What is a common diagnostic tool for identifying herniated discs?

MRI (Magnetic Resonance Imaging) is the most common diagnostic tool for identifying herniated discs because it offers detailed images of soft tissues, including the spinal cord, nerves, and intervertebral discs. The high-resolution images produced by MRI allow healthcare professionals to visualize the herniation accurately and assess its impact on surrounding structures, such as the nerve roots and spinal canal.

In contrast, X-rays primarily reveal bone structures and are not effective for visualizing soft tissue issues like herniated discs. Electromyography measures electrical activity in muscles and can help evaluate nerve function, but it does not provide images of the discs themselves. Ultrasound can be useful for examining some superficial soft tissues, but it is not the standard method for assessing spinal conditions like herniated discs. Therefore, MRI is the preferred choice among these options for diagnosing herniated discs due to its ability to give a clear and comprehensive view of spinal structures.