What procedure involves injecting dye into a joint to obtain detailed images during an MRI?

The procedure that involves injecting dye into a joint to obtain detailed images during an MRI is MRI arthrography. This technique enhances the quality of the images captured during the MRI by using a contrast agent, which helps to delineate the structures of the joint more clearly. By injecting the dye directly into the joint space, MRI arthrography improves the visualization of soft tissues such as ligaments, cartilage, and the synovium, which may not be as distinguishable in a standard MRI without contrast.

The use of MRI arthrography is particularly beneficial for diagnosing joint conditions or injuries because the contrast agent provides an enhanced view, allowing for a more accurate assessment of any pathologies present. It is commonly used for examining joints like the shoulder, knee, and hip, where detailed visualization is critical for effective diagnosis and treatment planning.