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Patient doses using multidetector computed tomography scanners in Kenya.

G K Korir¹, J S Wambani, I K Korir

¹Department of Physics and Applied Physics, University of Massachusetts Lowell, One University Ave., Lowell, MA 01854, USA. chumo2009@gmail.com

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|January 27, 2012

Summary

Multislice computed tomography (CT) scans can increase patient radiation dose, exceeding international diagnostic reference levels (DRLs). Optimized scanning protocols and institutional DRLs are needed for effective dose management in CT examinations.

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Area of Science:

Medical Physics
Radiology
Radiation Protection

Background:

Multislice computed tomography (CT) is widely used in medical imaging.
Assessing patient radiation dose from CT examinations is crucial for safety.
International diagnostic reference levels (DRLs) provide benchmarks for acceptable radiation doses.

Purpose of the Study:

To assess patient radiation dose from multislice CT examinations.
To compare patient doses with international DRLs.
To evaluate the need for optimized scanning protocols and institutional DRLs.

Main Methods:

A questionnaire method was developed to record patient dose and scanning parameters.
Data were collected for head, chest, abdomen, and lumbar spine CT examinations.
Patient doses were compared against international DRLs.

Main Results:

Patient doses for brain, chest, and abdomen CT examinations were found to be 1 to 4 times higher than international DRLs.
The study confirmed that multislice CT generally elevates patient radiation dose.
No significant impact on diagnostic image quality was observed with optimized protocols.

Conclusions:

Multislice CT examinations can result in patient doses exceeding international DRLs.
Implementing local optimized scanning protocols and institutional DRLs is essential for managing patient radiation dose.
Effective dose management can be achieved without compromising diagnostic image quality in CT scans.