I could enjoy a dinner with Prof. Ichiro Yabe, Dr. Masaki Ito, and Dr. Haruto Uchino from Departments of Neurology and Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo tonight. Two years has passed since Dr. Ito started to work at Stanford University under the direction of Prof. Gary Steinberg. Time is quick! In this meeting, I will present our on-going clinical trial, called as “MUSIC” Study (Mild, but Unstable Stenosis of Internal Carotid Artery Study). This study has been conducted by Prof. Masaaki Uno from Kurashiki, Prof. Kuniaki Ogasawara from Morioka and me. We are keen to establish the imaging markers to extract the patients who repeats ischemic stroke and/or TIA due to mild (<50%) carotid artery stenosis in spite of intensive medical treatments.