Using a contrast agent to make organs and tissues more visible on the scan also bumps the price. Typically, an MRI is more costly than a CT scan, but prices vary widely from different providers ...

For many situations, MRI is the preferred diagnostic tool -- especially for brain imaging, although CT scan is still chosen for strokes because it is better at detecting hemorrhage. The drawback ...

That's changing with the advent of new imaging technology: CT scans ... defibrillator. The contrast medium is not iodine-based, so there are no allergy problems. The MRI scan requires that ...

The enhanced contrast means that in some cases ultrasound could be used instead of MRI and CT scans, which are more expensive and harmful to the body. The study was published in Biomaterials Advances.