Parathyroid 4D CT and Scintigraphy: What Factors Contribute to Missed Parathyroid Lesions?

Objective: To determine the prevalence of missed lesions for parathyroid 4-dimensional computed tomography (4D CT) and scintigraphy and to describe the factors leading to missed lesions for both modalities.

Study Design: Case series with chart review.

Setting: Single center, hospital based.

Superficial temporal artery: the "C" shape half-buttonhole configuration as it courses over the zygomatic arch.

Purpose: To describe the course and configuration of the superficial temporal artery (STA) around the zygomatic arch.

Methods: Volume rendered 3D reconstructions of computed tomography angiography of 25 healthy patients were performed and analyzed at Duke University Hospitals.

Results: The STA coursed over the zygomatic arch or over the condylar process of the mandible in all cases (25/25 pts, 100 %).

Imaging thyroid disease: updates, imaging approach, and management pearls.

There are many disorders that can occur in the thyroid gland, ranging from benign to malignant entities. This article focuses on 5 common problems of the thyroid that require special consideration with regard to optimizing imaging strategies in a multidisciplinary and collaborative platform. These problems are the incidental thyroid nodule, preoperative evaluation of goiter, hyperthyroidism, invasive thyroid cancer, and recurrent thyroid cancer.

Umbilical cord blood transplantation to treat Pelizaeus-Merzbacher Disease in 2 young boys.

Pelizaeus-Merzbacher Disease (PMD) is a rare X-linked recessive leukodystrophy caused by mutations in the proteolipid protein 1 gene on the Xq22 chromosome. PMD is a dysmyelinating disorder characterized by variable clinical presentation and course. Symptoms range from mild motor deficits to progressive spasticity and neurologic decline resulting in death at an early age.

Informatics in radiology: evaluation of an e-learning platform for teaching medical students competency in ordering radiologic examinations.

A preliminary audit of orders for computed tomography was performed to evaluate the typical performance of interns ordering radiologic examinations. According to the audit, the interns showed only minimal improvement after 8 months of work experience. The online radiology ordering module (ROM) program included baseline assessment of student performance (part I), online learning with the ROM (part II), and follow-up assessment of performance with simulated ordering with the ROM (part III).

High incidence of osteoporosis and fractures in an aging post-polio population.

Background/aims: Since the polio epidemic in Ireland in the 1950s, most polio survivors are approaching into the 6th and 7th decade of their lives. There is little data about bone density and risk of fractures in these patients. In 2006, we undertook an audit of post-polio patients attending rheumatology and neurology outpatient clinics in a university teaching hospital.