公开(公告)号：US11890125B2

公开(公告)日：2024-02-06

申请号：US17479645

申请日：2021-09-20

Applicant: Accuray, Inc.

Inventor： Jacob Shea ,  Brandon Frederick ,  Eric Schnarr ,  Daniel Gagnon

IPC: A61B6/00 ,  A61B6/02 ,  A61N5/10 ,  G06T11/00 ,  A61B6/03 ,  A61B6/06 ,  A61B6/08 ,  G06T7/30 ,  A61B6/04

CPC classification number: A61B6/5282 ,  A61B6/027 ,  A61B6/032 ,  A61B6/06 ,  A61B6/405 ,  A61B6/4078 ,  A61B6/4085 ,  A61B6/469 ,  A61B6/488 ,  A61B6/5205 ,  G06T11/005 ,  A61B6/025 ,  A61B6/03 ,  A61B6/035 ,  A61B6/0407 ,  A61B6/08 ,  A61B6/4014 ,  A61B6/4021 ,  A61B6/4028 ,  A61B6/4064 ,  A61B6/4435 ,  A61B6/4441 ,  A61B6/4458 ,  A61B6/481 ,  A61B6/482 ,  A61B6/483 ,  A61B6/484 ,  A61B6/541 ,  A61B6/582 ,  A61N5/107 ,  A61N5/1049 ,  A61N5/1067 ,  A61N5/1071 ,  A61N5/1082 ,  A61N2005/1085 ,  A61N2005/1091 ,  A61N2005/1095 ,  G06T7/30 ,  G06T11/008 ,  G06T2207/10081 ,  G06T2210/41 ,  G06T2211/404 ,  G06T2211/412 ,  G06T2211/424 ,  G06T2211/428 ,  G06T2211/432

Abstract: A multimodal imaging apparatus, comprising a rotatable gantry system positioned at least partially around a patient support, a first source of radiation coupled to the rotatable gantry system, the first source of radiation configured for imaging radiation, a second source of radiation coupled to the rotatable gantry system, the second source of radiation configured for at least one of imaging radiation or therapeutic radiation, wherein the second source of radiation has an energy level more than the first source of radiation, and a second radiation detector coupled to the rotatable gantry system and positioned to receive radiation from the second source of radiation, and a processor configured to combine first measured projection data based on the radiation detected by the first detector with second measured projection data based on the radiation detected by the second detector, and reconstruct an image based on the combined data, wherein the reconstructing comprises at least one of correcting the second measured projection data using the first measured projection data, correcting the first measured projection data using the second projection data, and distinguishing different materials imaged in the combined data using the first measured projection data and the second measured projection.

公开(公告)号：US11605186B2

公开(公告)日：2023-03-14

申请号：US17363959

申请日：2021-06-30

Applicant: ACCURAY INC.

Inventor： Jacob Shea ,  Chuanyong Bai

IPC: A61B5/00 ,  G06T11/00 ,  A61B6/06 ,  A61B6/00

Abstract: A radiological imaging apparatus is provided that includes a radiation source for emitting radiation, a radiation detector positioned to receive radiation emitted by the radiation source and generate radiation data, wherein the radiation data comprises a primary component and a secondary component, and a data processing system. The data processing system is configured to apply image transforms to the primary component using generating functions, build a scatter model basis using the transforms, adjust parameters in the scatter model to fit scatter using the scatter model basis, generate an estimated scatter image by using the fitted scatter model, and modify the radiation data using the scatter image to decrease the scatter in the radiation data thereby generating a scatter corrected image.

公开(公告)号：US11413002B2

公开(公告)日：2022-08-16

申请号：US16694148

申请日：2019-11-25

Applicant: Accuray, Inc.

Inventor： Daniel Gagnon ,  Zhicong Yu ,  Jacob Shea

IPC: G06T11/00 ,  A61B6/00 ,  A61B6/03 ,  A61B6/06 ,  A61B6/02 ,  A61N5/10 ,  A61B6/08 ,  G06T7/30 ,  A61B5/055 ,  A61B6/04

Abstract: Multimodal imaging apparatus and methods include a rotatable gantry system with multiple sources of radiation comprising different energy levels (for example, kV and MV). Fast slip-ring technology and helical scans allow data from multiple sources of radiation to be combined or utilized to generate improved images and workflows, including for IGRT. Features include large field-of-view (LFOV) MV imaging, kV region-of-interest (ROI) imaging, and scalable field-of-view (SFOV) dual energy imaging.

公开(公告)号：US11154269B2

公开(公告)日：2021-10-26

申请号：US16694145

申请日：2019-11-25

Applicant: Accuray, Inc.

Inventor： Jacob Shea ,  Brandon Frederick ,  Eric Schnarr ,  Daniel Gagnon

IPC: A61B6/00 ,  A61B6/03 ,  A61B6/02 ,  G06T11/00 ,  A61B6/06 ,  A61N5/10 ,  A61B6/08 ,  G06T7/30 ,  A61B5/055 ,  A61B6/04

Abstract: Multimodal imaging apparatus and methods include a rotatable gantry system with multiple sources of radiation comprising different energy levels (for example, kV and MV). Fast slip-ring technology and helical scans allow data from multiple sources of radiation to be combined or utilized to generate improved images and workflows, including for IGRT. Features include increasing the precision of spatial registrations between respective image sets to allow more precise radiation treatment delivery, reducing image artifacts (e.g., scatter, metal and beam hardening, image blur, motion, etc.), and utilization of dual energy imaging (e.g., for material separation and quantitative imaging, patient setup, online adaptive IGRT, etc.).

公开(公告)号：US11375970B2

公开(公告)日：2022-07-05

申请号：US16694161

申请日：2019-11-25

Applicant: Accuray, Inc.

Inventor： Jacob Shea ,  Daniel Gagnon ,  Eric Schnarr ,  Edward Henry Chao ,  Petr Jordan ,  Calvin R. Maurer, Jr.

IPC: A61B6/00 ,  G06T11/00 ,  A61B6/03 ,  A61B6/06 ,  A61B6/02 ,  A61N5/10 ,  A61B6/08 ,  G06T7/30 ,  A61B5/055 ,  A61B6/04

Abstract: A radiotherapy delivery device is provided. The device includes a source of therapeutic radiation and a first detector positioned to receive radiation from the source of therapeutic radiation. The device also includes a source of imaging radiation and a second detector positioned to receive radiation from the source of imaging radiation. A collimator assembly is positioned relative to the second source of radiation to selectively control a shape of a radiation beam emitted by the second radiation source to selectively expose part or the whole of the second radiation detector. A reconstruction processor can be operatively coupled to the detector and configured to generate patient images based on radiation received by the second detector from the second source of radiation. The device is configured to move from one imaging geometry to another using all or part of the second detector.

公开(公告)号：US20200171328A1

公开(公告)日：2020-06-04

申请号：US16694161

申请日：2019-11-25

Applicant: Accuray, Inc.

Inventor： Jacob Shea ,  Daniel Gagnon ,  Eric Schnarr ,  Edward Henry Chao ,  Petr Jordan ,  Calvin R. Maurer, JR.

IPC: A61N5/10

Abstract: A radiotherapy delivery device is provided. The device includes a source of therapeutic radiation and a first detector positioned to receive radiation from the source of therapeutic radiation. The device also includes a source of imaging radiation and a second detector positioned to receive radiation from the source of imaging radiation. A collimator assembly is positioned relative to the second source of radiation to selectively control a shape of a radiation beam emitted by the second radiation source to selectively expose part or the whole of the second radiation detector. A reconstruction processor can be operatively coupled to the detector and configured to generate patient images based on radiation received by the second detector from the second source of radiation. The device is configured to move from one imaging geometry to another using all or part of the second detector.