Magnetic resonance (eg, proton) imaging, brain (including brain stem); without contrast material
CPT4 code
Name of the Procedure:
Magnetic Resonance Imaging (MRI) of the Brain without Contrast Material
Common Names: MRI Brain, MRI Head
Technical Terms: Neuroimaging, Proton MRI
Summary
Magnetic Resonance Imaging (MRI) of the Brain without contrast material is a non-invasive imaging technique used to create detailed pictures of the brain and brain stem. Unlike some other MRI procedures, this scan is done without the injection of contrast dyes into the bloodstream.
Purpose
This procedure is used to examine brain structures in high detail to diagnose or monitor conditions such as tumors, strokes, congenital abnormalities, infections, multiple sclerosis, and brain injuries. The goal is to provide clear and accurate imaging to guide treatment decisions.
Indications
- Persistent headaches or migraines
- Seizures
- Symptoms of stroke
- Neurodegenerative diseases
- Unexplained neurological symptoms (e.g., loss of vision, hearing, or balance)
- Brain lesions or tumors
- Developmental anomalies
Preparation
- No dietary restrictions or fasting required.
- Patients should remove all metal objects (jewelry, piercings, watches) before the scan.
- Inform your doctor of any medical implants (e.g., pacemakers, cochlear implants).
- Prior diagnostic tests are not typically required unless specified by your physician.
Procedure Description
- The patient lies down on the MRI table.
- The healthcare provider ensures the patient is comfortable and provides earplugs or headphones to block out loud noises from the machine.
- The table slides into the MRI scanner, which is a large tube.
- The patient must remain still while a series of magnetic fields and radio waves create images of the brain.
- The entire procedure is monitored, and patients can communicate with the technician via an intercom.
Duration
The procedure typically takes between 30 to 60 minutes.
Setting
This procedure is performed in a hospital's radiology department or an outpatient imaging center.
Personnel
- Radiologist
- MRI Technician
- Sometimes a nurse or physician's assistant, for support and patient care
Risks and Complications
- Claustrophobia or discomfort due to being in an enclosed space
- Movement artifacts in images if the patient moves during the scan
- Rarely, some patients may have temporary dizziness or slight nausea post-scan
Benefits
- Non-invasive with no exposure to ionizing radiation
- Highly detailed images of the brain
- Helps in the early detection and accurate diagnosis of various conditions
Recovery
- No significant recovery time; patients can resume normal activities immediately.
- Follow any specific instructions provided by your healthcare provider regarding rest or further appointments.
Alternatives
- CT (Computed Tomography) Scan: Uses X-rays, faster but involves radiation exposure.
- PET (Positron Emission Tomography) Scan: More specialized, often used in conjunction with other scans.
- EEG (Electroencephalogram): Used to monitor electrical activity but does not provide detailed images.
Patient Experience
Patients may hear loud thumping or buzzing noises from the machine but should feel no pain. Some patients may feel anxious or claustrophobic inside the scanner. Technicians often provide comfort measures such as blankets, music, and the option to communicate during the scan.