This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thoracic and Lumbosacral Spine Injuries, Subject name: Orthopaedics
The investigation of choice to detect a prolapsed intervertebral disc is? 
Select and explain. 
A. C T Scan, B. MRI, C. Myelography, D. Radiograph
B: MRI
Answer: B: MRI 
Explanation: Ans. is 'b' i.e., MRI MRI is the investigation of choice for P1D because it shows the following structures clearlyo Prolapse of disco Compression of cordo Any problems with the discs above and belowo Canal Stneosiso Associated features like Ligamentum flavum hypertrophy and facetal arthropathy