What is attenuation artifact mean? What does subdiaphragmatic mean? In radionuclide cardiac imaging, an inferior wall artifactual defect, so called “diaphragmatic attenuation”, is particularly common and vexing. Avoidance of falsely positive results depends on distinguishing reality from artifact, in turn depending on images of highest quality. The heart muscle has a tight covering that surrounds it, a lining sac called the pericardium (peri=around+cardium=heart).Ībstract. What does diaphragmatic attenuation artifact mean? What is soft tissue around the heart? Internal electrical artifacts can be caused by tremors, muscle shivering, hiccups or, as in the present case, medical devices. External artifacts are usually caused by line current, which has a frequency of 50 Hz or 60 Hz. What does artifact mean in medical terms?Ĭauses of electrical artifacts on ECGs are manifold. Physicians typically learn to recognize some of these artifacts to avoid mistaking them for actual pathology. In medical imaging, artifacts are misrepresentations of tissue structures produced by imaging techniques such as ultrasound, X-ray, CT scan, and magnetic resonance imaging (MRI). “Attenuation artifact” observed in a nuclear stress test is due to the reduction in the intensity / strength of signal when it travels through various body tissues of different densities, such as breast tissues, chest wall, and organs under the diaphragm. What is a diaphragmatic attenuation artifact? What is breast soft tissue attenuation artifact?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. 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. Superimposition of breast tissue over the heart may result in linear areas of relatively increased activity, which is believed to be caused by small-angle scatter from the breast tissue fold.ĭear M.J.N.: An artifact, in this context, is anything that can keep the test from being interpreted correctly. 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.īreast artifacts are the most frequent causes of false positive planar images in female subjects. An artifact, in this context, is anything that can keep the test from being interpreted correctly.What does artifact mean on a stress test?
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