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.
In addition to the two types of osseous tissue which make up our bones, there are two tissue layers that line our bones. The periosteum lines the outside surface of bones, and the endosteum lines the inner surface of bones.The periosteum is the surface to which muscles and tendons attach.o now that we know how to classify bones by shape, let's discuss the different types of osseous, or bone, tissue. There are two types of osseous tissue which form the bones of our skeleton. These are compact, or cortical bone, and spongy, or cancellous bone.