PRIMATE SCIENCE RESEARCH HIGHLIGHT June 18, 1999 "Improved osteoporosis diagnosis?" (Courtesy Wisconsin Regional Primate Research Center) Osteoporosis is diagnosed by detection of low bone mass using a low-dose X-ray technique. However, in people with spinal arthritis, this methodology often yields falsely elevated readings. Researchers at the University of Wisconsin-Madison may have developed a technique to avoid these false readings by improved analysis of standard measurements. Neil Binkley, M.D., and colleagues at the UW-Madison Institute on Aging recently used this technique, called central region of interest (CROI) analysis, on adult female rhesus monkeys from the Wisconsin Regional Primate Research Center. The new technique identified 25 percent more old monkeys as having low bone mass. These animals would have been incorrectly classified as normal using the standard technique. These researchers are now evaluating this technique in humans to determine whether it can improve osteoporosis diagnosis and treatment. ### Reference: Krueger D., H. Todd, A. Haffa, J. Bruner, D. Yandow, and N. Binkley. 1999. Central region-of-interest analysis of lumbar spine densitometry demonstrates lower bone mass in older rhesus monkeys. Bone. Jan;24(1):29-33. **************************** Primate-Science Research Highlights appears every other week and focuses broadly on research involving non-human primates. Coverage includes biomedicine, behavior, conservation and veterinary science. Please submit highlights for this column to Larry Jacobsen, Primate-Science Research Highlights editor, at jacobsen@primate.wisc.edu. A 300-word limit and lay-language style are recommended. Primate-Science Research Highlights are supported by a grant from the National Institutes of Health, National Center for Research Resources. Copyright 1999, Wisconsin Regional Primate Research Center. No portion of this highlight may be copied or redistributed without the consent of the editor.