Soft tissue mycetoma: "Dot-in-circle" sign on magnetic resonance imaging.

A 36-year-old Mexican female with a slowly growing foot mass was referred to orthopedic surgery clinic for further evaluation. Foot magnetic resonance imaging revealed an infiltrative soft tissue mass along the dorsal aspect of the fourth metatarsal. T2-weighted images revealed multiple central low-signal "dots" surrounded by areas of bright signal intensity, known as the "dot-in-circle" sign, which is highly specific for mycetoma.

Radiation dose reduction for musculoskeletal computed tomography of the pelvis with preserved image quality.

Objective: To analyze the impact of pelvic computed tomography (CT) technique optimization on estimated dose and subjective and objective image quality.

Materials And Methods: An institutional review board (IRB)-approved retrospective records review was performed with waived informed consent. Five CT scanners (various manufacturers/models) were standardized to match the lowest dose profile on campus via subjective assessment of clinical images by experienced musculoskeletal radiologists.

Magnetic Resonance Neurography of the Pelvic Nerves.

Chronic pelvic pain syndrome is commonly caused by nerve injury, inflammation, or entrapment. Owing to the complex anatomy and branching patterns of pelvic nerves, pelvic neuropathies are often difficult to illustrate and diagnose. High-resolution 3-T magnetic resonance neurography is a promising technique for the evaluation of peripheral neuropathy.

Role of Diffusion Weighted Imaging in Musculoskeletal Infections: Current Perspectives.

Unlabelled: Accurate diagnosis and prompt therapy of musculoskeletal infections are important prognostic factors. In most cases, clinical history, examination and laboratory findings help one make the diagnosis, and routine magnetic resonance imaging (MRI) is useful to identify the extent of the disease process. However, in many situations, a routine MRI may not be specific enough especially if the patient cannot receive contrast intravenously, thereby delaying the appropriate treatment.