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Abstract #0456

High Spatio-Temporal Resolution Breast Dynamic Contrast Enhanced MRI at 3T

Manojkumar Saranathan1, Dan W. Rettmann2, Brian A. Hargreaves3, Jafi Lipson3, Bruce Daniel3

1Radiology, Stanford University, Stanford, CA , United States; 2Global Applied Science Laboratory, GE Healthcare, Rochester, MN, United States; 3Radiology, Stanford University, Stanford, CA, United States

Dynamic-contrast enhanced (DCE) MRI is the primary approach for clinical breast imaging but is beset by the need for both high spatial and high temporal resolution [1-2], often resulting in suboptimal compromises. High temporal resolution is required for quantitative pharmacokinetic modeling whereas high spatial resolution is necessary for clear delineation of tumor morphology. We present clinical results from 20 patients of a new variable spatio-temporal resolution technique that seamlessly switches between the high temporal and high spatial resolution modes. Bilateral coverage with 0.9x0.9x1.2 mm spatial resolution was achieved, with the two modes having a temporal resolution of ~9s and ~120s respectively

Keywords

ability absence acceleration achieved acquisition annuli annulus applied approx array artifacts axial bilateral bipolar blinded blurriest blurring breast called cancer carcinoma central clear clinical closely coil comp contrast coverage curves datasets delays developed differential disco dual dynamic eliminated enhanced errors expert fast fully function future generate global guidelines improved informed injection inner inside institution invasive isotropic laboratory last margins masses matched matrix middle missing mode modeling modes morph nearest necessary need note often outer pace panel pares particularly patient patients perceived plotted poorly post primary proposed protocol pseudo radiology random ranked ranking readout reduce reduction reliable replacing representative residual resolution respectively ringing robust sampled scale scanned scheduling schemes seam seamlessly section sharing sharper sign significance slab space spatial spread suboptimal supplied suppression switch switches system tailed temporal thick touch tumor type uniform uptake useful variable view washout water white