Head Numbness: MRI Concerns with Metal Implants

Numbness in the head?

Hello doctor, I have been troubled by headaches and a feeling of heaviness in my head.
Recently, I often experience a tingling sensation in a specific area of my head (I can't tell if it's on the scalp or inside the skull).
I have seen a doctor, but no cause has been found, so I would like to arrange for an MRI (I had a CT scan six months ago without contrast, and the doctor said there were no abnormalities in the hard tissues.
Considering radiation exposure, I do not plan to have another CT scan soon).
However, I have heard that if there is metal in the body, an MRI cannot be performed, while others say it is not a problem.
I am concerned because I have a steel plate in my upper arm due to a fracture.
Will this affect the MRI of my head?

Xiao Meng, 30~39 year old female. Ask Date: 2016/03/22

Dr. Zhang Junwei reply Neurosurgery

None.

Reply Date: 2016/03/22

More Info

When considering an MRI (Magnetic Resonance Imaging) scan, especially in the context of having metal implants such as a steel bone plate from a previous fracture, it's important to understand how these implants can affect the imaging process and the overall safety of the procedure.

Firstly, MRI is a non-invasive imaging technique that uses strong magnetic fields and radio waves to generate detailed images of organs and tissues inside the body. Unlike CT scans, MRI does not involve ionizing radiation, which makes it a safer option for repeated imaging. However, the presence of metal in the body can complicate MRI scans.

In your case, you mentioned having a steel bone plate in your arm due to a fracture. Generally, most modern metal implants, including those made from titanium or stainless steel, are MRI-compatible. This means they do not pose a significant risk during the MRI procedure. However, there are a few considerations to keep in mind:
1. Type of Metal: The specific type of metal used in your implant is crucial. Titanium is typically safe for MRI, while some other metals may not be. Steel implants can sometimes cause artifacts (distortions) in the images, but this usually does not prevent the MRI from being performed.

2. Location of the Implant: Since your implant is in your arm, it is unlikely to interfere with the imaging of your head. MRI machines can focus on specific areas of the body, and as long as the area being scanned (in this case, your head) is not directly affected by the metal implant, the quality of the images should remain intact.

3. Artifacts: While the presence of metal can create artifacts in the images, these are typically localized to the area of the implant. For example, if the MRI is focused on your head, the images may still be clear, although there could be some distortion if the field of view includes the arm with the implant.

4. Consultation with Your Doctor: It is essential to discuss your specific situation with your healthcare provider or the radiologist performing the MRI. They can assess the type of metal in your implant and determine if any additional precautions need to be taken. They may also adjust the MRI settings to minimize any potential artifacts caused by the metal.

5. Safety Protocols: Before undergoing an MRI, you will be required to fill out a safety questionnaire regarding any implants, pacemakers, or other metal objects in your body. This information helps the medical team ensure your safety and the effectiveness of the scan.

In summary, having a steel bone plate in your arm should not prevent you from undergoing an MRI of your head. The procedure is generally safe, and the imaging quality should not be significantly compromised. However, it is crucial to communicate openly with your healthcare provider about your concerns and any relevant medical history. They will guide you through the process and ensure that the MRI is performed safely and effectively, allowing for a thorough evaluation of your head and any underlying issues contributing to your symptoms of headache, dizziness, and numbness.

Similar Q&A

Safety Concerns of Metal Dental Implants During MRI Scans

Hello, doctor. Due to temporomandibular joint (TMJ) dysfunction, my doctor has arranged for me to undergo an MRI for further examination. I would like to ask if there are any safety concerns regarding the metal posts that were placed in the crowns of three teeth that have undergo...

Dr. Ye Weicheng reply Radiology
Metal dental implants do not pose safety concerns when entering an MRI room, so there is no need to worry. As for whether they will affect the examination results, generally they do not, unless the area being examined coincides with the location of the dental implant.

Impact of Dental Implants on MRI Accuracy: What You Need to Know

Hello, I have dental prosthetics (fixed and non-removable, including three teeth: incisors and canines, some of which are made of metal). I have completed a brain MRI and would like to know if the metal in my dental prosthetics could affect the accuracy and interpretation of the ...

Dr. Ding Xianwei reply Neurosurgery
Your question should be directed to the radiology department for clarification.

Understanding Severe Headaches: Seeking Second Opinions and MRI Benefits

Hello, I experienced a severe headache for the first time in early March, accompanied by pain in the upper abdomen above the navel, which felt like a twisting pain. It lasted for 1 to 2 hours and then subsided. During my trip abroad from late April to early May, I had three more ...

Dr. Jiang Junyi reply Neurology
Hello: Due to the longer examination time and higher costs associated with magnetic resonance imaging (MRI), the National Health Insurance Administration has strengthened its review process to prevent misuse by physicians, especially when used as a preliminary screening tool. How...

Understanding Facial and Scalp Numbness: Causes and Next Steps

Hello, doctor. For the past two months, I have been experiencing intermittent numbness on the right side of my scalp and cheek, and occasionally around my nose. I do not have diabetes, hypertension, or heart disease (all tests have been done). Additionally, my cheeks have been so...

Dr. Jiang Junyi reply Neurology
Hello, Miss: You mentioned that "the right side of the scalp and cheek area experiences intermittent numbness, and occasionally there is a tingling sensation near the nose." The MRI report did not reveal any lesions related to the trigeminal nerve. The symptoms should b...