Anyone considering an MRI when there are concerns about the spine/discs etc should bear in mind that when lying down there is a lot less load on the spine and thus imaging may not show the true situation.
In Sydney they have an "upright" MRI scanner that can take the imaging while the patient stands. The pricing is very reasonable approx I paid $ for a lumbar MRI. Western Imaging
An MRI could be combined with a weekend in Sydney and a show. Affter landing at Sydney Airport am I caught the train to Central Station and another train to Blacktown. I had my MRI and was back in town by pm
Have a look at this very informative brochure with image comparisons of recumbent (laying flat) and upright.
DIRECTIONS TO WESTERN IMAGING BLACKTOWN