Abstract #3357
T1 Rho and ADC Mapping of Brain Tumors and Tumor-Related Edema
Javier Villanueva-Meyer 1 , Ramon Barajas 1 , Marc Mabray 1 , Igor Barani 2 , and Soonmee Cha 1
1
Radiology and Biomedical Imaging, University
of California - San Francisco, San Francisco,
California, United States,
2
Radiation
Oncology, University of California - San Francisco, San
Francisco, California, United States
Conventional MR techniques are inaccurate in
differentiating and quantifying peritumoral vasogenic
edema associated with brain metastases from infiltrative
edema in the setting of primary glial tumors. We
evaluated the use of quantitative T1 rho and ADC mapping
to differentiate between these two types of
tumor-related edema. We found significantly elevated T1
rho and ADC values in the peritumoral edema of
intracranial metastases compared to gliomas. Our
preliminary study demonstrates the feasibility and
potential role of 3D T1 rho imaging in the quantitative
assessment of edema related to intracranial tumors.
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