Narrator:This is Science Today. Endoscopic ultrasound is a new technology, which combines video endoscopy with ultrasound. At the University of California, Irvine, Dr. Kenneth Chang, a gastrointestinal oncologist, is using this technique to provide a less invasive and more accurate approach to diagnosing certain kinds of cancer.
Chang: From inside, we can image structures and organs, such as the pancreas, gall bladder and liver, and we can also look at the extent of tumors through the wall of the stomach, esophagus, and make a definite diagnosis.
Narrator: Chang says this is especially helpful to the patient, since it eases the anxiety of wondering whether or not cancer is present.
Chang: In patients who we find cancer, endoscopic ultrasound is very useful for looking at the stage or the extent that the tumor has progressed, and we're also able to help the patient pick the best therapy, based on the extent of their disease.
Narrator: Currently, there are about 150 hospitals nationwide using endoscopic ultrasounds. For Science Today, I'm Larissa Branin.