Presentation is loading. Please wait.

Presentation is loading. Please wait.

Carotid plaque morphometric assessment with three-dimensional ultrasound imaging  Khalid AlMuhanna, MS, Md Murad Hossain, MS, Limin Zhao, MBBS, Jonathan.

Published byJean-Pierre Cormier Modified over 6 years ago

Similar presentations

Presentation on theme: "Carotid plaque morphometric assessment with three-dimensional ultrasound imaging  Khalid AlMuhanna, MS, Md Murad Hossain, MS, Limin Zhao, MBBS, Jonathan."— Presentation transcript:

1 Carotid plaque morphometric assessment with three-dimensional ultrasound imaging 
Khalid AlMuhanna, MS, Md Murad Hossain, MS, Limin Zhao, MBBS, Jonathan Fischell, BS, Gregory Kowalewski, MS, Moira Dux, PhD, Siddhartha Sikdar, PhD, Brajesh K. Lal, MD  Journal of Vascular Surgery  Volume 61, Issue 3, Pages (March 2015) DOI: /j.jvs Copyright © 2015 Society for Vascular Surgery Terms and Conditions

2 Fig 1 Duplex ultrasound (US) imaging for plaque morphometry. A, Standard Doppler measurements to localize the plaque and measure peak systolic and end-diastolic velocities to estimate the percentage of stenosis. B, Best longitudinal view as determined by the sonographer. The luminal (red line) and adventitial (yellow line) boundaries were outlined to obtain the plaque area in the longitudinal section and the least luminal diameter (LLD). C, Cross-sectional image at the region with tightest stenosis, with the luminal and adventitial boundaries outlined to measure the plaque cross-sectional area. D, The 4DL14-5/38 US transducer (Ultrasonix, Richmond, BC, Canada) used for volume acquisition. E, Different slices of the acquired three-dimensional (3D) volume. F, Reconstructed volume generated after segmentation of the vessel wall volume (VWV). Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

3 Fig 2 Quantification of shape variations between and within observers. Dice similarity coefficient (DSC), defined as the percentage of overlapping area between outlines produced by two observers (highlighted in green) divided by the average area between the two contours. Modified Hausdorff distance (MHD), is the mean distance between corresponding points of two contours produced by two different observers (black dashed lines). Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

4 Fig 3 Variations in least luminal diameter (LLD) measurement depend on the angle of insonation of the transducer. A, B-mode cross-sectional view of the region of tightest stenosis. The yellow solid lines indicate different angles of insonation. The corresponding longitudinal sectional images acquired along the respective insonation angles are shown for (B) anterior-posterior (AP), (C) right anterior oblique (RAO), and (D) left anterior oblique (LAO). In this example, the luminal diameter was (B) 4.9 mm when viewed in the AP projection, (C) 6.6 mm in RAO projection, and (D) 4.6 mm in the LAO projection. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

5 Fig 4 Reliability of the longitudinal plaque area measurement obtained from a standard clinical B-mode image. A, Multiobserver Bland-Altman plot for interobserver variability in vessel wall area (VWA), with each color representing an observer (O). B, Bland-Altman plot for intraobserver variability, with each square representing the difference between two measurements made by the same observer. The black solid lines are 1.96 × the standard deviation. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

6 Fig 5 Reliability of plaque volume measurement with the three-dimensional (3D) transducer. A, Multiobserver Bland-Altman plot for interobserver variability, with each color representing an observer (O). B, Bland-Altman plot for intraobserver variability, with each square representing the difference between two measurements made by the same observer. The black solid lines are 1.96 × the standard deviation. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

7 Fig 6 Reliability of shape measurement of plaque volume as evaluated by the Dice similarity coefficient (DSC) and the modified Hausdorff distance (MHD). The box-and-whisker plots include all images from each individual. The central line is the median; the bottom and top edges are the 25th and 75th percentiles, respectively, the whiskers represent the range, and outliers are plotted individually. Interobserver analysis shows the mean overlap between all possible combinations of the three observers (1 vs 2, 1 vs 3, and 2 vs 3) (A) for DSC and for (B) MHD. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

Download ppt "Carotid plaque morphometric assessment with three-dimensional ultrasound imaging  Khalid AlMuhanna, MS, Md Murad Hossain, MS, Limin Zhao, MBBS, Jonathan."

Similar presentations

Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.

Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.
Impact of calcification and intraluminal thrombus on the computed wall stresses of abdominal aortic aneurysm  Zhi-Yong Li, PhD, Jean U-King-Im, MRCS,

Impact of calcification and intraluminal thrombus on the computed wall stresses of abdominal aortic aneurysm  Zhi-Yong Li, PhD, Jean U-King-Im, MRCS,
Duplex ultrasound velocity criteria for the stented carotid artery

Duplex ultrasound velocity criteria for the stented carotid artery
The mechanical role of thrombus on the growth rate of an abdominal aortic aneurysm  Lambert Speelman, MSc, Geert Willem H. Schurink, PhD, MD, E. Marielle.

The mechanical role of thrombus on the growth rate of an abdominal aortic aneurysm  Lambert Speelman, MSc, Geert Willem H. Schurink, PhD, MD, E. Marielle.
Defining the radiation “scatter cloud” in the interventional suite

Defining the radiation “scatter cloud” in the interventional suite
Role of aortic stent graft oversizing and barb characteristics on folding  Kathleen K. Lin, BS, Jarin A. Kratzberg, PhD, Madhavan L. Raghavan, PhD  Journal.

Role of aortic stent graft oversizing and barb characteristics on folding  Kathleen K. Lin, BS, Jarin A. Kratzberg, PhD, Madhavan L. Raghavan, PhD  Journal.
Ultrasound-determined diameter measurements are more accurate than axial computed tomography after endovascular aortic aneurysm repair  Sukgu M. Han,

Ultrasound-determined diameter measurements are more accurate than axial computed tomography after endovascular aortic aneurysm repair  Sukgu M. Han,
Duplex ultrasound velocity criteria for the stented carotid artery

Duplex ultrasound velocity criteria for the stented carotid artery
The anastomosis angle does change the flow fields at vascular end-to-side anastomoses in vivo  Niels-Henrik Staalsen, MD, Michael Ulrich, MS, Jens Winther,

The anastomosis angle does change the flow fields at vascular end-to-side anastomoses in vivo  Niels-Henrik Staalsen, MD, Michael Ulrich, MS, Jens Winther,
Jasper W. van Keulen, MD, Frans L. Moll, MD, PhD, Jip L

Jasper W. van Keulen, MD, Frans L. Moll, MD, PhD, Jip L
Elaine Y. L. Lui, MSc, Aaron H. Steinman, PhD, Richard S. C

Elaine Y. L. Lui, MSc, Aaron H. Steinman, PhD, Richard S. C
Considerations in measuring cartilage thickness using MRI: factors influencing reproducibility and accuracy  S. Koo, M.S., G.E. Gold, M.D., T.P. Andriacchi,

Considerations in measuring cartilage thickness using MRI: factors influencing reproducibility and accuracy  S. Koo, M.S., G.E. Gold, M.D., T.P. Andriacchi,
Intraluminal abdominal aortic aneurysm thrombus is associated with disruption of wall integrity  Dave Koole, MD, Herman J.A. Zandvoort, MD, Arjan Schoneveld,

Intraluminal abdominal aortic aneurysm thrombus is associated with disruption of wall integrity  Dave Koole, MD, Herman J.A. Zandvoort, MD, Arjan Schoneveld,
Multidimensional growth measurements of abdominal aortic aneurysms

Multidimensional growth measurements of abdominal aortic aneurysms
Brajesh K. Lal, MD, Kirk W. Beach, PhD, MD, David S. Sumner, MD 

Brajesh K. Lal, MD, Kirk W. Beach, PhD, MD, David S. Sumner, MD 
Measurement of abdominal aortic aneurysms with three-dimensional ultrasound imaging: Preliminary report  Daniel F. Leotta, PhD, Marla Paun, BS, Kirk W.

Measurement of abdominal aortic aneurysms with three-dimensional ultrasound imaging: Preliminary report  Daniel F. Leotta, PhD, Marla Paun, BS, Kirk W.
A new imaging method for assessment of aortic dissection using four-dimensional phase contrast magnetic resonance imaging  Rachel E. Clough, MBBS, BSc,

A new imaging method for assessment of aortic dissection using four-dimensional phase contrast magnetic resonance imaging  Rachel E. Clough, MBBS, BSc,
Skills training after night shift work enables acquisition of endovascular technical skills on a virtual reality simulator  Peter A. Naughton, MD, Rajesh.

Skills training after night shift work enables acquisition of endovascular technical skills on a virtual reality simulator  Peter A. Naughton, MD, Rajesh.
Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.

Feasibility of wall stress analysis of abdominal aortic aneurysms using three- dimensional ultrasound  Annette M. Kok, MSc, V. Lai Nguyen, MD, Lambert.
Remodeling leads to distinctly more intimal hyperplasia in coronary than in infrainguinal vein grafts  Peter Zilla, MD, PhD, Loven Moodley, MBBS, FCS,

Remodeling leads to distinctly more intimal hyperplasia in coronary than in infrainguinal vein grafts  Peter Zilla, MD, PhD, Loven Moodley, MBBS, FCS,

Similar presentations

Ads by Google