WE‐C‐303A‐05: Variation in Radiation Doses in Pediatric and Adult Interventional Radiology Procedures: The Need for Dose Optimization
Purpose: To determine the variation in pediatiric and adult doses in cardiac catheterization and angiography procedures and investigate factors that correlate with radiation. Methods and Materials: Effective doses were estimated from the dose area product values of 761 pediatric patients belonging t...
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| Published in: | Medical Physics Vol. 36; no. 6; pp. 2763 - 2764 |
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| Main Authors: | , , , , |
| Format: | Conference Proceeding Journal Article |
| Language: | English |
| Published: |
American Association of Physicists in Medicine
01-06-2009
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Purpose: To determine the variation in pediatiric and adult doses in cardiac catheterization and angiography procedures and investigate factors that correlate with radiation. Methods and Materials: Effective doses were estimated from the dose area product values of 761 pediatric patients belonging to age groups 0, 1, 5 and 10 years old who underwent coarctation (COA) dilatation, patent ductus arteriosus (PDA) occlusion, pulmonary and diagnostic. The causes for high patient doses were investigated and the correlation of effective dose and DAP with patient weight, equivalent cylindrical diameter, fluoroscopy time and number of cine frames were analyzed. The maximum entance skin doses and effective doses were determined for 114 adult patients for cardiac catheterization and 320 adults for angiography procedures. Techniques to reduce patient entrance doses were investigated. Resuts: Pulmonary and PDA are high dose procedures with an average effective dose of 10 and 8.2 mSv respectively. DAP values showed a good correlation with effective doses for diagnostic and COA dilatation with r2 (p <0.0001) equal to 0.81 and 0.70 respectively. PTCA procedure delivered a maximum skin dose (4.5 mGy) that exceeded the threshold dose for skin erythemia. Percutaneous Transhepatic Choleangiography (PTC) and Transjugular Intrahepatic Portosystemic Shunts (TIPSS) delivered the maximum skin dose of 983 and 735 mGy. Conclusions: Review of the protocols and setting of image quality criteria for pediatric especially for age groups 0 and 1 and for adult patients in order that flurocospy time, peak kilovoltage and number of cine series be reduced is needed. Pooling all ages, an effective dose conversion coefficient of 120 cGy‐cm2 per mSv can be used for pediatric procedures.
This research was supported by IAEA. |
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| ISSN: | 0094-2405 2473-4209 |
| DOI: | 10.1118/1.3182484 |