Radiology

MRI Elastography and the Fight Against Obesity

Over the past five years, a new model called quantitative imaging has begun to emerge within radiology. This type of imaging allows radiologists to take a measurement that can then be used to track a disease and its subsequent treatment.

MR elastography is a type of quantitative imaging. In this technique, a paddle is placed on your child’s abdomen and sends sound vibrations to the liver. The MRI machine then takes pictures of these sound waves and a computer measures how big or small the waves are. The firmer the liver is, the larger the sound waves are. In addition to measuring the stiffness of the liver, we also take pictures that allow us to quantify the percentage of the liver that is replaced by fat.

While MR elastography can be performed for a number of reasons, the most common reason at Cincinnati Children’s is in cases of obesity. If a child is obese, the liver can become replaced by fat. In a small percentage of these patients, inflammation can occur, causing fibrosis and possibly cirrhosis. MR elastography can help to distinguish these different states as fibrotic and cirrhotic livers are firmer than a normal liver. Because this technique is accurate, it can help certain patients avoid a liver biopsy. In addition, because this test is very reproducible and does not use radiation, it can be used to monitor patients to see if medications or a change in diet is having an effect on the liver.

If your child is having this test, he or she should expect to feel the gentle sound vibrations while the test is being performed. While the sound waves are painless, we always try to warn your child before they start so that he or she won’t be startled and move while we are taking pictures. This exam usually takes about 30 minutes from start to finish, but may be faster or slower depending on your child.

 

Story contributed by Alex Towbin, MD, and edited by Tony Dandino

 

 

 

Tony Dandino

About the Author: Tony Dandino

Tony is an MRI Technologist at Cincinnati Children’s. Tony has been in his role for several years and serves as a Charge Tech, Quality Improvement Coach and Safety Coach for the MRI department. Tony has always known he wanted to work with children and in the medical field. Working at Cincinnati Children's has been the best of both worlds. Every day is something new and Tony can never wait to start the next adventure.

Write a comment

Comments

No Comments Yet! You can be first to comment on this post!