CT Scan (image) Johns Hopkins Medicine Share Print E-Mail Caption CT scan of radiographic response for a patient at baseline and after 24 weeks of treatment. The sum diameter of his target lesions decreased by 52 percent at the time of his best response. Credit Johns Hopkins Kimmel Cancer Center Usage Restrictions None Share Print E-Mail 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.