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The screening of individuals at high risk of breast cancer has become an important issue in recent years. Since this population consists mostly of young women with dense breasts, new modalities such as magnetic resonance imaging (MRI) and ultrasonography (US) have been evaluated, and MRI screening has been implemented in some countries, because of its higher sensitivity and specificity than those...
In the randomized controlled trials carried out in the late 1970s and the 1980s, mammographic screening was demonstrated to have an impact in decreasing mortality from breast cancer. The evaluation of mammographic service screening programmes implemented in several Western European countries in the late 1980s and the 1990s demonstrated that these programmes may have an even higher effect on breast...
Breast cancer is a serious potential health problem for all women. The current screening and imaging techniques such as X-ray mammography, clinical examination, ultrasound, and MRI, even combined in some way, provide only 73% accuracy in detecting breast cancer. This motivates researchers with biomedical background to investigate new techniques to advance the screening techniques aiming for early...
To present a pseudo lossless compression which modifies the noise component of the bit data to enhance the compression without affecting image quality? The hypothesis behind the study is that the bit data contaminated by noise can be manipulated without affecting image quality. The compression method comprises of three steps: (1) to estimate the noise level for each pixel, (2) to identify those bits...
In the era computer and telecommunications, pathologist's still mount tissue slices on glass slides, treat them with appropriate stains and examine them through a microscope. Despite advances in staining techniques, it's a process that has changed little over the last twenty years. Interpreting what they see is a time-consuming process and requires a great deal of skill and experience. Imaging techniques...
Breast cancer is the second leading cause of cancer death after lung cancer among women. The value of advanced imaging platforms such as magnetic resonance imaging (MRI) for early breast cancer detection remains unclear. The paper applies a time reversal beamforming imager for detecting and locating early stage breast cancer tumours from MRI data. In our simulations based on the finite difference,...
We describe the implementation of an image reconstruction algorithm using the parallel processing capabilities of graphics processors. We are designing a new breast scanner which will allow simultaneous acquisition of PET and MRI images. The breast scanner is based on the technology of the much smaller RatCAP PET detector. The image reconstruction of the breast scanner poses a significant computing...
In most instances, multiple-modality visualization of pathologies will present advantages over single-modality studies. For many medical imaging procedures, it is desirable to produce a ldquofusedrdquo output that simultaneously exhibits characteristics of the data from each individual modality to reduce the difficulty of the decision-making process for radiologists. Preprocessing for most data fusion...
Registering features in multiple mammographic views is an important technique to improve breast cancer detection rate. However, nonrigid breast deformation during X-ray imaging poses a severe challenge to the conventional 2D registration methods. We present a method that utilizes a 3D model to facilitate two-view registration by predicting breast deformation. At first, a finite element model of a...
Breast cancer is the most common type of cancer in women worldwide. About ten percent of women are confronted with breast cancer in their lives. Breast cancer can be most efficiently treated if detected at an early sage. Imaging of the breast can be accomplished using several modalities such as: X-ray, MRI, CT, ultrasound, and now molecular imaging. Image registration plays a critical role in breast...
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