Cargando…
New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm
To improve the accuracy of calibration of C-arm, and overcome the space limitation in surgery, we proposed a new calibrator for online calibration of C-arm. After the image rectification by a polynomial fitting-based global correction method, the C-arm was assumed as an ideal pinhole model. The rela...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539996/ https://www.ncbi.nlm.nih.gov/pubmed/31035379 http://dx.doi.org/10.3390/s19091989 |
_version_ | 1783422521394069504 |
---|---|
author | Guo, Na Yang, Biao Wang, Yuhan Liu, Hongsheng Hu, Lei Wang, Tianmiao |
author_facet | Guo, Na Yang, Biao Wang, Yuhan Liu, Hongsheng Hu, Lei Wang, Tianmiao |
author_sort | Guo, Na |
collection | PubMed |
description | To improve the accuracy of calibration of C-arm, and overcome the space limitation in surgery, we proposed a new calibrator for online calibration of C-arm. After the image rectification by a polynomial fitting-based global correction method, the C-arm was assumed as an ideal pinhole model. The relationships between two kinds of spatial calibration errors and the distribution of fiducial points were studied: the performance of FRE (Fiducial Registration Error) and TRE (Target Registration Error) were not consistent, but both were best at the 12 marked points; the TRE decreased with the increase of the uniformity of calibration points distribution, and with the decrease of the distance between the target point and the center of calibration points. A calibrator with 12 fiducial points conical helically distributed, which could be placed on the knee, was an attractive option. A total of 10 experiments on C-arm calibration accuracy were conducted and the mean value of mapping error was 0.41 mm. We designed an ACL reconstruction navigation system and carried out specimen experiments on 4 pairs of dry femur and tibia. The mean accuracy of navigation system was 0.85 mm, which is important to the tunnel positioning for ACL reconstruction. |
format | Online Article Text |
id | pubmed-6539996 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-65399962019-06-04 New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm Guo, Na Yang, Biao Wang, Yuhan Liu, Hongsheng Hu, Lei Wang, Tianmiao Sensors (Basel) Article To improve the accuracy of calibration of C-arm, and overcome the space limitation in surgery, we proposed a new calibrator for online calibration of C-arm. After the image rectification by a polynomial fitting-based global correction method, the C-arm was assumed as an ideal pinhole model. The relationships between two kinds of spatial calibration errors and the distribution of fiducial points were studied: the performance of FRE (Fiducial Registration Error) and TRE (Target Registration Error) were not consistent, but both were best at the 12 marked points; the TRE decreased with the increase of the uniformity of calibration points distribution, and with the decrease of the distance between the target point and the center of calibration points. A calibrator with 12 fiducial points conical helically distributed, which could be placed on the knee, was an attractive option. A total of 10 experiments on C-arm calibration accuracy were conducted and the mean value of mapping error was 0.41 mm. We designed an ACL reconstruction navigation system and carried out specimen experiments on 4 pairs of dry femur and tibia. The mean accuracy of navigation system was 0.85 mm, which is important to the tunnel positioning for ACL reconstruction. MDPI 2019-04-28 /pmc/articles/PMC6539996/ /pubmed/31035379 http://dx.doi.org/10.3390/s19091989 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Guo, Na Yang, Biao Wang, Yuhan Liu, Hongsheng Hu, Lei Wang, Tianmiao New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm |
title | New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm |
title_full | New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm |
title_fullStr | New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm |
title_full_unstemmed | New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm |
title_short | New Calibrator with Points Distributed Conical Helically for Online Calibration of C-Arm |
title_sort | new calibrator with points distributed conical helically for online calibration of c-arm |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539996/ https://www.ncbi.nlm.nih.gov/pubmed/31035379 http://dx.doi.org/10.3390/s19091989 |
work_keys_str_mv | AT guona newcalibratorwithpointsdistributedconicalhelicallyforonlinecalibrationofcarm AT yangbiao newcalibratorwithpointsdistributedconicalhelicallyforonlinecalibrationofcarm AT wangyuhan newcalibratorwithpointsdistributedconicalhelicallyforonlinecalibrationofcarm AT liuhongsheng newcalibratorwithpointsdistributedconicalhelicallyforonlinecalibrationofcarm AT hulei newcalibratorwithpointsdistributedconicalhelicallyforonlinecalibrationofcarm AT wangtianmiao newcalibratorwithpointsdistributedconicalhelicallyforonlinecalibrationofcarm |