Optimization of phase processing for magnetic resonance venography

Phillip Ward, Parnesh Raniga, Amanda C. L. Ng, David L. Dowe, Gary F. Egan, David Graeme Barnes

Research output: Contribution to conferencePosterOther

Abstract

Purpose: To improve the performance of magnetic resonance imaging (MRI) based venous vessel segmentation algorithms by examining the impact of different imaging parameters, reconstruction techniques and post-processing techniques.

Background: The deoxygenated haemoglobin in venous blood has a distinct magnetic susceptibility, which manifests in the phase of MRI data. The phase-contrast is sensitive to sequence parameters and reconstruction. Post-processing techniques are used to enhance the contrast prior to segmenting the vasculature.

Method: Each combination of MRI sequence, reconstruction technique, and post-processing algorithm was investigated. Sequences included single echo and dual echo. Reconstruction techniques included GRAPPA1 and CSense2 . Post-processing techniques included high-pass filtering, rod-like filters3 , susceptibility-weighted imaging4 and vesselness filters5 . Each unique combination of sequence, reconstruction technique and post-processing technique (a pipeline) was tuned (reconstruction and post-processing parameters) to optimise performance and the resultant image displayed as a minimum intensity projection (mIP). The performance of each pipeline, for a small set of vessels with different orientations and diameters, was visually assessed and compared objectively using the signal-to-noise ratio in the mIP visualisation.

Results: The selection of pipeline components had a strong effect upon vessel appearance. Vessel visibility was dependent on vessel size, orientation and location in addition to being sensitive to pipeline components. No strong relationship between number of tuneable parameters and vessel contrast was found. Dual echo sequences consistently outperformed single echo sequences. Conclusion: This investigation provided a guide for component selection when imaging cerebro-vasculature and suggested optimal contrast was dependent upon the size, orientation and location of the target vessels.
Original languageEnglish
Publication statusPublished - 2013
Event5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance - Brisbane, Australia
Duration: 27 Oct 201330 Nov 2017

Conference

Conference5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance
Abbreviated titleAPNMR5 and ANZMAG
CountryAustralia
CityBrisbane
Period27/10/1330/11/17

Cite this

Ward, P., Raniga, P., Ng, A. C. L., Dowe, D. L., Egan, G. F., & Barnes, D. G. (2013). Optimization of phase processing for magnetic resonance venography. Poster session presented at 5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance, Brisbane, Australia.
Ward, Phillip ; Raniga, Parnesh ; Ng, Amanda C. L. ; Dowe, David L. ; Egan, Gary F. ; Barnes, David Graeme. / Optimization of phase processing for magnetic resonance venography. Poster session presented at 5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance, Brisbane, Australia.
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title = "Optimization of phase processing for magnetic resonance venography",
abstract = "Purpose: To improve the performance of magnetic resonance imaging (MRI) based venous vessel segmentation algorithms by examining the impact of different imaging parameters, reconstruction techniques and post-processing techniques.Background: The deoxygenated haemoglobin in venous blood has a distinct magnetic susceptibility, which manifests in the phase of MRI data. The phase-contrast is sensitive to sequence parameters and reconstruction. Post-processing techniques are used to enhance the contrast prior to segmenting the vasculature. Method: Each combination of MRI sequence, reconstruction technique, and post-processing algorithm was investigated. Sequences included single echo and dual echo. Reconstruction techniques included GRAPPA1 and CSense2 . Post-processing techniques included high-pass filtering, rod-like filters3 , susceptibility-weighted imaging4 and vesselness filters5 . Each unique combination of sequence, reconstruction technique and post-processing technique (a pipeline) was tuned (reconstruction and post-processing parameters) to optimise performance and the resultant image displayed as a minimum intensity projection (mIP). The performance of each pipeline, for a small set of vessels with different orientations and diameters, was visually assessed and compared objectively using the signal-to-noise ratio in the mIP visualisation. Results: The selection of pipeline components had a strong effect upon vessel appearance. Vessel visibility was dependent on vessel size, orientation and location in addition to being sensitive to pipeline components. No strong relationship between number of tuneable parameters and vessel contrast was found. Dual echo sequences consistently outperformed single echo sequences. Conclusion: This investigation provided a guide for component selection when imaging cerebro-vasculature and suggested optimal contrast was dependent upon the size, orientation and location of the target vessels.",
author = "Phillip Ward and Parnesh Raniga and Ng, {Amanda C. L.} and Dowe, {David L.} and Egan, {Gary F.} and Barnes, {David Graeme}",
year = "2013",
language = "English",
note = "5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance, APNMR5 and ANZMAG ; Conference date: 27-10-2013 Through 30-11-2017",

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Ward, P, Raniga, P, Ng, ACL, Dowe, DL, Egan, GF & Barnes, DG 2013, 'Optimization of phase processing for magnetic resonance venography' 5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance, Brisbane, Australia, 27/10/13 - 30/11/17, .

Optimization of phase processing for magnetic resonance venography. / Ward, Phillip; Raniga, Parnesh; Ng, Amanda C. L.; Dowe, David L.; Egan, Gary F.; Barnes, David Graeme.

2013. Poster session presented at 5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance, Brisbane, Australia.

Research output: Contribution to conferencePosterOther

TY - CONF

T1 - Optimization of phase processing for magnetic resonance venography

AU - Ward, Phillip

AU - Raniga, Parnesh

AU - Ng, Amanda C. L.

AU - Dowe, David L.

AU - Egan, Gary F.

AU - Barnes, David Graeme

PY - 2013

Y1 - 2013

N2 - Purpose: To improve the performance of magnetic resonance imaging (MRI) based venous vessel segmentation algorithms by examining the impact of different imaging parameters, reconstruction techniques and post-processing techniques.Background: The deoxygenated haemoglobin in venous blood has a distinct magnetic susceptibility, which manifests in the phase of MRI data. The phase-contrast is sensitive to sequence parameters and reconstruction. Post-processing techniques are used to enhance the contrast prior to segmenting the vasculature. Method: Each combination of MRI sequence, reconstruction technique, and post-processing algorithm was investigated. Sequences included single echo and dual echo. Reconstruction techniques included GRAPPA1 and CSense2 . Post-processing techniques included high-pass filtering, rod-like filters3 , susceptibility-weighted imaging4 and vesselness filters5 . Each unique combination of sequence, reconstruction technique and post-processing technique (a pipeline) was tuned (reconstruction and post-processing parameters) to optimise performance and the resultant image displayed as a minimum intensity projection (mIP). The performance of each pipeline, for a small set of vessels with different orientations and diameters, was visually assessed and compared objectively using the signal-to-noise ratio in the mIP visualisation. Results: The selection of pipeline components had a strong effect upon vessel appearance. Vessel visibility was dependent on vessel size, orientation and location in addition to being sensitive to pipeline components. No strong relationship between number of tuneable parameters and vessel contrast was found. Dual echo sequences consistently outperformed single echo sequences. Conclusion: This investigation provided a guide for component selection when imaging cerebro-vasculature and suggested optimal contrast was dependent upon the size, orientation and location of the target vessels.

AB - Purpose: To improve the performance of magnetic resonance imaging (MRI) based venous vessel segmentation algorithms by examining the impact of different imaging parameters, reconstruction techniques and post-processing techniques.Background: The deoxygenated haemoglobin in venous blood has a distinct magnetic susceptibility, which manifests in the phase of MRI data. The phase-contrast is sensitive to sequence parameters and reconstruction. Post-processing techniques are used to enhance the contrast prior to segmenting the vasculature. Method: Each combination of MRI sequence, reconstruction technique, and post-processing algorithm was investigated. Sequences included single echo and dual echo. Reconstruction techniques included GRAPPA1 and CSense2 . Post-processing techniques included high-pass filtering, rod-like filters3 , susceptibility-weighted imaging4 and vesselness filters5 . Each unique combination of sequence, reconstruction technique and post-processing technique (a pipeline) was tuned (reconstruction and post-processing parameters) to optimise performance and the resultant image displayed as a minimum intensity projection (mIP). The performance of each pipeline, for a small set of vessels with different orientations and diameters, was visually assessed and compared objectively using the signal-to-noise ratio in the mIP visualisation. Results: The selection of pipeline components had a strong effect upon vessel appearance. Vessel visibility was dependent on vessel size, orientation and location in addition to being sensitive to pipeline components. No strong relationship between number of tuneable parameters and vessel contrast was found. Dual echo sequences consistently outperformed single echo sequences. Conclusion: This investigation provided a guide for component selection when imaging cerebro-vasculature and suggested optimal contrast was dependent upon the size, orientation and location of the target vessels.

M3 - Poster

ER -

Ward P, Raniga P, Ng ACL, Dowe DL, Egan GF, Barnes DG. Optimization of phase processing for magnetic resonance venography. 2013. Poster session presented at 5th Asia-Pacific NMR Symposium and 9th biennial meeting of the Australian & New Zealand Society for Magnetic Resonance, Brisbane, Australia.