Continuous monitoring of CT dose indexes at Dubai Hospital.
| Autor: | AlSuwaidi JS; 1 Department of Medical Education, Dubai Health Authority, Dubai, United Arab Emirates., AlBalooshi LG, AlAwadhi HM, Rahanjam A, ElHallag MA, Ibrahim JS, Rehani MM |
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| Jazyk: | angličtina |
| Zdroj: | AJR. American journal of roentgenology [AJR Am J Roentgenol] 2013 Oct; Vol. 201 (4), pp. 858-64. |
| DOI: | 10.2214/AJR.12.10233 |
| Abstrakt: | Objective: Experience of continuous monitoring and control of patient doses in CT in Dubai Hospital over a period of approximately 4 years (January 2008 through August 2011) is presented. Materials and Methods: Dose measurements-in particular, weighted and volumetric CT dose index, dose-length product (DLP), and estimated effective dose-were regularly monitored using head (16 cm diameter) and body (32 cm diameter) CT phantoms. Patient radiation dose indexes were manually recorded during 2008 for common CT examinations: head, chest, and abdomen and pelvis scans. In 2009-2011, these CT dose data were recorded within the radiology information system and the PACS. Dose reduction actions were taken while maintaining a watch on image quality. The effects of these factors were monitored through change in average DLP on a monthly basis and third quartile annually. Adapted diagnostic reference levels were used for comparison. Results: The reduction in adult dose indexes in 2010 as compared with 2008 was 52%, 16.4%, and 34.8% for head, chest, and abdomen and pelvis examinations, respectively. For the pediatric group, the reduction was 45.23%, 39.6%, and 43.34% for head, chest, and abdomen and pelvis examinations, respectively. Conclusion: Substantial reduction in DLP for common examinations of adults and children is shown through a program of continuous monitoring and action. The results indicate the need to introduce local diagnostic reference levels to substitute for the adapted ones. |
| Databáze: | MEDLINE |
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