Coil embolization of a lumbar artery to control vascular injury during intradiscal surgery.

Study Design: Case study.

Objective: To emphasize the role that interventional radiology can perform in stemming bleeding to vascular structures injured during spine surgery without altering patient position.

Summary And Background Data: Injury to the lumbar artery or aorta may occur during lumbar disc surgery.

SPECT quantification of [123I]iomazenil binding to benzodiazepine receptors in nonhuman primates: I. Kinetic modeling of single bolus experiments.

The aim of this work was to study the feasibility and reproducibility of in vivo measurement of benzodiazepine receptors with single photon emission computerized tomography (SPECT) in the baboon brain. Arterial and brain regional activities were measured for 420 min in three baboons after single bolus injection of the benzodiazepine antagonist [123I]iomazenil. Data were fit to a three-compartment model to derive the regional binding potential (BP), which corresponds to the product of the receptor density, (Bmax) and affinity (1/KD).

Recent advances in pediatric musculoskeletal imaging.

The current role of ultrasound, computed tomography, magnetic resonance imaging, and scintigraphy in the evaluation of pediatric musculoskeletal disorders is reviewed. Magnetic resonance imaging and ultrasound, which do not utilize ionizing radiation and, as far as is known, appear to have no deleterious biologic effects, are particularly valuable modalities in the pediatric population.