xDSL - Computer Definition. Referring to any of a group of broadband digital access technologies operating over embedded unshielded twisted pair (UTP) telco local loops. xDSL technologies employ sophisticated compression algorithms and multiplexing techniques to derive performance that often exceeds 1 Mbps over a voice grade local loop. Most DSL technologies support simultaneous voice and high speed Internet access, and a number support video, as well.
Osseous structures means bony structures and in thorax it includes ribs,vertebra, clavicle. It is normal in your case. There is no abnormality in bones. There is some problem in perfusion study and in your case it is due to ischemic(decreased blood supply to part of heart)insult.
os'teÂ·oÂ·clas'tic adj. osteoclast. A specialized bone cell that absorbs bone, allowing for the deposition of new bone and maintenance of bone strength. Osteoclasts secrete enyzmes that dissolve the matrix of old bone tissue and acids that dissolve bone salts, which contain calcium and phosphorus. Except in growing bone, the rate of bone deposition and bone absorption equal each other so that bone mass remains constant. A mass of osteoclasts absorbs bone from the outer surfaces inward for about three weeks.