Abstract: A multileaf collimator includes a plurality of movable leaves for shaping a radiotherapy beam, wherein each leaf is independently movable in a same linear travel direction. Each leaf includes a linear array of magnets disposed on a measurement surface of the leaf and an array of magnetoresistive sensors that is disposed proximate the measurement surfaces of the leaves.

Abstract: A multileaf collimator includes a plurality of movable leaves for shaping a radiotherapy beam, wherein each leaf is independently movable in a same linear travel direction. Each leaf includes a linear array of magnets disposed on a measurement surface of the leaf and an array of magnetoresistive sensors that is disposed proximate the measurement surfaces of the leaves.

Abstract: A multileaf collimator includes a plurality of movable leaves for shaping a radiotherapy beam, wherein each leaf is independently movable in a same linear travel direction. Each leaf includes a linear array of magnets disposed on a measurement surface of the leaf and an array of magnetoresistive sensors that is disposed proximate the measurement surfaces of the leaves.

Abstract: A multileaf collimator includes a plurality of movable leaves for shaping a radiotherapy beam, wherein each leaf is independently movable in a same linear travel direction. Each leaf includes a linear array of magnets disposed on a measurement surface of the leaf and an array of magnetoresistive sensors that is disposed proximate the measurement surfaces of the leaves.

Abstract: An ultrasound imaging system uses a magnetic linear motor driven ultrasound scanner, with accurate track and hold operation and/or other motion feedback, to scan a two dimensional or three dimensional area of a sample. The scanner is implemented in a low-power and low-bandwidth handheld device and is connected with a remote image processing system that receives raw data and performs full ultrasound image analysis and creation, allowing the handheld to be used for scanning, pre-processing, and display.

Abstract: An ultrasound imaging system uses a magnetic linear motor driven ultrasound scanner, with accurate track and hold operation and/or other motion feedback, to scan a two dimensional or three dimensional area of a sample. The scanner is implemented in a low-power and low-bandwidth handheld device and is connected with a remote image processing system that receives raw data and performs full ultrasound image analysis and creation, allowing the handheld to be used for scanning, pre-processing, and display.

Abstract: A schema for a document generation system and a method of generating a document. In one embodiment the schema includes a template root element; a template information element; a data table element; and an instances element. In another embodiment, the method includes generating one or more composition elements. Each composition element is configurable to include a level, and is capable of manifesting itself as a document page, a page-level overlay, or an instance-level, conditional overlay. The method also includes laying composition elements on a rendering surface such that elements with a high level replace elements with a low level; wherein each composition element includes pre-authored formal content.

Abstract: A system that may be used to generate documents and for broader uses such as assembling computer-processable components into computer-processable end products. In one form, the system is a document generation system having an assembly facility configured to be coupled to an origination platform; a knowledge base configured to be coupled to the assembly facility and to store objects in an object-relational hierarchy; and a content management system configured to be coupled to the knowledge base, where the content management system is configured to include an object and a rule. The system may be configured to interact with a knowledge base to create a first set of end products, each end product containing an object; apply precedence to the first set of end products; extract rules from the knowledge base; and assemble a second set of documents based upon applying precedence and rules.

Abstract: An optimized elastic modulus reconstruction procedure can estimate the nonlinear elastic properties of vascular wall from intramural strain and pulse wave velocity (PWV) measurements. A noninvasive free-hand ultrasound scanning procedure is used to apply external force, comparable to the force in measuring a subject's blood pressure, to achieve higher strains by equalizing the internal arterial baseline pressure. PWV is estimated at the same location where intramural strain is measured. The reconstructed elastic modulus is optimized and the arterial elastic modulus can be determined and monitored using a simple dual elastic modulus reconstruction procedure.

Abstract: A data structure generation system. The system includes a knowledge base configured to store data structure components as objects in an object-relational hierarchy. Each object is configured to have a precedence, to include one or more rules, and to include content. The knowledge base may be coupled to a data structure assembly facility configured to retrieve one or more cross-referenced data structure components from a database. The one or more data structure components are configured to have a precedence level, and may be processed in a processor to generate a tree having a root node. The tree may be processed beginning at the root node, and objects of low precedence may be overidden with objects of high precedence.

Abstract: Methods and systems for measuring mechanical property of a vascular wall and a method and system for determining health of a vascular structure are provided wherein local deformation of a vessel wall resulting from physiologic pressures with altered transmural forces is measured. A non-invasive free-hand ultrasound scanning-procedure was performed to apply external force, comparable to the force generated in measuring a subject's blood pressure, to achieve higher strains by equalizing the internal arterial baseline pressure. When the applied pressure matched the internal baseline diastolic pressure, strain and strain rate increased by a factor of 10 over a cardiac cycle. Radial arterial strain was assessed in the vessel wall over the entire deformation procedure using a phase-sensitive, two-dimensional speckle-tracking algorithm. An elastic modulus reconstruction procedure was developed to estimate the non-linear elastic properties of the vascular wall.