A hybrid calibration method uses a calibration phantom (exterior reference) scanned simultaneously with the patient, and one or more known tissues of the subject (interior reference) to create a hybrid calibration reference that improves the measurement of tissue densities throughout the body. In addition,...http://www.google.es/patents/US7292721?utm_source=gb-gplus-sharePatente US7292721 - Calibration of tissue densities in computerized tomography
Calibration of tissue densities in computerized tomography
