US 11,896,850 B2
Online angle selection in rotational imaging and tracking systems
Petr Jordan, Redwood City, CA (US); Andriy Myronenko, San Mateo, CA (US); Calvin Maurer, San Jose, CA (US); Eric Schnarr, McFarland, WI (US); and Rob O'Connell, Madison, WI (US)
Assigned to Accuray Incorporated, Sunnyvale, CA (US)
Filed by Accuray Incorporated, Sunnyvale, CA (US)
Filed on Apr. 14, 2022, as Appl. No. 17/721,216.
Application 16/427,719 is a division of application No. 15/250,582, filed on Aug. 29, 2016, granted, now 10,342,996, issued on Jul. 9, 2019.
Application 17/721,216 is a continuation of application No. 17/069,045, filed on Oct. 13, 2020, granted, now 11,331,518.
Application 17/069,045 is a continuation of application No. 16/595,194, filed on Oct. 7, 2019, granted, now 10,806,948, issued on Oct. 20, 2020.
Application 16/595,194 is a continuation of application No. 16/427,719, filed on May 31, 2019, granted, now 10,456,599, issued on Oct. 29, 2019.
Prior Publication US 2022/0241610 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 5/10 (2006.01); A61B 6/00 (2006.01)
CPC A61N 5/107 (2013.01) [A61B 6/4014 (2013.01); A61N 5/103 (2013.01); A61N 5/1037 (2013.01); A61N 5/1039 (2013.01); A61N 5/1049 (2013.01); A61N 5/1081 (2013.01); A61N 5/1083 (2013.01); A61N 2005/1061 (2013.01); A61N 2005/1062 (2013.01); A61N 2005/1074 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of operating a radiation apparatus, the method comprising:
selecting at least a first angle and a second angle from a set of angles for a first rotation of a gantry of a radiation apparatus, wherein the first angle is selected from the set of angles based on having a tracking quality metric value satisfying a tracking quality metric criterion, wherein the tracking quality metric value includes a numerical value representing a confidence that a target is trackable based on images generated at the first angle, and wherein the tracking quality metric criterion includes a numerical threshold;
generating, using an imaging device mounted to the gantry, a first tracking image of the target from the first angle during the first rotation of the gantry; and
generating, using the imaging device, a second tracking image of the target from the second angle during the first rotation of the gantry.
 
13. A method of operating a radiation apparatus, the method comprising:
selecting at least a first angle from a set of angles for a first rotation of a gantry of a radiation apparatus, wherein the first angle is selected from the set of angles based on having a tracking quality metric value satisfying a tracking quality metric criterion, wherein the tracking quality metric value includes a numerical value representing a confidence that a target is trackable based on images generated at the first angle, and wherein the tracking quality metric criterion includes a numerical threshold;
generating, using an imaging device mounted to the gantry, a first tracking image of the target from the first angle during the first rotation of the gantry; and
performing target tracking based on the first tracking image.