Vascular | Flow foundations
Tracks
Room 7 | Virtual
Vascular
| Friday, May 29, 2026 |
| 12:30 PM - 1:20 PM |
| Rm 7 | First Floor |
Speaker
Mr Nathan Gallagher
Vascular Sonographer
The Cardiovascular Centre
Haemodynamic principles
12:30 PM - 12:50 PMBiography
Mr Nathan Gallagher |
The Cardiovascular Centre
Nathan is a vascular sonographer with a background in radiography, practising in Newcastle, NSW. His professional interests include the standardisation of vascular ultrasound methods and advancing disease understanding and optimal scanning techniques.
Mrs Melissa Borg
Senior Sonographer
Southern Cross Vascular Ultrasound
From anatomy to haemodynamics: V flow imaging in type B aortic dissection
12:50 PM - 1:00 PMPresentation Synopsis / Abstract
Introduction: Type B aortic dissection (TBAD) requires rapid and comprehensive vascular assessment to inform management and risk stratification. While conventional ultrasound delivers anatomical detail and Doppler-based haemodynamic insight, its limitations in resolving multidirectional flow and shear forces restrict clinical decision-making. Vector Flow (V Flow) imaging presents a major advancement for bedside ultrasound: enabling real-time visualization and quantification of complex flow patterns, velocity ratios, wall shear stress, and volumetric flow in true and false lumens.
Methods: This presentation reviews the utility of V Flow imaging in TBAD, presenting case-based videos and quantitative measurements from the latest Mindray system. V Results: Flow assessments reveal significant differences in systolic and diastolic flow patterns, entry tear hemodynamics, and localized wall shear stress between lumens. Technological strengths and practical limitations such as probe type and patient body habitus are discussed.
Conclusion/Take home message: Attendees will gain insights into how V Flow imaging enhances diagnostic confidence and provides new avenues for hemodynamic monitoring in acute aortic syndromes.
Methods: This presentation reviews the utility of V Flow imaging in TBAD, presenting case-based videos and quantitative measurements from the latest Mindray system. V Results: Flow assessments reveal significant differences in systolic and diastolic flow patterns, entry tear hemodynamics, and localized wall shear stress between lumens. Technological strengths and practical limitations such as probe type and patient body habitus are discussed.
Conclusion/Take home message: Attendees will gain insights into how V Flow imaging enhances diagnostic confidence and provides new avenues for hemodynamic monitoring in acute aortic syndromes.
Biography
Mrs Melissa Borg |
Southern Cross Vascular Ultrasound
Melissa Borg is a vascular and general sonographer at Southern Cross Vascular Ultrasound in Sydney, Australia. She holds a master’s degree in vascular ultrasound and has more than 20 years’ experience in diagnostic imaging across both vascular and general ultrasound practice.
Melissa has a strong interest in advanced haemodynamic assessment of aortic and peripheral vascular disease and in using ultrasound as a first‑line, real‑time diagnostic tool. Her recent work focuses on the clinical application of Mindray’s V Flow technology for Type B aortic dissection, including the development of a structured protocol and comparison with 4D MRI flow imaging.
She is passionate about clear visual communication, continual learning, and integrating advanced imaging techniques into everyday clinical practice.
Mr Sameer Ishak
Vascular Sonographer
Spectrum Interventional Radiology
Endovascular AVF creation: What sonographers need to know **NEW VOICE**
1:00 PM - 1:20 PMPresentation Synopsis / Abstract
Endovascular AVF creation for the purpose of dialysis access is a minimally invasive, catheter based procedure whereby an arteriovenous fistula is created using radiofrequency energy. BD's WavelinQ system situates the AVF in the proximal forearm between the radial artery or ulnar artery and one of their concomitant veins. The creation site is near the perforator vein at the antecubital fossa to encourage the flow into the superficial venous system of the arm which can be cannulated for haemodialysis.
The sonographic challenges of endovascular AVF scanning include the appropriate assessment of patient anatomy as a successful endoAVF is heavily reliant on the perforator vein. Additionally, careful assessment of vessel diameters and depth for access and cannulation is crucial for successful and practical long-term dialysis. Finally, serial sonographic surveillance ensures thrombosis, needling injuries and evidence of failure can be evaluated promptly to provide comprehensive and patient-centred care.
The sonographic challenges of endovascular AVF scanning include the appropriate assessment of patient anatomy as a successful endoAVF is heavily reliant on the perforator vein. Additionally, careful assessment of vessel diameters and depth for access and cannulation is crucial for successful and practical long-term dialysis. Finally, serial sonographic surveillance ensures thrombosis, needling injuries and evidence of failure can be evaluated promptly to provide comprehensive and patient-centred care.
Biography
Mr Sameer Ishak |
Spectrum Interventional Radiology
Recent graduate from Western Sydney University's graduate diploma of vascular sonography. Currently working alongside a team of interventional radiologists at Spectrum radiology. The interventional radiology team have a fascinating and niche use for vascular sonography with regard to their work in endovascular AVF creation for dialysis, genicular artery embolisation and prostatic artery embolisation.
