'Madonna in Preghiera' (IMAGE) Georgia Institute of Technology Caption "Madonna in Preghiera" by the workshop of Giovanni Battista Salvi da Sassoferrato. The painting was studied using a terahertz reflectometry technique. Credit Courtesy of Alexandre Locquet Usage Restrictions None License Licensed content 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.