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Respiratory Motion Compensation for 3D Freehand Echocardiography

Atkinson, D; Burcher, M; Declerck, J; Noble, JA; (2001) Respiratory Motion Compensation for 3D Freehand Echocardiography. Ultrasound in Medicine and Biology , 27 (12) 1615 - 1620. 10.1016/S0301-5629(01)00483-5.

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Abstract

Motion of the diaphragm during respiration causes a displacement of the heart relative to the positionof a transthoracic ultrasound (US) probe. These respiration-induced shifts of cardiac position can lead to spatialmisalignments of data when reconstructed in 3-D. We show how to compensate for this motion using a techniquethat extends the tracking of the probe to additionally monitor a marker placed on the patient umbilicus. Themotion of the umbilicus is calibrated to that of the diaphragm using one additional scan. This calibration is usedto correct the 3-D spatial positions of cardiac images acquired from multiple acoustic views. At both systole anddiastole, segmentations of the endocardial border visually appear more consistent after our correction than withno correction. Long and short axis segmentations should intersect on the endocardium. After correction, theirseparation at the closest point is shown to be reduced. Motion of the diaphragm during respiration causes a displacement of the heart relative to the positionof a transthoracic ultrasound (US) probe. These respiration-induced shifts of cardiac position can lead to spatialmisalignments of data when reconstructed in 3-D. We show how to compensate for this motion using a techniquethat extends the tracking of the probe to additionally monitor a marker placed on the patient umbilicus. Themotion of the umbilicus is calibrated to that of the diaphragm using one additional scan. This calibration is usedto correct the 3-D spatial positions of cardiac images acquired from multiple acoustic views. At both systole anddiastole, segmentations of the endocardial border visually appear more consistent after our correction than withno correction. Long and short axis segmentations should intersect on the endocardium. After correction, theirseparation at the closest point is shown to be reduced.

Type:Article
Title:Respiratory Motion Compensation for 3D Freehand Echocardiography
DOI:10.1016/S0301-5629(01)00483-5
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Medicine (Division of)

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