WebNov 2, 2024 · The prone position, which moves the diaphragm downward and the heart upward, enlarges the distance between the inferior wall of the left ventricle and diaphragm, and minimizes diaphragmatic attenuation.19 Furthermore, it increases specificity without compromising sensitivity for the diagnosis of CAD.18 Segall and Davis10 demonstrated … WebJan 29, 2024 · Soft tissue attenuation may result in an apparent fixed or reversible perfusion abnormality or defect. Fixed anatomic structures generally will produce the …
Review of SPECT Myocardial Perfusion Imaging - JAOCR
WebDr. Fidias De Leon answered. Nuclear Medicine 23 years experience. Not clear: May be scar from old infarct or technical defect (attenuation) which is not considered disease. … WebNov 8, 2011 · The CT-based attenuation maps obtained with hybrid SPECT/CT systems also have been useful for improving diagnostic accuracy. However, when attenuation correction and other advanced image data postprocessing techniques are used, unexpected artifacts may arise. how many calories in a can of mini ravioli
Recognizing and preventing artifacts with SPECT and PET imaging
WebOct 9, 2024 · What does diaphragmatic attenuation mean? Abstract. Avoidance of falsely positive results depends on distinguishing reality from artifact, in turn depending on images of highest quality. In radionuclide cardiac imaging, an inferior wall artifactual defect, so called “diaphragmatic attenuation”, is particularly common and vexing. WebDec 1, 2006 · The effects of diaphragmatic attenuation may be lessened by imaging the patient in the prone position. However, prone imaging … WebMay 13, 2012 · the-good-doctor is online now Questions the Experts can answer 1. What is a nuclear stress test? 2. What does an abnormal SPECT Myoview stress test mean? 3. What is a fixed anterior wall defect? 4. What is a possible previous anterior wall infarction? 5. What is mild to moderate reversible anterior wall ischemia? Related Cardiology … high res eyes