Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Computed Tomography

Computed Tomography

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...

Imaging Studies III: Computed Tomography

Imaging Studies III: Computed Tomography

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...

Biological Effects of Radiation

Biological Effects of Radiation

All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they produce ions...

Radiological Investigation I: X-ray and CT

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...

X-ray Imaging

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 V: CT

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Trump Administration sparks furore and resignations over fruit-flavoured vape authorisations.

The Lancet. Respiratory medicine·2026

Same author

Findings suggest under-reporting of patient data in US SEER.

The Lancet. Oncology·2026

Same author

US Senate Bill aims to boost cancer trial enrolment and equity.

The Lancet. Oncology·2026

Same author

Local coalitions track pollution in neglected US communities.

The Lancet. Respiratory medicine·2026

Same author

Landmark verdicts against social media companies in the USA.

The Lancet. Child & adolescent health·2026

Same author

Senators demand explanation for US Preventive Services Task Force halt.

The Lancet. Oncology·2026

Search research articles

Related Experiment Video

Updated: Jun 13, 2026

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

Radiation dose in computed tomography.

Radiologic Technology

|May 7, 2010

Summary

This summary is machine-generated.

Computed tomography (CT) scans offer detailed imaging but increased use raises concerns about patient radiation dose. This review covers CT trends, radiation safety, and dose management strategies.

More Related Videos

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Published on: February 20, 2021

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

Related Experiment Videos

Last Updated: Jun 13, 2026

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Published on: February 20, 2021

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

Area of Science:

Medical Imaging
Radiology
Radiation Oncology

Background:

Computed tomography (CT) scanning is a vital tool for medical diagnosis and radiation therapy planning.
Increased CT scan utilization, driven by patient demand and accessibility, has led to concerns regarding radiation exposure risks.
The clinical justification and necessity of numerous CT procedures are currently under scrutiny.

Purpose of the Study:

To review recent advancements and trends in CT imaging.
To examine patient radiation dose and dosimetry in CT procedures.
To discuss the biological effects of ionizing radiation and radiation safety principles.

Main Methods:

Literature review of recent events and trends in CT imaging.
Analysis of patient radiation dose and dosimetry data.
Synthesis of information on biological effects and radiation safety.

Main Results:

CT imaging has significantly enhanced diagnostic capabilities and treatment planning.
There is a notable increase in the annual number of CT scans performed.
Debate exists regarding the risks and clinical necessity of current CT scan volumes.

Conclusions:

Effective management of patient radiation dose is crucial in routine CT imaging.
Understanding radiation biology and safety principles is essential for clinicians.
Strategies for dose reduction and optimization in CT are necessary to balance benefits and risks.