Logo
ePoster
A 3D printed prostate phantom for use in ultrasound-based brachytherapy

Authors

  • Amani Shaaer
  • Hans Chung
  • Andrew Loblaw
  • Chia-Lin Tseng
  • Gerard Morton
  • Saad Alrashidi
  • Ananth Ravi

Theme

Medical Physics

INSTITUTION

Ryerson University, Toronto, Canada
Sunnybrook health sciences center, Toronto, Canada
University of Toronto, Toronto, Canada

Background
  1. Prostate brachytherapy procedure is operator experience dependent that requires training to ensure high quality outcomes
  2. There is presently inadequate training opportunities for the TRUS-based brachytherapy procedure during radiation oncology residency programs
  3. The use of prostate brachytherapy has continued to decline, which results in a substantial reduction in training opportunities 

Goal:

To develop an in-house gelatin-based prostate phantom for training purposes during ultrasound-based prostate brachytherapy procedures

Summary of Work
Summary of Results

Ultrasound images of the phantom before and after needles insertion

 

 

                             Left to right: Survey results, Young's modulus vs. gelatin concentration, and CNR as a function of scattering agent concentration, respectively

Conclusion
  1. We have developed a 3D printing prostate phantom to be used for training purposes during interstitial prostate brachytherapy
  2. Based on the results, the reconstructed phantom could be used as an anthropomorphic surrogates for ultrasound imaging during brachytherapy procedures
Acknowledgement

The authors gratefully acknowledge the help of Ross Williams at Sunnybrook Research Insititute for his assisstance with the US elastography measurements. The authors also would like to thank The Ministry of Higher Education of Saudi Arabia (King Faisal Specialist Hospital & Research Center, Riyadh) and the Prostate Cancer Fight Foundation for funding

References
  1.  M. Gaudet, J. Jaswal, and M. Keyes, “Current state of brachytherapy teaching in Canada: A national survey ofradiation oncologists, residents, and fellows,” Brachytherapy, vol. 14, no. 2, pp. 197–201, 2015.
  2. “Summary of ACGME Program requirements for graduate medical education in radiation oncology changes. Effective July 1, 2020.,” no. 1, pp. 1–4.
  3.   P.F. Orio, P.L. Nguyen, et al., “Prostate Brachytherapy Case Volumes by Academic and Nonacademic Practices: Implications for Future Residency Training,” Int. J. Radiat. Oncol. Biol. Phys., vol. 96, no. 3, pp. 624–628, 2016.
  4.  W.R. Lee, “Brachytherapy Experience in Radiation Oncology Residency Programs in the United States-From Bad to Worse,” Brachytherapy, vol. 15, no. 2016, p. S174, 2016.
Background
Summary of Work
  1. Three materials were used to cast the phantom: gelatin powder, graphite powder, and water
  2. The prostate was developed using 9% gelatin and 0.3% graphite per 100 cc water
  3.  Five radiation oncologists were asked to test the phantom and rate it in different aspects 
  4. Contrast to noise ratio (CNR) of the prostate phantom was estimated using different concentration of graphite
  5. The stiffness of the phantom was  evaluated based on ultrasound elastography measurements to estimate an average Young’s modulus
Summary of Results
Conclusion
Acknowledgement
References
Send ePoster Link