Evaluate the Safety and Efficacy of OAS in Treating Severely Calcified Coronary Lesions

Columbia University Medical Center, New York

Lenox Hill, New York

St. Francis, Roslyn

The Heart and Vascular Center, Beaver

Bryn Mawr / Lankenau, Bryn Mawr

St. Mary's, Langhorne

Penn Presbyterian Medical Center, Philadelphia

Emory University, Atlanta

Florida Hospital Memorial, Daytona Beach

North Florida Regional, Gainesville

Florida Hospital, Orlando

Orlando Regional, Orlando

Palm Beach Gardens, Palm Beach Gardens

Winter Haven, Winter Haven

Munroe Regional Medical Center, Ocala

Trinity Hospital, Birmingham

Baptist Montgomery South, Montgomery

Baptist Memorial Hospital-DeSoto, Memphis

North Mississippi Medical Center, Tupelo

King's Daughters / Kentucky Heart Foundation, Ashland

Good Samaritan Dayton, Dayton

Indiana Heart Hospital, Indianapolis

Saint Vincents Indianapolis, Indianapolis

Community Hospital, Munster

St. John's Hospital, Detroit

St. Joseph Mercy, Pontiac

Lakeland, Saint Joseph

Iowa Heart, Des Moines

United Heart & Vascular, Saint Paul

Abbott Northwestern, Minneapolis

Mercy Hospital, Coon Rapids

Kansas University Medical Center, Kansas City

Ochsner Clinic Foundation, New Orleans

New York Methodist Hospital, Brooklyn

Oklahoma Heart, Oklahoma City

Baylor, Dallas

Memorial Hermann, Houston

St. Luke's, Houston

Davis Hospital, Layton

Mercy Gilbert, Gilbert

Good Samaritan Hospital, Los Angeles

Cedar Sinai Los Angeles, Beverly Hills

Eisenhower Medical Center, Palm Springs

Desert Cardiology Center, Rancho Mirage

Sutter Memorial Hospital, Sacramento

Saint Joe Bellingham / North Cascade Cardiology, Bellingham

Maine Medical Center, Portland

Cape Cod Research Institute, Hyannis

Detroit Medical Center, Detroit

Saint Michaels, Newark

Valley Hospital, Ridgewood