Which diagnostic test is most commonly used for assessing stenosis?

The most commonly used diagnostic test for assessing stenosis is the MRI. This imaging technique provides detailed images of soft tissues, including blood vessels and the spinal cord, allowing for accurate visualization of any narrowing or obstruction caused by stenosis. MRI is especially beneficial because it can differentiate between various types of tissue, highlighting changes in structure and pathology associated with stenosis without exposing the patient to ionizing radiation.

In contrast, while an X-ray can provide some information on bony structures, it is limited in its ability to visualize soft tissue and subtle changes related to stenosis. CT scans are more detailed than X-rays and can be useful in certain contexts, but they also involve radiation exposure, making MRI a preferable initial choice for many practitioners. Ultrasound can be helpful in assessing vascular stenosis and is commonly used in peripheral vascular studies, but it is not typically the first-line imaging technique for spinal stenosis or for comprehensive soft tissue evaluation.