Research

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

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

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.

Ultralyd kan hindre hjerneskade hos syke nyfødte og premature

From gemini.no, published 12.09.2023. Only available in norwegian.

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

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

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

Vik SD, Torp H, Follestad T, Støen R, Nyrnes SA. NeoDoppler: New ultrasound technology for continous cerebral circulation monitoring in neonates. Pediatr Res. 2020 Jan;87(1):95-103. doi: 10.1038/s41390-019-0535-0. Epub 2019 Aug 12.

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

Jarmund AH, Ødegård SS, Torp H, Nyrnes SA. Effects of tilt on cerebral hemodynamics measured by NeoDoppler in healthy neonates. Pediatr Res. 2021 Oct;90(4):888-895.

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. Detection of Cerebral High-Intensity Transient Signals by NeoDoppler during Cardiac Catheterization and Cardiac Surgery in Infants. Ultrasound Med Biol. 2022 Jul;48(7):1256-1267.

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. Low frequency cerebral arterial and venous flow oscillations in healthy neonates measured by NeoDoppler. Front. Pediatr. 2022 Nov. doi: 10.3389/fped.2022.929117.

A Scoping Review of Cerebral Doppler Arterial Waveforms in Infants

Jarmund AH, Pedersen SA, Torp H, Dudink J, Nyrnes SA. A Scoping Review of Cerebral Doppler Arterial Waveforms in Infants. Ultrasound Med Biol. 2023 Apr;49(4):919-936. doi: 10.1016/j.ultrasmedbio.2022.12.007. Epub 2023 Jan 31.

Abstracts

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 EACVI Best In Imaging. 

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

 S. S. Ødegård, H. Torp, T. Follestad, M. Leth-Olsen, R. Støen, S.A. Nyrnes. Low frequency oscillations PAS

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

M. Leth-Olsen, G. Døhlen, Guro Grindheim, H. Torp, S.A. Nyrnes. NeoDoppler – Continuous cerebral blood flow monitoring – MLO

NeoDoppler monitoring of cerebral blood flow during general anesthesia in infants

Sigrid D. Vik, Hans Torp, Dr. Tech, Prof1, Ragnhild Støen, MD, PhD, Prof, and Siri Ann Nyrnes MD, PhD