Head and Neck Radiology The radiology subspecialty devoted to the diagnostic imaging and diagnosis of diseases of the head and neck. This includes x-rays, CT (computed tomography or CAT), Ultrasound and MRI. Musculoskeletal Radiology The radiology subspecialty devoted to the diagnostic imaging and diagnosis of the muscles and the skeleton.
What Is Kitty Litter Made Of? Before 1950, kitty litter mostly consisted of sand, dirt or ashes. The first modern kitty litter was created when a neighbor of entrepreneur Edward Lowe asked him for sand for her litter box. Mr. Lowe, whose business created absorbents, convinced his friend to use clay rather than sand.
House Rabbit Society recommends organic litters, made from alfalfa, oat, citrus or paper. (Some brands to look for: Care Fresh, Cat Country, Critter Country, Yesterdayâs News, and Papurr) For a complete listing of litter types, see the litter boxes and liver disease article.