Design and evaluation of a slot-scanning Full-Field Digital Mammography system

被引：23

作者：

Besson, GM ^{[1
]}

Koch, A ^{[1
]}

Tesic, M ^{[1
]}

Sottoriva, R ^{[1
]}

Prieur-Drevron, P ^{[1
]}

Munier, B ^{[1
]}

Calais, E ^{[1
]}

DeGroot, P ^{[1
]}

机构：

[1] Fischer Imaging Corp, Denver, CO 80241 USA

来源：

MEDICAL IMAGING 2002: PHYSICS OF MEDICAL IMAGING | 2002年 / 4682卷

关键词：

digital x-ray systems; low dose imaging; high resolution; DQE; MTF; FFDM; slot-scanning;

D O I：

10.1117/12.465589

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The FDA has approved the SenoScan slot-scanning Full-Field Digital Mammography (FFDM) system. A high power Tungsten-target x-ray tube enables breast imaging with 0.22 s effective exposure time. A 21-cm x 29-cm area is scanned in less than 6 seconds, at a typical clinical technique of 30 kVp, 170 mA. The detector comprises a Thalium-doped Cesium Iodide scintillator coupled to a combination of four CCDs abutted along their narrow dimension to form a 10-mm by 210-mm slot. With the CCDs operated in time-delay-and-integration mode along the narrow dimension, the system functions in a continuous scanning (and x-ray illumination) mode. The MTF in the standard and high-resolution modes extend to 10-cycles/mm and beyond 14 cycles/mm respectively. The Detective Quantum Efficiency (DQE) curve starts at 50% at DC and extends to 10 cycles/mm in Standard mode. Accordingly the SenoScan system enables screening and diagnostic breast imaging with a limiting resolution approaching that of film-based systems. The overall system design and intrinsic scatter rejection efficiency directly translate in high DQE characteristics that enable screening at a significantly reduced (more than 60% reduction) patient dose.

引用

页码：457 / 468

页数：4

共 10 条

[1]

Barrett HH., 1981, RADIOLOGICAL IMAGING

[2]

Boone J., 2000, HDB MED IMAGING, V1

[3]

Dainty JC., 1974, IMAGE SCI

[4] MONTE-CARLO CALCULATION OF CONVERSION FACTORS FOR THE ESTIMATION OF MEAN GLANDULAR BREAST DOSE [J].