MRI CONTRAST

Contrast used for magnetic resonance imaging (MRI) scans is a specialty dye designed to increase the dials of an MRI exam. This is a clear, liquid material that is administered using a needle into a vein located in the arm or hand. Intravenous contrast agents change the magnetic properties of some tissues in the body to enable the visualization of certain internal parts. On this page we will cover the fundamentals of MRI contrast, its applications and dangers, and what a patient should expect in the procedure.  

What is MRI Contrast? 

MRI contrast is a type of gadolinium-based MRI contrast agent (GBCA) which is used for imaging enhancement. Gadolinium-based MRI contrast enhancements works with accumulation in particular tissues, structures, or regions of interest such as tumours, inflammation, and blood vessels, which enables them to be seen on MRI scans with greater contrast. This enhances the doctor's ability to treat and manage multiple medical conditions. 

Types of MRI Contrast 

The following are examples of MRI contrast agents: 

• Gadolinium Based Contrast agents (GBCA). 
• Iron based contrast agents. 
• Manganese based contrast agents. 

The following parameters will be considered by the medical professionals during the MRI contrast procedure: 

• Patient medical history and health now 
• Type and dosage of contrast agent used. 
• Time of contrast injection. 
• Patient’s kidney and liver function. 

MRI may be prescribed for some symptoms or conditions: 

• Abnormalities in brain, spine and other internal structures. 
• Malignancy or potential neoplastic changes. 
• Inflammation or infection. 
• Problems with blood circulation, including thrombus. 
• Unusual bleeding or clotting disorders. 

When and Who Needs to Take an MRI Contrast? 

An MRI contrast is done with patients with specific internal structures imaging, including but not limited to: 

• Tumours, cysts or any form of lesions in the brain, spine, or any other organ. 
• Inflammatory processes like multiple sclerosis, arthritis etc.  
• Vascular conditions like aneurysms, or blood clots. 
• Certain infectious processes or abscesses. 
• Patients with prior history of malignancy or currently undergoing treatment for malignancy. 

Benefits of Taking the Test

Advantage of MRI with contrast include: 

• Increased precision of MRI scan. 
• Visualization of certain internal structures. 
• More accurate diagnosis and better control of some diseases. 
• Quicker, less invasive, low risk surgical procedure. 

Illnesses diagnosed by MRI with contrast

MRI is commonly used to diagnose and monitor a host of illnesses including: 

• Neoplasia (e.g., brain, breast, liver or prostate cancers). 
• Multiple sclerosis. 
• Arthritis (e.g, rheumatoid arthritis and osteoarthritis). 
• Vascular or Aneurysms. 
• Abscess or other infections. 

Patients who undergo MRI contrast should: 

• Tell the doctor about allergies and other conditions 
• Remove any metal and clothing that will interfere with the MRI 
• Refrain from eating or drinking for a few hours prior to the procedure.  
• Ensure you arrive on time in order to complete all of the paperwork or preparations needed. 

Pre-requisites  

At least for an MRI contrast, there are no specific prerequisites. However, a patient might have to:  

• Undergo fasting for a few hours leading to the procedure.  
• Avoid certain medications or supplements.  
• Report any kidney or liver disease to the doctor. 

Best Time to Take the MRI Contrast  

The optimal timing for scheduling an MRI contrast highly relies on each patient’s individual requirements as well as unique medical circumstances. Generally speaking, there is no specific time when it should be done. However, scheduling this appointment for early to mid-afternoon is advisable to minimize potential hold-ups.  

Eligibility  

Most patients are eligible for MRI contrast, but there are exceptions such as:  

• Women who are pregnant or breastfeeding.  
• Patients who have certain medical implants, metal fragments, or undergoes surgery.  
• Patients suffering from kidney or liver disease. 

Procedure for Taking an MRI Contrast  

Typical procedures for MRI contrast usually follow the guidelines below.  

1. Preparation: The patient is going to be asked to take off any metal items and get into a gown.  
2. Injection: An injection will be administered into a vein located in the patient’s arm or hand. 
3. MRI scan: The patient will be placed in the MRI machine which will then be performed on them. 
4. Monitoring: The patient's parameters, including vital signs, as well as his medical condition will be monitored during and after the procedure. 

Caution Before Taking the Test  

Patients must notify their health care provider if they have any of the following:  

• Allergic or hypersensitivity reactions to the contrast media. 
• Health problems like renal or hepatic disorders.  
• Drugs or nutraceuticals which may interfere with the contrast media.