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Cancer Biother Radiopharm. 2005 Apr;20(2):126-40.

Establishing a clinically meaningful predictive model of hematologic toxicity in nonmyeloablative targeted radiotherapy: practical aspects and limitations of red marrow dosimetry.

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Nuclear Physics Enterprises, Wellington, FL 33414, USA.

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  • Cancer Biother Radiopharm. 2005 Jun;20(3):371.


In either heavily pretreated or previously untreated patient populations, dosimetry holds the promise of playing an integral role in the physician's ability to adjust therapeutic activity prescriptions to limit excessive hematologic toxicity in individual patients. However, red marrow absorbed doses have not been highly predictive of hematopoietic toxicity. Although the accuracy of red marrow dose estimates is expected to improve as more patient-specific models are implemented, these model-calculated absorbed doses more than likely will have to be adjusted by parameters that adequately characterize bone marrow tolerance in the heavily pretreated patients most likely to receive nonmyeloablative radiolabeled antibody therapy. Models need to be established that consider not only absorbed dose but also parameters that are indicative of pretherapy bone marrow reserve and radiosensitivity so that a clinically meaningful predictive model of hematologic toxicity can be established.

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