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.
Pine litter is made from sawdust, a waste product from lumber mills. The leading pine litter is Feline Pine, which earns the title of best cat litter at ConsumerSearch â not just among natural litters, but overall.