystic kidney disease, multicystic dysplastic kidney, medullary cystic disease, tuberous sclerosis, cysts of the renal sinus, and von Hippel-Lindau's disease.