Dr. Nakatani called this method Ryodoraku: Ryo (good), do (electro-conductive), raku (meridian). After electronically measuring the meridians, the exam results were manually calculated using a staggered numbering system for graphing. His pioneering research and development of Ryodoraku would become international within 25 years of it's discovery.

Contemporary Acupuncture Diagnosis ™ and EMI ™ has revolutionized the way acupuncture is being practiced by both medical practitioners and traditionally trained acupuncturists worldwide. EMI ™ is reliable; duplicable; easy to learn and employ. The exam may be accomplished in less than three minutes and may be performed by either a doctor or a trained technician.

It allows the patient to take home a printed copy of their graphic interpretation, as well as diagnostic criteria. In addition, a copy of involved meridians may be printed, or a copy of specific points that the patient may use at home to accelerate clinical response and healing.