Monitoring Neoadjuvant Chemotherapy Response in Breast Cancer Patients Using Diffuse Optical Spectroscopic Imaging

Participants will have up to 9 DOSI scans at 6 different time points during the course of their neoadjuvant chemotherapy. The time course of chemotherapy may vary between 3-9 months depending on the type chemotherapy subjects receive. Depending on chemotherapy schedule, subjects may or may not be asked to participate in all the 6 measurement time points. The number of DOSI scans each subject requires will be decided during consent. Each DOSI scan will take about 30-60 minutes, although scans at infusion time point will take longer in total due to repeated or continuous measurements.

Participants will have 1 DOSI scan at baseline. The DOSI scan will take about 30-60 minutes.