Journal of Medical Physics
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Year : 1999  |  Volume : 24  |  Issue : 2  |  Page : 47-50

In-VIVO Dosimetric Study Of Carcinoma Of Uterine Cervix With FBX Solution In External Beam Therapy



Correspondence Address:
Challapalli Srinivas


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Source of Support: None, Conflict of Interest: None


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To ensure accurate dose delivery to target site in external beam therapy and brachytherapy, various authors have conducted tests to assess the process of manual dose calculations. In-vivo dosimetric measurement is one of these methods to verify these calculations. In this study, an attempt has been made to compare the manually calculated dose to dose estimated using a chemical dosimeter (FBX) solution (In-vivo method, using polypropylene vials), on 12 patients of carcinoma of uterirne cervix in external beam therapy. Dose measured by FBX vial varies in the range oft 2 to 6.75%, as compared with manual calculations. These variations seen may be attributed to the location of the vial position in the vagina, with reference 111 the beam axis (may not be horizontal), off axis position, manual calculation variations and reproducibility of the FBX system etc. FBX dosimetry offers itself as an in-vivo method to estimate the dose delivered to the target site in external beam therapy.


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