Abstract:
A method, system and computer readable medium for an intelligent search display into which an automated computerized image analysis has been incorporated. Upon viewing an unknown mammographic case, the display shows both the computer classification output as well as images of lesions with known diagnoses (e.g., malignant vs. benign) and similar computer-extracted features. The similarity index used in the search can be chosen by the radiologist to be based on a single feature, multiple features, or on the computer estimate of the likelihood of malignancy. Specifically the system includes the calculation of features of images in a known database, calculation of features of an unknown case, calculation of a similarity index, display of the known cases along the probability distribution curves at which the unknown case exists. Techniques include novel developments and implementations of computer-extracted features for similarity calculation and novel methods for the display of the unknown case amongst known cases with and without the computer-determined diagnoses.
Abstract:
Cette invention se rapporte à des polynucléotides isolés et purifiés codant les régions variables lourdes et légères d'un anticorps 5H7, ainsi qu'à des procédés d'utilisation de ces gènes pour conférer à une cellule des propriétés de mort cellulaire programmée.
Abstract:
Methods and pharmaceuticals for inhibiting or preventing metastasis formation in animals, including humans, having primary tumors, through the administration of phosphorothioates including their thiol and disulfide metabolites are disclosed. These compounds stimulate angiostatin levels, inhibit matrix metalloproteinases (MMPs), and stimulate manganese superoxidase dismutase (MnSOD). Phosphorothioates, of which amifostine is an example, can be administered as a combination therapy with traditional cancer therapies, including chemotherapy, radiotherapy, surgery, immunotherapy, hormone therapy and gene-therapy. Inhibition or prevention of metastasis by phosphorothioates is independent of tumor type, including adenocarcinomas and sarcomas.
Abstract:
A method for the automated segmentation of an abnormality in a medical image, including acquiring first image data representative of the medical image; locating a suspicious site at which the abnormality may exist; establishing a seed point within the suspicious site; and preprocessing the suspicious site with a constraint function to produce second image data in which pixel values distant of the seed point are suppressed.
Abstract:
The present invention is drawn to methods for genome-wide index in a particular cell type, and for genome-wide identification of differentially expressed genes. Also provided is an improved set of poly-dT primers anchored at their 3' ends.
Abstract:
An automated method (Figure 1(a)), storage medium, and system (1000) for analyzing bone. Digitized image data corresponding to an image of the bone are obtained. Next, there is determined, based on the digital images, a measure of bone mineral density (BMD) and at least one of a measure of bone geometry, a Minkowski Dimension, and a trabecular orientation. The strength of the bone is estimated based upon the measure of BMD and at least one of the measure of bone geometry, the Minkowski Dimension, and the trabecular orientation. To improve bone texture analysis, the present invention also provides a novel automated method, storage medium, and system in which digital image data corresponding to an image of the bone is obtained, and a region of interest (ROI) is selected within the bone (Figure 11(b)). A fractal characteristic of the image data within the ROI using an artificial neural network is extracted. The strength of the bone is estimated based at least in part on the extracted fractal characteristic. To perform bone analysis with an improved measure of bone mineral density, the present invention also provides a novel automated method, storage medium, and system in which digital image data corresponding to an image of the bone is obtained. A measure of normalized bone density (BMD) corresponding to a volumetric bone mineral density of the bone is determined, and the strength of the bone is estimated based at least in part on the normalized BMD (Figure 10(b)).
Abstract:
The present invention relates generally to the fields of angiogenesis and cancer therapy. More particularly, it concerns the use of anti-angiogenic factors in cancer therapy. The present invention demonstrates that angiostatin or endostatin can sensitize a cell to radiation therapy. Methods and compositions for inhibiting growth, sensitizing a cell to radiotherapy and treating cancer growth by first inhibiting angiogenesis and then employing radiotherapy are described.
Abstract:
A method, system and computer readable medium for the computerized assessment of breast cancer risk, wherein a digital image (1100) of a breast is obtained and at least one feature area extracted (1102) from a region of interest in the digital. The extracted features (1102) are compared with a predetermined model (1106) associating patterns of the extracted features with a risk estimate (1108). Preferred features to be extracted from the digital image include: 1) one or more features based on absolute values of gray levels of pixels in said region of interest; 2) one or more features based on gray-level histogram analysis of pixels in said region of interest; (3) one or more features based on Fourier analysis of pixels values in said region of interest; 4) one or more features based on a spatial relationship among gray levels of pixels within the region of interest.
Abstract:
A method, system, and computer product for the automated segmentation of the lung fields and costophrenic angle (CP) regions in posteroanterior (PA) chest radiographs, wherein image segmentation based on gray-level threshold analysis (S3, 1003) is performed by applying an iterative global gray-level thresholding method (S5, 1005) to a chest image based on the features of a global gray-level histogram (S3, 1003). Features of the regions in a binary image constructed at each iteration are identified and analyzed to exclude regions external to the lung fields. The initial lung contours that result from this global process are used to facilitate a local gray-level thresholding method (S6, 1006). Individual regions-of-interest (ROIs) are placed along the initial contour. A procedure is implemented to determine the gray-level thresholds to be applied to the pixels within the individual ROIs. The result is a binary image, from which final contours are constructed.
Abstract:
A method and apparatus for discrimination of nodules and false positive in digital chest radiographs, using a wavelet snake technique (1802; 1804; 1806; 1808). The wavelet snake is a deformable contour designed to identify the boundary of a relatively round object (1900). The shape of the snake is determined by a set of wavelet coefficient in a certain range of scales. Portions of the boundary of a nodule are first extracted using a multiscale edge representation. The multiscale edge are then fitted (2000; 1814) by a gradient descent procedure which deforms the shape of a wavelet snake by changing its wavelet coefficients. The degree of overlap between the fitted snake and the multiscale edges is calculated and used as a fit quality indicator for discrimination of nodules and false detection (1816; 1818; 1820).