نتایج جستجو برای: digital mammography system

تعداد نتایج: 2467078  

Journal: :Physics in medicine and biology 2008
Michiel Kallenberg Nico Karssemeijer

It would be of great value when available databases of screen-film mammography (SFM) images can be used to train full-field digital mammography (FFDM) computer-aided detection (CAD) systems, as compilation of new databases is costly. In this paper, we investigate this possibility. Firstly, we develop a method that converts an FFDM image into an SFM-like representation. In this conversion method...

Journal: :Nihon Hoshasen Gijutsu Gakkai zasshi 2009
Chieko Nagashima Nachiko Uchiyama Noriyuki Moriyama Mio Nagata Hiroyuki Kobayashi Katsuhiro Sankoda Shigeru Saotome Masahiro Tagi Tetsurou Kusunoki

Currently daily quality control (QC) tests for mammography systems are generally evaluated by using visual analysis phantoms, which of course means subjective measurement. In our study, however, we evaluated a novel digital phantom, the 1Shot Phantom M plus (1Shot Phantom), together with automatic analysis software dedicated for mammography systems using Fuji computed radiography (FCR). The dig...

2014
Mercè Comas Arantzazu Arrospide Javier Mar Maria Sala Ester Vilaprinyó Cristina Hernández Francesc Cots Juan Martínez Xavier Castells

OBJECTIVE To assess the budgetary impact of switching from screen-film mammography to full-field digital mammography in a population-based breast cancer screening program. METHODS A discrete-event simulation model was built to reproduce the breast cancer screening process (biennial mammographic screening of women aged 50 to 69 years) combined with the natural history of breast cancer. The sim...

Journal: :Frontiers in radiology 2023

Introduction To date, most mammography-related AI models have been trained using either film or digital mammogram datasets with little overlap. We investigated whether not combining and mammography during training will help hinder modern designed for use on mammograms. Methods this end, a total of six binary classifiers were comparison. The first three images only from Emory Breast Imaging Data...

Journal: :Medical physics 2003
Kirsi Nykänen Samuli Siltanen

Effects of x-ray scattering on full-field digital mammography are analyzed with the scattering model of Seibert and Boone [Med. Phys. 15, 567-575 (1988)]. A new method is introduced for the estimation of model parameters from measurements. It is shown that with breasts thinner than a certain threshold, removing the anti-scatter grid leads to an improved contrast-to-noise ratio with a smaller pa...

Journal: :Journal of the American College of Cardiology 2016

Journal: :Physics in medicine and biology 2003
O Treiber F Wanninger H Führ W Panzer D Regulla G Winkler

This paper uses the task of microcalcification detection as a benchmark problem to assess the potential for dose reduction in x-ray mammography. We present the results of a newly developed algorithm for detection of microcalcifications as a case study for a typical commercial film-screen system (Kodak Min-R 2000/2190). The first part of the paper deals with the simulation of dose reduction for ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید