ii. True or False: Estimates of body composition obtained with dual-energy x-ray absorptiometry need to be interpreted with particular caution in individual whose disease states are associated with substantial fluid retention.

Answer: True

Explanation:

The dual energy x-ray absorptimetry is a technique that is used for measuring the bone mineral density. This technique utilizes the two X-ray beams with different levels of energy. The soft tissues are subtracted in this procedure and the beam is absorbed by the bone. This technique is useful for diagnosis of osteoporosis, to check and diagnose the infected, fractured and healing bones.

Fluid retention is a condition in which excess fluid due to capillary leakage or any other reason fills up inside the circulatory system, body tissues and cavities. The following symptoms will appear:

Discolored skin, aches and tenderness in the limbs, stiffness in joints and weight gain.

The retained excess fluid may react with the X-ray beam hence, will interfere in the process of diagnosis. Thus caution should be taken for such individuals.