1.
Science
; 285(5427): 535-6, 1999 Jul 23.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10447485
2.
Science
; 272(5259): 221-2, 1996 Apr 12.
Artigo
em Inglês
| MEDLINE
| ID: mdl-8602504
3.
Radiology
; 178(2): 393-6, 1991 Feb.
Artigo
em Inglês
| MEDLINE
| ID: mdl-1987599
RESUMO
An automatic exposure controller has been designed that controls the optical film density for film, screen, and radiographic techniques typically used in mammography to within 0.05 over a range of 1.3-6.7-cm thickness of Lucite. This degree of accuracy is better than that reported for presently available controllers. The detector system consists of four cadmium telluride detectors and involves the use of a control algorithm to read the detectors and turn off the mammography unit at the correct time. This algorithm is implemented by a microprocessor, which also provides the means for a convenient calibration.
Assuntos
Mamografia/instrumentação , Tecnologia Radiológica , Feminino , Humanos , Mamografia/métodos
4.