Related Experiment Video
Updated: Jun 10, 2026
11:38
Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
Published on: July 3, 2014
Cardiac computed tomography technology and dose-reduction strategies.
James P Earls1, Jonathon Leipsic
1Fairfax Radiology Consultants PC, VA 22031, USA. jpearls@yahoo.com
Radiologic Clinics of North America
|August 14, 2010
Summary
Coronary computed tomography angiography (CCTA) has advanced significantly since 1999. Modern CCTA offers improved resolution and dose reduction techniques for assessing coronary artery disease.
Area of Science:
- Cardiovascular imaging
- Radiology
- Medical technology
Background:
- Coronary computed tomography angiography (CCTA) is crucial for diagnosing coronary artery disease.
- It is indicated for symptomatic patients with low-to-intermediate risk of obstructive coronary disease.
Purpose of the Study:
- To review technological advancements in cardiac CT.
- To discuss current status and recent developments in CCTA technology.
- To highlight dose reduction techniques in cardiac CT.
Main Methods:
- Review of technological evolution in CT scanners from 4-slice to modern multi-detector systems.
- Analysis of improvements in spatial, temporal, and contrast resolution.
- Examination of advancements in z-axis coverage and dose reduction strategies.
Main Results:
- Significant improvements in spatial resolution (submillimeter) and temporal resolution.
- Enhanced contrast delivery and visualization of coronary arteries.
- Development of various dose reduction techniques for patient safety.
Conclusions:
- CCTA technology has rapidly evolved, enhancing diagnostic capabilities for coronary artery disease.
- Ongoing advancements focus on image quality, speed, and radiation safety.
- CCTA remains a vital non-invasive tool for cardiac assessment.
Related Concept Videos
01:28Imaging 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...
01:10Computed 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...
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...
01:20Imaging Studies for Cardiovascular System III: X-Ray
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
01:27Imaging 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...
01:25Imaging 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...
01:25Imaging Studies II: Positron Emission Tomography and Scintigraphy
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET