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World J Nucl Med. 2011 Jul;10(2):122-38. doi: 10.4103/1450-1147.89780.

Dosimetric considerations in radioimmunotherapy and systemic radionuclide therapies: a review.

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  • 1Department of Nuclear Medicine and PET, Singapore General Hospital, Singapore.


Radiopharmaceutical therapy, once touted as the "magic bullet" in radiation oncology, is increasingly being used in the treatment of a variety of malignancies; albeit in later disease stages. With ever-increasing public and medical awareness of radiation effects, radiation dosimetry is becoming more important. Dosimetry allows administration of the maximum tolerated radiation dose to the tumor/organ to be treated but limiting radiation to critical organs. Traditional tumor dosimetry involved acquiring pretherapy planar scans and plasma estimates with a diagnostic dose of intended radiopharmaceuticals. New advancements in single photon emission computed tomography and positron emission tomography systems allow semi-quantitative measurements of radiation dosimetry thus allowing treatments tailored to each individual patient.


Radionuclide therapy; quality of life; radioimmunotherapy

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