Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

[Q]: For medical purposes , X-ray filters are used to selectively attenuate , or block out , low - energy rays during x-ray imaging ( radiography ) . Low energy x-rays ( less than 30 keV ) contribute little to the resultant image as they are heavily absorbed by the patient 's soft tissues ( particularly the skin ) . Additionally , this absorption adds to the risk of stochastic ( e.g. cancer ) or non stochastic radiation effects ( e.g. tissue reactions ) in the patient . Thus , it is favorable to remove these low energy X-rays from the incident light beam . X-ray filtration may be inherent due to the X-ray tube and housing material itself or added from additional sheets of filter material . The minimum filtration used is usually 2.5 mm aluminium ( Al ) equivalent , although there is an increasing trend to use greater filtration . Manufacturers of modern fluoroscopy equipment utilize a system of adding a variable thickness of copper ( Cu ) filtration according to patient thickness . This typically ranges from 0.1 to 0.9 mm Cu .
[A]: X-ray filter


[Q]: The 1980 Summer Olympics boycott was one part of a number of actions initiated by the United States to protest the Soviet invasion of Afghanistan . The Soviet Union , which hosted the 1980 Summer Olympics , and other countries would later boycott the 1984 Summer Olympics in Los Angeles .
[A]: 1980 Summer Olympics boycott


[Q]: Jerome Avenue was put together as a plank road in 1874 for $375,000 . It appeared on maps as Central Avenue , because it started from Macombs Dam Bridge to Jerome Park Racetrack . Borough President Louis F. Haffen selected contractors in 1897 to pave Jerome Avenue . Three sections of the road were to be remodeled , costing the Bronx about $136,505 . The street was to be renamed after an unknown city alderman . Kate Hall Jerome , wife of Lawrence Jerome , was furious , replacing all the signs with the name Jerome Avenue in honor of Jerome Park Racetrack opened by her husband 's financier brother , Leonard Jerome in 1866 . When the subway line was commissioned , Jerome went from rural road to commercial artery .
[A]:
Jerome Avenue