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Related Concept Videos

Computed Tomography01:10

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 Tomography01:27

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...
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...
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...

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Related Experiment Video

Updated: May 18, 2026

Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
08:05

Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia

Published on: December 19, 2020

Computed tomography screening for lung cancer.

Eric J Schmidlin1, Baskaran Sundaram, Ella A Kazerooni

  • 1Division of Cardiothoracic Radiology, Department of Radiology, University of Michigan Health System, 1500 East Medical Center Drive, Cardiovascular Center-Room 5481, Ann Arbor, MI 48109, USA.

Radiologic Clinics of North America
|September 15, 2012
PubMed
Summary
This summary is machine-generated.

Low-dose computed tomography screening significantly lowers lung cancer mortality in high-risk individuals. Current guidelines recommend this approach for high-risk groups, but its use in lower-risk populations is still under investigation.

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Computed Tomography-guided Time-domain Diffuse Fluorescence Tomography in Small Animals for Localization of Cancer Biomarkers
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Using Micro-computed Tomography for the Assessment of Tumor Development and Follow-up of Response to Treatment in a Mouse Model of Lung Cancer
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Using Micro-computed Tomography for the Assessment of Tumor Development and Follow-up of Response to Treatment in a Mouse Model of Lung Cancer

Published on: May 20, 2016

Area of Science:

  • Oncology
  • Radiology
  • Pulmonology

Background:

  • Lung cancer screening with low-dose computed tomography (LDCT) is proven effective for high-risk patients.
  • Current recommendations do not support screening with chest radiography or sputum analysis alone.
  • The efficacy of LDCT screening in low-to-moderate risk populations remains undetermined.

Purpose of the Study:

  • To evaluate the effectiveness and feasibility of lung cancer screening.
  • To establish a standardized framework for multidisciplinary lung cancer testing and management.
  • To inform guidelines for lung cancer screening in various risk groups.

Main Methods:

  • Review of current lung cancer screening guidelines and evidence.
  • Analysis of the role of low-dose computed tomography (LDCT) in reducing lung cancer mortality.
  • Assessment of the limitations of alternative screening methods like chest radiography and sputum analysis.

Main Results:

  • Low-dose computed tomography (LDCT) screening demonstrably reduces lung cancer mortality in high-risk individuals.
  • Screening using chest radiography alone or with sputum analysis is not currently recommended.
  • The impact and feasibility of screening in patients with low or moderate lung cancer risk are not yet established.

Conclusions:

  • Lung cancer screening with LDCT is a validated strategy for high-risk populations.
  • A standardized, multidisciplinary approach is essential for effective lung cancer screening programs.
  • Further research is needed to determine the role of LDCT in lower-risk individuals.