Publications by authors named "Aniko Sztrokay"
Article Synopsis
- Attenuation-based tomosynthesis is effective in resolving glandular tissue overlap in mammograms, but struggles to distinguish between tumorous and non-tumorous breast tissue due to similar X-ray attenuation.
- The study introduces a new approach using grating-based phase-contrast methods, which can provide additional insights into the tissue's phase shift and scattering properties.
- Initial results demonstrate that phase-contrast tomosynthesis enhances soft-tissue discrimination and depth resolution, allowing for clearer visualization of features like necrotic tissue that may be obscured in standard images.
Visual art because of its artistic context can be related to the general idea of providing alternative perceptual experiences. However, research examining the neural basis of art beyond the paradigm of beauty has been neglected. This study seeks to determine how the perception of a body in an artwork can be distinguished from the perception of a body in a non-artistic photography.
View Article and Find Full Text PDFHigh-resolution, low-dose phase contrast X-ray tomography for 3D diagnosis of human breast cancers.
Proc Natl Acad Sci U S A
November 2012
Mammography is the primary imaging tool for screening and diagnosis of human breast cancers, but ~10-20% of palpable tumors are not detectable on mammograms and only about 40% of biopsied lesions are malignant. Here we report a high-resolution, low-dose phase contrast X-ray tomographic method for 3D diagnosis of human breast cancers. By combining phase contrast X-ray imaging with an image reconstruction method known as equally sloped tomography, we imaged a human breast in three dimensions and identified a malignant cancer with a pixel size of 92 μm and a radiation dose less than that of dual-view mammography.
View Article and Find Full Text PDFObjective: Limited contrast between healthy and tumour tissue is a limiting factor in mammography and CT of the breast. Phase-contrast computed tomography (PC-CT) provides improved soft-tissue contrast compared with absorption-based techniques. In this study, we assessed the technical feasibility of grating-based PC-CT imaging of the breast for characterisation of ductal carcinoma in situ (DCIS).
View Article and Find Full Text PDFArticle Synopsis
- Researchers developed a numerical tool to directly compare the contrast-to-noise ratio (CNR) of two signals—attenuation and differential phase-contrast—in grating-based X-ray imaging.
- They applied a Gaussian derivative filter to the attenuation projection to make it comparable with the differential phase projection and introduced a Relative Contrast Gain (RCG) metric for analysis.
- The method was tested on human breast tissue data, showing potential for estimating the spatial distribution of the complex refractive index in tissues.