公开(公告)号：US20220108461A1

公开(公告)日：2022-04-07

申请号：US17423597

申请日：2020-01-17

Applicant: University Health Network

Inventor： Ralph S. DACOSTA ,  Kathryn OTTOLINO-PERRY ,  Christopher GIBSON

IPC: G06T7/33 ,  G16H30/40 ,  G01N21/64 ,  G06T7/38

Abstract: The present disclosure provides methods, systems, and devices for coregistering imaging data to form three-dimensional superimposed images of target such as a tumor or a surgical bed. A three-dimensional map can be generated by projecting infrared radiation at a target area, receiving reflected infrared radiation, and measuring depth of the target area. A three-dimensional white light image can be created from a captured two-dimensional white light image and the three-dimensional map. A three-dimensional fluorescence image can be created from a captured two-dimensional fluorescence image and the three-dimensional map. The three-dimensional white light image and the three-dimensional fluorescence image can be aligned using one or more fiducial markers to form a three-dimensional superimposed image. The superimposed image can be used to excise cancerous tissues, for example, breast tumors. Images can be in the form of videos.

公开(公告)号：US20220082500A1

公开(公告)日：2022-03-17

申请号：US17423572

申请日：2020-01-17

Applicant: University Health Network

Inventor： Ralph S. DACOSTA ,  Kathryn OTTOLINO-PERRY ,  Christopher GIBSON ,  Nayana Thalanki ANANTHA ,  Cristiana O'BRIEN

IPC: G01N21/64 ,  G01N33/50

Abstract: A tissue phantom is disclosed. The tissue phantom includes a first portion having the optical properties of healthy tissue and a second portion having the optical properties of cancerous tissue. Additionally, a method of calibrating an optical instrument is disclosed. The method includes illuminating a tissue phantom with excitation light from the optical instrument, detecting optical emissions emitted by the tissue phantom in response to illumination with the excitation light, and calibrating the optical instrument based upon the detected fluorescence.

公开(公告)号：US20200367818A1

公开(公告)日：2020-11-26

申请号：US16966293

申请日：2019-02-01

Applicant: UNIVERSITY HEALTH NETWORK

Inventor： Ralph DaCOSTA ,  Christopher GIBSON ,  Kathryn OTTOLINO-PERRY ,  Nayana Thalanki ANANTHA ,  Susan Jane DONE ,  Wey-Liang LEONG ,  Alexandra M. EASSON

IPC: A61B5/00 ,  A61B90/30 ,  A61B90/00 ,  A61K41/00 ,  A61K49/00

Abstract: A method of assessing surgical margins is disclosed. The method includes, subsequent to administration of a compound configured to induce emissions of between about 600 nm and about 660 nm in cancerous tissue cells, positioning a distal end of a handheld, white light and fluorescence-based imaging device adjacent to a surgical margin. The method also includes, with the handheld device, substantially simultaneously exciting and detecting autofluorescence emissions of tissue cells and fluorescence emissions of the induced wavelength in tissue cells of the surgical margin. And, based on a presence or an amount of fluorescence emissions of the induced wavelength detected in the tissue cells of the surgical margin, determining whether the surgical margin is substantially free of at least one of precancerous cells, cancerous cells, and satellite lesions. The compound may be a non-activated, non-targeted compound such as ALA.