An echocardiogram uses sound waves to produce images of your heart. This commonly used test allows your doctor to see your heart beating and pumping blood. Your doctor can use the images from an echocardiogram to identify heart disease.Depending on what information your doctor needs, you may have one of several types of echocardiograms.his commonly used test allows your doctor to see your heart beating and pumping blood. Your doctor can use the images from an echocardiogram to identify heart disease. Depending on what information your doctor needs, you may have one of several types of echocardiograms.
The octet rule is a chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.he octet rule is a chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
Featured article Â». Octreotide injection is used to treat severe diarrhea and other symptoms that occur with certain intestinal tumors or metastatic carcinoid tumors (tumors that has already spread in the body). It does not cure the tumor but it helps the patient feel more comfortable.eatured article Â». Octreotide injection is used to treat severe diarrhea and other symptoms that occur with certain intestinal tumors or metastatic carcinoid tumors (tumors that has already spread in the body). It does not cure the tumor but it helps the patient feel more comfortable.