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Computed Tomography01:10

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Radiological Investigation I: X-ray and CT01:30

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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...
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Imaging Studies III: Computed Tomography01:27

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
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X-ray Imaging01:24

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Imaging Studies I: CT and MRI01:14

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Radiation dose in paediatric computed tomography: risks and benefits.

G I Ogbole

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    Summary

    Computed tomography (CT) scans provide valuable diagnostic images but raise radiation exposure concerns, especially for children. Reducing radiation settings in pediatric CT is crucial to minimize long-term health risks.

    Keywords:
    Children.Computed TomographyPatient Dose ReductionRadiation DoseRadiation Risk

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    Area of Science:

    • Medical Imaging
    • Radiology
    • Pediatric Health

    Background:

    • Computed tomography (CT) is a vital diagnostic tool offering rapid, high-resolution 3D imaging.
    • Increasing global CT use raises concerns about cumulative radiation exposure and patient safety.
    • Current systems lack mechanisms for tracking patient radiation doses from medical sources.

    Purpose of the Study:

    • To address concerns regarding radiation exposure in pediatric computed tomography.
    • To highlight the increased lifetime radiation risk in children compared to adults undergoing CT.
    • To advocate for tailored radiation reduction strategies in pediatric CT examinations.

    Main Methods:

    • Review of existing literature on pediatric CT radiation doses and associated risks.
    • Analysis of studies demonstrating the feasibility of reduced milliampere-second (mAs) settings in pediatric CT.
    • Discussion of risk-benefit assessments specific to pediatric populations.

    Main Results:

    • Pediatric CT examinations carry a significantly higher lifetime radiation risk compared to adult CT.
    • Lower milliampere-second (mAs) settings can be employed in pediatric CT without compromising diagnostic image quality.
    • The frequency of pediatric CT scans is increasing, necessitating proactive dose reduction measures.

    Conclusions:

    • Children require distinct radiation management protocols in CT, as they are not simply smaller adults.
    • Active reduction of CT exposure settings in pediatric patients is essential to mitigate potential long-term health risks.
    • While CT benefits often outweigh risks, cautious application and dose optimization are paramount in pediatric imaging.