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Updated: Aug 19, 2026
Monitoring the Wall Mechanics During Stent Deployment in a Vessel
Published on: May 8, 2012
Calibration of the photon component of 198Au stents
Wesley S Culberson1, Larry A DeWerd, Bruce R Thomadsen
1Department of Medical Physics, University of Wisconsin-Madison, Madison, WI 53706, USA. wsculberson@wisc.edu
Purpose:
198Au has promising characteristics for radioactive stent material, having properties as a mixed beta-particle and gamma emitter. Calibration of these radioactive stents is required to provide accurate clinical dosimetry.
Methods And Materials:
We have developed an electroplating technique to incorporate stable gold onto stents followed by activation to 198Au in the University of Wisconsin nuclear reactor. The calibration method is a modification of the NIST traceable, in-air calibration technique for high-dose-rate (HDR) 192Ir sources.
Results:
The air-kerma strength of HDR and low-dose-rate (LDR) sources was measured for proof of principle and found to agree to within 3% of values obtained with other NIST traceable calibration techniques. The photon component of two 198Au radioactive stents was measured over a period of 3 days.
Conclusion:
The air-kerma strength of HDR and LDR sources was measured for proof of principle and found to agree to within 3% of values obtained with other NIST traceable calibration techniques.
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