MSFinals-5714

MSFinals-5714

A 45-year-old woman presents with sudden-onset shortness of breath and pleuritic chest pain. After workup, including blood tests, an electrocardiogram (ECG) and a chest X-ray, a diagnosis of pulmonary embolism (PE) is suspected.
In which situation might a ventilation/perfusion (V/Q) scan be preferred to a computerised tomography pulmonary angiogram (CTPA) to confirm a diagnosis of PE?