公开(公告)号：US20170172534A1

公开(公告)日：2017-06-22

申请号：US15325357

申请日：2015-07-23

申请人： THE UNIVERSITY OF SYDNEY

发明人： Chun-Chien SHIEH ,  John KIPRITIDIS ,  Ricky O'BRIEN ,  Zdenka KUNCIC ,  Paul KEALL

IPC分类号： A61B6/00 ,  G06T7/11 ,  A61B5/00 ,  G06T11/00 ,  A61B6/03 ,  A61B5/055

CPC分类号： A61B6/5258 ,  A61B5/055 ,  A61B5/7203 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/505 ,  A61B6/5205 ,  A61B6/5217 ,  G06T7/11 ,  G06T11/008 ,  G06T2207/10081 ,  G06T2207/10088

摘要： A method of adaptive suppression of over-smoothing in noise/artefact reduction techniques such as total variation minimization or other compressed sensing strategies for Cone Beam Computed Tomography (CBCT) images, the method including the steps of: (a) inputting a CBCT image; (b) identifying the anatomical structures of interest in the CBCT images by exploiting their likely shapes, attenuation coefficients, sizes, positions, or any other similar features that can be used to identify them from an image; (c) extracting intensity, gradient, or other image-related information of the identified anatomical structures from the CBCT image; (d) adaptively suppressing over-smoothing in noise/artefact reduction techniques such as total-variation minimization or other compressed sensing strategies at the anatomical structures of interest using the information of the anatomical structures extracted previously.

公开(公告)号：US20230248442A1

公开(公告)日：2023-08-10

申请号：US18014691

申请日：2021-07-08

申请人： UNIVERSITY OF SYDNEY

发明人： Nicholas HINDLEY ,  Paul KEALL ,  Chun-Chien SHIEH ,  Suzanne LYDIARD

IPC分类号： A61B34/20 ,  A61N5/10 ,  G06T7/11

CPC分类号： A61B34/20 ,  A61N5/1037 ,  G06T7/11 ,  A61B2034/2046 ,  G06T2207/10076

摘要： Systems, methods, and apparatus are disclosed for cardiac structure tracking. An example method includes segmenting a diaphragm or respiratory surrogate, heart, and target. The method also includes performing a peak-exhale to peak-inhale registration and generating a respiratory motion model. The method further includes tracking the diaphragm using X-ray imaging and estimating a target position for an x-ray guided cardiac radioablation treatment. The example method provides directly, precisely controlled x-ray guided cardiac radioablation that accurately targets the substrates of cardiac ablation while minimizing doses to healthy tissue.