Bone Marrow Dose in Chest Radiography: The Posteroanterior vs. Anteroposterior Projection
Abstract
The dose to active bone marrow resulting from anteroposterior (AP) and posteroanterior (PA) chest examinations was estimated using an Alderson Rando phantom and extruded lithium fluoride dosimeters. The AP projections resulted in a mean marrow dose range of 1.9–2.6 mrad (0.019–0.026 mGy) as compared to doses for PA projections of 3.4–3.8 mrad (0.034–0.038 mGy) for optimally diagnostic exposures taken at 70, 90, and 120 kVp.
Article History
Received: Dec 20 1978Revision requested: Apr 13 1979
Accepted: May 29 1979
Published in print: Oct 1979