MRI Pericardial Inflammation Index (PII) Calculator

MRI Pericardial Inflammation Index (PII): Comprehensive Explanation and Clinical Context
The MRI Pericardial Inflammation Index (PII) is a composite score derived from key MRI parameters: pericardial thickness, T2-STIR signal intensity, and LGE intensity ratio. This index aids in assessing the extent of pericardial inflammation, which is crucial for diagnosing conditions like acute pericarditis and evaluating the risk of recurrence. A higher PII suggests more significant inflammation, correlating with increased risk of adverse outcomes such as recurrent pericarditis and pericardial constriction. Clinicians can utilize the PII to guide therapeutic decisions and monitor disease progression.

Reference:
Conte E, et al. Cardiac MRI after first episode of acute pericarditis. Int J Cardiol. 2022;354:63–67. doi:10.1016/j.ijcard.2022.03.007

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