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Related Concept Videos

Computed Tomography01:10

Computed Tomography

7.8K
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 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...
205
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

192
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...
192
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

284
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...
284
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

329
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
329
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: Dec 20, 2025

Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
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Computed tomography screening for lung cancer.

Monisha Sudarshan1, Sudish Murthy2

  • 1Department of Thoracic and Cardiovascular Surgery, Heart and Vascular Institute, Cleveland Clinic, 9500 Euclid Avenue/Desk J4, Cleveland, OH, 44915, USA. sudarsm2@ccf.org.

General Thoracic and Cardiovascular Surgery
|May 25, 2020
PubMed
Summary
This summary is machine-generated.

Lung cancer screening using computed tomography can help reduce deaths from this disease, especially for current and former smokers. This review covers key trials, cost-effectiveness, and guidelines for lung cancer screening.

Keywords:
CT scanLung cancer preventionLung cancer screeningLung nodulesNLSTNelson

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Area of Science:

  • Oncology
  • Pulmonology
  • Radiology

Background:

  • Cigarette smoking causes 90% of lung cancers.
  • Lung cancer screening aims to reduce mortality and morbidity.
  • Early detection is crucial for improving patient outcomes.

Purpose of the Study:

  • To review computed tomography (CT)-based lung cancer screening trials.
  • To discuss the cost-effectiveness of lung cancer screening.
  • To outline current guidelines and future directions in lung cancer screening.

Main Methods:

  • Review of major computed tomography-based lung cancer screening trials.
  • Analysis of cost-effectiveness data.
  • Synthesis of guidelines from major medical societies.

Main Results:

  • CT screening has shown potential in reducing lung cancer mortality.
  • Cost-effectiveness varies but is generally considered favorable in high-risk populations.
  • Established guidelines provide frameworks for implementing screening programs.

Conclusions:

  • Lung cancer screening programs, particularly CT-based, are vital for high-risk individuals.
  • Ongoing research and guideline updates are essential for optimizing screening strategies.
  • Reducing smoking prevalence remains a primary prevention goal alongside screening efforts.