We are evaluating the application of stereoscopic imaging to digital mammography. In the current study, we investigated the effects of magnification and zooming on depth perception. A modular phantom was designed which contained six layers of 1-mm-thick Lexan plates, each spaced 1 mm apart. Eight to nine small, thin nylon fibrils were pasted on each plate in horizontal or vertical orientations ...

Early breast cancer in women can be detected efficiently, by processing Mammograms in an effective way. Mammographic images are affected by noise which has low contrast and poor radiographic resolution based on illperformance of X-ray hardware systems. This leads to improper visualization of lesion detail. Generally Non-linear filters are preferred for image enhancement applications. Because th...

A multilayer-based fiber optic sensor enabling simultaneous measurement of humidity and temperature is proposed and demonstrated. The sensitive elements were multilayer coatings consisting of nano-porous TiO(2) and SiO(2) films, which were deposited on fiber end-face to form a Fabry-Perot (F-P) filter structure. Relative-humidity (RH) sensing is correlated with the shift of interference fringe ...

The purpose of this study is to investigate the impacts of added filtration on the contrast-detail detectability of a digital X-ray imaging system for small animal studies. A digital X-ray imaging system specifically designed for small animal studies was used. This system is equipped with a micro X-ray source with a tungsten target and a beryllium window filtration and a CCD-based digital detec...

We discuss implications of recent precision measurements for the Rh proton separation energy for the production of the lightest molybdenum isotopes in proton-rich type II supernova ejecta. It has recently been shown that a novel neutrino-induced process makes these ejecta a promising site for the production of the light molybdenum isotopes and other “p-nuclei” with atomic mass near 100. The ori...

OBJECTIVE To estimate the coverage of opportunistic mammography screening performed via the Brazilian Sistema Único de Saúde (SUS, Unified Health Care System), at the state and regional level, in 2013. MATERIALS AND METHODS This was an ecological study in which coverage was estimated by determining the ratio between the number of mammograms performed and the expected number of mammograms amon...

Abstract. Volatility and viscosity have substantial impacts on gas–particle partitioning, formation evolution of aerosol hence the predictions aerosol-related air quality climate effects. Here volatility at a rural site (Gucheng) an urban (Beijing) in North China Plain (NCP) summer winter were investigated by using thermodenuder coupled with high-resolution mass spectrometer. The effective satu...

A selective separation and recycling system for metal ions was developed by homogeneous liquid-liquid extraction (HoLLE) using a fluorosurfactant. Sixty-two different elemental ions (e.g., Ag, Al, As, Au, B, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cu, Dy, Er, Eu, Fe, Ga, Gd, Ge, Hf, Hg, Ho, In, Ir, La, Lu, Mg, Mn, Mo, Nb, Nd, Ni, Os, P, Pb, Pd, Pr, Pt, Re, Rh, Ru, Sb, Sc, Se, Si, Sm, Sn, Sr, Ta, Tb, Te...

BACKGROUND Risk factors for local recurrence after breast-conserving treatment of early breast cancer have not previously been evaluated in settings where mammography has been a major pathway to diagnosis of both primary tumour and recurrences or in patients treated surgically by a formal sector resection. PATIENTS AND METHODS Three hundred eighty-one women with stage 1 primary breast cancer ...