Does the Position of the Arm during Intravenous Contrast Administration alter Image Quality in Computed Tomography Pulmonary Angiography (CTPA)?

Pulmonary embolism (PE) is the sudden blocking of a pulmonary artery, commonly by a blood clot.PE can be very difficult to diagnose clinically and is potentially fatal carrying a 30% mortality rate if untreated 1. In the UK 10% of all hospital deaths equating to 1% of all hospital admissions have been shown to be attributable to PE 2.sch_radpub91