Midwest Cardiovascular Research Foundation is the first in the nation to enroll its first patient into the Calcium 360 study...........On November 19, 2009 CSI announced the first patient enrollment in its prospective, randomized CALCIUM 360⁰ clinical trial, part of the company's 360⁰ Clinical Series.  The CALCIUM 360⁰ study will evaluate the treatment of peripheral arterial disease (PAD) behind and below the knee using CSI's Diamondback 360⁰ PAD System, a minimally invasive catheter for treating PAD anywhere in the leg.  The first procedure was performed successfully by Dr. Nicolas Shammas at Trinity Medical Center, Bettendrof, Iowa.  Dr. Shammas is the research director of the Midwest Cardiovascular Research Foundation in Iowa.  He and Dr. Russell Lam, Presbyterian Hospital, Dallas, are the study's co-principal investigators.