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A natural magnetic resonance imaging (MRI) contrast based on the pulp of a fruit "Euterpe Oleracea", popularly known as Acai, was investigated. T1 and T2 contrasted images shown the effects of the contrast agent increasing the ability to visualize the contour of segments of the gastrointestinal tract
In this paper, a framework combining the atlas registration and the fuzzy connectedness for the automatic segmentation of abdominal organs is proposed. First, a pre-labeled atlas is registered onto the subject to establish the proper correspondence between the atlas and subject. Second, we utilize the fuzzy connectedness framework to segment organs of interest from the subject image. Taking advantage...
With the increasing importance of molecular and cellular biology, a new type of medicine, molecular based medicine, is now developing. This will significantly alter the way in which medicine is practiced. Central to these developments is the concept of the biological continuum (BC). Medicine today is often practiced at one or two of these levels, i.e. there is generally no vertically integrated approach...
Magnetic resonance electrical impedance tomography (MREIT) has been developed as a new medical imaging modality providing high-resolution conductivity and current density images. This paper is about MREIT of the breast. To show the feasibility of breast MREIT, we carried numerical simulations and breast phantom experiments. We found that an anomaly with 4 mm diameter can be visualized in a reconstructed...
Quantification of the sensitivity of the electro-cardiographic forward problem to various parameters can effectively direct the generalization of patient specific models without significant loss in accuracy. To this purpose we applied polynomial chaos based stochastic finite elements to assess the effect of variations in the distributions of tissue conductivity in a two-dimensional torso geometry...
Contrast-enhanced breast MRI has been shown to have very high sensitivity in the detection of breast cancers. A new computerized classification method for differentiating between benign and malignant lesions on breast MRIs was developed. This method was based on temporal feature analysis. We experimented with a set of thresholds of the contrast uptake and washout speed to automatically determine suspicious...
MRI and image quantitation play an expanding role in modern drug research, because MRI offers high resolution and non-invasive ability, and provides excellent soft tissue contrast. Moreover, with development of effective image segmentation and analysis methods, in-vivo and serial tissue growth measurements could be assessed. In the study, MR image acquisition and analysis protocol were established...
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