Picture 4 (IMAGE) Boston University Caption This handheld scanner is moved over breast tissue to monitor how well breast cancer tumors respond to chemotherapy or radiation treatment. Photos by Jackie Ricciardi. Credit Photos by Jackie Ricciardi. Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.