MR quantification of the washout changes in breast tumors under preoperative chemotherapy: feasibility and preliminary results.

Objective: The objective of our study was to describe and determine the feasibility of an MR washout quantification method in patients with breast cancer under preoperative chemotherapy.

Materials And Methods: Nineteen patients with breast T2 or T3 tumors were enrolled in a previous study for tumor response evaluation during chemotherapy based on dynamic contrast-enhanced MRI. We retrospectively used the dynamic acquisition data to produce parametric images representing the washout pattern.