Research

Our technology and proof of concept are founded in a series of published clinical studies and peer reviewed papers.

News

Instant Detection of Cerebral Blood Flow Changes in Infants with Congenital Heart Disease during Transcatheter Interventions

Martin Leth-Olsen,Gaute Døhlen,Hans Torp and Siri Ann Nyrnes

Editorial

Original research papers

Instant Detection of Cerebral Blood Flow Changes in Infants with Congenital Heart Disease during Transcatheter Interventions

Martin Leth-Olsen,Gaute Døhlen,Hans Torp and Siri Ann Nyrnes

Editorial

Cerebral blood flow dynamics during cardiac surgery in infants

Martin Leth-Olsen, Gaute Døhlen, Hans Torp and Siri Ann Nyrnes  

Continuous fetal cerebral blood flow monitoring during labor: A feasibility study

Kristin Melheim Strand, Hans Torp, Anne Engtrø Husby, Kjell Å.B. Salvesen, Siri Ann Nyrnes, Early Human Development, Volume 182, 2023.

Continuous monitoring of cerebral blood flow during general anaesthesia in infants

Sigrid D. Vik, Hans Torp, Anders H. Jarmund, Gabriel Kiss, Turid Follestad, Ragnhild Støen, Siri Ann Nyrnes. Doi: 10.1016/j.bjao.2023.100144 BJA Open, 6 (C): 100144 (2023) Received: 3 February 2023; Accepted: 22 April 2023 Editorial Read full article

Editorial

Low frequency cerebral arterial and venous flow oscillations in healthy neonates measured by NeoDoppler

Ødegård SS, Torp H, Follestad T, Leth-Olsen M, Støen R, Nyrnes SA. Front. Pediatr. 2022 Nov. doi: 10.3389/fped.2022.929117.

Detection of Cerebral High-Intensity Transient Signals by NeoDoppler during Cardiac Catheterization and Cardiac Surgery in Infants

Leth-Olsen M, Døhlen G, Torp H, Nyrnes SA. Ultrasound Med Biol. 2022 Jul;48(7):1256-1267.

Effects of tilt on cerebral hemodynamics measured by NeoDoppler in healthy neonates

Jarmund AH, Ødegård SS, Torp H, Nyrnes SA. Pediatr Res. 2021 Oct;90(4):888-895.

NeoDoppler: New ultrasound technology for continuous cerebral circulation monitoring in neonates

Vik SD, Torp H, Follestad T, Støen R, Nyrnes SA. Pediatr Res. 2020 Jan;87(1):95-103. doi: 10.1038/s41390-019-0535-0. Epub 2019 Aug 12.

Review articles

A Scoping Review of Cerebral Doppler Arterial Waveforms in Infants

Jarmund AH, Pedersen SA, Torp H, Dudink J, Nyrnes SA. Ultrasound Med Biol. 2023 Apr;49(4):919-936. doi: 10.1016/j.ultrasmedbio.2022.12.007. Epub 2023 Jan 31.

Conference presentations/abstracts

Dynamic Autoregulation in Infants Undergoing Cardiac Surgery

Leth-Olsen, M; Døhlen, G; Torp, H; Nyrnes, SA.

Cerebral Blood Flow Monitoring for Instant Display of Circulatory Events During Cardiac Surgery

Klcovansky, J; Torp, H; Nyrnes, SA.

NeoDoppler monitoring of cerebral blood flow during general anesthesia in infants

S. D. Vik, H. Torp, R. Støen and S.A. Nyrnes. Poster presentation.

Low frequency cerebral arterial and venous flow oscillations in healthy neonates measured by NeoDoppler

S.S. Ødegård, H. Torp, T. Follestad, M. Leth-Olsen, R. Støen, S.A. Nyrnes. Poster presentation.

NeoDoppler–Continuous cerebral blood flow monitoring during cardiac surgery and interventions in children with congenital heart disease

M. Leth-Olsen, G. Døhlen, G. Grindheim, H. Torp, S.A. Nyrnes. Poster and published abstract

Monitoring of cerebral high intensity transient signals during catheter interventions and surgery for congenital heart disease in infants using NeoDoppler

M. Leth-Olsen, G. Døhlen, H. Torp, S.A. Nyrnes. Poster presentation and published abstract. 

RescueDoppler

Real-time feedback on chest compression efficacy by hands-free carotid Doppler in a porcine model

Bjørn O. Faldaas, Erik W. Nielsen, Benjamin S. Storm, Knut T. Lappegård, Bent A. Nilsen, Gabriel Kiss, Eirik Skogvoll, Hans Torp, Charlotte Ingul. Resuscitation Plus, Volume 18, June 2024, 100583

Real Time Feedback of Chest Compressions by Hands-Free Carotid Doppler in a Porcine Model

Bjørn Faldaas, Erik Nielsen, Benjamin S Storm, Knut Tore Lappegård, Ole-jakob How, Bent Aksel Nilsen, Gabriel Kiss, Eirik Skogvoll, Hans Torp and Charlotte B Ingul

Hands-free continuous carotid Doppler ultrasound for detection of the pulse during cardiac arrest in a porcine model

Bjørn O. Faldaas, Erik W. Nielsen, Benjamin S. Storm, Knut T. Lappegård, Ole J. How, Bent A. Nilsen, Gabriel Kiss, Eirik Skogvoll, Hans Torp, Charlotte Ingul. Resuscitation Plus, Volume 15, September 2023, 100412

RescueDoppler: Non-invasive Handsfree Carotid Doppler Ultrasound For Continuous Hemodynamic-guided Resuscitation

B.O. Faldaas, E.W. Nielsen, B.S Storm, K.T Lappegård, O.J. How, B.A. Nilsen, E. Skogvoll, H. Torp, C. B. Ingul.