In 7 lesions of lung and mediastinum smaller than 1.5 cm, 3 were not detected either by AC or by NAC, 3 of 11 lesions in the axilla, and 6 lesions in the abdomen and pelvis were not detected either.

• 7个小于1.；5cm的肺、肺门和纵隔病灶有3个两者均未检出；11个小于1