Purpose: To determine the number of extra images (EI) that are necessary for imaging large breasts when using a detector smaller than 24 cm×30 cm and to calculate the additional average glandular dose (AGD) for these images. Materials and Methods: The screening mammograms taken between 2007 and 2011 were assessed for a photon counting full-field digital mammography (PCM) system (detector size: ...

This article summarises the information to be offered to women about mammography. After a delineation of the aim of early diagnosis of breast cancer, the difference between screening mammography and diagnostic mammography is explained. The need to bring images and reports from the previous mammogram (and from other recent breast imaging examinations) is highlighted. Mammography technique and pr...

Mammography is currently the most effective breast cancer screening technique. It has been shown by clinical studies that mammography has reduced the mortality by 30~50%. However, mammography is not a perfect technique in that about 30% of breast cancers are missed. A major limit to the sensitivity of conventional mammography is the superimposition of the breast tissue. A mammogram is a two-dim...

─ 179 ─ Screen-film mammography has certain technical limitations which reduce its effectiveness: the film gradient must be balanced against the need for wide latitude, detection of microcalcifications and portrayal of the clarity of the margins of breast masses are reduced due to the presence of film noise in the displayed image, film processing artifacts can degrade the mammographic image, an...

Abstract. Breast imaging techniques have received renewed attention as a proved means for earlier detection and diagnosis of breast cancer. Due to the extremely high image quality requirements in mammography, all aspects of the imaging process must be optimised. With this purpose new imaging systems have been incorporated. The aim of this paper is to present results of patient dose comparison i...

Purpose To establish performance benchmarks for modern screening digital mammography and assess performance trends over time in U.S. community practice. Materials and Methods This HIPAA-compliant, institutional review board-approved study measured the performance of digital screening mammography interpreted by 359 radiologists across 95 facilities in six Breast Cancer Surveillance Consortium (B...

The use of mammography film-screen is limited in general radiography. The purpose of this study was to compare the effectiveness of mammographic film-screen and standard film-screen systems in the detection of small bone fractures. Radiographs were taken from patients' extremities and neck areas using mammography film-screen and standard film-screen (n=57 each). Fourteen other radiographs were ...

The X-ray detector is the heart of a digital mammography system. Its improved characteristics of dynamic range and signal-to-noise ratio provide inherent advantages over screen-fi lm technology. Detector technologies used for digital mammography can be distinguished by the acquisition geometry into scanning or full-fi eld detectors, by energy conversion mechanism into phosphor-based and nonphos...