Osteoporosis: Roentgenological Evaluation of Bone Mineral Loss in Spinal Trabecular Bone

Abstract

  Noticeable bone mineral density (BMD) change would be detected as losses of 30-50 % from standard radiographs. Spinal BMD measurements by computed tomography (Quantitative CT) may be made using a mineral calibration phantom precisely and accurately. In man the normal mean value of BMD is shown linear regression and is reduced over 40%. In females the normal mean value of BMD is shown cubic regression, accelerated at menopause, and is reduced over 50%. Calcium intake is necessary 600mg to 1,000mg per day, but in Japan calciumu intake is under 600mg per day. Moderate exerceise and intake of calcium are essential to preventing fractures by osteoporosis.