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An Observation Model for Motion Correction in Nuclear Medicine

Alnowami, MR, Lewis, E, Guy, M, Wells, K, Dawant, BM and Haynor, DR (2010) An Observation Model for Motion Correction in Nuclear Medicine In: Conference on Medical Imaging 2010 - Image Processing, 2010-02-14 - 2010-02-16, San Diego, CA.

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This paper describes a method of using a tracking system to track the upper part of the anterior surface during scanning for developing patient-specific models of respiration. In the experimental analysis, the natural variation in the anterior surface during breathing will be modeled to reveal the dominant pattern in the breathing cycle. The main target is to produce a patient-specific set of parameters that describes the configuration of the anterior surface for all respiration phases. These data then will be linked to internal organ motion to identify the effect of the morphology of each on motion using particle filter to account for previously unseen patterns of motion. In this initial study, a set of volunteers were imaged using the Codamotion infrared marker-based system. In the marker-based system, the temporal variation of the respiratory motion was studied. This showed that for the 12 volunteer cohort, the mean displacement of the thorax surface TS (abdomen surface AS) region is 10.7±5.6 mm (16.0±9.5mm). Finally, PCA was shown to capture the redundancy in the data set with the first principal component (PC) accounting for more than 96% of the overall variance in both AS and TS datasets. A fitting to the dominant modes of variation using a simple piecewise sinusoid has suggested a maximum error of about 1.1mm across the complete cohort dataset.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Electronic Engineering
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Alnowami, MR
Lewis, E
Guy, M
Wells, K
Dawant, BM
Haynor, DR
Date : 1 January 2010
DOI : 10.1117/12.844376
Contributors :
Uncontrolled Keywords : Science & Technology, Physical Sciences, Life Sciences & Biomedicine, Optics, Radiology, Nuclear Medicine & Medical Imaging, Respiratory motion correction, PCA, Patient-specific models, CHEST-WALL MOTION, EMISSION TOMOGRAPHY, RESPIRATORY MOTION, PATIENT MOTION, QUANTITATION, ACQUISITION, TRACKING, SPECT, PET
Related URLs :
Additional Information : © (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Depositing User : Symplectic Elements
Date Deposited : 18 Mar 2016 17:32
Last Modified : 31 Oct 2017 16:30

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