In this chapter:

   (1)   “Board” means the radiography examining board.

   (2)   “Bone densitometry” means the quantitative assessment of bone mass using single or dual energy X-ray absorptiometry.

   (3)   “Department” means the department of safety and professional services.

   (4)   “Physician” means a person licensed to practice medicine and surgery under s. 448.04 (1) (a), (b), or (bg).

   (5)   “Practice of radiography” means the imaging of anatomical structures, produced by the combined application of X-rays to the human body and the application of knowledge in the fields of anatomy, radiographic positioning, and radiographic technique, and knowledge of principles of radiation protection, for the purpose of medical diagnosis except that “practice of radiography” does not include bone densitometry.