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Related Concept Videos

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...
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 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...
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...
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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Related Experiment Video

Updated: Jul 3, 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 angiography with flashing tomosynthesis.

H Becher, M Schlüter, D G Mathey

    European Heart Journal
    |May 1, 1985
    PubMed
    Summary

    Flashing tomosynthesis reliably detects coronary artery stenoses and occlusions, comparable to standard cineangiography. This advanced imaging technique reduces contrast and radiation exposure, though dynamic events are not yet evaluated.

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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 Technology

    Background:

    • Coronary artery disease (CAD) diagnosis relies on invasive or less sensitive imaging.
    • Standard coronary cineangiography is effective but involves risks.
    • Novel imaging techniques are needed to improve CAD assessment.

    Purpose of the Study:

    • To evaluate the efficacy of flashing tomosynthesis in detecting coronary arterial stenoses.
    • To compare flashing tomosynthesis with standard coronary cineangiography for CAD evaluation.
    • To assess the safety and efficiency benefits of flashing tomosynthesis.

    Main Methods:

    • Thirty-four patients with coronary artery disease were included.
    • Coronary artery imaging was performed using standard 35 mm coronary cineangiography.
    • Flashing tomosynthesis was utilized to assess stenotic coronary arteries.

    Main Results:

    • Flashing tomosynthesis accurately identified all occluded vessels and coronary stenoses detected by cineangiography.
    • A high correlation (r = 0.85, P < 0.001) was found between stenosis degrees from both techniques.
    • Flashing tomosynthesis required less contrast medium, shorter investigation time, and reduced radiation exposure.

    Conclusions:

    • Flashing tomosynthesis is a reliable method for evaluating coronary arterial stenoses and occlusions.
    • The technique offers advantages in reduced contrast and radiation exposure.
    • Further technological advancements are required for widespread clinical adoption, particularly for dynamic event assessment.