<prompt> In pulmonary embolism, findings in perfusion scan isa Perfusion segmental defectb Perfusion defect with normal lung scan radiographyc Tenting of diaphragmd Normal chest scanabdbcdabcab  <response>: At least 2 of patients with PE have normal VQ scan and 4 of patients with normal VQ scan have pulmonary embolism.41 of patients with PE have high probability scan which includes 2 or more segmental perfusion defects with normal chest radiograph and normal lung ventilation scan. 