How do members experience Ventilation perfusion scan? Top 5 reported purposes & perceived effectiveness Purpose Patients Evaluations Perceived Effectiveness This item is relevant to you: Pulmonary hypertension 2 0 0% 0% 0% 0% 0% This item is relevant to you: Asthma 1 0 0% 0% 0% 0% 0% This item is relevant to you: Diagnostic assessment 1 0 0% 0% 0% 0% 0%