spinal stereotactic radiotherapy coplanar and non coplanar intensity modulated radiotherapy polyenergetic kilovoltage x ray beams beam directions of two beam a and six radiation oncology in the era of visual computing in radiation therapy small animal radiotherapy research planning target volume margin expansion lung cancer planning treatment outcomes treatment of lung cancer patients proton therapy for prostate cancer planar kv midimaging with cbct radiation oncology biology guided radiotherapy optimizing 4d cone beam ct acquisition spine stereotactic radiotherapy optimization of collimator angles in intensity modulated radiation therapy emerging technologies in radiotherapy magnetic resonance imaging mri guided combining external beam radiation and novel rotatable tabletop for total adaptive radiotherapy the ta unity flash radiotherapy treatment planning volumetric modulated arc therapy external beam radiotherapy bravo patient rotation enables fixed beam volumetric modulated arc therapy converging beam radiotherapy fast imrt by increasing the beam number stereotactic prostate radiotherapy ta mlc beam modulator proton flash radiation therapy lung stereotactic ablative radiotherapy transfer of minibeam radiation therapy varian edge radiosurgery system optimal collimator rotation based on neck cancers using radiotherapy ctv to ptv margin sment for stereotactic radiosurgery with hyperarc slron external beam radiotherapy ebrt intensity modulated radiation therapy adaptive radiotherapy the ta unity intracranial stereotactic radiation dosimetry of photon beams in a patient visual computing in radiation therapy intensity modulated radiotherapy helical tomotherapy comparison of hi intensity modulated radiotherapy