Jonathan A. Chatzkel

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We report the use of susceptibility-weighted imaging (SWI) in detection of red nucleus (rubral) degeneration and atrophy in children with hypertrophic olivary degeneration (HOD) after posterior fossa tumor resection. The use of this modality for this particular application has not been previously described. Detection of red nucleus changes seems to be(More)
RATIONALE Multiple causes for air trapping as identified by expiratory computed tomography (CT) have been reported, but a unified evaluation schema has never been proposed. OBJECTIVES It was our purpose to identify imaging features that would help distinguish etiologies of mosaic air trapping. METHODS Cases with the term "air trapping" in the radiology(More)
Determine if highly proliferative head and neck squamous cell carcinomas, assessed by pretreatment Ki-67 expression, respond more robustly to induction chemotherapy (IC) that is selectively toxic to cycling cells. Retrospective analysis of 59 patients treated with IC and chemoradiation. IC included either nab-paclitaxel, cisplatin, 5-FU and cetuximab(More)
A 15-year-old girl presented with ataxia and dysmetria 7 days after beginning treatment with metronidazole for Crohn disease. MRI revealed bilateral symmetric T2/ FLAIR hyperintense lesions of the dentate nuclei (Fig. 1). The lesions did not show contrast enhancement or restricted diffusion. No other lesions were seen. The lesions resolved completely after(More)
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