Noninvasive imaging systems, such as PET, SPECT, MRI, and CT, have become an essential part of modern medicine. Though MRI provides good contrast between the different soft tissues, contrast agents may be used to enhance the appearance of blood vessels, tumors, inflammation, or joints. When a contrast agent is specified, it is important to use one...

Non-invasive imaging systems, such as MRI and CT, have become an essential part of modern medicine for obtaining the information necessary to diagnose various diseases. MRI contrast agents have been tested in imaging cancers of the liver, the spleen, and the gastrointestinal tract as well as in imaging cardiovascular diseases. Researchers at the...

Hydrogel matrices have been developed to promote tissue regeneration after injury or to deliver drugs to a specific location. The interaction of the hydrogel with the surrounding tissue is complex and unique to each individual’s biochemistry, thus making it important to monitor the molecular structure and degradation rate of the gels once implanted....