AI Article Synopsis
- The study explored how factors like X-ray beam filtration, projection angle, and protective equipment affect conversion coefficients for effective doses and entrance skin doses in interventional radiology.
- Computer simulations using virtual models of patients and physicians were employed to replicate a typical interventional radiology room scenario.
- Results indicated that copper filtration increased dose values, with the highest values seen in specific projection angles, and that using lead barriers significantly improves protection for physicians.
Article Abstract
In this work we investigated the way in which conversion coefficients from air kerma-area product for effective doses (CCE) and entrance skin doses (CCESD) in interventional radiology (IR) are affected by variations in the filtration, projection angle of the X-ray beam, lead curtain attached to the surgical table, and suspended shield lead glass in regular conditions of medical practice. Computer simulations were used to model an exposure scenario similar to a real IR room. The patient and the physician were represented by MASH virtual anthropomorphic phantoms, inserted in the MCNPX 2.7.0 radiation transport code. In all cases, the addition of copper filtration also increased the CCE and CCESD values. The highest CCE values were obtained for lateral, cranial and caudal projections. In these projections, the X-ray tube was located above the table, and more scattered radiation reached the middle and upper portions of the physician trunk, where most of the radiosensitive organs are located. Another important result of this study was to show that the physician's protection is 358% higher when the lead curtain and suspended shield lead glasses are used. The values of CCE and CCESD, presented in this study, are an important resource for calculation of effective doses and entrance skin doses in clinical practice.
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| http://dx.doi.org/10.1016/j.ejmp.2015.06.011 | DOI Listing |
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