The following table shows the various techniques I considered, ordered from most to least error-prone.5 Provided by Luiz Da Silva, PhD., scientific advisory board, UC Davis National Science Foundation Center for Biophotonics Science and Technology. After dozens of trials with multiple subjects, and taking into account both constancy and convenience (including cost), there were three clear winners:6 1. DEXA 2. BodPod 3. Ultrasound (BodyMetrix) The Top 3 DEXA Dual energy X-ray absorptiometry (DEXA), which costs $50100 per session, ended up my favorite, as it is repeatable and o ers valuable information besides bodyfat percentage. The GE Lunar Prodigy, the machine I used, is designed for bone density testing and splits the body into different zones: My DEXA scan image. If you're not concerned about osteoporosis, why is this interesting? Because it highlights muscular imbalances between the left and right sides. In my case:
mented with additional information on the or, for example, fruit ripening (Nelson et al. product. 1993, 1994, 1995, 2006, 2007). There also This chapter presents an overview of exist in-line applications for the meat the main electromagnetic physical methods sector—for example, the evaluation of meat for controlling meat products throughout tenderness by using x-ray absorptiometry the production process. Moreover, a brief (Kröger et al. 2006). Some of these applica- summary of the most important marketed tions will be described throughout this sensors is presented. chapter. 443 444 Chapter 25 Figure 25.1. The electromagnetic spectrum. Figure 25
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