Browsing Institutt for sirkulasjon og bildediagnostikk by Title
Now showing items 1451-1470 of 1877
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Real-time 3D left ventricle segmentation and ejection fraction using deep learning
(Peer reviewed; Journal article, 2021)Supervised learning for 3D left ventricle (LV) ultrasound segmentation is difficult due to the challenges of acquiring large amounts annotated data. In this work, pre-training on a weakly labeled dataset, combined with ... -
Real-Time Automatic Ejection Fraction and Foreshortening Detection Using Deep Learning
(Peer reviewed; Journal article, 2020)Volume and ejection fraction (EF) measurements of the left ventricle (LV) in 2-D echocardiography are associated with a high uncertainty not only due to interobserver variability of the manual measurement, but also due to ... -
Real-time automatic quantification of left ventricular function by hand-held ultrasound devices in patients with suspected heart failure: a feasibility study of a diagnostic test with data from general practitioners, nurses and cardiologists
(Peer reviewed; Journal article, 2022)Objectives To evaluate the feasibility and reliability of hand-held ultrasound (HUD) examinations with real-time automatic decision-making software for ejection fraction (autoEF) and mitral annular plane systolic excursion ... -
Real-Time Echocardiography Guidance for Optimized Apical Standard Views
(Journal article; Peer reviewed, 2022) -
Real-time feedback on chest compression efficacy by hands-free carotid Doppler in a porcine model
(Journal article; Peer reviewed, 2024)Aim: Current guidelines for cardiopulmonary resuscitation (CPR) recommend a one-size-fits-all approach in relation to the positioning of chest compressions. We recently developed RescueDoppler, a hands-free Doppler ultrasound ... -
Real-time forecasting of emergency department arrivals using prehospital data
(Journal article; Peer reviewed, 2019)Background: Crowding in emergency departments (EDs) is a challenge globally. To counteract crowding in day-to-day operations, better tools to improve monitoring of the patient flow in the ED is needed. The objective of ... -
Real-time segmentation of blood vessels, nerves and bone in ultrasound-guided regional anesthesia using deep learning
(Peer reviewed; Journal article, 2021)Images from ultrasound-guided regional anesthesia procedures can be difficult to interpret, especially by non-experts. In this work, deep convolutional neural networks were used to segment blood vessels, nerves and bone ... -
Real-time Standard View Classification in Transthoracic Echocardiography using Convolutional Neural Networks
(Journal article; Peer reviewed, 2018)Transthoracic echocardiography examinations are usually performed according to a protocol comprising different probe postures providing standard views of the heart. These are used as a basis when assessing cardiac function, ... -
Real-time temporal coherent left ventricle segmentation using convolutional LSTMs
(Peer reviewed; Journal article, 2021) -
Reasons for prolonged time for diagnostic workup for stage I-II lung cancer and estimated effect of applying an optimized pathway for diagnostic procedures
(Journal article; Peer reviewed, 2019)Background:Minimizing the time until start of cancer treatment is a political goal. In Norway, the target time forlung cancer is 42 days. The aim of this study was to identify reasons for delays and estimate the effect on ... -
REBOARREST, resuscitative endovascular balloon occlusion of the aorta in non-traumatic out-of-hospital cardiac arrest: a study protocol for a randomised, parallel group, clinical multicentre trial
(Journal article; Peer reviewed, 2021)Background: Survival after out-of-hospital cardiac arrest (OHCA) is poor and dependent on high-quality cardiopulmonary resuscitation. Resuscitative endovascular balloon occlusion of the aorta (REBOA) may be advantageous ... -
Recovery trajectories in common musculoskeletal complaints by diagnosis contra prognostic phenotypes
(Peer reviewed; Journal article, 2021)Background There are large variations in symptoms and prognostic factors among patients sharing the same musculoskeletal (MSK) diagnosis, making traditional diagnostic labelling not very helpful in informing treatment ... -
Recurrent malignant ventricular arrhythmias and paresthesia—a mystery revealed as aconitine poisoning: a case report
(Peer reviewed; Journal article, 2023)Background: We report a case of a clinical challenge lasting for 12 months, with severe and unresolved clinical features involving several medical disciplines. Case presentation: A 53-year-old Caucasian male, who had been ... -
Reduced cardiorespiratory fitness is a mediator of excess all-cause mortality in rheumatoid arthritis: The Trøndelag Health Study
(Peer reviewed; Journal article, 2021)Objectives Investigate if low cardiorespiratory fitness (CRF) was associated with and acted as a mediator of excess all-cause mortality rate in persons suffering from rheumatoid arthritis (RA) compared with the general ... -
Reduced exercise capacity is associated with left ventricular systolic dysfunction in long-term survivors of allogeneic hematopoietic stem-cell transplantation
(Peer reviewed; Journal article, 2022)Purpose Exercise intolerance is a common complication in survivors of allogeneic hematopoietic stem-cell transplantation (allo-HSCT). The aim of this study was to determine if cardiac function measured with echocardiography ... -
Reduced Long-Term Relative Survival in Females and Younger Adults Undergoing Cardiac Surgery: A Prospective Cohort Study
(Journal article; Peer reviewed, 2016)Objectives To assess long-term survival and mortality in adult cardiac surgery patients. Methods 8,564 consecutive patients undergoing cardiac surgery in Trondheim, Norway from 2000 until censoring 31.12.2014 were ... -
Reduced peak oxygen uptake and implications for cardiovascular health and quality of life in patients with schizophrenia
(Journal article; Peer reviewed, 2011)Background: Peak oxygen uptake (VO2peak) is a strong predictor of cardiovascular disease (CVD) and all-cause mortality, but is inadequately described in patients with schizophrenia. The aim of this study was to ... -
Reduced reactive hyperemia may explain impaired flow-mediated dilation after on-pump cardiac surgery
(Journal article; Peer reviewed, 2017)In previous studies, Flow Mediated Dilation (FMD) was used to study the effect of cardiac surgery on endothelial function. This study investigated the effect of on‐pump cardiac surgery on FMD and reactive hyperemia. The ... -
Reduced white matter fractional anisotropy mediates cortical thickening in adults born preterm with very low birthweight.
(Journal article; Peer reviewed, 2018)Development of the cerebral cortex may be affected by aberrant white matter development. Preterm birth with very low birth weight (VLBW) has been associated with reduced fractional anisotropy of white matter and changes ...