Related Experiment Video
Updated: Jun 25, 2026
11:09
High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals
Published on: December 16, 2022
Patient dose in cardiac radiology
Andreas I Stratis1, Prodromos L Anthopoulos, Isidoros P Gavaliatsis
1Medical Physics Laboratory, Evangelismos General Hospital, Athens, Greece.
Summary
Patient radiation dose during cardiac procedures was estimated using dose-area product (DAP). While DAP values were within reference levels, fluoroscopy times were longer, indicating potential areas for optimization in X-ray imaging protocols.
Area of Science:
- Medical Imaging
- Cardiology
- Radiation Dosimetry
Background:
- Interventional cardiology procedures using X-ray imaging can lead to high patient skin doses, potentially causing necrosis.
- Repetitive procedures and long fluoroscopy times contribute significantly to radiation exposure.
Purpose of the Study:
- To estimate patient radiation dose during coronary angiography and angioplasty.
- To utilize the dose-area product (DAP) measuring system for dose assessment.
Main Methods:
- Collected dose-area product (DAP), fluoroscopy time, and imaging parameters for 108 coronary angiography and 101 coronary angioplasty procedures.
- Used data from a dedicated X-ray machine in a hospital's haemodynamic department.
Main Results:
- Median DAP values were 19.96 Gy.cm² for angiography and 40.17 Gy.cm² for angioplasty.
- Strong correlations were found between DAP, fluoroscopy time, and the number of frames.
- Mean fluoroscopy time per patient was longer than in some other studies.
Conclusions:
- Patient entrance skin dose was lower than reported in other studies.
- Current practices meet diagnostic reference levels for DAP and frame counts, but not for fluoroscopy time.
- Correlation between physician experience and DAP was not observed, likely due to not accounting for lesion complexity.
More Related Videos
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...
01:13Radiological 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...
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...
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...
01:30Radiological Investigation I: X-ray and CT
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 the...
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...
01:28Cardiac Catheterization I: Pre-Procedure Overview
Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...