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  • Title: [Evaluation of a leaden radiation protection barrier for dose reduction for the physician during CT fluoroscopy-guided interventions].
    Author: Haipt F, Kirsch M, Hosten N.
    Journal: Rofo; 2010 Jun; 182(6):512-7. PubMed ID: 19941247.
    Abstract:
    PURPOSE: The use of a moveable leaden radiation protection barrier for additional dose reduction for the physician during CT-fluoroscopy-guided intervention was evaluated. MATERIALS AND METHODS: A Monte-Carlo simulation was first performed to evaluate the chance of dose reduction by a leaden barrier qualitatively. Dose measurements with an Alderson phantom and an ionization chamber were then made to detect the dose rates with and without a lead plate at the patient to reduce the scattered radiation. Later, dose measurements with and without the radiation protection barrier were performed. RESULTS: A lead plate at the patient to reduce the scattered radiation caused dose reduction (mean shielding coefficient 3.3; median 3.3; standard deviation 1.1 / mean dose reduction 67 %, median 69 %, standard deviation 10 %). In addition to this, the use of a leaden radiation protection barrier caused an even greater dose reduction (mean shielding coefficient 10.9; median 7.7; standard deviation 8.7 / mean dose reduction 84 %, median 86 %, standard deviation 11 %). CONCLUSION: Besides already known possibilities of dose reduction (X-ray protective clothing, lead plate, instrument settings, computer-controlled navigation systems, needle holder etc.), the installation of a leaden radiation protection barrier can reduce the radiation exposure of person during CT-fluoroscopy-guided interventions.
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