{"denomUnitsSelected":"Participants","description":"For patients who demonstrate a local failure during follow-up, a computed tomography (CT), positron emission tomography (PET)/CT, or magnetic resonance imagine (MRI) scan is fused with the original treatment planning CT scan using the computational environment for radiation research (CERR) developed at Washington University Medical Center. The methodology to transfer the digital imaging study via network to the radiation therapy research servers is mature. The original dose distribution and contours are correlated with the recurrent disease noted on the follow up imaging study. The recurrence is then classified as infield, marginal to the treatment field, or out of the treatment field depending on the dose received by the recurrent disease. Failures that occur in the treatment field are due to aspects of tumor biology rather than errors in the volume irradiated. As has been the case in our historical controls, the investigators expect most failures to be in the treatment field.","reportingStatus":"NOT_POSTED","timeFrame":"Completion of follow-up (minimum of 5 years from completion of treatment)","title":"Patterns of Failure Associated With Implementation of Primary Objective","type":"SECONDARY"}