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Related Concept Videos

Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
X-ray Imaging01:24

X-ray Imaging

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 X-rays, and by 1900, X-ray was widely...
Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
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An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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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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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
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Updated: Jun 2, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Radiation protection in pediatric imaging.

Bryant Furlow1

  • 1Association of Health Care Journalists, Society of Professional Journalists, and Investigative Reporters and Editors, USA.

Radiologic Technology
|May 17, 2011
PubMed
Summary

Childhood medical radiation exposure poses lifelong risks. Adhering to the "as low as reasonably achievable" (ALARA) principle is crucial for protecting children during diagnostic imaging procedures.

Area of Science:

  • Medical Physics
  • Pediatric Radiology
  • Radiation Biology

Background:

  • Childhood medical radiation exposure can have lifelong consequences.
  • Increasing use of diagnostic imaging in children raises concerns about potential harm from early irradiation.
  • Children face greater radiation risks compared to adults.

Purpose of the Study:

  • To review the biologic effects and risks of ionizing radiation in children.
  • To emphasize the importance of radiation protection practices in pediatric populations.
  • To highlight the role of radiologic technologists in minimizing pediatric radiation doses.

Main Methods:

  • Literature review of biologic effects of ionizing radiation in pediatric populations.
  • Analysis of radiation protection principles and their application in pediatric imaging.

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

Published on: December 19, 2017

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Last Updated: Jun 2, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Whole-body PET/MRI of Pediatric Patients: The Details That Matter
10:02

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

Published on: December 19, 2017

  • Discussion of the "as low as reasonably achievable" (ALARA) principle.

    • Main Results:

    • Ionizing radiation poses significant long-term health risks to children.
    • Strict adherence to radiation protection protocols is essential for pediatric patient safety.
    • The ALARA principle must be consistently applied by all diagnostic imaging personnel.

    Conclusions:

    • Minimizing medical radiation doses in children is a public health imperative.
    • Radiologic technologists are key in implementing effective radiation protection for pediatric patients.
    • Understanding radiation risks and protection strategies is vital for safeguarding children's health.