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A training phantom for ultrasound-guided needle insertion and suturing
Khashayar Nattagh1, Timmy Siauw2, Jean Pouliot2
1Department of Radiation Oncology, University of California, San Francisco, CA; Department of Physics, University of California, Berkeley, CA.
Brachytherapy
|February 18, 2014
Summary
This study introduces a low-cost, realistic gelatin phantom for training gynecologic brachytherapy (BT) skills. The method enables physicians to practice image-guided needle insertion and suturing techniques effectively.
Area of Science:
- Medical Education
- Medical Imaging
- Gynecologic Oncology
Background:
- Gynecologic brachytherapy (BT) requires specialized skills in suturing and image-guided needle insertion.
- Current training methods in the operating room are suboptimal for resident physicians.
- Developing realistic and accessible training tools is crucial for improving procedural proficiency.
Purpose of the Study:
- To present a fast, low-cost method for creating realistic and disposable gynecologic phantoms.
- To provide a training tool for physicians new to gynecologic brachytherapy.
- To facilitate practice of critical skills such as image-guided needle insertion and suturing.
Main Methods:
- Construction of gelatin-based gynecologic phantoms with embedded rectal and vaginal cavities, uterus, and cervix.
- Coating the gelatin uterus with rubber to simulate soft tissue and enhance imaging contrast for CT and US.
- Evaluation of phantom durability, longevity, construction time, material costs, and imaging quality.
Main Results:
- Anatomical structures were clearly visualized using both CT and US imaging.
- Initial phantom costs were under $200 with 48-hour curing time; subsequent phantoms cost under $20 and required 24-hour curing.
- Reusable components significantly reduced time and cost for repeat phantom construction.
Conclusions:
- A viable method for constructing gelatin gynecologic phantoms for medical training was established.
- These phantoms effectively support training in image-guided brachytherapy needle insertion.
- The phantoms allow for practice of suturing techniques on the vaginal wall and cervical lip.
