Validation of a two- to three-dimensional registration algorithm for aligning preoperative CT images and intraoperative fluoroscopy images
We present a validation of an intensity based two- to three-dimensional image registration algorithm. The algorithm can register a CT volume to a single-plane fluoroscopy image. Four routinely acquired clinical data sets from patients who underwent endovascular treatment for an abdominal aortic aneu...
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Veröffentlicht in: | Medical physics (Lancaster) 2001-06, Vol.28 (6), p.1024-1032 |
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description | We present a validation of an intensity based two- to three-dimensional image registration algorithm. The algorithm can register a CT volume to a single-plane fluoroscopy image. Four routinely acquired clinical data sets from patients who underwent endovascular treatment for an abdominal aortic aneurysm were used. Each data set was comprised of two intraoperative fluoroscopy images and a preoperative CT image. Regions of interest (ROI) were drawn around each vertebra in the CT and fluoroscopy images. Each CT image ROI was individually registered to the corresponding ROI in the fluoroscopy images. A cross validation approach was used to obtain a measure of registration consistency. Spinal movement between the preoperative and intraoperative scene was accounted for by using two fluoroscopy images. The consistency and robustness of the algorithm when using two similarity measures, pattern intensity and gradient difference, was investigated. Both similarity measures produced similar results. The consistency values were rotational errors below 0.74° and in-plane translational errors below 0.90 mm. These errors approximately relate to a two-dimensional projection error of 1.3 mm. The failure rate was less than 8.3% for three of the four data sets. However, for one of the data sets a much larger failure rate (28.5%) occurred. |
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The consistency and robustness of the algorithm when using two similarity measures, pattern intensity and gradient difference, was investigated. Both similarity measures produced similar results. The consistency values were rotational errors below 0.74° and in-plane translational errors below 0.90 mm. These errors approximately relate to a two-dimensional projection error of 1.3 mm. The failure rate was less than 8.3% for three of the four data sets. 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G.</creatorcontrib><creatorcontrib>Hawkes, David J.</creatorcontrib><creatorcontrib>Weese, Juergen</creatorcontrib><title>Validation of a two- to three-dimensional registration algorithm for aligning preoperative CT images and intraoperative fluoroscopy images</title><title>Medical physics (Lancaster)</title><addtitle>Med Phys</addtitle><description>We present a validation of an intensity based two- to three-dimensional image registration algorithm. The algorithm can register a CT volume to a single-plane fluoroscopy image. Four routinely acquired clinical data sets from patients who underwent endovascular treatment for an abdominal aortic aneurysm were used. Each data set was comprised of two intraoperative fluoroscopy images and a preoperative CT image. Regions of interest (ROI) were drawn around each vertebra in the CT and fluoroscopy images. Each CT image ROI was individually registered to the corresponding ROI in the fluoroscopy images. A cross validation approach was used to obtain a measure of registration consistency. Spinal movement between the preoperative and intraoperative scene was accounted for by using two fluoroscopy images. The consistency and robustness of the algorithm when using two similarity measures, pattern intensity and gradient difference, was investigated. Both similarity measures produced similar results. The consistency values were rotational errors below 0.74° and in-plane translational errors below 0.90 mm. These errors approximately relate to a two-dimensional projection error of 1.3 mm. The failure rate was less than 8.3% for three of the four data sets. However, for one of the data sets a much larger failure rate (28.5%) occurred.</description><subject>2D–3D image registration</subject><subject>Algorithms</subject><subject>Biophysical Phenomena</subject><subject>Biophysics</subject><subject>Computed radiography</subject><subject>Computed tomography</subject><subject>computerised tomography</subject><subject>diagnostic radiography</subject><subject>Fluoroscopy</subject><subject>Fluoroscopy - statistics & numerical data</subject><subject>Humans</subject><subject>Image analysis</subject><subject>image guided interventions</subject><subject>image registration</subject><subject>medical image processing</subject><subject>Medical imaging</subject><subject>Physicists</subject><subject>Radiographic Image Interpretation, Computer-Assisted</subject><subject>Radiotherapy Planning, Computer-Assisted - statistics & numerical data</subject><subject>similarity measures</subject><subject>surgery</subject><subject>Tomography, X-Ray Computed - statistics & numerical data</subject><issn>0094-2405</issn><issn>2473-4209</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp90MtKxDAUBuAgio6XhS8gWQkK1ZMmbaZLGbyBogt1WzLpSY20TU06yryCT23HFsaNrkI4X_4cfkIOGZwxxqbn7IxxyQXABpnEQvJIxJBtkglAJqJYQLJDdkN4A4CUJ7BNdhgTPBMynpCvF1XZQnXWNdQZqmj36SLaOdq9esSosDU2oR-qinosbej8YFVVOm-715oa5_ubLRvblLT16FpcmQ-ksydqa1VioKopqG36t-uhqRbOu6BduxzVPtkyqgp4MJ575Pnq8ml2E909XN_OLu4iLZIEIiYkyoIDpokUep5JNRWgEgFpgikoxaTShvNCmlTIIkYBCFqrxHCJkPE53yPHQ27r3fsCQ5fXNmisKtWgW4RcQjadsgx6eDJA3S8aPJq89f2qfpkzyFfF5ywfi-_t0Ri6mNdYrOXYdA-iAXzaCpd_J-X3j2Pg6eCDtt1P5__-_if-cP5XeFsY_g3UzKnT</recordid><startdate>200106</startdate><enddate>200106</enddate><creator>Penney, Graeme P.</creator><creator>Batchelor, Philipp G.</creator><creator>Hill, Derek L. 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Regions of interest (ROI) were drawn around each vertebra in the CT and fluoroscopy images. Each CT image ROI was individually registered to the corresponding ROI in the fluoroscopy images. A cross validation approach was used to obtain a measure of registration consistency. Spinal movement between the preoperative and intraoperative scene was accounted for by using two fluoroscopy images. The consistency and robustness of the algorithm when using two similarity measures, pattern intensity and gradient difference, was investigated. Both similarity measures produced similar results. The consistency values were rotational errors below 0.74° and in-plane translational errors below 0.90 mm. These errors approximately relate to a two-dimensional projection error of 1.3 mm. The failure rate was less than 8.3% for three of the four data sets. However, for one of the data sets a much larger failure rate (28.5%) occurred.</abstract><cop>United States</cop><pub>American Association of Physicists in Medicine</pub><pmid>11439472</pmid><doi>10.1118/1.1373400</doi><tpages>9</tpages></addata></record> |
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subjects | 2D–3D image registration Algorithms Biophysical Phenomena Biophysics Computed radiography Computed tomography computerised tomography diagnostic radiography Fluoroscopy Fluoroscopy - statistics & numerical data Humans Image analysis image guided interventions image registration medical image processing Medical imaging Physicists Radiographic Image Interpretation, Computer-Assisted Radiotherapy Planning, Computer-Assisted - statistics & numerical data similarity measures surgery Tomography, X-Ray Computed - statistics & numerical data |
title | Validation of a two- to three-dimensional registration algorithm for aligning preoperative CT images and intraoperative fluoroscopy images |
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