Shawn Fitzgerald

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Knowledge of the extent and location of viable tissue is important to clinical diagnosis. In principle, sodium (23Na) and potassium (39K) MRI could noninvasively provide information about tissue viability. In practice, imaging of these nuclei is difficult because, compared with water protons (1H), 23Na and 39K have lower MR sensitivities (9.2 and 0.051%,(More)
The tendon of the long head of the biceps muscle (long bicipital tendon) has a complex course from its muscle belly to its insertion onto the supraglenoid tubercle/glenoid labrum. It is stabilized by numerous tendinous and ligamentous structures and is, in turn, partly responsible for maintenance of normal glenohumeral function. In this report we describe(More)
The evaluation of loose bodies in the elbow is usually done by means of clinical examination, radiography, and postarthrographic computed tomography (CT). The authors review their experience with magnetic resonance (MR) imaging in place of post-arthrographic CT for the evaluation of loose bodies in the elbow. The prospective interpretation of MR studies of(More)
Magnetic resonance (MR) imaging can provide important diagnostic information in the evaluation of the adult elbow. Optimal imaging technique should include the use of proper positioning, surface coils, and appropriate sequences and imaging planes as indicated by the suspected abnormalities. A familiarity with the anatomy of the normal elbow is crucial to(More)
Testing was performed on a data acquisition (DAQ) system that was built specifically to characterize a new ultracompact superconducting isochronous cyclotron (USIC) at MIT. A production model of Nitrogen-13 was validated by experiment at Massachusetts General Hospital. Both absolute and relative activity calculations were conducted utilizing an original(More)
A new model concerning the concepts of host nation security force development, or security sector reform (SSR), is proposed. This model is rooted in scholarly literature and seeks to fill current gaps in United States Army doctrine. The model is mobilized as a dependent variable, changing with different conditions of insurgency and ethnicity. This is a(More)
With an understanding of the normal anatomy of the elbow and a pertinent clinical history, MR imaging of the elbow need not be a source of fear and confusion for the MR radiologist. Because positioning and scan planning are not as straightforward as they are with other joints such as the knee or shoulder, these processes can be time-consuming. The position(More)
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