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PYP Quantitative Uptake Index (QUI) Calculator

PYP Quantitative Uptake Index (QUI): Explanation and Clinical Context The PYP Quantitative Uptake Index (QUI) is a ratio of the radiotracer counts measured in the myocardial region of interest (ROI) to the contralateral chest ROI during 99mTc-Pyrophosphate (PYP) scintigraphy. It is used to quantify myocardial uptake and improve the diagnostic accuracy for transthyretin cardiac amyloidosis (ATTR-CA). A higher QUI valu

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PYP Scintigraphy Visual Score Calculator

PYP Scintigraphy Visual Score: Explanation and Clinical Context PYP (99mTechnetium-Pyrophosphate) scintigraphy is a non-invasive imaging technique used to detect cardiac amyloidosis, particularly transthyretin amyloidosis (ATTR-CM). The visual score ranges from 0 to 3 based on myocardial radiotracer uptake relative to bone: - Grade 0: No cardiac uptake; ATTR-CM is very unlikely. - Grade 1: Mild uptake, less than bone