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Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...

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Updated: Jun 16, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Paediatric CT examinations in 19 developing countries: frequency and radiation dose.

W E Muhogora¹, N A Ahmed, J S Alsuwaidi

¹Tanzania Atomic Energy Commission, PO Box 743, Arusha, Tanzania.

Radiation Protection Dosimetry

|February 16, 2010

Summary

This summary is machine-generated.

Paediatric computed tomography (CT) use varies significantly across developing regions. Many facilities need better radiation dose awareness and optimization for children, highlighting a need for training and monitoring.

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Whole-body PET/MRI of Pediatric Patients: The Details That Matter

Whole-body PET/MRI of Pediatric Patients: The Details That Matter

Published on: December 19, 2017

Area of Science:

Medical Imaging
Radiology
Public Health

Background:

Computed tomography (CT) is a vital diagnostic tool, but its use in paediatric populations requires careful consideration of radiation exposure.
Data on paediatric CT frequency and radiation doses in developing countries are scarce, hindering effective dose optimization strategies.

Purpose of the Study:

To investigate the frequency of paediatric CT examinations in developing countries across Africa, Asia, and Eastern Europe.
To assess the magnitude of radiation doses delivered during paediatric CT examinations in these regions.
To identify areas for improvement in radiation protection practices for children undergoing CT scans.

Main Methods:

A survey of 128 CT facilities in 28 developing countries was conducted to determine paediatric CT examination frequency.
Radiation dose data, including weighted CT dose index (CTDI(w)) and dose length product (DLP), were collected from 101 facilities in 19 countries.
Standard methods were used to assess doses for common paediatric CT examinations (chest, abdomen, pelvis).

Main Results:

Paediatric CT examinations constituted 20%, 16%, and 5% of all CTs in participating African, Asian, and Eastern European centers, respectively.
Eleven facilities (6 countries) used adult CT parameters for paediatric patients, indicating a lack of awareness and need for optimization.
Significant variations in CTDI(w) (up to factor 55) and DLP (up to factor 20) were observed across regions, with generally lower doses in Japan.

Conclusions:

There is a significant need to justify and optimize CT examinations for children in many developing countries.
Improved awareness, targeted training programs, and consistent monitoring of radiation doses are crucial for enhancing paediatric radiation protection.
Ensuring adequate diagnostic image quality while minimizing radiation exposure remains a key challenge.