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Related Concept Videos

Computed Tomography01:10

Computed Tomography

7.6K
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...
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Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

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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...
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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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...
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Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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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...
671
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

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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...
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Related Experiment Video

Updated: May 4, 2026

Computed Tomography-guided Time-domain Diffuse Fluorescence Tomography in Small Animals for Localization of Cancer Biomarkers
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Low-dose computed tomography lung cancer screening.

Bryant Furlow

    Radiologic Technology
    |January 8, 2014
    PubMed
    Summary

    Lung cancer screening with low-dose helical computed tomography (LD-CT) significantly reduces mortality in high-risk individuals. This method is recommended for current or former smokers due to associated risks.

    Area of Science:

    • Oncology
    • Radiology
    • Public Health

    Background:

    • Lung cancer remains a leading cause of cancer mortality globally, strongly linked to tobacco smoking.
    • Low-dose helical computed tomography (LD-CT) screening offers a 20% reduction in lung cancer mortality compared to traditional chest radiography.
    • Risks associated with LD-CT necessitate careful patient selection for lung cancer screening.

    Purpose of the Study:

    • To provide a comprehensive overview of lung cancer.
    • To detail the role of LD-CT in lung cancer screening.
    • To present current guidelines for lung cancer diagnosis and management.

    Main Methods:

    • Review of epidemiology, pathobiology, and diagnostic imaging of lung cancer.
    • Analysis of primary and secondary prevention strategies.

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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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  • Examination of LD-CT screening parameters and research findings.

    • Main Results:

    • LD-CT screening demonstrates a significant reduction in lung cancer mortality for high-risk populations.
    • Evidence supports the efficacy of LD-CT in detecting lung cancer at earlier, more treatable stages.
    • Established practice guidelines incorporate LD-CT screening for eligible individuals.

    Conclusions:

    • LD-CT lung cancer screening is a vital tool for reducing mortality in high-risk populations, primarily current and former smokers.
    • Understanding the risks and benefits is crucial for appropriate implementation of LD-CT screening.
    • This article serves as a guide to the multifaceted aspects of lung cancer, from prevention to treatment.