<prompt> Answer this question truthfullyCould you provide me with the current text that needs to be rephrased?  <response>: <reason> Pericardial changes are the most common cardiac complications of radiation therapy . Incidence of radiation-induced pericarditis has significantly decreased with the use of lower doses and newer radiotherapy techniques . In a study, incidence decreased from 20 to 2.5 with the changes in methods of RT administration In a study among pediatric population with various cancers, radiation therapy with 15 GY increased the risk of developing pericarditis by two to six times 