Patent AU-2021100053-A4 (AU)
Title: Method for locating puncture point of lung puncture
Inventor: LUO JIE
IPC: A61B90/00
Filed: 2021-01-06
Granted: 2021-03-25
Abstract: The present invention relates to a method for locating a puncture point of lung 
puncture, including the following steps: performing real-time cross-sectional scanning 
on a patient's body surface to obtain a real-time CT image; finding an image with the 
largest cross-sectional area of a lung mass as a first CT image, and returning a CT 
machine to the position where the first CT image is scanned, emitting a laser beam to 
the position, taking a laser beam on the body surface as a reference line; placing a 
metal locator A at a selected point on the reference line, obtaining an image at which 
the metal locator A is placed as a second CT image; finding a location point B closest 
to the mass on the body surface in the CT image and marking the location point B as 
the target CT image; placing a metal locator B on the reference line, and constantly 
adjusting the position of the metal locator B to obtain the image of the locator B as the 
third CT image; determining whether the position of the locator B in the third CT image 
coincides with the locator point B in the target CT image, if so, a placement position of 
the locator B on the body surface corresponding to the position of the locator B in the 
third CT image is the best puncture point.
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101 
Performing real-time cross-sectional scanning on a patient's body surface 
with a CT machine to obtain a real-time CT image 
Analyzing each CT image, finding the CT image with the largest 102 
cross-sectional area of a lung mass as a first CT image, and returning th 
CT machine to the position where the first CT image is scanned on th, 
body surface, emitting a laser beam to the position where the first C 
image is scanned on the body surface, and taking a laser beam onth 
body surface as a reference line 
[Randomly selecting one point on the reference in-eoftebody surace, and 103 
placing the metal locator A at the randomly selected point, obtaining a C 
image in which the metal locator A is placed and which is taken by the C
machine as a second CT image, and taking the position of the metal locator , 
shown in the second imaqe as the anchor Doint A 
[Finding the location point B with the shortest distance from the mass on 
the body surface in the second CT image, and marking the location point 
B as a target CT image in the second CT image 
-lacing Tne metal locator -S on e-reFerence line or Te boay surface 105 
based on the locating point A and the locating point B marked in the target 
CT image, and constantly adjusting the position of the metal locator B to 
constantly obtain the CT image in which the metal locator B is placed and 
'which is taken by the CT machine a a third CT image 
_________________ 106 
Determining whether the position ofte metal locator B shown in the third 
ZT image coincides with the locating point B in the target CT image, if so, 
a placement position of the metal locator on the body surface 
,orresponding to the position of the metal locator B in the third CT image 
R iq th hoqt puncture pint 
FIG. 1