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Related Concept Videos

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...
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...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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...
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...

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Updated: May 31, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
04:40

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Published on: August 28, 2018

Coronary computed tomography angiography.

Su M Chang1, Sabha Bhatti, Faisal Nabi

  • 1Department of Cardiology, Methodist DeBakey Heart and Vascular Center, Houston, Texas, USA. smchang@tmhs.org

Current Opinion in Cardiology
|July 12, 2011
PubMed
Summary
This summary is machine-generated.

Coronary computed tomography angiography (CCTA) offers accurate noninvasive assessment of coronary artery disease (CAD), serving as a valuable alternative to invasive coronary angiography (ICA) for select patients.

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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Published on: December 9, 2021

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Medical Diagnostics

Background:

  • Traditional noninvasive cardiac imaging has limitations, leading to repetitive testing or unnecessary invasive coronary angiography (ICA).
  • Advances in multislice computed tomography angiography (CCTA) provide high spatial and temporal resolution for accurate noninvasive coronary artery assessment.
  • This technological shift impacts the management of patients with suspected coronary artery disease (CAD).

Purpose of the Study:

  • To review the role of coronary computed tomography angiography (CCTA) as a noninvasive imaging alternative for coronary artery disease (CAD).
  • To evaluate the diagnostic accuracy and prognostic value of CCTA compared to invasive coronary angiography (ICA).
  • To address concerns regarding radiation exposure and highlight recent advancements in CCTA technology.

Main Methods:

  • Review of multicenter studies comparing CCTA with ICA for detecting coronary stenosis.
  • Analysis of evidence-based outcome data validating CCTA's prognostic capabilities.
  • Assessment of CCTA's comprehensive evaluation of coronary anatomy, plaque, and ventricular function.

Main Results:

  • CCTA demonstrates very high diagnostic accuracy and a negative predictive value (>98%) for detecting coronary stenosis compared to ICA.
  • Absence of CAD on CCTA indicates an excellent prognosis; increasing disease severity correlates with worse outcomes.
  • Modern CCTA technology significantly reduces radiation dose (<1 mSv) while maintaining diagnostic quality.

Conclusions:

  • CCTA is a validated noninvasive imaging alternative to ICA for selected patients.
  • Appropriate use of CCTA is recommended for patients at low to intermediate risk of CAD.
  • Recent guidelines address appropriate clinical indications for cardiac computed tomography.