Change in Detection Method Over Time (image) Radiological Society of North America Share Print E-Mail Caption This bar graph shows the change in detection method over time (1990-2011) for breast cancer cases in patients aged 75 years and older (n = 1162). Pt/PhysD = detection by patient or physician. Credit Radiological Society of North America Usage Restrictions May use with credit. 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.