Investigation of choice for pulmonary embolism –
No option is absolutely correct.
The pulmonary angiography has traditionally been considered as the gold standard test for pulmonary embolism. But, now a days CT contrast (MDCTA) is the investigation of choice.
Amongst the given options, lung V/Q scan is the best option as it is the 2nd choice of the investigation after MDCTA.
CT scan
Contrast CT
Ventilation - Perfusion scan
MRI