Question normal

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?
More details in:
youtu.be/8C0ASih4SWI
pubmed.ncbi.nlm.nih.gov/332173...

I ask this because I deduce that those who had such a diagnosis were subjected to prolonged anticoagulation afterwards?