Related Experiment Video
Updated: Jun 12, 2026
10:28
Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
Integrated anatomy and viability assessment PET-CT.
Antti Saraste1, Heikki Ukkonen, Sami Kajander
1Turku PET Centre, University of Turku, Turku, Finland.
Summary
Myocardial viability testing using 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) identifies patients who benefit from revascularization. Hybrid PET-CT scanners enhance this assessment by combining functional and anatomical data for improved cardiac care.
Area of Science:
- Cardiology
- Nuclear Medicine
- Radiology
Background:
- Myocardial viability testing is crucial for patients with ischaemic heart disease and left ventricular dysfunction.
- 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) is the gold standard for assessing myocardial glucose metabolism and predicting revascularization outcomes.
- Hybrid PET-CT scanners integrate PET and CT imaging, offering synergistic benefits for cardiac assessment.
Purpose of the Study:
- To review the principles of myocardial viability assessment using PET.
- To discuss the advantages and applications of hybrid PET-CT technology in viability imaging.
- To highlight the combined use of FDG-PET and CT angiography for enhanced diagnostic accuracy.
Main Methods:
- Review of current literature on myocardial viability testing.
- Explanation of FDG-PET principles for metabolic assessment.
- Discussion of hybrid PET-CT capabilities, including integrated imaging and CT-based viability techniques like delayed-enhancement imaging.
Main Results:
- FDG-PET is highly sensitive for detecting myocardial viability and predicting functional recovery post-revascularization.
- Hybrid PET-CT allows for precise anatomical localization of metabolic activity by merging FDG-PET and coronary CT angiography data.
- CT-based delayed-enhancement imaging is emerging as a complementary tool for assessing myocardial infarction with acceptable radiation exposure.
Conclusions:
- Hybrid PET-CT significantly enhances myocardial viability assessment by combining functional (FDG-PET) and anatomical (CT) information.
- This integrated approach improves the identification of patients who will benefit from revascularization, leading to better cardiac function and prognosis.
- Future research directions include further optimization of CT-based viability techniques within the hybrid imaging framework.
Related Concept Videos
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...
01:27Imaging 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...
01:13Radiological 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...
01:29Positron Emission Tomography
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 being...
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 being...
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...