A Study Evaluates the Role of MRI in Assessing the Potential

A study evaluates the role of MRI in assessing the potential for myocardial recovery after reperfusion.  A total of 185 patients undergoing coronary bypass surgery were evaluated by MRI for delayed gadolinium enhancement, indicative of myocardial scar tissue and therefore no viability.  Subsequently, the patients were followed for improvement in myocardial contractility after surgery.  The following results were obtained.

Which of the following best describes the specificity of MRI in assessing for scar tissue?

A) 82/85
B) 92/100
C) 92/95
D) 82/90
E) 100/185