Conroy, Leigh Technical Note: Issues related to external marker block placement for deep inspiration breath hold breast radiotherapy. [electronic resource] - Medical physics Jan 2017 - 37-42 p. digital Publication Type: Journal Article ISSN: 2473-4209 Standard No.: 10.1002/mp.12005 doi Subjects--Topical Terms: Breast--radiation effectsBreast Neoplasms--radiotherapyBreath HoldingFiducial MarkersFilm DosimetryHumansRadiotherapy DosageRadiotherapy Planning, Computer-AssistedRadiotherapy, Computer-Assisted--standardsRespirationThoracic Wall--radiation effects