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Abstract #0227

Contrast-enhanced Ultrashort Echo Time (UTE) MR of the chest to evaluate for metastatic nodules in pediatric patients with malignancy undergoing abdomen MR staging and surveillance: a high-value alternative or adjunct to CT

Anshul Haldipur1, Evan James Zucker1, Joseph Y. Cheng1, and Shreyas S. Vasanawala1

1Radiology, Stanford University, Stanford, CA, United States

Ultrashort Echo Time (UTE) MRI of the chest can be optimized for detection of metastatic lung nodules. In pediatric patients with a history of abdominal malignancies undergoing routine re-staging contrast-enhanced MRI exams, clinically significant metastatic lung nodules are detectable which, if diagnosed, could obviate or decrease the frequency of subsequent separate CT scans of the chest. Though cost of a chest CT is lower than an MRI, it is substantially more than the incremental cost of adding an additional sequence during already-scheduled MR Abdomen exams. Additionally, ionizing radiation is avoided, alleviating concerns about cumulative exposure following multiple serial follow-up examinations.

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