FIGURE 3. ROC curves of observers 1–3 of 3 different gestalt interpretations. (A) Gestalt interpretation of perfusion scintigraphy and chest radiography. (B) Gestalt interpretation of perfusion scintigraphy, chest radiography, and clinical information. (C) Gestalt interpretation of V/Q scintigraphy, chest radiography, and clinical information. Solid line, observer 1; dotted line, observer 2; dashed-dotted line, observer 3.

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