Questions and statements. The left side flowchart shows how many questions were generated within each domain. Each question generated at least 1 statement. Two questions were moved from “clinical actions” to “information” and “clinical trials” after discussion. Three classes of statements were elaborated: background, good clinical practice, and research statements. The right side of the figure shows how many statements were generated and their typology. The figure outlines the full process of the present project. Three domains were initially identified: the “information” domain addressed RT epidemiology, diagnosis, and prognosis; the “clinical actions” domain addressed RT testing, prognostication, and staging; and the “clinical trials” domain addressed clinical trials for patients with RT. Within the 3 domains, 12 subdomains were identified, which led to 40 clinical questions. The clinical questions were answered by 40 statements classified as “background” (9), “good clinical practice” (9), or “research” (22) statements, according to GRADE (grades of recommendation, assessment, development, and evaluation) classification. One or more Delphi consensus rounds allowed the group to reach agreement on the listed statements. Moreover, 16 corollary “remarks” completed the list of statements.