film artifact artificial images on x-ray films due to storage, handling, or processing. distortion or fuzziness of an image caused by manipulation, such as during compression of a digital file. waveform of the ECG signal is widely used for the diagnosis of cardiac. This can mimic tachyarrhythmias but can be identified if one of the leads is unaffected at the same time as the others, or by identifying regular R waves that march through the artifact. Attenuation artifact: classically diaphragm (inferior wall) or breast (anterior wall) any artificial product a structure or appearance that is not natural, but is due to manipulation. After a heart attack (myocardial infarction, or MI) to assess heart muscle damage To assess blood flow to areas of the heart muscle after coronary artery bypass surgery, angioplasty, or stent placement. Motion artifact is defined as the effects induced by the movements of the subject. Artifact Artifact can be a result of the patient (eg tremor) or external causes (eg electrode malfunction, electromagnetic interference).This is when the heart beats irregularly, too slow, or too fast. PACs are the most common variety of cardiac arrhythmias. Hibernating myocardium: chronically ischemic myocardium, looks like infarct but has perfusion (TL) or metabolism (FDG) when viability study is performed : a product of artificial character (as in a scientific test) due usually to extraneous (such as human) agency. The atria are two chambers in the heart that receive blood from the veins.
LBBB: rate dependent perfusion defect in the septal wallįixed Perfusion Defect: (decreased at stress and rest).Patient motion: determine by reviewing cine or sinogram, fix by motion correction or rescanning.Differential attenuation artifact: can be difficult to differentiate from ischemia, rescan in different position (prone) or reposition breast if it appears to be the issue and rescan.Reversible Perfusion Defect: (decreased at stress and better at rest)
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