This practical guide provides radiation oncologists with clear, practical guidelines for delineating target volumes and radiation fields for a diverse group of hematologic malignancies. The treatment fields and volumes described in this guide can be used when treating with conformal therapies, such as intensity-modulated radiotherapy (IMRT) and/or proton therapy. Each chapter focuses on clinical target volume (CTV) contouring for specific hematologic malignancies, including lymphomas, leukemias and plasma cell neoplasms. Since target volumes can be complex in certain clinical circumstances, each chapter includes multiple, detailed illustrations of the volumes in representative cases contoured slice by slice in the planning CT images, with accompanying diagnostic images that are commonly used in image fusion.  The book will be a valuable resource for practicing radiation oncologists, medical physicists, medical dosimetrists, residents, radiation therapists and other medical professionals.