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Related Concept Videos

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

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...
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...
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.
Definition and Purpose
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...
Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

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Related Experiment Video

Updated: May 12, 2026

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure
15:18

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure

Published on: July 30, 2009

Safety in pediatric imaging: an update.

Owen John Arthurs1, Alvhild Alette Bjørkum

  • 1Department of Radiology, Great Ormond Street Hospital, London, UK.

Acta Radiologica (Stockholm, Sweden : 1987)
|April 4, 2013
PubMed
Summary

Medical imaging for children involves assumptions about safety. Current evidence shows a small risk from cumulative low-dose ionizing radiation (X-rays, CT), suggesting non-ionizing methods are preferable. Emerging MRI/ultrasound data requires ongoing review.

Keywords:
CTMRIPediatricradiographsafety

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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

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Last Updated: May 12, 2026

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure
15:18

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure

Published on: July 30, 2009

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

Area of Science:

  • Pediatric Radiology
  • Medical Imaging Safety
  • Radiation Biology

Background:

  • Current pediatric imaging practices rely on assumptions regarding modality safety due to limited scientific data.
  • Established distinctions between safe and unsafe imaging modalities lack robust scientific validation.
  • Assessing risks associated with medical imaging in children is crucial for informed clinical decision-making.

Purpose of the Study:

  • To review the latest scientific evidence on the safety of medical imaging modalities in children.
  • To evaluate the risks associated with ionizing radiation (X-rays, CT) and magnetic resonance imaging (MRI) in pediatric patients.
  • To inform best practices in pediatric imaging based on current scientific understanding.

Main Methods:

  • Systematic review of the latest scientific evidence on pediatric medical imaging.
  • Analysis of data concerning exposure to ionizing radiation (X-rays, CT) and MRI in children.
  • Evaluation of emerging evidence on potential effects of MRI and ultrasound.

Main Results:

  • A small but statistically significant risk associated with cumulative low-dose ionizing radiation in children has been identified.
  • Non-ionizing imaging techniques are recommended where feasible, considering predicted cumulative radiation exposure.
  • Preliminary evidence suggests potential unknown effects from MRI and ultrasound warrant further investigation.

Conclusions:

  • Pediatric imaging practices must be continually updated based on evolving scientific data.
  • Prioritizing non-ionizing radiation modalities is advisable for minimizing cumulative radiation exposure in children.
  • Further research is needed to fully understand the long-term effects of all pediatric imaging modalities.