How do you decide if a patient should get follow-up perfusion imaging after acute PE when they are minimally symptomatic?

I practice essentially as reflected in the most recent AHA/ACC/ACCP/CHEST/SCAI/SHM/SIR/SVM/SVN Guideline for the Diagnosis and Management of Acute Pulmonary Embolism in Adults.

Figure 8. Evaluating Ongoing Symptoms Following Acute PE - concisely outlines the workup of patients with ongoing symptoms f...