![]() What is a diaphragmatic attenuation artifact? This is called a “reversible defect.” Scarred myocardium from prior infarct will not take up tracer at all and is referred to as a “fixed defect.” What is a reversible defect on a stress test?Ī coronary stenosis is detected when a myocardial segment takes up the nuclear tracer at rest, but not during cardiac stress. As a result of artifacts, normal components of the EKG can be distorted. What does soft tissue attenuation artifact mean?Īfter a stress test, your physician may mention that you have “soft tissue artifact,” or “soft tissue attenuation.” What this means is that soft tissue, such as breast tissue, is showing up on the image created by the stress test.Įlectrocardiograph (EKG) artifacts are defined as EKG abnormalities, which are a measurement of cardiac potentials on the body surface and are not related to electrical activity of the heart. People often think of medical tests as definitive - the stress test shows that either you have blockages in the arteries in your heart or you don’t - but it usually is not so clear. An artifact, in this context, is anything that can keep the test from being interpreted correctly.What does artifact mean on a stress test? 5 What is attenuation artifact in stress test?.4 Can you pass a stress test and still have blockage?.3 How does attenuation affect an image?.2 What is a reversible defect on a stress test?.1 What does artifact mean on a stress test?.If you think you may have a medical emergency, call your physician or 911 immediately. By using this Site you agree to the following Terms and Conditions. We offer this Site AS IS and without any warranties. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. The diaphragm is very thin and does not couse the attenuation, the diaphragmatic portion of the LV ( the inferior wall) is the affected, though". ![]() "The phenomenon is often called diaphragmatic attenuation, which is a misnomer. The inferior wall is furthest away from the detector, photons from the inferior wall thus travel longer distances and are attenuated (thinning, weakening, diluting), giving the appearance of reduced uptake. For some insight mild reduced tracer "uptake" in the inferior wall is commonly seen in men with large chests. If a posterior defect is present in this type of patient it is suggested he be further evaluated to rule out artifact". "It is suggested that a male with a flat, wide chest is more prone to posterior myocardial attenuation. Diaphragm is of no significance and a misnomer, but further evaluation for posterior myocardium attenuation (medically significant) to determine if there is a posterior defect and rule out an artifact. In the past this has been thought due to the position of the diaphragm. In radionuclide cardiac imaging, an inferior wall artifactual defect, so called diaphragmatic attenuation, is particularly common and vexing The most common artifact on thallium scans in our laboratory has been posterior myocardial attenuation, mostly in males. ![]() Avoidance of falsely positive results depends on distinguishing reality from artifact, in turn depending on images of highest quality.
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