2nd September 2020

A 64-year-old male presents with recurrent falls

A 64-year-old male presents with recurrent falls. His wife has noticed that recently he has had difficulty speaking and is drooling uncontrollably, particularly towards the end of the day. Given his age and presentation, the doctor suspects motor neurone disease, although it may also be another neurological condition. Which of the following investigations is most appropriate for simultaneously ruling out a brain tumour, multiple sclerosis and Parkinson’s disease from the differential diagnoses? 

Select the SINGLE most appropriate option from the list below. Select ONE option only.