Angiography derived assessment of the coronary microcirculation: is it ready for prime time?

Concordance between vessel‐specific and vascular territory coronary functional assessment: A comparison of quantitative flow ratio and myocardial perfusion scintigraphy

“…Sometimes it is necessary to combine tools to define ischemia. [26][27][28] MPS diagnostic performance for detecting functional significance by QFR was assessed using ROC curves. We did not observe a significant increase in AUC, even with a decrease in QFR values (≤0.80 to ≤0.70), maintaining fair predictive performance of MPS.…”

“…Due to the multifactorial nature of ischemia, sometimes involving epicardial obstructive lesions, sometimes with the presence of CMD and even with a combination of these factors, it is clear the difficulty of measuring ischemia using one of the methods under study and even with some other current method. Sometimes it is necessary to combine tools to define ischemia 26–28 …”

Razão de fluxo quantitativo (QFR) na avaliação do significado funcional de estenoses de artérias coronárias: análise comparativa com a cintilografia de perfusão miocárdica

“…Devido ao caráter multifatorial da isquemia, ora envolvendo lesões obstrutivas epicárdicas, ora com a presença de DMC, e, até mesmo, com a combinação desses fatores, fica clara a dificuldade de mensurar a isquemia por um dos métodos em estudo e por algum outro atual método. Às vezes, é necessário combinar diferentes ferramentas para investigar a presença de isquemia de forma adequada[61][62][63] .A angiografia demonstrou maior concordância com o QFR do que com a CPM. aumentaram à medida que os valores de QFR diminuíram, indicando melhor desempenho preditivo da CPM.…”