position on a dedicated stereotactic table mammotest fisher imaging denver colo using an 11 gauge vacuum assisted mammotome device biopsy medical irvine calif patients were then seen post biopsy in the women 39 s oncology clinic several days after the scnbb at that time a 7 5 mhz linear array transducer was used to assess the biopsy site in patients who would subsequently require surgical excision the location and size of the hematoma were documented in the patient 39 s record fig7 in a few of the early cases the ultrasound guided excision was scheduled with nlbb for back up at the time of surgical excision a sterilely covered 7 5 mhz linear array transducer acoustic imaging dornier medical systems inc kenneshaw ga was used to determine the precise hematoma location within the breast in those patients who also had nlbb the lesion was localized on the morning of surgery in the radiology suite using a homer mammalok u00ae plus needle medical device technologies inc gainesville fla when a needle was in place the ultrasound probe was used to mark the skin incision overlying the lesion or needle tip the resulting hematoma after scnbb was localized in the standard longitudinal and transverse planes after the incision was made the transducer was placed inside the incision and the hematoma was again visualized dissection was carried straight down toward the chest wall using a u201c line of site u201d technique krag d et al the sentinel node in breast.