Bangkok--20 Nov--Siemens Dr. Wiwan Nitiwarangkul, President of Ratchavipa MRI Center has recently signed an order contract of Magnetic Resonance Imaging System (MRI) with Mr. Albert Ritzer, Senior Vice President, Medical Solutions of Siemens Ltd., Thailand. The MRI is a whole body scanning system that uses magnetic field instead of x-ray, thus providing more safety to the patients and better soft tissue resolution than x-ray system.