Roger P Tart

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The authors describe the normal variations in the buccal space and present the range of buccal space pathologic conditions seen on computed tomographic (CT) and magnetic resonance (MR) images. In a series of 50 patients studied with CT and 30 with MR imaging, the visualization and measurement of the normal facial expression and buccinator muscles,(More)
PURPOSE To present the expected appearance of the irradiated larynx and neck as seen at computed tomography (CT). MATERIALS AND METHODS Sixty-one patients with primary squamous cell carcinoma of the larynx or hypopharynx were treated with radiation therapy. All patients underwent CT before and after treatment. RESULTS Expected changes include symmetric(More)
PURPOSE To determine whether sclerosis of the laryngeal cartilages was a predictor of a poor outcome in patients with stage T3 glottic cancer treated with radiation therapy. MATERIALS AND METHODS Thirty-three patients with stage T3 glottic cancer underwent computed tomography (CT) before radiation therapy. Twenty-two patients underwent posttreatment CT.(More)
Until recently all callosal lipomas were grouped together. However, these lipomas can be clearly separated into two groups having different morphologies and associated brain anomalies. One group consists of anteriorly situated round or cylinder-shaped lipomas, termed tubulonodular. These lipomas are generally greater than 2 cm in diameter and have a high(More)
OBJECTIVE We present the spectrum of CT and MR findings of first branchial anomalies (FBAs) in our 10 year experience and attempt to integrate these anomalies into current classification systems. MATERIALS AND METHODS The hospital charts and all relevant imaging studies were retrospectively reviewed in 11 patients with pathologically proven FBAs.(More)
PURPOSE To compare T2-weighted fat-suppressed fast spin-echo imaging with fat-suppressed conventional spin-echo imaging in the detection of normal intraorbital and pericavernous anatomy and orbital disease, and to determine the efficacy of fat saturation with T2-weighted fast spin-echo imaging of the cavernous sinus. METHODS Contrast-to-noise ratios of(More)
BACKGROUND Little information about the incidence of retropharyngeal adenopathy and its impact on prognosis has been published. METHODS For 774 patients with squamous cell carcinoma of the nasopharynx, oropharynx, hypopharynx, or supraglottic larynx, pretreatment CT and, in selected cases, MRI scans were reviewed to determine the presence of(More)
Facial lymph node involvement by neoplastic disease is an unusual occurrence. The purpose of this study was to determine the normal and abnormal radiologic appearance of the facial nodes. Two hundred enhanced computed tomographic (CT) studies of patients not at risk for facial node metastasis were studied prospectively to establish a normal control group.(More)
BACKGROUND AND PURPOSE Evaluation of images of perineural tumor spread in patients with head and neck malignancies is essential for planning treatment and determining the patient's prognosis. Although the communications between the facial and trigeminal nerves are not widely known, they may provide a route for tumor growth. The purpose of this study was to(More)
OBJECTIVE Our goal was to prospectively compare dynamic CT (DCT) and spiral CT (SCT) for evaluating patients with suspected abnormalities of the glottic region and correlate the observed differences between the two techniques with phantom measurements. MATERIALS AND METHODS Thirty-one patients suspected of having laryngeal abnormalities underwent DCT and(More)