Motion Tracking for Medical Imaging: A Non-Visible Structured Light Tracking Approach

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Motion Tracking for Medical Imaging: A Non-Visible Structured Light Tracking Approach. / Olesen, Oline Vinter; Paulsen, Rasmus Reinhold; Højgaard, Liselotte; Roed, Bjarne; Larsen, Rasmus.

In: I E E E Transactions on Medical Imaging, Vol. 31, No. 1, 2012, p. 79-87.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Bibtex

@article{131733fab9b3489d8d45d97d9f7eb517,
title = "Motion Tracking for Medical Imaging: A Non-Visible Structured Light Tracking Approach",
keywords = "Structured light system, Positron emission tomography, Stereo vision, Stereo image processing, Motion estimation",
publisher = "I E E E",
author = "Olesen, {Oline Vinter} and Paulsen, {Rasmus Reinhold} and Liselotte Højgaard and Bjarne Roed and Rasmus Larsen",
year = "2012",
doi = "10.1109/TMI.2011.2165157",
volume = "31",
number = "1",
pages = "79--87",
journal = "I E E E Transactions on Medical Imaging",
issn = "0278-0062",

}

RIS

TY - JOUR

T1 - Motion Tracking for Medical Imaging: A Non-Visible Structured Light Tracking Approach

A1 - Olesen,Oline Vinter

A1 - Paulsen,Rasmus Reinhold

A1 - Højgaard,Liselotte

A1 - Roed,Bjarne

A1 - Larsen,Rasmus

AU - Olesen,Oline Vinter

AU - Paulsen,Rasmus Reinhold

AU - Højgaard,Liselotte

AU - Roed,Bjarne

AU - Larsen,Rasmus

PB - I E E E

PY - 2012

Y1 - 2012

N2 - We present a system for head motion tracking in 3D brain imaging. The system is based on facial surface reconstruction and tracking using a structured light (SL) scanning principle. The system is designed to fit into narrow 3D medical scanner geometries limiting the field of view. It is tested in a clinical setting on the high resolution research tomograph (HRRT), Siemens PET scanner with a head phantom and volunteers. The SL system is compared to a commercial optical tracking system, the Polaris Vicra system, from NDI based on translatory and rotary ground truth motions of the head phantom. The accuracy of the systems was similar, with root-mean-square (RMS) errors of 0.09 ◦ for 20 ◦ axial rotations, and RMS errors of 0.24 mm for 25 mm translations. Tests were made using 1) a light emitting diode (LED) based miniaturized video projector, the Pico projector from Texas Instruments, and 2) a customized version of this projector replacing a visible light LED with a 850 nm near infrared LED. The latter system does not provide additional discomfort by visible light projection into the patient’s eyes. The main advantage over existing head motion tracking devices, including the Polaris Vicra system, is that it is not necessary to place markers on the patient. This provides a simpler workflow and eliminates uncertainties related to marker attachment and stability. We show proof of concept of a marker less tracking system especially designed for clinical use with promising results.

AB - We present a system for head motion tracking in 3D brain imaging. The system is based on facial surface reconstruction and tracking using a structured light (SL) scanning principle. The system is designed to fit into narrow 3D medical scanner geometries limiting the field of view. It is tested in a clinical setting on the high resolution research tomograph (HRRT), Siemens PET scanner with a head phantom and volunteers. The SL system is compared to a commercial optical tracking system, the Polaris Vicra system, from NDI based on translatory and rotary ground truth motions of the head phantom. The accuracy of the systems was similar, with root-mean-square (RMS) errors of 0.09 ◦ for 20 ◦ axial rotations, and RMS errors of 0.24 mm for 25 mm translations. Tests were made using 1) a light emitting diode (LED) based miniaturized video projector, the Pico projector from Texas Instruments, and 2) a customized version of this projector replacing a visible light LED with a 850 nm near infrared LED. The latter system does not provide additional discomfort by visible light projection into the patient’s eyes. The main advantage over existing head motion tracking devices, including the Polaris Vicra system, is that it is not necessary to place markers on the patient. This provides a simpler workflow and eliminates uncertainties related to marker attachment and stability. We show proof of concept of a marker less tracking system especially designed for clinical use with promising results.

KW - Structured light system

KW - Positron emission tomography

KW - Stereo vision

KW - Stereo image processing

KW - Motion estimation

U2 - 10.1109/TMI.2011.2165157

DO - 10.1109/TMI.2011.2165157

JO - I E E E Transactions on Medical Imaging

JF - I E E E Transactions on Medical Imaging

SN - 0278-0062

IS - 1

VL - 31

SP - 79

EP - 87

ER -