Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Control Systems01:10

Control Systems

2.0K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
2.0K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

930
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
930
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

499
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...
499
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

1.5K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.5K
Computed Tomography01:10

Computed Tomography

9.3K
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...
9.3K

You might also read

Related Articles

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

Sort by
Same author

Towards optimized CT lung cancer screening scan protocols.

The British journal of radiology·2026
Same author

Abdominal Noncontrast Computed Tomography Scanning to Screen for Kidney Cancer and Other Abdominal Pathology Within Community-based Computed Tomography Screening for Lung Cancer: Results of the Yorkshire Kidney Screening Trial.

European urology·2024
Same author

Acceptability of adding a non-contrast abdominal CT scan to screen for kidney cancer and other abdominal pathology within a community-based CT screening programme for lung cancer: A qualitative study.

PloS one·2024
Same author

An evaluation of CT radiation doses within the Yorkshire Lung Screening Trial.

The British journal of radiology·2024
Same author

The Yorkshire Kidney Screening Trial (YKST): protocol for a feasibility study of adding non-contrast abdominal CT scanning to screen for kidney cancer and other abdominal pathology within a trial of community-based CT screening for lung cancer.

BMJ open·2022
Same author

Establishing scanning protocols for a CT lung cancer screening trial in the UK.

The British journal of radiology·2021

Related Experiment Video

Updated: Mar 17, 2026

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
14:19

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space

Published on: February 1, 2016

9.0K

A routine quality assurance test for CT automatic exposure control systems.

Gareth R Iball1, Alexis C Moore, Elizabeth J Crawford

  • 1Leeds General Infirmary. gareth.iball@nhs.net.

Journal of Applied Clinical Medical Physics
|July 26, 2016
PubMed
Summary
This summary is machine-generated.

A new quality assurance test for CT automatic exposure control (AEC) systems was developed using a novel phantom. This test effectively assesses dose and image noise, recommending tolerances for routine CT quality assurance programs.

More Related Videos

Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 4. Medical Imaging Procedures
09:36

Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 4. Medical Imaging Procedures

Published on: October 3, 2016

11.6K
Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
10:24

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

Published on: May 7, 2021

2.9K

Related Experiment Videos

Last Updated: Mar 17, 2026

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
14:19

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space

Published on: February 1, 2016

9.0K
Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 4. Medical Imaging Procedures
09:36

Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 4. Medical Imaging Procedures

Published on: October 3, 2016

11.6K
Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
10:24

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

Published on: May 7, 2021

2.9K

Area of Science:

  • Medical Physics
  • Radiological Imaging Technology
  • Quality Assurance in Healthcare

Background:

  • Computed Tomography (CT) systems rely on Automatic Exposure Control (AEC) for optimal image quality and radiation dose management.
  • Ensuring the consistent performance of CT AEC systems is crucial for patient safety and diagnostic accuracy.
  • Existing quality assurance (QA) methods may not fully capture the performance nuances of modern AEC systems.

Purpose of the Study:

  • To develop and validate a novel quality assurance test for CT AEC systems.
  • To assess the performance of AEC systems using a specifically designed nested phantom.
  • To establish recommended tolerances for CTDIvol and image noise in routine QA.

Main Methods:

  • A three-part nested phantom was created using 16 cm head and 32 cm body CTDI phantoms.
  • The phantom underwent 115 scans over 45 months across scanners from four manufacturers.
  • Longitudinal mA modulation patterns, image noise, CTDIvol, and DLP were recorded and analyzed.

Main Results:

  • The developed phantom demonstrated sensitivity to AEC setup changes, including tube current modulation techniques.
  • For CTDIvol, 12.6% of tests exceeded a 10% deviation from baseline, and 8.1% exceeded 15%.
  • For image noise, 5.9% of tests exceeded a 5% deviation from baseline, and 2% exceeded 10%.

Conclusions:

  • The novel phantom-based QA test is effective for ongoing performance assessment of CT AEC systems.
  • The majority of significant deviations were attributed to incorrect phantom setup or protocol selection.
  • The study recommends incorporating this test into routine CT QA programs with proposed tolerances of ±15% for CTDIvol and ±5% for image noise.