公开(公告)号：US11662315B2

公开(公告)日：2023-05-30

申请号：US17516490

申请日：2021-11-01

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE ,  UNIVERSITY HEALTH NETWORK

Inventor： Keith D. Paulsen ,  David W. Roberts ,  Dennis Wirth ,  Brian C. Wilson ,  Mira Sibai

IPC: G01B11/22 ,  G01N21/64 ,  G01N21/47 ,  G01N33/483

CPC classification number: G01N21/6456 ,  G01B11/22 ,  G01N21/4795 ,  G01N33/4833 ,  G01N2201/062

Abstract: A method and device for determining the depth and fluorophore concentration of a fluorophore concentration below the surface of an optically absorbing and scattering medium suitable for use in fluorescence-based surgical guidance such as in tumor resection is described. Long-wavelength stimulus light us used to obtain deep tissue penetration. Recovery of depth is performed by fitting measured modulation amplitudes for each spatial frequency to precomputed modulation amplitudes in a table of modulation amplitudes indexed by optical parameters and depth.

公开(公告)号：US20210239617A1

公开(公告)日：2021-08-05

申请号：US17050745

申请日：2019-04-26

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE ,  UNIVERSITY HEALTH NETWORK

Inventor： Keith D. Paulsen ,  David W. Roberts ,  Dennis Wirth ,  Brian C. Wilson ,  Mira Sibai

IPC: G01N21/64 ,  G01N33/483 ,  G01B11/22 ,  G01N21/47

Abstract: A method and device for determining the depth and fluorophore concentration of a fluorophore concentration below the surface of an optically absorbing and scattering medium suitable for use in fluorescence-based surgical guidance such as in tumor resection is described. Long-wavelength stimulus light us used to obtain deep tissue penetration. Recovery of depth is performed by fitting measured modulation amplitudes for each spatial frequency to precomputed modulation amplitudes in a table of modulation amplitudes indexed by optical parameters and depth.

公开(公告)号：US11977027B2

公开(公告)日：2024-05-07

申请号：US18202823

申请日：2023-05-26

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE ,  UNIVERSITY HEALTH NETWORK

Inventor： Keith D. Paulsen ,  David W. Roberts ,  Dennis Wirth ,  Brian C. Wilson ,  Mira Sibai

IPC: G01B11/22 ,  G01N21/47 ,  G01N21/64 ,  G01N33/483

CPC classification number: G01N21/6456 ,  G01B11/22 ,  G01N21/4795 ,  G01N33/4833 ,  G01N2201/062

Abstract: A method and device for determining the depth and fluorophore concentration of a fluorophore concentration below the surface of an optically absorbing and scattering medium suitable for use in fluorescence-based surgical guidance such as in tumor resection is described. Long-wavelength stimulus light us used to obtain deep tissue penetration. Recovery of depth is performed by fitting measured modulation amplitudes for each spatial frequency to precomputed modulation amplitudes in a table of modulation amplitudes indexed by optical parameters and depth.

公开(公告)号：US20230324301A1

公开(公告)日：2023-10-12

申请号：US18202823

申请日：2023-05-26

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE ,  UNIVERSITY HEALTH NETWORK

Inventor： Keith D. Paulsen ,  David W. Roberts ,  Dennis Wirth ,  Brian C. Wilson ,  Mira Sibai

IPC: G01N21/64 ,  G01N21/47 ,  G01B11/22 ,  G01N33/483

CPC classification number: G01N21/6456 ,  G01B11/22 ,  G01N21/4795 ,  G01N33/4833 ,  G01N2201/062

Abstract: A method and device for determining the depth and fluorophore concentration of a fluorophore concentration below the surface of an optically absorbing and scattering medium suitable for use in fluorescence-based surgical guidance such as in tumor resection is described. Long-wavelength stimulus light us used to obtain deep tissue penetration. Recovery of depth is performed by fitting measured modulation amplitudes for each spatial frequency to precomputed modulation amplitudes in a table of modulation amplitudes indexed by optical parameters and depth.

公开(公告)号：US11162900B2

公开(公告)日：2021-11-02

申请号：US17050745

申请日：2019-04-26

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE ,  UNIVERSITY HEALTH NETWORK

Inventor： Keith D. Paulsen ,  David W. Roberts ,  Dennis Wirth ,  Brian C. Wilson ,  Mira Sibai

IPC: G01N21/64 ,  G01N33/483 ,  G01N21/47 ,  G01B11/22

Abstract: A method and device for determining the depth and fluorophore concentration of a fluorophore concentration below the surface of an optically absorbing and scattering medium suitable for use in fluorescence-based surgical guidance such as in tumor resection is described. Long-wavelength stimulus light us used to obtain deep tissue penetration. Recovery of depth is performed by fitting measured modulation amplitudes for each spatial frequency to precomputed modulation amplitudes in a table of modulation amplitudes indexed by optical parameters and depth.

公开(公告)号：US20220057328A1

公开(公告)日：2022-02-24

申请号：US17516490

申请日：2021-11-01

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE ,  UNIVERSITY HEALTH NETWORK

Inventor： Keith D. Paulsen ,  David W. Roberts ,  Dennis Wirth ,  Brian C. Wilson ,  Mira Sibai

IPC: G01N21/64 ,  G01B11/22 ,  G01N21/47 ,  G01N33/483

Abstract: A method and device for determining the depth and fluorophore concentration of a fluorophore concentration below the surface of an optically absorbing and scattering medium suitable for use in fluorescence-based surgical guidance such as in tumor resection is described. Long-wavelength stimulus light us used to obtain deep tissue penetration. Recovery of depth is performed by fitting measured modulation amplitudes for each spatial frequency to precomputed modulation amplitudes in a table of modulation amplitudes indexed by optical parameters and depth.

公开(公告)号：US11937951B2

公开(公告)日：2024-03-26

申请号：US18159495

申请日：2023-01-25

Applicant: The Trustees of Dartmouth College

Inventor： Kenneth Tichauer ,  Robert W. Holt ,  Frederic Leblond ,  Pablo Valdes ,  Brian W. Pogue ,  Keith D. Paulsen ,  David W. Roberts

IPC: A61B5/00 ,  A61K49/00

CPC classification number: A61B5/7278 ,  A61B5/0071 ,  A61K49/0058 ,  A61B5/0035 ,  A61B5/0062 ,  A61B2576/00

Abstract: A method of generating corrected fluorescence data of concentrations of a targeted fluorophore in tissue of a subject includes administering first and second fluorescent contrast agents to the subject, the first contrast agent targeted to tissue of interest, the second agent untargeted. The tissue is illuminated with light of a first stimulus wavelength and first data is acquired at an appropriate emissions wavelength; the tissue is illuminated at a second stimulus wavelength and second data is acquired at a second emissions wavelength associated with the second agent, the first and second emissions wavelength differ. Difference data is generated by subtracting the second data from the first data. A system provides for stimulus and capture at multiple wavelengths, with image storage memory and subtraction code, to perform the method. Corrected data may form an fluorescence image, or is used to generate fluorescence tomographic images.

公开(公告)号：US20230280577A1

公开(公告)日：2023-09-07

申请号：US18144767

申请日：2023-05-08

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Pablo A. Valdes ,  David W. Roberts ,  Keith D. Paulsen ,  Frederic Leblond

IPC: G02B21/06 ,  G02B21/36 ,  A61B1/06

CPC classification number: G02B21/06 ,  G02B21/36 ,  A61B1/063

Abstract: An imaging system includes an illumination device for illuminating a target. A surgical microscope receives light from the target, the surgical microscope comprising at least one optical output port at which at least a portion of the received light is provided as an output from the surgical microscope. A tunable filter receives the portion of the received light provided as the output from the surgical microscope, the tunable filter being tunable to pass a filtered portion of the received light, the filtered portion of the received light having a plurality of wavelengths selected by the tunable filter and provided as output from the tunable filter. A high-resolution, broad-bandwidth electronic camera receives the light of a plurality of wavelengths selected by the tunable filter, the electronic camera converting the light of a plurality of wavelengths selected by the tunable filter to a plurality of electrical signals. A processor processes the plurality of electrical signals to form an image of the target.

公开(公告)号：US20230233157A1

公开(公告)日：2023-07-27

申请号：US18159495

申请日：2023-01-25

Applicant: The Trustees of Dartmouth College

Inventor： Kenneth Tichauer ,  Robert W. Holt ,  Frederic Leblond ,  Pablo Valdes ,  Brian W. Pogue ,  Keith D. Paulsen ,  David W. Roberts

IPC: A61B5/00 ,  A61K49/00

CPC classification number: A61B5/7278 ,  A61B5/0071 ,  A61K49/0058 ,  A61B5/0062 ,  A61B5/0035 ,  A61B2576/00

Abstract: A method of generating corrected fluorescence data of concentrations of a targeted fluorophore in tissue of a subject includes administering first and second fluorescent contrast agents to the subject, the first contrast agent targeted to tissue of interest, the second agent untargeted. The tissue is illuminated with light of a first stimulus wavelength and first data is acquired at an appropriate emissions wavelength; the tissue is illuminated at a second stimulus wavelength and second data is acquired at a second emissions wavelength associated with the second agent, the first and second emissions wavelength differ. Difference data is generated by subtracting the second data from the first data. A system provides for stimulus and capture at multiple wavelengths, with image storage memory and subtraction code, to perform the method. Corrected data may form an fluorescence image, or is used to generate fluorescence tomographic images.

公开(公告)号：US20160278678A1

公开(公告)日：2016-09-29

申请号：US15044097

申请日：2016-02-15

Applicant: The Trustees of Dartmouth College

Inventor： Pablo Valdes ,  Frederic Leblone ,  Keith D. Paulsen ,  Brian Campbell Wilson ,  David W. Roberts ,  Michael Jermyn

IPC: A61B5/1455 ,  A61B5/00 ,  A61B1/04 ,  A61B5/055 ,  A61B5/1495 ,  A61B1/06 ,  A61B1/00 ,  A61B5/1459 ,  A61B5/145

CPC classification number: A61B5/14556 ,  A61B1/00009 ,  A61B1/00165 ,  A61B1/00193 ,  A61B1/042 ,  A61B1/043 ,  A61B1/05 ,  A61B1/0646 ,  A61B1/0669 ,  A61B1/0684 ,  A61B1/07 ,  A61B1/3132 ,  A61B5/0071 ,  A61B5/0077 ,  A61B5/055 ,  A61B5/14546 ,  A61B5/14553 ,  A61B5/1459 ,  A61B5/1495 ,  A61B5/4836 ,  A61B5/7264 ,  G01J3/0229 ,  G01J3/1256 ,  G01J3/2823 ,  G01J2003/1269 ,  G01J2003/2826

Abstract: An imaging system, such as a surgical microscope, laparoscope, or endoscope or integrated with these devices, includes an illuminator providing patterned white light and/or fluorescent stimulus light. The system receives and images light hyperspectrally, in embodiments using a hyperspectral imaging array, and/or using narrowband tunable filters for passing filtered received light to an imager. Embodiments may construct a 3-D surface model from stereo images, and will estimate optical properties of the target using images taken in patterned light or using other approximations obtained from white light exposures. Hyperspectral images taken under stimulus light are displayed as fluorescent images, and corrected for optical properties of tissue to provide quantitative maps of fluorophore concentration. Spectral information from hyperspectral images is processed to provide depth of fluorophore below the tissue surface. Quantitative images of fluorescence at depth are also prepared. The images are displayed to a surgeon for use in surgery.

Abstract translation: 诸如手术显微镜，腹腔镜或内窥镜或与这些装置集成的成像系统包括提供图案化的白光和/或荧光激发光的照明器。 在使用高光谱成像阵列的实施例中，系统接收并高光图像光，并且/或使用窄带可调滤波器将滤波的接收光传递到成像器。 实施例可以从立体图像构造3-D表面模型，并且将使用在图案化光线中拍摄的图像或使用从白光曝光获得的其它近似来估计目标的光学性质。 在激发光下拍摄的高光谱图像显示为荧光图像，并对组织的光学性质进行校正，以提供荧光团浓度的定量图谱。 处理来自高光谱图像的光谱信息，以提供组织表面下方的荧光团的深度。 还准备了深度荧光的定量图像。 图像显示给外科医生用于手术。