What is PET viability?
Positron emission tomography (PET) viability imaging is used to assess how much heart muscle has been damaged by a heart attack or heart disease. This test is used to determine whether a patient may need angiography, cardiac bypass surgery, heart transplant or other procedures.
What is a viability test?
A cardiac viability scan is done to assess how much heart muscle has. been damaged by a heart attack or heart disease. It checks: • Blood supply to your heart. • How well your heart muscle works (viability)
When should I use FDG PET?
The role of this procedure is to detect metabolically active malignant lesions including lung cancer, colorectal cancer, lymphoma, melanoma, breast cancer, ovarian cancer, brain cancer and multiple myeloma. FDG-PET scan may also be used to stage and monitor the response to therapy of malignant disease.
How do you assess myocardial viability?
Echocardiography and thallium or technetium imaging are methods currently used to assess myocardial viability because of their availability and relatively low cost. Although positron emission tomography (PET) has been considered the gold standard, its unavailability may limit its clinical use.
What is hibernating myocardium?
The term “hibernating myocardium” refers to the presence of persistently impaired LV function at rest, due to a reduced coronary blood flow that can be partially or completely restored to normal after revascularization.
What is a cardiac PET scan?
A heart positron emission tomography (PET) scan is an imaging test that uses a radioactive substance called a tracer to look for disease or poor blood flow in the heart.
What does a PET scan of the heart show?
This PET image shows an area of reduced blood flow from one of the arteries that feeds the heart. This information may help doctors decide whether to suggest bypass surgery or angioplasty to restore that blood flow.
Why would a cardiologist order a PET scan?
A heart PET scan can detect whether areas of your heart muscle are receiving enough blood, if there is heart damage or scar tissue in the heart, or if there is a buildup of abnormal substances in the heart muscle.
What is difference between FDG PET and PET CT?
However, in the majority of cases, FDG PET is a sensitive imaging modality for the detection, staging, re-staging as well as for assessment of therapy response in oncology [6, 17–25]. In contrast to PET, computed tomography (CT) uses an x-ray beam to generate tomographic images.
What is thallium viability?
A Nuclear Medicine Thallium Viability Scan is a test used to evaluate the blood flow to the heart. After a heart attack (myocardial infarction), some of the heart muscle may be permanently damaged or scarred. Once this occurs, the area affected will cease to function properly.
What is the difference between stunned and hibernating myocardium?
Definitions: Stunned myocardium is viable myocardium salvaged by coronary reperfusion that exhibits prolonged postischemic dysfunction after reperfusion. Hibernating myocardium is ischemic myocardium supplied by a narrowed coronary artery in which ischemic cells remain viable but contraction is chronically depressed.
Is 18F-FDG PET a useful tool to assess myocardial viability?
Conclusion 18F-FDG PET has high diagnostic value in the assessment of myocardial viability in patients with known CAD when compared to SPECT and echocardiography. Further studies based on a large cohort with incorporation of 18F-FDG PET into patient management are warranted.
What is the accuracy of FDG PET scan?
FDG-PET was performed in 518 patients (16.6%) and was more frequently used in those with prosthetic IE (25%) and cardiac device-related IE (26%) than in native valve endocarditis (9.5%). The accuracy of FDG-PET ranged from 67% in prosthetic valve IE to 28% in native valve endocarditis and 16% in cardiac device-related IE.25
How accurate is FDG-PET for cardiac endocarditis?
The accuracy of FDG-PET ranged from 67% in prosthetic valve IE to 28% in native valve endocarditis and 16% in cardiac device-related IE.25 As previously noted, patient preparation is key to the success of any cardiac PET imaging.
What is the diagnostic value of SPECT and pet in cardiac viability?
Diagnostic sensitivity of SPECT, PET and echocardiography was 90%, 100% and 80% at patient-based assessment, respectively. Excellent agreement was achieved between inter-observer and intra-observer agreement of the diagnostic value of SPECT and PET in myocardial viability (k= 0.9). Conclusion