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Radiation doses and image information in digital pelvimetry with a phosphorous screen
G Holje1, O Jarlman, L Samuelsson
1Department of Radiophysics, University Hospital, Lund, Sweden.
Acta Radiologica (Stockholm, Sweden : 1987)
|January 1, 1997
Summary
Digital pelvimetry using an imaging plate technique significantly reduces patient radiation dose by over 50% compared to traditional screen-film systems. This lowers radiation risk to the fetus during pelvic imaging.
Area of Science:
- Radiological imaging
- Medical physics
- Diagnostic radiology
Background:
- Digital pelvimetry offers potential dose reduction benefits.
- Assessing patient dose is crucial for minimizing radiation risk.
Purpose of the Study:
- To compare patient radiation dose in digital pelvimetry using a phosphorous screen versus a high-sensitivity screen-film system.
- To evaluate dose reduction strategies in digital pelvimetry.
Main Methods:
- Performed entrance dose measurements and absorbed dose determinations in patient exposures.
- Reduced exposure factors (mAs) for lateral and anteroposterior (a.p.) views in the first series.
- Increased tube potential (kV) in the second series to enhance radiation penetration.
Main Results:
- The imaging plate technique in pelvimetry allows for significant dose reduction.
- Radiation dose was reduced to less than 50% of that from a high-sensitivity screen-film system.
Conclusions:
- Digital pelvimetry with an imaging plate technique is effective for dose reduction.
- This technique substantially lowers radiation risk to the fetus.