Blauwet et al proposed criteria for diagnosing myocarditis on an MRI exam. The authors are from the Mayo Clinic.
MRI findings associated with myocarditis:
(1) an increase in the regional or global myocardial signal intensity in T2-weighted images
(2) an increase in the global myocardial early enhancement ratio (between myocardium and skeletal muscle) in a gadolinium-enhanced T1-weighted image
(3) one or more focal lesions showing delayed enhancement with a nonischemic regional distribution in a gadolinium-enhanced T1-weighted image
2 or 3 of the criteria
clinical suspicion of myocarditis
myocarditis (myocardial inflammation)
criterion 3 only
consistent with myocyte injury and/or scar secondary to myocardial inflammation
1 criterion present
repeat cardiac MRI in 1-2 weeks
0 criteria present
clinical suspicion of myocarditis AND recent onset of symptoms
Additional MRI findings that support the diagnosis of myocarditis:
(1) left ventricular dysfunction
(2) pericardial effusion
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Purpose: To evaluate a patient for myocarditis based on MRI findings and the criteria of Blauwet and Cooper.
Specialty: Cardiology, Infectious Diseases, Immunology/Rheumatology
Objective: imaging studies, laboratory tests, criteria for diagnosis
ICD-10: I09.0, I51.4,