Interlaboratory comparison of femur surface reconstruction from CT data compared to reference optical 3D scan

Ehsan Soodmand; Daniel Kluess; Patrick A. Varady; Robert Cichon; Michael Schwarze; Dominic Gehweiler; Frank Niemeyer; Dieter Pahr; Matthias Woiczinski

doi:10.1186/s12938-018-0461-0

Interlaboratory comparison of femur surface reconstruction from CT data compared to reference optical 3D scan

Ehsan Soodmand^*, Daniel Kluess, Patrick A. Varady, Robert Cichon, Michael Schwarze, Dominic Gehweiler, Frank Niemeyer, Dieter Pahr, Matthias Woiczinski

^*Corresponding author for this work

Research output: Journal article (peer-reviewed) › Journal article

35 Citations (Scopus)

Abstract

Background: The present study contrasts the accuracy of different reconstructed models with distinctive segmentation methods performed by various experts. Seven research groups reconstructed nine 3D models of one human femur based on an acquired CT image using their own computational methods. As a reference model for accuracy assessment, a 3D surface scan of the human femur was created using an optical measuring system. Prior to comparison, the femur was divided into four areas; "neck and greater trochanter", "proximal metaphysis", "diaphysis", and "distal metaphysis". The deviation analysis was carried out in GEOMAGIC studio v.2013 software. Results: The results revealed that the highest deviation errors occurred in "neck and greater trochanter" area and "proximal metaphysis" area with RMSE of 0.84 and 0.83mm respectively. Conclusion: In conclusion, this study shows that the average deviation of reconstructed models prepared by experts with various methods, skills and software from the surface 3D scan is lower than 0.79 mm, which is not a significant discrepancy.

Original language	English
Article number	29
Journal	BioMedical Engineering Online
Volume	17
Issue number	1
DOIs	https://doi.org/10.1186/s12938-018-0461-0
Publication status	Published - 02 Mar 2018
Externally published	Yes

Keywords

Accuracy assessment
Bone segmentation
Deviation analysis
Image-based model
Medical imaging
Round robin test
Shape reconstruction

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Biomaterials
Biomedical Engineering
Radiology, Nuclear Medicine and Imaging

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10.1186/s12938-018-0461-0

Cite this

@article{480f6db4eeb040539dd800f13675dd77,

title = "Interlaboratory comparison of femur surface reconstruction from CT data compared to reference optical 3D scan",

abstract = "Background: The present study contrasts the accuracy of different reconstructed models with distinctive segmentation methods performed by various experts. Seven research groups reconstructed nine 3D models of one human femur based on an acquired CT image using their own computational methods. As a reference model for accuracy assessment, a 3D surface scan of the human femur was created using an optical measuring system. Prior to comparison, the femur was divided into four areas; {"}neck and greater trochanter{"}, {"}proximal metaphysis{"}, {"}diaphysis{"}, and {"}distal metaphysis{"}. The deviation analysis was carried out in GEOMAGIC studio v.2013 software. Results: The results revealed that the highest deviation errors occurred in {"}neck and greater trochanter{"} area and {"}proximal metaphysis{"} area with RMSE of 0.84 and 0.83mm respectively. Conclusion: In conclusion, this study shows that the average deviation of reconstructed models prepared by experts with various methods, skills and software from the surface 3D scan is lower than 0.79 mm, which is not a significant discrepancy.",

keywords = "Accuracy assessment, Bone segmentation, Deviation analysis, Image-based model, Medical imaging, Round robin test, Shape reconstruction",

author = "Ehsan Soodmand and Daniel Kluess and Varady, {Patrick A.} and Robert Cichon and Michael Schwarze and Dominic Gehweiler and Frank Niemeyer and Dieter Pahr and Matthias Woiczinski",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s).",

year = "2018",

month = mar,

day = "2",

doi = "10.1186/s12938-018-0461-0",

language = "English",

volume = "17",

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T1 - Interlaboratory comparison of femur surface reconstruction from CT data compared to reference optical 3D scan

AU - Soodmand, Ehsan

AU - Kluess, Daniel

AU - Varady, Patrick A.

AU - Cichon, Robert

AU - Schwarze, Michael

AU - Gehweiler, Dominic

AU - Niemeyer, Frank

AU - Pahr, Dieter

AU - Woiczinski, Matthias

PY - 2018/3/2

Y1 - 2018/3/2

N2 - Background: The present study contrasts the accuracy of different reconstructed models with distinctive segmentation methods performed by various experts. Seven research groups reconstructed nine 3D models of one human femur based on an acquired CT image using their own computational methods. As a reference model for accuracy assessment, a 3D surface scan of the human femur was created using an optical measuring system. Prior to comparison, the femur was divided into four areas; "neck and greater trochanter", "proximal metaphysis", "diaphysis", and "distal metaphysis". The deviation analysis was carried out in GEOMAGIC studio v.2013 software. Results: The results revealed that the highest deviation errors occurred in "neck and greater trochanter" area and "proximal metaphysis" area with RMSE of 0.84 and 0.83mm respectively. Conclusion: In conclusion, this study shows that the average deviation of reconstructed models prepared by experts with various methods, skills and software from the surface 3D scan is lower than 0.79 mm, which is not a significant discrepancy.

AB - Background: The present study contrasts the accuracy of different reconstructed models with distinctive segmentation methods performed by various experts. Seven research groups reconstructed nine 3D models of one human femur based on an acquired CT image using their own computational methods. As a reference model for accuracy assessment, a 3D surface scan of the human femur was created using an optical measuring system. Prior to comparison, the femur was divided into four areas; "neck and greater trochanter", "proximal metaphysis", "diaphysis", and "distal metaphysis". The deviation analysis was carried out in GEOMAGIC studio v.2013 software. Results: The results revealed that the highest deviation errors occurred in "neck and greater trochanter" area and "proximal metaphysis" area with RMSE of 0.84 and 0.83mm respectively. Conclusion: In conclusion, this study shows that the average deviation of reconstructed models prepared by experts with various methods, skills and software from the surface 3D scan is lower than 0.79 mm, which is not a significant discrepancy.

KW - Accuracy assessment

KW - Bone segmentation

KW - Deviation analysis

KW - Image-based model

KW - Medical imaging

KW - Round robin test

KW - Shape reconstruction

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DO - 10.1186/s12938-018-0461-0

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SN - 1475-925X

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Interlaboratory comparison of femur surface reconstruction from CT data compared to reference optical 3D scan

Abstract

Keywords

ASJC Scopus subject areas

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