TABLE 1.

Available Breast Services Among 45 Mammography Facilities

Services	No. of Facilities	% of Total Facilities
Imaging technique (n = 45)
Screening mammography	45	100
Diagnostic mammography	34	76
Breast sonography	30	67
Ductography	16	36
Breast MRI	7	16
Breast nuclear medicine scanning	7	16
Digital mammography	2	5
Computer-aided detection	5	11
Other	7	16
Interventional procedures (n = 45)
Cyst aspiration	24	53
Needle localization	23	51
Core biopsy	18	40
Fine-needle aspiration	12	27
Vacuum-assisted biopsy	11	24
Annual mammography volume (n = 42)a
Low	6	14
Medium	30	71
High	6	14

Note.—Low volume = < five examinations per mammography unit per day, Medium = 5–14 examinations, High = ≥15 examinations [4].

^aAnnual volume included total screening and diagnostic mammography examinations performed in 2001. Data were available for only 42 facilities.