Determining 3D Kinematics of the Hip Using Video Fluoroscopy: Guidelines for Balancing Radiation Dose and Registration Accuracy

Autor: Stephan Scheidegger, Christian Sommer, P. Eschle, Stephen J. Ferguson, Fabio D'Isidoro, Thomas Zumbrunn
Rok vydání: 2017
Předmět:
Male
Motion analysis
medicine.medical_specialty
Arthroplasty
Replacement
Hip
Radiography
0206 medical engineering
Video Recording
Image registration
02 engineering and technology
Kinematics
Radiation Dosage
Effective dose (radiation)
030218 nuclear medicine & medical imaging
Motion
615: Pharmakologie und Therapeutik
03 medical and health sciences
0302 clinical medicine
Activities of Daily Living
Humans
video fluoroscopy
hip joint
kinematics
effective dose
image registration
Total hip arthroplasty
Medicine
Dosimetry
Fluoroscopy
Orthopedics and Sports Medicine
Computer vision
Medical physics
Range of Motion
Articular
Monte Carlo simulation
Radiation protection
Effective dose
medicine.diagnostic_test
business.industry
X-Rays
020601 biomedical engineering
Biomechanical Phenomena
Absorbed dose
Female
Artificial intelligence
business
Zdroj: The Journal of Arthroplasty, 32 (10)
ISSN: 0883-5403
DOI: 10.1016/j.arth.2017.05.036
Popis: Background Video fluoroscopy is a technique currently used to retrieve the in vivo three-dimensional kinematics of human joints during activities of daily living. Minimization of the radiation dose absorbed by the subject during the measurement is a priority and has not been thoroughly addressed so far. This issue is critical for the motion analysis of the hip joint, because of the proximity of the gonads. The aims of this study were to determine the x-ray voltage and the irradiation angle that minimize the effective dose and to achieve the best compromise between delivered dose and accuracy in motion retrieval. Methods Effective dose for a fluoroscopic study of the hip was estimated by means of Monte Carlo simulations and dosimetry measurements. Accuracy in pose retrieval for the different viewing angles was evaluated by registration of simulated radiographs of a hip prosthesis during a prescribed virtual motion. Results Absorbed dose can be minimized to about one-sixth of the maximum estimated values by irradiating at the optimal angle of 45° from the posterior side and by operating at 80 kV. At this angle, accuracy in retrieval of internal-external rotation is poorer compared with the other viewing angles. Conclusion The irradiation angle that minimizes the delivered dose does not necessarily correspond to the optimal angle for the accuracy in pose retrieval, for all rotations. For some applications, single-plane fluoroscopy may be a valid lower dose alternative to the dual-plane methods, despite their better accuracy.
The Journal of Arthroplasty, 32 (10)
ISSN:0883-5403
Databáze: OpenAIRE
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