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Taking into account the report by Dhawan RT et al. mentioning the possibility of false-negative results in some pulmonary angiotomographies, is it known how many of the patients who had a thrombotic event were diagnosed with planar ventilation-perfusion scan or SPECT ventilation perfusion (V/Q) scan?
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I ask this because I deduce that those who had such a diagnosis were subjected to prolonged anticoagulation afterwards?