Publications 2025

Wajdan A, Frostelid VC, Villegas-Martinez M, Halvorsen PS, Krogh MR, Elle OJ, Remme EW (2025)
Deep neural network valve detection for accelerometer based cardiac monitoring
Sci Rep, 15 (1), 17419
DOI 10.1038/s41598-025-00845-2, PubMed 40394042

Publications 2024

Boretto L, Pelanis E, Regensburger A, Fretland ÅA, Edwin B, Elle OJ (2024)
Hybrid optical-vision tracking in laparoscopy: accuracy of navigation and ultrasound reconstruction
Minim Invasive Ther Allied Technol, 33 (3), 176-183
DOI 10.1080/13645706.2024.2313032, PubMed 38334755

Boretto L, Pelanis E, Regensburger A, Petkov K, Palomar R, Fretland ÅA, Edwin B, Elle OJ (2024)
Intraoperative patient-specific volumetric reconstruction and 3D visualization for laparoscopic liver surgery
Healthc Technol Lett, 11 (6), 374-383
DOI 10.1049/htl2.12106, PubMed 39720761

Brun H, Lippert M, Langø T, Sanchez-Margallo J, Sanchez-Margallo F, Elle OJ (2024)
Comparing assisting technologies for proficiency in cardiac morphology: 3D printing and mixed reality versus CT slice images for morphological understanding of congenital heart defects by medical students
Anat Sci Educ, 18 (1), 68-76
DOI 10.1002/ase.2530, PubMed 39517006

Engelsen PC, Heyerdahl F, Maddali DD, Akhavi MS, Undseth RM, Elle OJ, Brun H (2024)
Correction to: Ascending with ultrasound: telementored eFAST in flight-a feasibility study
Emerg Radiol, 31 (4), 629
DOI 10.1007/s10140-024-02265-7, PubMed 39030394

Lippert M, d' Albenzio G, Suther KR, Dumont KA, Palomar R, Odland HH, Elle OJ, Bendz B, Brun H (2024)
HoloPatch: improving intracardiac patch fit through holographically modelled templates
Eur Heart J Imaging Methods Pract, 2 (3), qyae103
DOI 10.1093/ehjimp/qyae103, PubMed 39439746

Lippert M, Dumont KA, Birkeland S, Nainamalai V, Solvin H, Suther KR, Bendz B, Elle OJ, Brun H (2024)
Cardiac anatomic digital twins: findings from a single national centre
Eur Heart J Digit Health, 5 (6), 725-734
DOI 10.1093/ehjdh/ztae070, PubMed 39563912

Maddali DD, Solvin H, Lippert M, Karabiyik Y, Dahle G, Hjelmervik JM, Kiss G, Elle OJ, Brun H (2024)
Monte Carlo-based rendering of 3D echocardiography for mixed reality-guided atrial septal puncture positioning
Comput Assist Surg (Abingdon), 29 (1), 2403444
DOI 10.1080/24699322.2024.2403444, PubMed 39301766

Nainamalai V, Qair HA, Pelanis E, Jenssen HB, Fretland ÅA, Edwin B, Elle OJ, Balasingham I (2024)
Automated algorithm for medical data structuring, and segmentation using artificial intelligence within secured environment for dataset creation
Eur J Radiol Open, 13, 100582
DOI 10.1016/j.ejro.2024.100582, PubMed 39041057

Prasad PJR, Fretland AA, Albregtsen F, Elle OJ, Kumar RP (2024)
Transfer Learning with Interpretability: Liver Segmentation in CT and MR using Limited Dataset
Annu Int Conf IEEE Eng Med Biol Soc, 2024, 1-5
DOI 10.1109/EMBC53108.2024.10782042, PubMed 40039644

Publications 2023

Engelsen PC, Heyerdahl F, Maddali DD, Akhavi MS, Undseth RM, Elle OJ, Brun H (2023)
Ascending with ultrasound: telementored eFAST in flight-a feasibility study
Emerg Radiol, 31 (1), 25-31
DOI 10.1007/s10140-023-02186-x, PubMed 38066242

Gholinejad M, Edwin B, Elle OJ, Dankelman J, Loeve AJ (2023)
Process model analysis of parenchyma sparing laparoscopic liver surgery to recognize surgical steps and predict impact of new technologies
Surg Endosc, 37 (9), 7083-7099
DOI 10.1007/s00464-023-10166-y, PubMed 37386254

Homlong EG, Kumar RP, Elle OJ, Wiig O (2023)
Automated structuring of gait data for analysis purposes - A deep learning pilot example
Annu Int Conf IEEE Eng Med Biol Soc, 2023, 1-5
DOI 10.1109/EMBC40787.2023.10340938, PubMed 38083029

Lilja D, Schalit I, Espinoza A, Fiane AE, Dahle G, Littorin-Sandbu H, Pettersen FJ, Russell KE, Thiara APS, Elle OJ, Halvorsen PS (2023)
Detection of inflow obstruction in left ventricular assist devices by accelerometer: A porcine model study
J Heart Lung Transplant, 42 (8), 1005-1014
DOI 10.1016/j.healun.2023.03.017, PubMed 37023840

Pérez de Frutos J, Pedersen A, Pelanis E, Bouget D, Survarachakan S, Langø T, Elle OJ, Lindseth F (2023)
Learning deep abdominal CT registration through adaptive loss weighting and synthetic data generation
PLoS One, 18 (2), e0282110
DOI 10.1371/journal.pone.0282110, PubMed 36827289

Solvin H, Lippert M, Holmstrøm H, Elle OJ, Brun H (2023)
Real-time Remote Expert-guided Echocardiography by Medical Students
Ultrasound J, 15 (1), 28
DOI 10.1186/s13089-023-00328-3, PubMed 37266713

Tariverdi A, Cote Allard U, Mathiassen K, Elle OJ, Kalvøy H, Martinsen G, Tørresen J (2023)
Reinforcement Learning-Based Switching Controller for a Milliscale Robot in a Constrained Environment
T-ASE, 99, 1-17
DOI 10.1109/TASE.2023.3259905, PublikaID 441

Villegas-Martinez M, Odland HH, Hammersbøen LE, Sletten OJ, Stugaard M, Witsø M, Khan F, Wajdan A, Elle OJ, Remme EW (2023)
Pulse arrival time variation as a non-invasive marker of acute response to cardiac resynchronization therapy
Europace, 25 (3), 1183-1192
DOI 10.1093/europace/euad013, PubMed 36734281

Publications 2022

Gholinejad M, Pelanis E, Aghayan D, Fretland ÅA, Edwin B, Terkivatan T, Elle OJ, Loeve AJ, Dankelman J (2022)
Generic surgical process model for minimally invasive liver treatment methods
Sci Rep, 12 (1), 16684
DOI 10.1038/s41598-022-19891-1, PubMed 36202857

Grunbeck IA, Teatini A, Kumar RP, Elle OJ, Wiig O (2022)
Evaluation and Comparison of Target Registration Error in Active and Passive Optical Tracking Systems
Annu Int Conf IEEE Eng Med Biol Soc, 2022, 3476-3480
DOI 10.1109/EMBC48229.2022.9871591, PubMed 36085841

Lilja D, Schalit I, Espinoza A, Pettersen FJ, Elle OJ, Halvorsen PS (2022)
Detection of inflow obstruction in left ventricular assist devices by accelerometer: An in vitro study
Med Eng Phys, 110, 103917
DOI 10.1016/j.medengphy.2022.103917, PubMed 36564132

Nainamalai V, Prasad PJR, Pelanis E, Edwin B, Albregtsen F, Elle OJ, P Kumar R (2022)
Evaluation of clinical applicability of automated liver parenchyma segmentation of multi-center magnetic resonance images
Eur J Radiol Open, 9, 100448
DOI 10.1016/j.ejro.2022.100448, PubMed 36386761

Sajadi SM, Karbasi SM, Brun H, Tørresen J, Elle OJ, Mathiassen K (2022)
Towards Autonomous Robotic Biopsy-Design, Modeling and Control of a Robot for Needle Insertion of a Commercial Full Core Biopsy Instrument
Front Robot AI, 9, 896267
DOI 10.3389/frobt.2022.896267, PubMed 35832930

Survarachakan S, Prasad PJR, Naseem R, Pérez de Frutos J, Kumar RP, Langø T, Alaya Cheikh F, Elle OJ, Lindseth F (2022)
Deep learning for image-based liver analysis - A comprehensive review focusing on malignant lesions
Artif Intell Med, 130, 102331
DOI 10.1016/j.artmed.2022.102331, PubMed 35809970

Villegas-Martinez M, Krogh MR, Andersen ØS, Sletten OJ, Wajdan A, Odland HH, Elle OJ, Remme EW (2022)
Tracking Early Systolic Motion for Assessing Acute Response to Cardiac Resynchronization Therapy in Real Time
Front Physiol, 13, 903784
DOI 10.3389/fphys.2022.903784, PubMed 35721553

Wajdan A, Jahren TS, Villegas-Martinez M, Khan FH, Halvorsen PS, Odland HH, Elle OJ, Solberg AHS, Remme EW (2022)
Automatic Detection of Aortic Valve Events Using Deep Neural Networks on Cardiac Signals From Epicardially Placed Accelerometer
IEEE J Biomed Health Inform, 26 (9), 4450-4461
DOI 10.1109/JBHI.2022.3181148, PubMed 35679388

Publications 2021

Krogh MR, Halvorsen PS, Grymyr OHN, Bergsland J, Elle OJ, Fosse E, Remme EW (2021)
Continuous Estimation of Acute Changes in Preload Using Epicardially Attached Accelerometers
IEEE Trans Biomed Eng, 68 (7), 2067-2075
DOI 10.1109/TBME.2020.3020358, PubMed 32866091

Prasad PJR, Elle OJ, Lindseth F, Albregtsen F, Kumar RP (2021)
Modifying U-Net for small dataset - a simplified U-Net version for Liver Parenchyma segmentation
PROC SPIE, 11597, 115971O
DOI 10.1117/12.2582179

Prasad PJR, Survarachakan S, Khan ZA, Lindseth F, Elle OJ, Albregtsen F, Kumar RP (2021)
Numerical Evaluation on Parametric Choices Influencing Segmentation Results in Radiology Images-A Multi-Dataset Study
Electronics, 10 (4), 431
DOI 10.3390/electronics10040431

Tariverdi A, Venkiteswaran VK, Richter M, Elle OJ, Tørresen J, Mathiassen K, Misra S, Martinsen ØG (2021)
A Recurrent Neural-Network-Based Real-Time Dynamic Model for Soft Continuum Manipulators
Front Robot AI, 8, 631303
DOI 10.3389/frobt.2021.631303, PubMed 33869294

Teatini A, Kumar RP, Elle OJ, Wiig O (2021)
Mixed reality as a novel tool for diagnostic and surgical navigation in orthopaedics
Int J Comput Assist Radiol Surg, 16 (3), 407-414
DOI 10.1007/s11548-020-02302-z, PubMed 33555563

Publications 2020

Brun H, Pelanis E, Wiig O, Luzon JA, Birkeland S, Kumar RP, Fretland ÅA, Suther KR, Edwin B, Elle OJ (2020)
Mixed reality - new image technology in experimental use
Tidsskr Nor Laegeforen, 140 (17)
DOI 10.4045/tidsskr.20.0498, PubMed 33231396

Khan ZA, Beghdadi A, Cheikh FA, Kaaniche M, Pelanis E, Palomar R, Fretland AA, Edwin B, Elle OJ (2020)
Towards a Video Quality Assessment based Framework for Enhancement of Laparoscopic Videos
PROC SPIE, 11316, 113160P
DOI 10.1117/12.2549266

Kumar RP, Pelanis E, Bugge R, Brun H, Palomar R, Aghayan DL, Fretland ÅA, Edwin B, Elle OJ (2020)
Use of mixed reality for surgery planning: Assessment and development workflow
J Biomed Inform, 112S, 100077
DOI 10.1016/j.yjbinx.2020.100077, PubMed 34417006

Pelanis E, Teatini A, Eigl B, Regensburger A, Alzaga A, Kumar RP, Rudolph T, Aghayan DL, Riediger C, Kvarnström N, Elle OJ, Edwin B (2020)
Evaluation of a novel navigation platform for laparoscopic liver surgery with organ deformation compensation using injected fiducials
Med Image Anal, 69, 101946
DOI 10.1016/j.media.2020.101946, PubMed 33454603

Tariverdi A, Venkiteswaran VK, Martinsen ØG, Elle OJ, Tørresen J, Misra S (2020)
Dynamic modeling of soft continuum manipulators using lie group variational integration
PLoS One, 15 (7), e0236121
DOI 10.1371/journal.pone.0236121, PubMed 32697813

Tariverdi A, Venkiteswaran VK, Martinsen ØG, Elle OJ, Tørresen J, Misra S (2020)
Correction: Dynamic modeling of soft continuum manipulators using lie group variational integration
PLoS One, 15 (11), e0242235
DOI 10.1371/journal.pone.0242235, PubMed 33156876

Teatini A, Pérez de Frutos J, Eigl B, Pelanis E, Aghayan DL, Lai M, Kumar RP, Palomar R, Edwin B, Elle OJ (2020)
Influence of sampling accuracy on augmented reality for laparoscopic image-guided surgery
Minim Invasive Ther Allied Technol, 30 (4), 229-238
DOI 10.1080/13645706.2020.1727524, PubMed 32134342

Wajdan A, Krogh MR, Villegas-Martinez M, Halvorsen PS, Elle OJ, Remme EW (2020)
Automatic detection of valve events by epicardial accelerometer allows estimation of the left ventricular pressure trace and pressure-displacement loop area
Sci Rep, 10 (1), 20088
DOI 10.1038/s41598-020-76637-7, PubMed 33208784

Zachariadis O, Teatini A, Satpute N, Gómez-Luna J, Mutlu O, Elle OJ, Olivares J (2020)
Accelerating B-spline interpolation on GPUs: Application to medical image registration
Comput Methods Programs Biomed, 193, 105431
DOI 10.1016/j.cmpb.2020.105431, PubMed 32283385

Publications 2019

Brun H, Bugge RAB, Suther LKR, Birkeland S, Kumar R, Pelanis E, Elle OJ (2019)
Mixed reality holograms for heart surgery planning: first user experience in congenital heart disease
Eur Heart J Cardiovasc Imaging, 20 (8), 883-888
DOI 10.1093/ehjci/jey184, PubMed 30534951

Krogh MR, Halvorsen PS, Elle OJ, Bergsland J, Remme EW (2019)
Dynamic gravity compensation does not increase detection of myocardial ischemia in combined accelerometer and gyro sensor measurements
Sci Rep, 9 (1), 2671
DOI 10.1038/s41598-018-35630-x, PubMed 30804438

Luzon JA, Kumar RP, Stimec BV, Elle OJ, Bakka AO, Edwin B, Ignjatovic D (2019)
Semi-automated vs. manual 3D reconstruction of central mesenteric vascular models: the surgeon's verdict
Surg Endosc, 34 (11), 4890-4900
DOI 10.1007/s00464-019-07275-y, PubMed 31745632

Miseikis J, Brijacak I, Yahyanejad S, Glette K, Elle OJ, Torresen J (2019)
Two-Stage Transfer Learning for Heterogeneous Robot Detection and 3D Joint Position Estimation in a 2D Camera Image Using CNN
IEEE INT CONF ROBOT, 8883-8889

Naseem R, Cheikh FA, Beghdadi A, Elle OJ, Lindseth F (2019)
CROSS MODALITY GUIDED LIVER IMAGE ENHANCEMENT OF CT USING MRI
EUR W VIS INF PROCES, 46-51

Pelanis E, Kumar RP, Aghayan DL, Palomar R, Fretland ÅA, Brun H, Elle OJ, Edwin B (2019)
Use of mixed reality for improved spatial understanding of liver anatomy
Minim Invasive Ther Allied Technol, 29 (3), 154-160
DOI 10.1080/13645706.2019.1616558, PubMed 31116053

Satpute N, Naseem R, Pelanis E, Gómez-Luna J, Cheikh FA, Elle OJ, Olivares J (2019)
GPU acceleration of liver enhancement for tumor segmentation
Comput Methods Programs Biomed, 184, 105285
DOI 10.1016/j.cmpb.2019.105285, PubMed 31896055

Teatini A, Pelanis E, Aghayan DL, Kumar RP, Palomar R, Fretland ÅA, Edwin B, Elle OJ (2019)
The effect of intraoperative imaging on surgical navigation for laparoscopic liver resection surgery
Sci Rep, 9 (1), 18687
DOI 10.1038/s41598-019-54915-3, PubMed 31822701

Wajdan A, Krogh MR, Villegas-Martinez M, Halvorsen PS, Grymyr OJ, Elle OJ, Remme EW (2019)
Monitoring cardiac function by accelerometer - detecting start systole from the acceleration signal makes additional ECG recordings for R-peak detection redundant
Annu Int Conf IEEE Eng Med Biol Soc, 2019, 4922-4925
DOI 10.1109/EMBC.2019.8856417, PubMed 31946964

Wajdan A, Krogh MR, Villegas-Martinez M, Halvorsen PS, Grymyr OJ, Elle OJ, Remme EW (2019)
Monitoring cardiac function by accelerometer - detecting start systole from the acceleration signal makes additional ECG recordings for R-peak detection redundant
IEEE ENG MED BIO, 4922-4925

Wang CC, Mohammed AK, Cheikh FA, Beghdadi A, Elle OJ (2019)
Multiscale deep desmoking for laparoscopic surgery
PROC SPIE, 10949, 109491Y
DOI 10.1117/12.2507822

Publications 2018

Kumar RP, Barkhatov L, Edwin B, Albregtsen F, Elle OJ (2018)
Portal and Hepatic Vein Segmentation with Leak Restriction: A Pilot Study
IFMBE PROC, 65, 823-826
DOI 10.1007/978-981-10-5122-7_206

Miscikis J, Brijacak I, Yahyanejad S, Glette K, Elle OJ, Torresen J (2018)
Transfer Learning for Unseen Robot Detection and Joint Estimation on a Multi-Objective Convolutional Neural Network
2018 IEEE INTERNATIONAL CONFERENCE ON INTELLIGENCE AND SAFETY FOR ROBOTICS (ISR), 337-342

Miseikis J, Brijacak I, Yahyanejad S, Glette K, Elle OJ, Torresen J (2018)
Multi-Objective Convolutional Neural Networks for Robot Localisation and 3D Position Estimation in 2D Camera Images
2018 15TH INTERNATIONAL CONFERENCE ON UBIQUITOUS ROBOTS (UR), 597-603

Miseikis J, Knobelreiter P, Brijacak I, Yahyanejad S, Glette K, Elle OJ, Torresen J (2018)
Robot Localisation and 3D Position Estimation Using a Free-Moving Camera and Cascaded Convolutional Neural Networks
IEEE ASME INT C ADV, 181-187

Palomar R, Gomez-Luna J, Cheikh FA, Olivares-Bueno J, Elle OJ (2018)
High-Performance Computation of Bezier Surfaces on Parallel and Heterogeneous Platforms
Int. J. Parallel Program., 46 (6), 1035-1062
DOI 10.1007/s10766-017-0506-1

Pelanis E, Kumar R, Fretland A, Elle OJ, Edwin B (2018)
An early assessment for the use of HoloLens during laparoscopic liver resections
HPB, 20, S239
PublikaID 331

Pérez de Frutos J, Hofstad EF, Solberg OV, Tangen GA, Lindseth F, Langø T, Elle OJ, Mårvik R (2018)
Laboratory test of Single Landmark registration method for ultrasound-based navigation in laparoscopy using an open-source platform
Int J Comput Assist Radiol Surg, 13 (12), 1927-1936
DOI 10.1007/s11548-018-1830-7, PubMed 30074134

Sdiri B, Kaaniche M, Cheikh FA, Beghdadi A, Elle OJ (2018)
Efficient Enhancement of Stereo Endoscopic Images Based on Joint Wavelet Decomposition and Binocular Combination
IEEE Trans Med Imaging, 38 (1), 33-45
DOI 10.1109/TMI.2018.2853808, PubMed 29994612

Wang C, Alaya Cheikh F, Kaaniche M, Beghdadi A, Elle OJ (2018)
Variational based smoke removal in laparoscopic images
Biomed Eng Online, 17 (1), 139
DOI 10.1186/s12938-018-0590-5, PubMed 30340594

Wang CC, Cheikh FA, Kaaniche M, Elle OJ (2018)
Liver surface reconstruction for image guided surgery
PROC SPIE, 10576, UNSP 105762H
DOI 10.1117/12.2297398

Publications 2017

Krogh MR, Nghiem GM, Halvorsen PS, Elle OJ, Grymyr OJ, Hoff L, Remme EW (2017)
Gravity Compensation Method for Combined Accelerometer and Gyro Sensors Used in Cardiac Motion Measurements
Ann Biomed Eng, 45 (5), 1292-1304
DOI 10.1007/s10439-017-1798-4, PubMed 28116541

Kumar R, Barkhatov L, Edwin B, Albregtsen F, Elle OJ (2017)
Portal and Hepatic Vein Segmentation with Leak Restriction: A Pilot Study
IFMBE Proc, 0, 823-826
PublikaID 330

Mathiassen K, Dall'Alba D, Muradore R, Fiorini P, Elle OJ (2017)
Robust Real-Time Needle Tracking in 2-D Ultrasound Images Using Statistical Filtering
IEEE Trans. Control Syst. Technol., 25 (3), 966-978
DOI 10.1109/TCST.2016.2587733

Palomar R, Cheikh FA, Edwin B, Fretland Å, Beghdadi A, Elle OJ (2017)
A novel method for planning liver resections using deformable Bézier surfaces and distance maps
Comput Methods Programs Biomed, 144, 135-145
DOI 10.1016/j.cmpb.2017.03.019, PubMed 28494998

Publications 2016

Mathiassen K, Fjellin JE, Glette K, Hol PK, Elle OJ (2016)
An Ultrasound Robotic System Using the Commercial Robot UR5
Front. Robot. AI, 3, 1
DOI 10.3389/frobt.2016.00001

Mathiassen K, Glette K, Elle OJ (2016)
Visual Servoing of a Medical Ultrasound Probe for Needle Insertion
IEEE INT CONF ROBOT, 3426-3433

Miseikis J, Glette K, Elle OJ, Torresen J (2016)
Automatic Calibration of a Robot Manipulator and Multi 3D Camera System
IEEE/SICE I S SYS IN, 735-741

Palomar R, Cheikh FA, Edwin B, Beghdadhi A, Elle OJ (2016)
Surface reconstruction for planning and navigation of liver resections
Comput Med Imaging Graph, 53, 30-42
DOI 10.1016/j.compmedimag.2016.07.003, PubMed 27490316

Ševo I, Avramović A, Balasingham I, Elle OJ, Bergsland J, Aabakken L (2016)
Edge density based automatic detection of inflammation in colonoscopy videos
Comput Biol Med, 72, 138-50
DOI 10.1016/j.compbiomed.2016.03.017, PubMed 27043856

Publications 2015

Greisiger R, Shallop JK, Hol PK, Elle OJ, Jablonski GE (2015)
Cochlear implantees: Analysis of behavioral and objective measures for a clinical population of various age groups
Cochlear Implants Int, 16 Suppl 4, 1-19
DOI 10.1080/14670100.2015.1110372, PubMed 26642899

Kaiser M, Detert M, Rube MA, El-Tahir A, Elle OJ, Melzer A, Schmidt B, Rose GH (2015)
Resonant marker design and fabrication techniques for device visualization during interventional magnetic resonance imaging
Biomed Tech (Berl), 60 (2), 89-103
DOI 10.1515/bmt-2013-0097, PubMed 25460277

Kumar RP, Albregtsen F, Reimers M, Edwin B, Lango T, Elle OJ (2015)
Blood Vessel Segmentation and Centerline Tracking Using Local Structure Analysis
IFMBE PROC, 45, 122-+
DOI 10.1007/978-3-319-11128-5_31

Muradore R, Fiorini P, Akgun G, Barkana DE, Bonfe M, Borierol F, Caprara A, De Rossi G, Dodi R, Elle OJ, Ferraguti F, Gasperottil L, Gassert R, Mathiassen K, Handini D, Lambercy O, Li L, Kruusmaal M, Manurung AO, Meruzzi G, Nguyen HQP, Freda N, Riolfo G, Ristolainen A, Sanna A et al. (2015)
Development of a Cognitive Robotic System for Simple Surgical Tasks
Int. J. Adv. Robot. Syst., 12, 37
DOI 10.5772/60137

Publications 2014

Bergsland J, Elle OJ, Fosse E (2014)
Barriers to medical device innovation
Med Devices (Auckl), 7, 205-9
DOI 10.2147/MDER.S43369, PubMed 24966699

Grymyr OJ, Remme EW, Espinoza A, Skulstad H, Elle OJ, Fosse E, Halvorsen PS (2014)
Assessment of 3D motion increases the applicability of accelerometers for monitoring left ventricular function
Interact Cardiovasc Thorac Surg, 20 (3), 329-37
DOI 10.1093/icvts/ivu404, PubMed 25472979

Kumar RP, Albregtsen F, Reimers M, Edwin B, Langø T, Elle OJ (2014)
Three-Dimensional Blood Vessel Segmentation and Centerline Extraction based on Two-Dimensional Cross-Section Analysis
Ann Biomed Eng, 43 (5), 1223-34
DOI 10.1007/s10439-014-1184-4, PubMed 25398332

Publications 2013

Eldirdiri A, Courivaud F, Palomar R, Hol PK, Elle OJ (2013)
Catheter tip tracking for MR-guided interventions using discrete Kalman filter and mean shift localization
Int J Comput Assist Radiol Surg, 9 (2), 313-22
DOI 10.1007/s11548-013-0933-4, PubMed 23974979

Kumar R, Albregtsen F, Reimers M, Langø T, Edwin B, Elle OJ (2013)
3D multiscale vessel enhancement based centerline extraction of blood vessels
In SPIE Medical Imaging, International Society for Optics and Photonics
DOI 10.1117/12.2006779, PublikaID 325

Kumar R, Rijkhorst EJ, Geier O, Barratt D, Elle OJ (2013)
Study on liver blood vessel movement during breathing cycle
In Colour and Visual Computing Symposium (CVCS), 2013, IEEE
DOI 10.1109/CVCS.2013.6626279, PublikaID 326

Kumar RP, Albregtsen F, Reimers M, Lango T, Edwin B, Elle OJ (2013)
3D multiscale vessel enhancement based centerline extraction of blood vessels
PROC SPIE, 8669, 86691X
DOI 10.1117/12.2006779

Kumar RP, Rijkhorst EJ, Geier O, Barratt D, Elle OJ (2013)
STUDY ON LIVER BLOOD VESSEL MOVEMENT DURING BREATHING CYCLE
2013 COLOUR AND VISUAL COMPUTING SYMPOSIUM (CVCS)

Mathiassen K, Dall'Alba D, Muradore R, Fiorini P, Elle OJ (2013)
Real-Time Biopsy Needle Tip Estimation in 2D Ultrasound Images
IEEE INT CONF ROBOT, 4363-4369

Mathiassen K, Dall'Alba D, Muradore R, Fiorini P, Elle OJ (2013)
Real-time biopsy needle tip estimation in 2D ultrasound images
IEEE ICRA, 2013, 4363-4369
DOI 10.1109/ICRA.2013.6631195, PublikaID 206

Publications 2012

Fernandez-Gutierrez F, Barclay A, Martin T, Elle OJ, Houston G, Melzer A (2012)
Workflow for image-guided interventions: Characterisation and Validation. Towards the Integrated Imaging Operating Room of the future
Biomed. Eng.-Biomed. Tech., 57 1, 1048
DOI 10.1515/bmt-2012-4453

Ho QPN, Kang HJ, Suh YS, Elle OJ (2012)
A Platform Stabilization Algorithm Based on Feedforward Visual-Inertial Servoing
Int. J. Precis. Eng. Manuf., 13 (4), 517-526
DOI 10.1007/s12541-012-0067-6

Naerum E, Elle OJ, Hannaford B (2012)
The Effect of Interaction Force Estimation on Performance in Bilateral Teleoperation
IEEE Trans Haptics, 5 (2), 160-71
DOI 10.1109/TOH.2011.51, PubMed 26964072

Remme EW, Hoff L, Halvorsen PS, Opdahl A, Fosse E, Elle OJ (2012)
Simulation model of cardiac three dimensional accelerometer measurements
Med Eng Phys, 34 (7), 990-8
DOI 10.1016/j.medengphy.2012.04.015, PubMed 22633656

Publications 2011

Bergsland J, Mujanovic E, Elle OJ, Mirtaheri P, Fosse E (2011)
Minimally invasive repair of the mitral valve: technological and clinical developments
Minim Invasive Ther Allied Technol, 20 (2), 72-7
DOI 10.3109/13645706.2011.554843, PubMed 21417839

Greisiger R, Tvete O, Shallop J, Elle OJ, Hol PK, Jablonski GE (2011)
Cochlear implant-evoked electrical auditory brainstem responses during surgery in patients with auditory neuropathy spectrum disorder
Cochlear Implants Int, 12 Suppl 1, S58-60
DOI 10.1179/146701011X13001035753137, PubMed 21756475

Publications 2010

Ali W, Morvan T, Risholm P, Elle OJ, Samset E (2010)
A VISUALIZATION AND FUSION SYSTEM FOR IMAGE GUIDED RFA PROCEDURES
Int. J. Image Graph., 10 (2), 155-174
DOI 10.1142/S0219467810003718

Lamata P, Lamata F, Sojar V, Makowski P, Massoptier L, Casciaro S, Ali W, Stüdeli T, Declerck J, Elle OJ, Edwin B (2010)
Use of the Resection Map system as guidance during hepatectomy
Surg Endosc, 24 (9), 2327-37
DOI 10.1007/s00464-010-0915-3, PubMed 20177937

Publications 2009

Halvorsen PS, Remme EW, Espinoza A, Skulstad H, Lundblad R, Bergsland J, Hoff L, Imenes K, Edvardsen T, Elle OJ, Fosse E (2009)
Automatic real-time detection of myocardial ischemia by epicardial accelerometer
J Thorac Cardiovasc Surg, 139 (4), 1026-32
DOI 10.1016/j.jtcvs.2009.05.031, PubMed 19717169

Lowrie C, Desmulliez MPY, Hoff L, Elle OJ, Fosse E (2009)
MEMS Three-Axis Accelerometer: Design, Fabrication and Application of Measuring Heart Wall Motion
DTIP 2009: SYMPOSIUM ON DESIGN, TEST, INTEGRATION AND PACKAGING OF MEMS/MOEMS, 229-+

Lowrie C, Desmulliez MPY, Hoff L, Elle OJ, Fosse E (2009)
Fabrication of a MEMS accelerometer to detect heart bypass surgery complications
Sens. Rev., 29 (4), 319-325
DOI 10.1108/02602280910986557

Morvan T, Martinsen M, Reimers M, Samset E, Elle OJ (2009)
Collision detection and untangling for surgical robotic manipulators
Int J Med Robot, 5 (3), 233-42
DOI 10.1002/rcs.247, PubMed 19367614

Remme EW, Hoff L, Halvorsen PS, Naerum E, Skulstad H, Fleischer LA, Elle OJ, Fosse E (2009)
Validation of cardiac accelerometer sensor measurements
Physiol Meas, 30 (12), 1429-44
DOI 10.1088/0967-3334/30/12/010, PubMed 19907074

Sette MM, Furtado H, Studeli T, Morita T, Elle OJ, Van Brussel H, Sloten JV (2009)
Physiological Parameters Based Control Scheme for Automatic Intravascular Balloon Inflation
IFMBE PROC, 25, 333-+

Publications 2008

Cornellà J, Elle OJ, Ali W, Samset E (2008)
Intraoperative navigation of an optically tracked surgical robot
Med Image Comput Comput Assist Interv, 11 (Pt 2), 587-94
DOI 10.1007/978-3-540-85990-1_70, PubMed 18982652

Cornella J, Elle OJ, Ali W, Samset E (2008)
Intraoperative Navigation of an Optically Tracked Surgical Robot
LECT NOTES COMPUT SC, 5242, 587-594

Cornella J, Elle OJ, Ali W, Samset E (2008)
Improving Cartesian Position Accuracy of a Telesurgical Robot
2008 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS, VOLS 1-5, 1172-+

Fleischer LA, Halvorsen PS, Hoff L, Fosse E, Elle OJ (2008)
Epicardial Acceleration Signal Measured Using a Single Chip 3-axis Accelerometer
IFMBE PROC, 20, 221-+

Halvorsen PS, Espinoza A, Fleischer LA, Elle OJ, Hoff L, Lundblad R, Skulstad H, Edvardsen T, Ihlen H, Fosse E (2008)
Feasibility of a three-axis epicardial accelerometer in detecting myocardial ischemia in cardiac surgical patients
J Thorac Cardiovasc Surg, 136 (6), 1496-502
DOI 10.1016/j.jtcvs.2008.08.043, PubMed 19114197

Halvorsen PS, Fleischer LA, Espinoza A, Elle OJ, Hoff L, Skulstad H, Edvardsen T, Fosse E (2008)
Detection of myocardial ischaemia by epicardial accelerometers in the pig
Br J Anaesth, 102 (1), 29-37
DOI 10.1093/bja/aen331, PubMed 19022793

Lowrie C, Desmulliez MPY, Hoff L, Elle OJ, Fosse E (2008)
Design and fabrication of an implantable three-axis accelerometer for post-surgery monitoring of heart wall motion
ESTC 2008: 2ND ELECTRONICS SYSTEM-INTEGRATION TECHNOLOGY CONFERENCE, VOLS 1 AND 2, PROCEEDINGS, 435-+
DOI 10.1109/ESTC.2008.4684387

Naerum E, Cornella J, Elle OJ (2008)
Wavelet networks for estimation of coupled friction in robotic manipulators
IEEE INT CONF ROBOT, 862-867
DOI 10.1109/ROBOT.2008.4543313

Naerum E, Cornella J, Elle OJ (2008)
Contact Force Estimation for Backdrivable Robotic Manipulators with Coupled Friction
2008 IEEE/RSJ INTERNATIONAL CONFERENCE ON ROBOTS AND INTELLIGENT SYSTEMS, VOLS 1-3, CONFERENCE PROCEEDINGS, 3021-3027
DOI 10.1109/IROS.2008.4651192

Publications 2007

Imenes K, Aasmundtveit K, Husa EM, Høgetveit JO, Halvorsen S, Elle OJ, Mirtaheri P, Fosse E, Hoff L (2007)
Assembly and packaging of a three-axis micro accelerometer used for detection of heart infarction
Biomed Microdevices, 9 (6), 951-7
DOI 10.1007/s10544-007-9082-2, PubMed 17492383

Risholm P, Narum E, Elle OJ, Samset E (2007)
An inexpensive and portable system for improving EM tracking accuracy
Int. J. Comput. Assist. Radiol. Surg., 2 1, S181-S182

Publications 2006

Halvorsen FH, Elle OJ, Dalinin VV, Mørk BE, Sørhus V, Røtnes JS, Fosse E (2006)
Virtual reality simulator training equals mechanical robotic training in improving robot-assisted basic suturing skills
Surg Endosc, 20 (10), 1565-9
DOI 10.1007/s00464-004-9270-6, PubMed 16902750

Naerum E, Elle OJ, Egeland O (2006)
Heartbeat tracking using the AESOP 3000DS Endoscope Positioner
Int. J. Comput. Assist. Radiol. Surg., 1 1, 267-269

Risholm P, Sauter A, Bosse G, Elle OJ, Samset E (2006)
Registration free MRI-US fusion for identification of infraclavicular parts of plexus brachialis
Int. J. Comput. Assist. Radiol. Surg., 1 1, 57-59

Publications 2005

Elle OJ, Halvorsen S, Gulbrandsen MG, Aurdal L, Bakken A, Samset E, Dugstad H, Fosse E (2005)
Early recognition of regional cardiac ischemia using a 3-axis accelerometer sensor
Physiol Meas, 26 (4), 429-40
DOI 10.1088/0967-3334/26/4/009, PubMed 15886438

Halvorsen FH, Elle OJ, Fosse E (2005)
Simulators in surgery
Minim Invasive Ther Allied Technol, 14 (4), 214-23
DOI 10.1080/13645700500243869, PubMed 16754167

Publications 2004

Hoff L, Elle OJ, Grimnes MJ, Halvorsen S, Alker HJ, Fosse E (2004)
Measurements of heart motion using accelerometers
Conf Proc IEEE Eng Med Biol Soc, 2004, 2049-51
DOI 10.1109/IEMBS.2004.1403602, PubMed 17272122

Publications 2002

Røtnes JS, Kaasa J, Westgaard G, Eriksen EM, Hvidsten PO, Strøm K, Sørhus V, Halbwachs Y, Haug E, Grimnes M, Fontenelle H, Ekeberg T, Thomassen JB, Elle OJ, Fosse E (2002)
A tutorial platform suitable for surgical simulator training (SimMentor)
Stud Health Technol Inform, 85, 419-25
PubMed 15458125

Samset E, Talsma A, Kintel M, Elle OJ, Aurdal L, Hirschberg H, Fosse E (2002)
A virtual environment for surgical image guidance in intraoperative MRI
Comput Aided Surg, 7 (4), 187-96
DOI 10.1002/igs.10044, PubMed 12454891

Publications 2001

Røtnes JS, Kaasa J, Westgaard G, Eriksen EM, Hvidsten PØ, Strøm K, Sørhus V, Halbwachs Y, Elle OJ, Fosse E (2001)
Digital trainer developed for robotic assisted cardiac surgery
Stud Health Technol Inform, 81, 424-30
PubMed 11317783

Publications 2000

Fosse E, Elle OJ, Samset E, Johansen M, Røtnes JS, Tønnessen TI, Edwin B (2000)
[Image guided and robotic treatment--the advance of cybernetics in clinical medicine]
Tidsskr Nor Laegeforen, 120 (1), 65-9
PubMed 10815485