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Related Experiment Video

Updated: Dec 21, 2025

Author Spotlight: Developing Cost-Effective and Durable Ultrasound-Guided 3D-Printed Nerve Block Trainers
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Radiolucent prosthetic gel.

A A Beisang1, R A Geise, R A Ersek

  • 1Department of Pediatrics, University of Minnesota Hospitals, Minneapolis.

Plastic and Reconstructive Surgery
|May 1, 1991
PubMed
Summary

A new Bio-Oncotic gel offers improved radiolucency for breast implants, minimizing mammography interference. This biologically compatible gel is the most appropriate filler for breast prostheses, unlike silicone implants.

Area of Science:

  • Biomaterials science
  • Radiology
  • Medical imaging

Background:

  • Silicone breast implants significantly interfere with mammography, obscuring breast tissue.
  • Current implant materials pose challenges for diagnostic imaging accuracy.

Purpose of the Study:

  • To evaluate clinically available breast implant filling materials for mammographic radiolucency.
  • To identify a filler material that approximates the radiolucency of normal breast tissue.

Main Methods:

  • Comparative evaluation of radiolucency for silicone, peanut oil, saline, and Bio-Oncotic gel.
  • Assessment of biological compatibility and physical properties (e.g., leakage).

Main Results:

  • Silicone implants completely obscure breast tissue on mammograms.

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  • Peanut oil is more radiolucent than normal tissue.
  • Physiologic saline simulates tissue density but has leakage issues.
  • Bio-Oncotic gel approximates the radiolucency of normal breast tissue and is biologically compatible.

    • Conclusions:

    • Bio-Oncotic gel is the most suitable filler material for breast prostheses due to its radiolucency and biocompatibility.
    • Further clinical studies are recommended to validate its use.