Faster, more precise MRI for the medical world

Sep 25, 2004

Magnetic Resonance Imaging (MRI) revolutionised the medical world two decades ago, providing doctors with an unparalleled view inside the human body. Now, MRI-MARCB has taken MRI to a new level with a system that enhances image quality, reduces scan time and improves diagnosis.

Currently in use in several hospitals around the world, the MRI-MARCB system overcomes one of the principal problems in producing MR images of the brain and heart: movement.

“Though MRI is an excellent non-intrusive imaging modality with excellent soft tissue contrast it is susceptible to motion because it can take several seconds or even minutes to acquire an image,” explains Kay Nehrke at Philips Medical Systems in Germany, coordinator of this IST-programme funded project. “During that time the patient’s heart is beating and they’re breathing – it’s like taking a photo of a moving object. If the photo takes one second the image will appear blurry. If you follow the object with the camera, however, you’ll get a clear image and that is what we’ve done in a sense.”

The project partners used two different but complimentary techniques to overcome the motion problem. In the case of heart scans a software system was developed to create a mathematical model of the pattern of movement caused by breathing and heart beat. That information is then used to compensate for the motion effects in the resulting MR image. For brain scans, where even the slightest movement of a patient’s head could cause images to be unusable, a camera system was employed alongside the software to track and compensate for motion.

“Without compensation images can be filled with artefacts, making it hard to tell whether you are looking at a clogged artery or just a poor image,” Nehrke says.

With the MRI-MARCB system image quality is greatly improved resulting in more precise diagnosis, while at the same time reducing the time it takes to perform an MRI scan.

“Trials at 10 hospitals with around 200 patients showed a 30 per cent reduction in scan time because of the compensation for movement,” Nehrke notes. “As we all know time is money so this offers important cost savings for hospitals, while patients feel more comfortable because they do not have to worry so much about not moving or even breathing.”

According to the project coordinator, the software can be easily integrated into existing MRI platforms, and the camera system is “relatively inexpensive given the advantages it provides.”

MRI-MARCB is currently being used at hospitals in Germany, Denmark, Japan and the United States, with the project partners planning further commercialisation activities and development in the future.

Explore further: Study shows role of media in sharing life events

add to favorites email to friend print save as pdf

Related Stories

'Shocking' underground water loss in US drought

26 minutes ago

A major drought across the western United States has sapped underground water resources, posing a greater threat to the water supply than previously understood, scientists said Thursday.

Study shows role of media in sharing life events

58 minutes ago

To share is human. And the means to share personal news—good and bad—have exploded over the last decade, particularly social media and texting. But until now, all research about what is known as "social sharing," or the ...

The microbes make the sake brewery

1 hour ago

A sake brewery has its own microbial terroir, meaning the microbial populations found on surfaces in the facility resemble those found in the product, creating the final flavor according to research published ahead of print ...

New approach to form non-equilibrium structures

1 hour ago

Although most natural and synthetic processes prefer to settle into equilibrium—a state of unchanging balance without potential or energy—it is within the realm of non-equilibrium conditions where new possibilities lie. ...

Recommended for you

Hoverbike drone project for air transport takes off

10 hours ago

What happens when you cross a helicopter with a motorbike? The crew at Malloy Aeronautics has been focused on a viable answer and has launched a crowdfunding campaign to support its Hoverbike project, "The ...

Study shows role of media in sharing life events

11 hours ago

To share is human. And the means to share personal news—good and bad—have exploded over the last decade, particularly social media and texting. But until now, all research about what is known as "social sharing," or the ...

User comments : 0