Markerless estimation of patient orientation, posture and pose using range and pressure imaging : for automatic patient setup and scanner initialization in tomographic imaging.

International Journal of Computer Assisted Radiology and Surgery
Robert GrimmGünther Greiner

Abstract

In diagnostic tomographic imaging, patient setup and scanner initialization is a manual, tedious procedure in clinical practice. A fully-automatic detection of the patient's position, orientation, posture and pose on the patient table holds great potential for optimizing this part of the imaging workflow. We propose a markerless framework that is capable of extracting this information within seconds from either range imaging (RI) or pressure imaging (PI) data. The proposed method is composed of three stages: First, the position and orientation of the reclined patient are determined. Second, the patient's posture is classified. Third, based on the estimated orientation and posture, an approximate body pose is recovered by fitting an articulated model to the observed RI/PI data. Being a key issue for clinical application, our approach does not require an initialization pose. In a case study on real data from 16 subjects, the performance of the proposed system was evaluated quantitatively with a 3-D time-of-flight RI camera and a pressure sensing mattress (PI). The patient orientation was successfully determined for all subjects, independent of the modality. At the posture recognition stage, our method achieved mean classification...Continue Reading

References

Mar 17, 2006·Journal of Neuroengineering and Rehabilitation·Lars MündermannThomas P Andriacchi
Mar 16, 2007·Medical Image Computing and Computer-assisted Intervention : MICCAI·Andreas KeilNassir Navab
Nov 5, 2008·Medical Image Computing and Computer-assisted Intervention : MICCAI·Matthias FenchelAndreas Schilling
Jan 1, 2009·Medical Image Computing and Computer-assisted Intervention : MICCAI·Christian SchallerJoachim Hornegger

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Citations

Mar 26, 2013·International Journal of Computer Assisted Radiology and Surgery·Michael MüllerLena Maier-Hein
Dec 16, 2018·International Journal of Computer Assisted Radiology and Surgery·Leslie CasasStefanie Demirci
Jul 3, 2021·International Journal of Environmental Research and Public Health·Francis Joseph CostelloKun Chang Lee

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