A chest CT scan is a more detailed type of chest x ray that takes many detailed pictures of your lungs and the inside of your chest.
Greece fell when the Roman Empire envaded Greece and changed their religion. Wasnt a good Idea though. I'll Say! I mean even though it was reletively the same, same gods different names, and the same legends, just from a different point of view.
The Byzantine Empire fell in 1453. The immediate cause of its fall was pressure by the Ottoman Turks. The Ottomans had been fighting the Byzantines for over 100 years by this time. In 1454, Constantinople finally fell to them and their conquest of the Byzantine Empire was complete. Ironically enough, the major cause of the decline of the Byzantine Empire (what made it weak enough to fall to the Ottomans) was the Crusades. The Crusades were supposed to be Christian wars against Muslims.