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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

179
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...
179
Principles of Disease Surveillance01:26

Principles of Disease Surveillance

379
Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
379
Positron Emission Tomography01:29

Positron Emission Tomography

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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...
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Steps in Outbreak Investigation01:18

Steps in Outbreak Investigation

408
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
408
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

259
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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Related Experiment Video

Updated: Dec 12, 2025

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

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Computed tomography surveillance helps tracking COVID-19 outbreak.

Akihiro Machitori1, Tomoyuki Noguchi2,3,4, Yusuke Kawata1

  • 1Department of Radiology, National Center for Global Health and Medicine, Kohnodai Hospital, 1-7-1 Kohnodai, Ichikawa City, Chiba Province, 272-8516, Japan.

Japanese Journal of Radiology
|August 9, 2020
PubMed
Summary

A computed tomography (CT) surveillance program effectively mapped COVID-19 epidemiology using clinical CT data. This method identified key patient demographics and common CT findings, mirroring PCR surveillance results.

Keywords:
COVID-19PneumoniaPublic health practiceSurveys and questionnairesTomographyViralX-ray computed

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Area of Science:

  • Radiology
  • Infectious Diseases
  • Epidemiology

Background:

  • Computed tomography (CT) plays a crucial role in diagnosing viral pneumonia.
  • Understanding the epidemiological spread and characteristic imaging findings of novel infectious diseases is vital.
  • Clinical CT data offers a potential resource for real-time disease surveillance.

Purpose of the Study:

  • To evaluate a CT surveillance program for its ability to delineate COVID-19 epidemiological features.
  • To investigate the types and frequency of CT findings associated with COVID-19.
  • To compare CT surveillance data with PCR-based surveillance for COVID-19.

Main Methods:

  • A retrospective analysis of individuals with suspected viral pneumonia on CT scans.
  • Japanese board-certified radiologists registered patient data, including demographics, CT dates, PCR results, CT findings, and institution location.
  • Comparison of diurnal patient numbers and regional distribution between CT surveillance and PCR-positive surveillance.

Main Results:

  • 637 patients were registered between January 1 and April 17, 2020.
  • CT surveillance revealed an age peak in the 60-69 year range and a male predominance.
  • The most frequent CT finding was bilateral ground-glass opacities; CT surveillance data correlated with PCR surveillance trends.

Conclusions:

  • A CT surveillance program utilizing clinical CT data can effectively outline the epidemiological characteristics of COVID-19.
  • This approach provides valuable insights into disease patterns and imaging manifestations.
  • CT surveillance demonstrates similarity to PCR surveillance in tracking disease spread.