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Local diagnostic reference levels in standard X-ray examinations
Gaetano Compagnone1, Laura Pagan, Carlo Bergamini
1Medical Physics Department, S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy. gcompa@med.unibo.it
Radiation Protection Dosimetry
|December 2, 2004
Summary
Local diagnostic reference levels (LDRLs) can optimize patient radiation protection in hospitals. This study found all entrance skin dose values were below national levels, suggesting LDRLs can further reduce doses.
Area of Science:
- Medical Physics
- Radiology
- Radiation Protection
Background:
- National diagnostic reference levels (NDRLs) are crucial for patient radiation protection.
- Large hospitals with multiple radiological departments can establish local diagnostic reference levels (LDRLs).
Purpose of the Study:
- To determine local diagnostic reference levels (LDRLs) for radiation protection in a large hospital.
- To compare entrance skin dose (ESD) distributions with national diagnostic reference levels (NDRLs).
Main Methods:
- Collected entrance skin dose (ESD) data for 10 standard radiological projections across eight departments.
- Calculated ESD distributions and compared them with Italian NDRLs.
- Analyzed the ratio of maximum to minimum ESDs within and across departments.
Main Results:
- All measured ESD values were below the corresponding NDRLs.
- The maximum/minimum ratio of ESDs varied significantly between individual patients and departments.
- Established LDRLs can be proposed for further dose optimization.
Conclusions:
- Implementing LDRLs can enhance patient radiation protection beyond national standards.
- Significant variations in ESDs exist within and across departments, highlighting the need for local optimization.
- LDRLs provide a valuable tool for achieving more comprehensive patient radiation safety.