Document Type : Conference Proceedings
Iran University of Medical Science, Tehran, Iran
Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, IR
Medical Physics Department, Tehran University of Medical Science, Tehran, Iran
Asisstant Professor, Tehran University of Medical Sciences, Tehran, Iran
Introduction: Modern radiotherapy (RT) techniques allow a highly precise deposition of the radiation dose in tumor. So, high conformal tumor doses can be reached while sparing critical organs at risk.
Materials and Methods: This study was conducted in three phases. In the first phase; Fourteen patients with primary or recurrent prostate cancer receive Gallium-68 PSMA PET/CT planned 3D conformal or intensity modulated radio therapy. In the second phase; fuzzy clustering method to definition the gross volume tumor in prostate. In the next phase; increasing the dose in the tumor according to the functional and molecular information assessed by combined PET/CT imaging and result of clustering.
Result: The mean standard uptake value (Suv) was 6.2 in the lesion of the prostate. To administer 75.6Gy to the entire prostate with a boost dose to 84Gy, was feasible.
Conclusion: The additional of the simultaneous integrated boost(SIB) was associated with greater control but not toxicity.