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FIGURE 2. Intraobserver variability of observer 1 and interobserver variability of observers 1 and 2 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. •, Intraobserver variability of observer 1; 
, interobserver variability of observers 1 and 2.
