It's not that Caterpillar was doing poorly before the downturn. It was and still is the world's dominant maker of construction and mining equipment, as well as a leading producer of diesel and gas engines, industrial turbines (essentially jet engines that power equipment and generate electricity), and locomotives.
Definition. A HIDA scan is an imaging test. It helps to diagnose problems of the gallbladder and liver. Bile is a fluid that is made in the liver. It is stored in the bile duct.This fluid helps your body digest certain foods.If there is a problem with the production or flow of bile, a HIDA scan may find the problem.t helps to diagnose problems of the gallbladder and liver. Bile is a fluid that is made in the liver. It is stored in the bile duct. This fluid helps your body digest certain foods. If there is a problem with the production or flow of bile, a HIDA scan may find the problem.
Bone density scanning, also called dual-energy x-ray absorptiometry (DEXA) or bone densitometry, is an enhanced form of x-ray technology that is used to measure bone loss. DEXA is today's established standard for measuring bone mineral density (BMD). An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging. DEXA is most often performed on the lower spine and hips.