Thermoforming plastic in lead shield construction
- Univ. of Texas Medical Branch, Galveston (USA)
Radiation treatments using low energy X-rays or electrons frequently require a final field defining shield to be placed on the patient's skin. A custom made lead cut-out is used to provide a close fit to a particular patient's surface contours. We have developed a procedure which utilizes POLYFORM thermoplastic to obtain a negative mold of the patient instead of the traditional plaster bandage or dental impression gel. The Polyform is softened in warm water, molded carefully over the patient's surface, and is removed when set or hardened, usually within five minutes. Then lead sheet cut-outs can be formed within this negative. For shielding cut-outs requiring thicker lead sheet, a positive is made from dental stone using this Polyform negative. We have found this procedure to be neat, fast and comfortable for both patient and the dosimetrist.
- OSTI ID:
- 7244460
- Journal Information:
- Medical Dosimetry; (USA), Vol. 14:3; ISSN 0739-0211
- Country of Publication:
- United States
- Language:
- English
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