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Titolo:
SCANNING SLIT MAMMOGRAPHY
Autore:
BARNES GT; WU X; WAGNER AJ;
Indirizzi:
UNIV ALABAMA,DEPT RADIOL,619 S 19TH ST BIRMINGHAM AL 35233
Titolo Testata:
Medical progress through technology
fascicolo: 1, volume: 19, anno: 1993,
pagine: 7 - 12
SICI:
0047-6552(1993)19:1<7:SSM>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Keywords:
MAMMOGRAPHY TECHNIQUE; SCATTER CONTROL; SCANNING SLIT RADIOGRAPHY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
G.T. Barnes et al., "SCANNING SLIT MAMMOGRAPHY", Medical progress through technology, 19(1), 1993, pp. 7-12

Abstract

The importance of scatter in mammography and the performance of conventional mammographic grids are reviewed. Without scatter control imagecontrast is significantly degraded. Conventional mammography grids improve the situation; however, their performance is limited. As a result for 5 to 8 cm thick breasts, a more ideal method of scatter control could result in a 25 to 45% improvement in contrast over that possiblewith conventional grids. One such approach is scanning slit mammography. The principles of this approach are presented along with the design and geometrical specifications of a prototype multiple scanning slitunit. The unit has a measured primary transmission of 91% and scattertransmission of 3%. Similarly measured performance values for a commonly used grid are 62% and 19 %,respectively. Compared are images of a 6 cm breast phantom obtained with the scanning slit unit and a conventional grid. The scanning slit unit achieved noticeably greater image contrast with 30% less radiation. Also discussed are the limitations and engineering challenges of the technology.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/07/20 alle ore 07:44:38