<prompt> Occult fracture of neck femur are best diagnosed by:Bone ScanMRIX- RayCT scan  <response>: B i.e. MRI If the initial x - rays are normal but pain persists, the patient still should be examined for a suspected femoral neck fracture occult fracture T1 weighted MRI performed with in 24 hours is more sensitiveQ 100 sensitivity than that of bone scan performed 72 hours after admission 93 sensitivity. Traditionally, bone scans has been thought to be unreliable before 48 - 72 hours after fracture. Because bone scans must be delayed for upto 72 hours in older patients with osteopenia to ensure accurate diagnosis; MRI is preferred to obtain an earlier diagnosis and shoen the hospital stay. 