Jonathan Gang Li

US Patent:

7142635, Nov 28, 2006

Filed:

Apr 8, 2005

Appl. No.:

11/102083

Inventors:

Srijit Kamath - Gainesville FL, US
Sartaj Sahni - Gainesville FL, US
Jonathan Gang Li - Gainesville FL, US
Jatinder Palta - Gainesville FL, US
Sanjay Ranka - Gainesville FL, US

Assignee:

University of Florida Research Foundation, Inc. - Gainesville FL

International Classification:

A61N 5/10

US Classification:

378 65

Abstract:

A method of delivering intensity modulated radiation therapy (IMRT) is disclosed. An intensity profile for the treatment of a patient is provided which spans a prescribed field width and includes a discrete profile having intensity values at each of a plurality of sample points bounded by the prescribed width. The prescribed width is compared to a maximum field width provided by the radiation treatment system. The intensity profile is split into a plurality of intensity profile portions, each having respective widths less than the maximum width if the prescribed width is greater than the maximum width. The prescribed field is also divided into a plurality of different profile portion split arrangements. A monitor unit (MU) efficiency is calculated for each of the arrangements. One of the arrangements is selected for delivery by the system using a leaf sequencing method.

US Patent:

7440862, Oct 21, 2008

Filed:

May 10, 2004

Appl. No.:

10/842290

Inventors:

Jonathan Qiang Li - Mountain View CA, US
Daniel A. Usikov - Newark CA, US

Assignee:

Agilent Technologies, Inc. - Santa Clara CA

International Classification:

G06F 11/00
G06F 17/00

US Classification:

702108, 702181

Abstract:

Embodiments of the present invention use the results of a plurality of defect detecting tests and adjust the result of each test in a manner that reflects the accuracy of the test that produced it. A manufactured unit can then be evaluated using a mathematical combination of the adjusted results.

US Patent:

7573978, Aug 11, 2009

Filed:

Jul 11, 2006

Appl. No.:

11/995303

Inventors:

Srijit Kamath - Gainesville FL, US
Sartaj Kumar Sahni - Gainesville FL, US
Jonathan Li - Gainesville FL, US
Jatinder Palta - Gainesville FL, US
Sanjay Ranka - Gainesville FL, US

Assignee:

University of Florida Research Foundation, Inc. - Gainesville FL

International Classification:

A61N 5/10

US Classification:

378 65, 378152

Abstract:

A method and associated system for delivering intensity-modulated radiation therapy (IMRT) uses variable feathering field splitting for intensity modulated fields of large size. A processor controls a beam-shaping device that splits the radiation beam into a plurality of radiation fields delivered to a patient. The processor in cooperation with the beam-shaping device implements a variable feathering method which includes providing an intensity matrix for the treatment of a patient, the intensity matrix having a plurality of rows and columns for spanning a prescribed radiation field including a prescribed field width. The prescribed width is compared to a maximum field width provided by the radiation treatment system. The intensity matrix is split into a plurality of spatially overlapping intensity submatrices by variably feathering the intensity matrix when the prescribed width exceeds the maximum field width, Radiotherapy is then provided to the patient using a leaf sequencing method to generate the submatrices.

US Patent:

7869647, Jan 11, 2011

Filed:

Apr 2, 2004

Appl. No.:

10/817660

Inventors:

Jonathan Qiang Li - Mountain View CA, US

Assignee:

Agilent Technologies, Inc. - Santa Clara CA

International Classification:

G06K 9/62
G06K 9/66
G06K 9/46

US Classification:

382159, 382190, 382225, 382228

Abstract:

Representative embodiments are directed to systems and methods for processing training data for a statistical classification application. In one embodiment, confidence values are calculated for training data elements to identify the probabilities of the training data elements belonging to identified classes. An interactive scatter plot is generated using the calculated confidence values. The scatter plot visually indicates the confidence values of points in the scatter plot. Accordingly, the user is able to identify potentially misclassified training data elements. The user may select training data elements from the scatter plot and reclassify training elements as appropriate. Upon reclassification, the confidence values may be recalculated and the scatter plot revised.

US Patent:

20030189904, Oct 9, 2003

Filed:

Apr 4, 2002

Appl. No.:

10/116429

Inventors:

Jonathan Li - Mountain View CA, US

International Classification:

G01R031/08
G06F011/00
G08C015/00

US Classification:

370/252000, 370/389000

Abstract:

A method and a system monitor fractal Internet Protocol traffic in a data network. The method determines a sampling interval and a sample size for sampling the data traffic such that the sampling has a predetermined response time and has a predetermined error tolerance that is bounded. The system employs the determined sampling interval and sample size for monitoring. The method comprises estimating a population variance from initial sampled data; estimating an index of self-similarity for the population; and computing the sampling interval and the sample size by simultaneously solving a pair of equations. The system comprises a probe that samples the traffic and generates sampled data; a processor, a memory, and a computer program stored in the memory and executed by the processor. The computer program comprises instructions that, when executed by the processor, determine the sampling interval and the sample size.

US Patent:

20030204507, Oct 30, 2003

Filed:

Apr 25, 2002

Appl. No.:

10/132626

Inventors:

Jonathan Li - Redwood City CA, US
David Smith - San Jose CA, US
Lee Barford - San Jose CA, US
John Heumann - Loveland CO, US

International Classification:

G06N005/00

US Classification:

707/100000

Abstract:

Hierarchical classification of samples. First stage classification identifies most members of the majority class and removes them from further consideration. Second stage classification then focuses on discriminating between the minority class and the greatly reduced number of majority class samples lying near the decision boundary.

US Patent:

20050097069, May 5, 2005

Filed:

Oct 31, 2003

Appl. No.:

10/699542

Inventors:

Jonathan Li - Mountain View CA, US
Lee Barford - San Jose CA, US

International Classification:

G06G007/00
G06F015/18
G06N005/02
G06F017/00

US Classification:

706046000, 706019000

Abstract:

Optimizing tester performance using Operating Characteristics curves. By modeling the Operating Characteristics of classifiers used in testing systems, tester performance is optimized. Classifiers are constructed using sample data. Operating Characteristic curves for each classifier are constructed, each Operating Characteristics curve representing a design alternative. The Operating Characteristic curves are combined with cost models from which design decisions may be made.

US Patent:

20050148841, Jul 7, 2005

Filed:

Dec 15, 2003

Appl. No.:

10/736023

Inventors:

Srijit Kamath - Gainesville FL, US
Sartaj Sahni - Gainesville FL, US
Jatinder Palta - Gainesville FL, US
Sanjay Ranka - Gainesville FL, US
Jonathan Li - Gainesville FL, US

International Classification:

A61B005/05

US Classification:

600407000

Abstract:

A method of delivering radiation treatment using multi-leaf collimation includes the step of providing a radiation fluence map which includes an intensity profile. The fluence map is converted into a preliminary leaf sequence, wherein the preliminary leaf sequence minimizes machine on-time and is generated without leaf movement constraints. The leaf movement constraint is imposed on the preliminary leaf sequence. At least one constraint elimination algorithm is then applied, the algorithm adjusting the preliminary leaf sequence to minimize violations of the constraint while providing the desired fluence map and minimized radiation on-time. The method can be applied to SMLC and DLMC systems, and can include adjustment for the tongue-and-groove effect.