Feng Y Liu, 44Tucker, GA

5710429, Jan 20, 1998

Apr 6, 1995

8/419623

Robert R. Alfano - Bronx NY
Feng Liu - Bronx NY
Quan-Zhen Wang - New York NY
Ping P. Ho - Great Neck NY
Leming M. Wang - Flushing NY
Xiangchun Liang - Bronx NY

G01N 2149
G01N 2159

2503581

A system for imaging an object in or behind a highly scattering medium includes a light source for illuminating the highly scattering medium with a beam of light. The light emerging form the highly scattering medium consists of a ballistic component, snake-like component and a diffuse component. A 4F Fourier imaging system including a Fourier spatial filter located at 2F is used to form a time gated image of the emerging light, the time gated image consisting primarily of the ballistic component and the snake-like component.

5931789, Aug 3, 1999

Feb 7, 1997

8/797028

Robert R. Alfano - Bronx NY
Wei Cai - Bronx NY
Feng Liu - Bronx NY
Melvin Lax - Summit NJ
Bidyut B. Das - Flushing NY

The Research Foundation City College of New York - New York NY

A61B 500

600473

A method for imaging objects in highly scattering turbid media. According to one embodiment of the invention, the method involves using a plurality of intersecting source/detectors sets and time-resolving equipment to generate a plurality of time-resolved intensity curves for the diffusive component of light emergent from the medium. For each of the curves, the intensities at a plurality of times are then inputted into the following inverse reconstruction algorithm to form an image of the medium: ##EQU1## wherein W is a matrix relating output at source and detector positions r. sub. s and r. sub. d, at time t, to position r,. LAMBDA. is a regularization matrix, chosen for convenience to be diagonal, but selected in a way related to the ratio of the noise, to fluctuations in the absorption (or diffusion) X. sub. j that we are trying to determine:. LAMBDA. sub. ij =. lambda. sub. j. delta. sub. ij with. lambda. sub. j =/

5813988, Sep 29, 1998

Mar 18, 1996

8/618471

Robert R. Alfano - Bronx NY
Wei Cai - Bronx NY
Feng Liu - Bronx NY
Melvin Lax - Summit NJ
Bidyut B. Das - Flushing NY

Research Foundation - New York NY

A61B 500

600476

A method for imaging objects in highly scattering turbid media. According to one embodiment of the invention, the method involves using a plurality of intersecting source/detectors sets and time-resolving equipment to generate a plurality of time-resolved intensity curves for the diffusive component of light emergent from the medium. For each of the curves, the intensities at a plurality of times are then inputted into the following inverse reconstruction algorithm to form an image of the medium: X. sup. (k+1). spsp. T =�Y. sup. T W+X. sup. (k). spsp. T. LAMBDA. !�W. sup. T W+. LAMBDA. !. sup. -1 wherein W is a matrix relating output at detector position r. sub. d, at time t, to source at position r. sub. s,. LAMBDA. is a regularization matrix, chosen for convenience to be diagonal, but selected in a way related to the ratio of the noise, to fluctuations in the absorption (or diffusion) X. sub. j that we are trying to determine:. LAMBDA. sub. ij =. lambda. sub. j. delta. sub. ij with. lambda. sub.

6208886, Mar 27, 2001

Apr 3, 1998

9/054743

Robert R. Alfano - Bronx NY
Yici Guo - Jackson Height NY
Feng Liu - Bronx NY
Ping Pei Ho - Great Neck NY

The Research Foundation of City College of New York - New York NY

A61B5/00

600473

An apparatus utilizing non-linear optical signals for use in constructing a three-dimensional tomographic map of an in vivo biological tissue for medical disease detection purposes. In one embodiment, said apparatus comprises a stage for supporting the in vivo biological tissue; a laser for illuminating the in vivo biological tissue with a focused beam of laser light, the light emerging from the in vivo biological tissue comprising fundamental light, harmonic wave light, and fluorescence due to multi-photon excitation; a filter for selectively passing only at least one of the harmonic wave light and the fluorescence; one or more detectors for individually detecting each of the harmonic wave light and the fluorescence selectively passed; and a mechanism for moving the laser relative to the stage in x, y and z directions.

5949077, Sep 7, 1999

Jan 28, 1994

8/189124

Robert R. Alfano - Bronx NY
Kwong Mow Yoo - New York NY
Samir Ahmed - New York NY
Zhi-Wei Zang - New York NY
Feng Liu - Bronx NY

G01N 2464

2504591

A technique for forming an image of an object in or behind a scattering medium. In one embodiment, the object is made luminescent, and the luminescent light is selected for imaging while the illuminating light is filtered out. The quality of the image can be further improved by selected the portion of the luminescence spectrum that is strongly absorbed by the scattering medium.

6215587, Apr 10, 2001

Jun 6, 1996

8/659615

Robert R. Alfano - Bronx NY
Gordon E. Anderson - Rego Park NY
Feng Liu - Bronx NY

G02B 2100

359368

A method and system for imaging a small object in or behind a highly scattering medium comprises a laser source for illuminating the object with an ultrashort collimated beam of light and a novel microscope for forming a magnified image of the object using light emergent from the highly scattering medium, the emergent light consisting of a scattered component and a non-scattered component. The novel microscope comprises an objective, an eyepiece and an aperture centered at the back focal plane of the objective. The aperture, which may be of a fixed or variable size and controlled electronically or by a computer serves to spatially filter the scattered light component of the light emergent from the highly scattering medium. The system may also comprise a streak camera or similar time resolving device positioned at the image plane of the microscope for temporally filtering the scattered light component of the light emergent from the highly scattering medium.

2015001, Jan 15, 2015

Feb 22, 2013

14/380620

- New York NY, US
Bradley S. Peterson - New York NY, US
Feng Liu - New York NY, US
Alayar Kangarlu - New York NY, US

G01R 33/36
G01R 33/48

324309, 324318

Arrangement, magnetic resonance imaging system and method can be provided, according to certain exemplary embodiments of the present disclosure. For example, a plurality of radio frequency (RF) coil elements can be utilized which can include at least one coil element that is coupled to and non-standard impedance matched with at least one preamplifier.