Hearing that you need a magnetic resonance imaging (MRI) scan often brings up immediate questions, but when your doctor adds the phrase “with contrast,” your mind likely jumps straight to the details: What is being injected into my body? Is it safe? Will it hurt?
Magnetic resonance imaging relies on strong magnetic fields and radio waves to create detailed images of your organs, nerves, and soft tissues without using any ionizing radiation. While basic prep guides cover standard steps like removing metallic jewelry, contrast-enhanced scans involve an extra layer of preparation.
At South Jersey Radiology Associates, we believe that clear, straightforward information helps you make informed decisions about your medical imaging care. Keep reading to find out what you need to know about how MRI contrast works, when it is recommended, and what to expect during your appointment.
What is gadolinium and when is MRI contrast ordered?
To understand how contrast works, it helps to know what is being used. Gadolinium-based contrast agents are specialized intravenous solutions containing gadolinium, an element with unique magnetic properties. When injected into a vein before or during an MRI scan, this contrast dye temporarily alters the magnetic behavior of water molecules in your tissue, causing specific structures to stand out clearly on the final images.
Your healthcare provider might order an MRI scan with contrast when they need precise visualization of fluid movement, tissue blood supply, or subtle abnormal growths. Contrast dye is particularly valuable for:
- Evaluating blood vessels by highlighting arterial and venous pathways to detect blockages or vascular malformations.
- Characterizing tumors and masses by defining clear edges and blood supply to help distinguish between benign growths and cancerous tumors.
- Detecting active inflammation by tracking active demyelination in neurological conditions like multiple sclerosis or highlighting soft-tissue infections.
- Improving diagnostic accuracy across specialized scans
Evaluating specific conditions: With vs. without contrast
Patients frequently wonder whether a standard non-contrast scan is enough. Here is how non-contrast and contrast-enhanced MRIs evaluate common health concerns.
| Diagnostic Concern | Non-Contrast MRI Capabilities | Contrast-Enhanced MRI Capabilities |
|---|---|---|
| Tumors and masses | Detects mass size, location, and structural displacement | Reveals blood supply, defines clear borders, and helps differentiate benign from malignant tissue |
| Soft tissue inflammation | Visualizes swelling, fluid buildup, and joint edema | Pinpoints active autoimmune flares and subtle tissue infections |
| Nerve compression and pain | Identifies pinched nerves, spinal stenosis, and disc herniations | Highlights active demyelination in multiple sclerosis |
What are the potential downsides of MRI with contrast?
For most patients, undergoing a contrast MRI is safe, painless, and well-tolerated. However, as with any procedure involving an intravenous injection, there are a few potential side effects and health considerations to keep in mind.
- Mild, temporary symptoms. Some patients feel a brief cold sensation at the IV site, mild soreness, temporary nausea, or a headache.
- Allergic reactions. Although uncommon, a mild allergic reaction, such as skin hives or itching, can occur. Clinical staff and radiologists at SJRA are fully trained to treat mild allergic responses immediately.
- Kidney function considerations. Contrast agents are processed and eliminated through your renal system, making pre-scan evaluation of kidney function essential.
- Nephrogenic systemic fibrosis. In individuals with severe kidney disease or renal failure, older formulations of gadolinium were historically linked to nephrogenic systemic fibrosis, a rare condition causing tissue thickening. Today, pre-scan kidney screenings and modern gadolinium-based contrast agents at SJRA have made this risk extremely rare.
View our available MRI appointments at a location near you today
What should I avoid before a contrast MRI?
Proper preparation ensures both your safety and optimal image clarity.
Fasting requirements
SJRA staff may ask you to fast for a few hours prior to your appointment, depending on the specific body part being evaluated.
Medication review
Most routine medications can be taken as usual with small sips of water. However, if your scan evaluates inflammatory conditions, your doctor may suggest briefly holding anti-inflammatory drugs.
Metal removal
Because the MRI machine generates a powerful magnetic field, you must remove all metallic items, including watches, jewelry, body piercings, and hairpins.
Health disclosures
Always inform your technologist if you have a history of kidney disease, severe allergies, or implanted medical devices.
What to expect from other types of MRI at SJRA
South Jersey Radiology Associates provides a full range of advanced diagnostic imaging services tailored to your needs:
- Wide-Bore scanners that provide extra headroom and faster scan times
- Advanced neurological imaging, such as specialized volumetric brain analysis, which reviews cognitive conditions, traumatic brain injuries, and post-viral complications
- Specialized body imaging, including breast MRI, prostate MRI, and joint evaluations
Why choose SJRA for your MRI with or without contrast?
- Ten convenient outpatient locations across Burlington, Camden, and Gloucester counties
- Outpatient savings of up to 60% compared to hospital-based imaging centers
- Over 65,000 MRIs are read annually by board-certified, subspecialized radiologists
- In-network with 99% of health insurance plans
- Flexible scheduling with evening, weekend, and 24/7 online scheduling options
Frequently Asked Questions
A non-contrast MRI uses magnetic fields to capture clear structural images of your tissues. An MRI with contrast adds an IV injection of gadolinium dye to highlight blood flow, active inflammation, and tissue details.
If you have normal renal clearance, MRI contrast agents are rapidly filtered by your kidneys and excreted through urine. Most of the contrast is eliminated within 24 hours. Drinking plenty of water after your scan helps flush out the dye even faster.
Yes. In nearly all cases, you can drive yourself home and resume normal daily activities right after your appointment. The gadolinium injection does not cause drowsiness or impair your ability to drive.
If you experience claustrophobia and receive a mild oral sedative from your ordering physician to help you relax inside the scanner, you will need a driver to transport you home safely.
Yes. A non-contrast MRI detects many structural tumors, cysts, and abnormal masses because they change the surrounding anatomy. However, adding contrast dye provides critical information, helping radiologists determine whether a mass is benign or malignant.
Yes. Structural nerve issues—such as a herniated disc pressing on a nerve—are visible on a standard non-contrast MRI. Contrast dye is reserved for evaluating active demyelinating lesions from multiple sclerosis and other conditions.
Yes. For patients with healthy kidney function, gadolinium contrast is very safe and is cleared naturally from the body within a day.
Wear comfortable clothing without metal fasteners, leave jewelry at home, arrive early, follow any fasting guidelines, and notify your technologist of any health conditions.
The scan itself takes 15 to 60 minutes. Including check-in, IV setup, and post-scan steps, plan for your overall visit to last about one to two hours.
At South Jersey Radiology Associates, you can schedule your MRI with contrast with SJRA at any one of the following offices:
• Marlton (Greentree) Office – Marlton, NJ
• Medford Office – Medford, NJ
• Moorestown Office – Moorestown, NJ
• Mount Laurel Office – Mount Laurel, NJ
• Route 73 (Voorhees) Office – Voorhees Township, NJ
• Turnersville Office – Turnersville, NJ
• Voorhees (Carnie Blvd) Office – Voorhees Township, NJ
• Sewell (Washington Twp) Office – Sewell, NJ
• West Deptford Office – West Deptford, NJ
• Willingboro Office – Willingboro, NJ
