The brachial plexus refers to a group of nerves traveling between the shoulder and neck. The brachial plexus provides both sensory and motor innervation to the upper extremity. Magnetic Resonance Imaging (MRI) is considered to be the best exam to evaluate causes of brachial plexopathy.
Plexopathy is a disorder affecting a network of nerves, blood vessels or lymph vessels. The region of nerves it affects are at the brachial or lumbosacral plexus. Symptoms include pain, loss of motor control and sensory deficits.
Magnetic Resonance Imaging is widely trusted by physicians because it does not use ionizing radiation. The exam itself is noninvasive, comfortable for most patients, and produces no known side effects, making it a safe and reliable diagnostic tool.
When would I get a Brachial Plexus MRI?
Your medical provider may recommend an MRI of the brachial plexus in order evaluate:
- trauma or injury to the brachial plexus region
- upper extremity pain
- numbness
- upper extremity weakness
- a loss of muscle mass, also known as muscle wasting
What Will I Experience During a Brachial Plexus MRI?
A Brachial Plexus MRI focuses on the network of nerves that runs from the neck into the shoulder and arm. During the scan, you will lie on your back while specialized imaging coils are positioned around the upper chest and shoulder area to capture detailed nerve images.
The procedure is noninvasive and does not cause pain. It is important to remain as still as possible so the fine nerve structures can be clearly visualized. You may hear tapping or thumping sounds while the scanner sequences are running — this is normal and part of the imaging process.
In some cases, contrast material may be used to better evaluate inflammation, compression, or injury. If contrast is required, it will be administered through an IV before or during the study. Most Brachial Plexus MRI exams are completed within 30 to 45 minutes. You will be able to speak with the technologist at any time during the exam for reassurance or assistance.
