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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.
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Related Experiment Video

Updated: May 16, 2026

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

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].

R Lazor¹, J Cornuz, A Lovis

¹Service de pneumologie, Département de medecine CHUV, Lausanne. romain.lazor@chuv.ch

Revue Medicale Suisse

|December 18, 2012

Summary

This summary is machine-generated.

Lung cancer screening using low-dose computed tomography can reduce mortality in smokers. However, challenges like false positives and cost require careful consideration for primary care physicians managing patient screening requests.

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Area of Science:

Pulmonology
Radiology
Oncology

Context:

The National Lung Screening Trial (NLST) demonstrated reduced lung cancer mortality with low-dose computed tomography (LDCT) screening in high-risk smokers.
Despite promising NLST results, significant challenges persist, including high false-positive rates, overdiagnosis risk, and questions regarding optimal screening protocols.

Purpose:

To review the current evidence and guidelines for lung cancer screening.
To provide guidance for primary care physicians addressing patient inquiries about lung cancer screening.
To highlight unresolved issues and the need for structured screening programs.

Summary:

Low-dose computed tomography (LDCT) screening shows potential for reducing lung cancer mortality in high-risk individuals, particularly smokers.
Key challenges include managing false positives, avoiding overdiagnosis, and determining optimal screening intervals and duration.
Structured screening programs are essential for ensuring patient safety, technical quality, and multidisciplinary care.

Impact:

Informs primary care physicians on managing patient requests for lung cancer screening.
Highlights the importance of evidence-based decision-making in lung cancer screening implementation.
Underscores the need for further research to address current uncertainties in lung cancer screening protocols.