What Is The Use Of Ostreoscan,what Does It Measure And What Part Of The Body It Scans?

I will be performed an Ostreoscan. I would like to know what parts of the body it scans, and what the Ostreoscan is useful for Please answer. Thank you. In year 2004 they discovered in my blood analysis 2 tumor factors: CEA and Alphaphitoprotein. Today, in year 2014 I still have both tumor factors. In year 2004 I went through surgery to remove a dermoyd cyst placed on my ovaries. Dermoyd cyst, ovaries and uterus have been removed. January 2008 surgery to remove an adrenal tumor on my left adrenal: Phaeochromocytoma. I also had hyperparathydoism, and have a severe level of osteoporosis. I have small cysts on my kidneys, but my endocrinologist is not concerned about it because they are tiny PLEASE TELL ME WHAT THE OSTREOSCAN MEASURES. THANK YOU!