US 11,911,196 B2
Seeing through mucus in an ENT procedure
Andres Claudio Altmann, Haifa (IL); Vadim Gliner, Haifa (IL); and Ram Bernard Mayer, Raanana (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by BIOSENSE WEBSTER (ISRAEL) LTD., Yokneam (IL)
Filed on Apr. 5, 2022, as Appl. No. 17/713,362.
Application 17/713,362 is a division of application No. 16/841,745, filed on Apr. 7, 2020, abandoned.
Application 16/841,745 is a division of application No. 15/407,060, filed on Jan. 16, 2017, granted, now 10,631,798, issued on Apr. 28, 2020.
Prior Publication US 2022/0225951 A1, Jul. 21, 2022
Int. Cl. A61B 6/12 (2006.01); A61B 6/03 (2006.01); A61B 5/06 (2006.01); A61B 6/00 (2006.01); A61B 90/00 (2016.01); G06T 11/00 (2006.01); A61B 34/20 (2016.01)
CPC A61B 6/12 (2013.01) [A61B 5/062 (2013.01); A61B 6/032 (2013.01); A61B 6/461 (2013.01); A61B 6/5205 (2013.01); A61B 6/5252 (2013.01); A61B 6/547 (2013.01); A61B 90/37 (2016.02); G06T 11/006 (2013.01); A61B 2034/2046 (2016.02)] 9 Claims
OG exemplary drawing
 
1. An apparatus for radiographic imaging of a body cavity, comprising:
a guidewire configured for being inserted in the body cavity, the guidewire comprising a position sensor, operating in a tracking system, at a distal end of the guidewire, wherein the body cavity comprises a nasal sinus;
a display screen;
a processor coupled to the position sensor and to the display screen, configured to:
store and display a CT image of the body cavity;
register the tracking system with the CT image;
track a position of the distal end;
display on the display screen the tracked position of the distal end superimposed on the CT image;
assign voxels within a predefined imaging volume relative to the distal end and having a radiodensity less than a predetermined threshold to have a uniform radiodensity of a predefined default value;
incorporate the voxels with the assigned predefined default value into the CT image so as to form an updated CT image; and
display the updated CT image on the display screen.