“…The main goal of the diagnostic approach is to reduce the need for pulmonary angiography, is the gold standard for PE, as ISSN 0970-938X www.biomedres.info much as possible, which is invasive, expensive, not always easily accessible, and has certain morbidity and mortality for the treatment decision by using non-invasive methods as combination. For this purpose, different diagnostic algorithms including various diagnosis methods such as empirical clinical evaluation, d-dimer, lower extremity ultrasonography (USG), serial venous USG, ventilation-perfusion (V/Q) scintigraphy and computerized tomography pulmonary angiography (CTPA) [15,16].…”