Automatic detection of fiducial markers in fluoroscopy images for on-line calibration

被引：6

作者：

Smith, L ^{[1
]}

Pleasance, M ^{[1
]}

Seeton, R ^{[1
]}

Archip, N ^{[1
]}

Rohling, R ^{[1
]}

机构：

[1] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada

来源：

MEDICAL PHYSICS | 2005年 / 32卷 / 06期

关键词：

fiducial markers; C-arm fluoroscopy; calibration;

D O I：

10.1118/1.1914547

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Calibrated C-arm fluoroscopy is used for a variety of medical procedures where objects and anatomical structures need to be located in space. Calibration is often based on imaging a grid of fiducial markers and using the C-arm image's geometrical measurements (radius and center) together with the positions of the markers. An on-line technique is developed to automatically locate the fiducial markers and validated on 97 images. The success rate of the detection algorithm is 96.28% with an average error of 0.46 mm and a standard deviation of 0.32 mm. (c) 2005 American Association of Physicists in Medicine.

引用

页码：1521 / 1523

页数：3

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