Orthopaedics Which one of the following is the investigation of choice for evaluation of suspected Perthes’ disease? A Plain X-ray B Ultrasonography (US) C Computed Tomography (CT) D Magnetic Resonance Imaging (MRI) 💡 Explanation Which one of the following is the investigation of choice for evaluation of suspected Perthes' disease? ✓ Correct Answer: D. Magnetic Resonance Imaging (MRI)