单位:[1]BEIJING MED COLL, 3RD AFFILIATED HOSP, DEPT RADIOL, BEIJING, PEOPLES R CHINA[2]BEIJING FRIENDSHIP HOSP, DEPT RADIOL, BEIJING, PEOPLES R CHINA首都医科大学附属北京友谊医院[3]BEIJING MED COLL, DEPT PATHOL, BEIJING, PEOPLES R CHINA[4]BEIJING MED COLL, PEOPLES HOSP, DEPT RADIOL, BEIJING, PEOPLES R CHINA[*1]BEIJING MED COLL, 1ST AFFILIATED HOSP, DEPT RADIOL, BEIJING, PEOPLES R CHINA