brain mapping: functional MRI and DTI. Functional MRI (magnetic resonance imaging) is a noninvasive diagnostic test that measures small changes in blood flow as a person performs tasks while in the MRI scanner. Functional MRI detects the brain in action (e.g., speaking or moving).
Back injections may help treat two major back pain problems: radiculopathy and spinal stenosis. Doctors also use injections for other types of back pain. Sometimes, they also use them to help find out what's causing the pain. Radiculopathy refers to inflammation or damage to a nerve usually in the neck or the low back.
Local Steroid Injections. If you have an inflamed or swollen joint, or if you have pain or inflammation near a joint, your doctor or physiotherapist may inject a steroid preparation into the affected area. It is known as a local injection because it acts only in that area.1  Injecting into a joint is called an 'intra-articular' injection.ou may take other medicines with steroid injections. However, if you are taking a drug that thins the blood (an anticoagulant) such as warfarin, it is less likely that you will be offered an injection because of the risk of bleeding into the joint.