-
公开(公告)号：US20240265591A1
公开(公告)日：2024-08-08
申请号：US18164372
申请日：2023-02-03
发明人： Bipul Das , Utkarsh Agrawal , Prasad Sudhakara Murthy , Risa Shigemasa , Kentaro Ogata , Yasuhiro Imai
CPC分类号： G06T11/005 , G06T3/4053 , G06V10/44 , G06V10/806 , G06T2207/10081 , G06T2207/10116 , G06T2211/408
摘要： Methods and systems are provided for interpolating missing views in dual-energy computed tomography data. In one example, a method includes obtaining a first sinogram missing a plurality of views and a second sinogram missing a different plurality of views, the first sinogram acquired with a first X-ray source energy during a scan and the second sinogram acquired with a second, different X-ray source energy during the scan; initializing each of the first sinogram and the second sinogram to form a first initialized sinogram and a second initialized sinogram; entering the first initialized sinogram and the second initialized sinogram into the same or different interpolation models trained to output a first filled sinogram based on the first initialized sinogram and output a second filled sinogram based on the second initialized sinogram; and reconstructing one or more images from the first filled sinogram and the second filled sinogram.
-
2.发明授权公开(公告)号：US11844639B2
公开(公告)日：2023-12-19
申请号：US17514201
申请日：2021-10-29
发明人： Jiahua Fan , Ming Yan , Jed Douglas Pack , Priti Madhav , Kentaro Ogata , Ken Arai
CPC分类号： A61B6/482 , A61B6/032 , A61B6/5205 , G06N3/02
摘要： A method includes acquiring a first dataset of projection measurements at a first energy spectrum and a second dataset of projection measurements at a second energy spectrum different from the first energy spectrum by switching between acquiring the first dataset for a set number of consecutive views at different projection angles at the first energy spectrum and acquiring the second dataset for the set number of consecutive views at different projection angles at the second energy spectrum. The set number of consecutive views is greater than one. The method includes supplementing both the first dataset with estimated projection measurements at the first energy spectrum and the second dataset with estimated projection measurements at the second energy spectrum to provide missing projection measurements at different projection angles not acquired during the imaging scan for the first dataset and the second dataset.
-
公开(公告)号：US20230380780A1
公开(公告)日：2023-11-30
申请号：US18324525
申请日：2023-05-26
发明人： Kentaro Ogata
CPC分类号： A61B6/0487 , A61B6/0407 , A61B6/547 , A61B6/488
摘要： A medical device is described. The medical device includes a table and a processor. The processor executes operations including, driving the table based on an offset for correcting the table height positional offset to position the imaging location of a subject at a prescribed table height position, determining a center of gravity of the imaging location of the subject in the height direction of the table based on the medical image of the imaging location of the subject, calculating a difference between the prescribed position and the center of gravity as positional deviation of table height, and storing the positional deviation. The processor further executes operations including obtaining a representative value representing characteristics of the positional deviation distribution, determining whether the representative value of the positional deviation is statistically reliable, and updating the offset based on the representative value if the representative value is determined to be statistically reliable.
-
4.发明申请公开(公告)号：US20230138814A1
公开(公告)日：2023-05-04
申请号：US17514201
申请日：2021-10-29
发明人： Jiahua Fan , Ming Yan , Jed Douglas Pack , Priti Madhav , Kentaro Ogata , Ken Arai
摘要： A method includes acquiring a first dataset of projection measurements at a first energy spectrum and a second dataset of projection measurements at a second energy spectrum different from the first energy spectrum by switching between acquiring the first dataset for a set number of consecutive views at different projection angles at the first energy spectrum and acquiring the second dataset for the set number of consecutive views at different projection angles at the second energy spectrum. The set number of consecutive views is greater than one. The method includes supplementing both the first dataset with estimated projection measurements at the first energy spectrum and the second dataset with estimated projection measurements at the second energy spectrum to provide missing projection measurements at different projection angles not acquired during the imaging scan for the first dataset and the second dataset.
-
-
-
搜索结果
4 条记录 (耗时 0.013 秒)
