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Radiation dose from a phosphorous‐32 impregnated wire mesh vascular stent
Author(s) -
Janicki C.,
Duggan D. M.,
Coffey C. W.,
Fischell D. R.,
Fischell T. A.
Publication year - 1997
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.597910
Subject(s) - dosimetry , stent , materials science , nuclear medicine , imaging phantom , radiation , ionization chamber , biomedical engineering , optics , physics , ion , radiology , medicine , quantum mechanics , ionization
The near field dose distribution of a realistic vascular stent impregnated with radioactive32 P is calculated employing the dose‐point‐kernel (DPK) method in a homogeneous and uniform medium. The cylindrical wire mesh geometry for the Palmaz–Schatz™ [Palmaz–Schatz is a tradename of Cordis (a Johnson & Johnson company)] stent is incorporated in the model calculation, and the dose distribution generated by the beta particles emitted from the decayed radioactive32 P is computed at distances ranging from 0.1 to 2 mm exterior to the stent surface. Dose measurements were obtained using radiochromic film dosimetry media on an actual Palmaz–Schatz half‐stent impregnated with32 P using ion implantation, and compared to the DPK model predictions. The close agreement between the model calculation and the film dosimetry data confirms the validity of the model which can be adapted to a variety of different stent designs.