Digital subtraction angiography is a refinement of this method. It uses a computer to more clearly show vessels by subtracting background structures from the images. Advances in basic research provide the foundation for clinical research.
Bone marrow is tissue within the cavities of bones that contains fat cells and blood-forming cells.
Healthy bone marrow tissue constantly replenishes the blood supply and is essential to life. BMT can be used to provide blood-producing cells to children born without certain types of these cells or to adults with diseases that have caused bone marrow cells to die or to stop growing. Availability of BMT allows oncologists to give patients high doses of some drugs that offer a better chance for remission or cure but would otherwise cause lethal bone marrow damage. It uses radioactive materials placed very close to tumors to kill cancer cells while minimizing damage to normal tissues. Internal radiation therapy is another name for brachytherapy.