2023

• Bjerkan, Kirsti Kverndokk; Sandvik, Jorunn; Nymo, Siren; Græslie, Hallvard; Johnsen, Gjermund; Mårvik, Ronald. (2023) Vitamin and Mineral Deficiency 12 Years After Roux-en-Y Gastric Bypass a Cross-Sectional Multicenter Study. Obesity Surgery
  Academic article

2022

• Nymo, Siren; Skjølsvold, Oda; Aukan, Marthe Isaksen; Finlayson, Graham; Græslie, Hallvard; Mårvik, Ronald. (2022) Suboptimal Weight Loss 13 Years After Roux-en-Y Gastric Bypass: Is Hedonic Hunger, Eating Behaviour and Food Reward to Blame?. Obesity Surgery
  Academic article
• Belgau, Ingrid Martine; Johnsen, Gjermund; Græslie, Hallvard; Mårvik, Ronald; Nymo, Siren; Bjerkan, Kirsti Kverndokk. (2022) Frequency of cholelithiasis in need of surgical or endoscopic treatment a decade or more after Roux-en-Y gastric bypass. Surgical Endoscopy
  Academic article
• Bjerkan, Kirsti Kverndokk; Sandvik, Jorunn; Nymo, Siren; Græslie, Hallvard; Johnsen, Gjermund; Mårvik, Ronald. (2022) The Long-Term Impact of Postoperative Educational Programs on Weight Loss After Roux-en-Y Gastric Bypass. Obesity Surgery
  Academic article

2021

• Sandvik, Jorunn; Bjerkan, Kirsti Kverndokk; Græslie, Hallvard; Hoff, Dag Arne Lihaug; Johnsen, Gjermund; Kløckner, Christian. (2021) Iron Deficiency and Anemia 10 Years After Roux-en-Y Gastric Bypass for Severe Obesity. Frontiers in Endocrinology
  Academic article
• Strømmen, Magnus; Kløckner, Christian; Bjerkan, Kirsti Kverndokk; Græslie, Hallvard; Hoff, Dag Arne Lihaug; Johnsen, Gjermund. (2021) Characteristics of Patients Reporting Presumed Problematic Drinking Behavior After Gastric Bypass: Exploring Long-Term Data From the BAROBS Study. Frontiers in Endocrinology
  Academic article
• Nienhuijs, Simon W; Kuhry, Esther; Lemmens, Valery; Mårvik, Ronald; Hingh, Ignace HJT de; Drake, Thomas M.. (2021) Transanal endoscopic microsurgery (TEM) compared to radical surgery for rectal cancer. Cochrane Database of Systematic Reviews
  Academic article

2019

• Nymo, Siren; Johnsen, Gjermund; Mårvik, Ronald; Græslie, Hallvard; Kulseng, Bård Eirik; Sandvik, Jorunn. (2019) Patient satisfaction more than ten years after Roux-en-Y gastric bypass. Obesity Surgery
  Abstract
• Mansoor, Saira Mauland; Våpenstad, Cecilie; Mårvik, Ronald; Glomsaker, Tom Birger; Bliksøen, Marte. (2019) Construct validity of eoSim - a low-cost and portable laparoscopic simulator. MITAT. Minimally invasive therapy & allied technologies
  Academic article
• Våpenstad, Cecilie; Aadahl, Petter; Hernes, Toril A. Nagelhus; Mårvik, Ronald. (2019) Simulation-based Training and Assessment in Minimally Invasive Surgery Exploration and Validation. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
  Doctoral dissertation
• Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bernstein, Tor Eivind; Aadahl, Petter; Johnsen, Gjermund; Mårvik, Ronald. (2019) Optimal timing of assessment tasks depending on experience level of surgical trainees. MITAT. Minimally invasive therapy & allied technologies
  Academic article

2018

• Pham, Khanh Do-Cong; Havre, Roald Flesland; Langø, Thomas; Hofstad, Erlend Fagertun; Tangen, Geir Arne; Mårvik, Ronald. (2018) Navigated retrograde endoscopic myotomy (REM) for the treatment of therapy-resistant achalasia. Neurogastroenterology and Motility
  Academic article
• Frutos, Javier Perez de; Hofstad, Erlend Fagertun; Solberg, Ole Vegard; Tangen, Geir Arne; Lindseth, Frank; Langø, Thomas. (2018) Laboratory test of Single Landmark registration method for ultrasound-based navigation in laparoscopy using an open-source platform. International Journal of Computer Assisted Radiology and Surgery
  Academic article

2017

• Grong, Eivind; Nord, Christoffer; Arbo, Ingerid Brænne; Eriksson, Monica; Kulseng, Bård Eirik; Ahlgren, Ulf. (2017) The effect of hypergastrinemia following sleeve gastrectomy and pantoprazole on type 2 diabetes mellitus and beta-cell mass in Goto-Kakizaki rats. Journal of Endocrinological Investigation
  Academic article
• Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bø, Lars Eirik; Kuhry, Esther; Johnsen, Gjermund; Mårvik, Ronald. (2017) Lack of transfer of skills after virtual reality simulator training with haptic feedback. MITAT. Minimally invasive therapy & allied technologies
  Academic article
• Nord, Christoffer; Eriksson, Maria; Dicker, Andrea; Eriksson, Anna; Grong, Eivind; Ilegems, Erwin. (2017) Biochemical profiling of diabetes disease progression by multivariate vibrational microspectroscopy of the pancreas. Scientific Reports
  Academic article
• Rethy, Anna; Sæternes, Jørn Ove; Halgunset, Jostein; Mårvik, Ronald; Hofstad, Erlend Fagertun; Margallo, Juan A. Sánchez. (2017) Anthropomorphic liver phantom with flow for multimodal image-guided liver therapy research and training. International Journal of Computer Assisted Radiology and Surgery
  Academic article
• Hofstad, Erlend Fagertun; Våpenstad, Cecilie; Bø, Lars Eirik; Langø, Thomas; Kuhry, Esther; Mårvik, Ronald. (2017) Psychomotor skills assessment by motion analysis in minimally invasive surgery on an animal organ. MITAT. Minimally invasive therapy & allied technologies
  Academic article

2016

• Grong, Eivind; Kulseng, Bård Eirik; Arbo, Ingerid Brænne; Nord, Christoffer; Eriksson, Maria; Ahlgren, Ulf. (2016) Sleeve gastrectomy, but not duodenojejunostomy, preserves total beta-cell mass in Goto-Kakizaki rats evaluated by three-dimensional optical projection tomography. Surgical Endoscopy
  Academic article
• Sanchez-Margallo, Juan A.; Langø, Thomas; Hofstad, Erlend Fagertun; Mårvik, Ronald; Sanchez-Margallo, Francisco M.. (2016) Laparoscopic Pancreas Surgery: Image Guidance Solutions. IntechOpen IntechOpen
  Non-fiction book
• Chen, Duan; Olsen, Magnus Kringstad; Strømmen, Magnus; Johannessen, Helene; Bjøru, Hege Tevik; Salater, Sissel. (2016) Intragastric Injection of Botulinum Toxin a to Treat Obesity: Mechanism of Action and a Randomized, Double-Blind, Placebo-Controlled Phase II Trial With Open-Label Extension Study. Gastroenterology
  Abstract
• Vries, Arild de; Kuhry, Esther; Mårvik, Ronald. (2016) Operative procedures in warm humidified air: Can it reduce adhesion formation? A randomized experimental rat model. International Journal of Surgery Open
  Academic article

2015

• Grong, Eivind; Græslie, Hallvard; Munkvold, Bjørn; Arbo, Ingerid Brænne; Kulseng, Bård Eirik; Waldum, Helge. (2015) Gastrin secretion after bariatric surgery - response to a protein-rich mixed meal following roux-en-y gastric bypass and sleeve gastrectomy: a pilot study in normoglycemic women. Obesity Surgery
  Academic article
• Strømmen, Magnus; Bakken, Inger Johanne; Andenæs, Ellen; Kløckner, Christian; Mårvik, Ronald; Kulseng, Bård Eirik. (2015) Fet, feit eller bare overvektig = Fat, obese or just overweight. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article

2014

• Sagatun, Liv; Jianu, Constantin-Sergiu; Fossmark, Reidar; Mårvik, Ronald; Nordrum, Ivar Skjåk; Waldum, Helge. (2014) The gastric mucosa 25 years after proxiaml gastric vagotomy. Scandinavian Journal of Gastroenterology
  Academic article
• Vries, Arild Wiebe de; Mårvik, Ronald; Kuhry, Esther. (2014) Reply to the letter entitled 'An inexact study design produces misleading conclusions'<sup>1</sup>. International Journal of Surgery (IJS)
  Reader opinion piece
• Grong, Eivind; Arbo, Ingerid Brænne; Thu, Ole Kristian Forstrønen; Kuhry, Esther; Kulseng, Bård Eirik; Mårvik, Ronald. (2014) The effect of duodenojejunostomy and sleeve gastrectomy on type 2 diabetes mellitus and gastrin secretion in Goto-Kakizaki rats. Surgical Endoscopy
  Academic article

2013

• Brenna, Øystein; Furnes, Marianne Waldum; Drozdov, Ignat; Granlund, Atle Van Beelen; Flatberg, Arnar; Sandvik, Arne Kristian. (2013) Relevance of TNBS-Colitis in Rats: A Methodological Study with Endoscopic, Historical and Transcripttomic Characterization and Correlation to IBD. PLOS ONE
  Academic article
• Kodama, Yosuke; Johannessen, Helene; Furnes, Marianne Waldum; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald. (2013) Mechanistic Comparison between Gastric Bypass vs. Duodenal Switch with Sleeve Gastrectomy in Rat Models. PLOS ONE
  Academic article
• Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bø, Lars Eirik; Chmarra, Magdalena Karolina; Kuhry, Esther; Johnsen, Gjermund. (2013) Limitations of haptic feedback devices on construct validity of the LapSim® virtual reality simulator. Surgical Endoscopy
  Academic article
• Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Langø, Thomas; Mårvik, Ronald; Chmarra, Magdalena Karolina. (2013) Perceiving haptic feedback in virtual reality simulators. Surgical Endoscopy
  Academic article
• Chmarra, Magdalena Karolina; Hansen, Rune; Mårvik, Ronald; Langø, Thomas. (2013) Multimodal Phantom of Liver Tissue. PLOS ONE
  Academic article
• Sandberg, Rita Marie; Dahl, Jens Kornelius; Vedul-Kjelsås, Einar; Engum, Bjørnar; Kulseng, Bård Eirik; Mårvik, Ronald. (2013) Health-Related Quality of Life in Obese Presurgery Patients with and without Binge Eating Disorder, and Subdiagnostic Binge Eating Disorders. Journal of Obesity
  Academic article
• Vries, Arild Wiebe de; Mårvik, Ronald; Kuhry, Esther. (2013) To perform operative procedures in an optimized local atmosphere: Can it reduce post-operative adhesion formation?. International Journal of Surgery (IJS)
  Academic article
• Rethy, Anna; Langø, Thomas; Mårvik, Ronald. (2013) Laparoscopic Ultrasound for Hepatocellular Carcinoma and Colorectal Liver Metastasis: An Overview. Surgical laparoscopy, endoscopy & percutaneous techniques
  Academic literature review

2012

• Hofstad, Erlend Fagertun; Våpenstad, Cecilie; Chmarra, Magdalena; Langø, Thomas; Kuhry, Esther; Mårvik, Ronald. (2012) A study of psychomotor skills in minimally invasive surgery: what differentiates expert and nonexpert performance. Surgical Endoscopy
  Academic article
• Langø, Thomas; Hernes, Toril A. Nagelhus; Hofstad, Erlend Fagertun; Våpenstad, Cecilie; Mårvik, Ronald; Ystgaard, Brynjulf. (2012) Medisinsk Teknologisk forskning og samarbeid innen gastroenterologi i EU prosjekter i Trondheim. Kirurgen
  Article in business/trade/industry journal
• Brenna, Øystein; Furnes, Marianne Waldum; Granlund, Atle; Flatberg, Arnar; Drozdov, Ignat; Sandvik, Arne Kristian. (2012) Tu1912 Endoscopic, Histological and Transcriptomic Characterization of TNBS-Colitis in Rats, a Model for IBD. Gastroenterology
  Abstract
• Langø, Thomas; Vijayan, Sinara; Rethy, Anna; Våpenstad, Cecilie; Solberg, Ole Vegard; Mårvik, Ronald. (2012) Navigated laparoscopic ultrasound in abdominal soft tissue surgery: technological overview and perspectives. International Journal of Computer Assisted Radiology and Surgery
  Academic literature review
• Suhail, Abbass; Mårvik, Ronald; Halgunset, Jostein; Kuhry, Esther. (2012) Efficacy and safety of transgastric closure in natural orifice transluminal endoscopic surgery using the OTSC system and T-bar sutures: a survival study in a porcine model. Surgical Endoscopy
  Academic article
• Kodama, Yosuke; Johannessen, Helene; Furnes, Marianne Waldum; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald. (2012) Gastric Bypass and Duodenal Switch Cause Body Weight Loss Through Different Mechanisms in Rats. Gastroenterology
  Abstract
• Johannessen, Helene; Kodama, Yosuke; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald; Kulseng, Bård Eirik. (2012) Evidence for the Hindgut Hypothesis After Ileal Interposition Associated With Sleeve Gastrectomy: Increased Number of GLP-1-Producing Cells in Interposed Ileum and Pancreatic Islets in Rats. Gastroenterology
  Abstract
• Lindseth, Frank; Langø, Thomas; Selbekk, Tormod; Tangen, Geir Arne; Hofstad, Erlend Fagertun; Unsgård, Geirmund. (2012) Navigasjonsteknologi blir benyttet innenfor stadig flere kliniske områder. Kirurgen
  Article in business/trade/industry journal
• Hernes, Toril A. Nagelhus; Skogås, Jan Gunnar; Langø, Thomas; Våpenstad, Cecilie; Lindseth, Frank; Mårvik, Ronald. (2012) Infrastruktur tilrettelagt for klinisk og medisinsk teknologisk forskningog simulering kan være driver for bedre pasientsikkerhet og fremtidig utvikling innen kirurgi. Kirurgen
  Article in business/trade/industry journal
• Johannessen, Helene; Kodama, Yosuke; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald; Kulseng, Bård Eirik. (2012) Altered Eating Behavior by Subdiaphragmatic Truncal Vagus Nerve Stimulation in Rats. Gastroenterology
  Abstract
• Jianu, Constantin-Sergiu; Fossmark, Reidar; Viset, Trond; Qvigstad, Gunnar; Sørdal, Øystein Finset; Mårvik, Ronald. (2012) Gastric carcinoids after long-term use of a proton pump inhibitor. Alimentary Pharmacology and Therapeutics
  Academic article

2011

• Mårvik, Ronald; Myhre, Hans Olav; Unsgård, Geirmund. (2011) Experimental Surgery in Trondheim.
  Academic chapter/article/Conference paper
• Dahl, Jens Kornelius; Eriksen, Lasse; Vedul-Kjelsås, Einar; Strømmen, Magnus; Kulseng, Bård Eirik; Mårvik, Ronald. (2011) Depression, anxiety, and neuroticism in obese patients waiting for bariatric surgery: Differences between patients with and without eating disorders and subthreshold binge eating disorders. Obesity Research and Clinical Practice
  Academic article
• Martins, Catia; Strømmen, Magnus; Stavne, Ola A.; Nossum, Randi; Mårvik, Ronald; Kulseng, Bård Eirik. (2011) Bariatric Surgery versus Lifestyle Interventions for Morbid Obesity-Changes in Body Weight, Risk Factors and Comorbidities at 1 Year. Obesity Surgery
  Academic article

2010

• Våpenstad, Cecilie; Bø, Lars Eirik; Langø, Thomas; Mårvik, Ronald. (2010) Construct validity of two modules on a virtual reality laparoscopic training simulator. MITAT. Minimally invasive therapy & allied technologies
  Abstract
• Büchel, D; Mårvik, Ronald; Hallabrin, B; Matern, U. (2010) Ergonomics of disposable handles for minimally invasive surgery. Surgical Endoscopy
  Academic article
• Våpenstad, Cecilie; Rethy, Anna; Langø, Thomas; Selbekk, Tormod; Ystgaard, Brynjulf; Hernes, Toril A. Nagelhus. (2010) Laparoscopic ultrasound: a survey of its current and future use, requirements, and integration with navigation technology. Surgical Endoscopy
  Academic article
• Dahl, Jens Kornelius; Eriksen, Lasse; Vedul-Kjelsås, Einar; Strømmen, Magnus; Kulseng, Bård Eirik; Mårvik, Ronald. (2010) Prevalence of all relevant eating disorders in patients waiting for bariatric surgery: A comparison between patients with and without eating disorders. Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity
  Academic article
• Rethy, Anna; Langø, Thomas; Aasland, Jenny Kristin; Mårvik, Ronald. (2010) Development of a Multimodal Tumor Model for Porcine Liver. Journal of Gastrointestinal Surgery
  Academic article

2009

• Solberg, Ole Vegard; Langø, T.; Tangen, GA; Mårvik, Ronald; Ystgaard, B; Rethy, Anna. (2009) Navigated ultrasound in laparoscopic surgery. MITAT. Minimally invasive therapy & allied technologies
  Academic article
• Wik, Anne Karin; Torvik, Ruth; Vinsnes, Anne Guttormsen; Hassel, Nina; Johnsen, Gjermund; Mårvik, Ronald. (2009) Pasienter med sykelig overvekt: Forekomst av neuralgiforme symptomer etter laparoskopisk gastrisk bypass. Sykepleien Forskning
  Academic article

2008

• Lango, T; Tangen, GA; Mårvik, Ronald; Ystgaard, B; Yavuz, Yunus; Kaspersen, JH. (2008) Navigation in laparoscopy - prototype research platform for improved image-guided surgery. MITAT. Minimally invasive therapy & allied technologies
  Academic article

2007

• Vedul-Kjelsås, Einar; Sandnes, Siv Anita; Dahl, Jens K; Gøtestam, K Gunnar; Strømmen, Magnus; Kulseng, Bård Eirik. (2007) EATING DISORDERS AND PSYCHOPATHOLOGICAL COMORBIDITY IN OBESITY PATIENTS. European psychiatry
  Academic article

2006

• Mårvik, Ronald; Nesbakken, Ragnhild; Langø, Thomas; Yavuz, Yunus; Bjelland, Hans Vanhauwaert; Ottermo, Maria Vatshaug. (2006) Ergonomic design criteria for a novel laparoscopic tool handle with tactile feedback. Minerva Chirurgica
  Academic literature review
• Ottermo, Maria Vatshaug; Øvstedal, Marit; Langø, Thomas; Stavdahl, Øyvind; Yavuz, Yunus; Johansen, Tor Arne. (2006) The role of tactile feedback in laparoscopic surgery. Surgical laparoscopy, endoscopy & percutaneous techniques
  Academic article
• Randeberg, Lise Lyngsnes; Winnem, Andreas Meyer; Langlois, N; Larsen, Eivind La Puebla; Lilledahl, Magnus Borstad; Haaverstad, Rune. (2006) Changes in skin properties following minor trauma. Lasers in Surgery and Medicine
  Abstract
• Myhre, Hans Olav; Mårvik, Ronald; Skogås, Jan Gunnar; Ødegård, Asbjørn; Sund, Valborg; Eggen, Johannes. (2006) Fremtidens operasjonsrom i Trondheim. Kirurgen
  Popular scientific article
• Yavuz, Yunus; Rønning, Kirsten; Bakkelund, Karin Elvenes; Lyng, Oddveig; Aadahl, Petter; Mårvik, Ronald. (2006) Hemodynamic and tissue blood flow responses to long-term pneumoperitoneum and hypercapnia in the pig. Surgical Endoscopy
  Academic article

2005

• Wollf, Arild; Hernes, Toril A. Nagelhus; Tangen, Geir Arne; Solberg, Ole Vegard; Kaspersen, Jon Harald; Langø, Thomas. (2005) Real-time endoscope and ultrasound integration in computer assisted navigated surgery. In Proceedings. Computer Assisted Radiology and Surgery
  Academic article
• Mårvik, Ronald; Yavuz, Yunus; Waage, Anne; Kjaeve, Jørn K.; Bergamaschi, Roberto. (2005) Clinical evaluation of a new ultrasonic Doppler instrument (SonoDoppler (R)) for the detection of blood flow during laparoscopic procedures. MITAT. Minimally invasive therapy & allied technologies
  Academic article
• Wibe, Arne; Svinsås, M; Myrvold, Helge Elliot; Mårvik, Ronald; Endreseth, Birger Henning. (2005) Postoperative morbidity and recurrence after local excision of rectal adenomas and rectal cancer by transanal endoscopic microsurgery. Diseases of the Colon & Rectum
  Academic article
• Mårvik, Ronald; Langø, Thomas; Tangen, Geir Arne; Lindseth, Frank; Yavuz, Yunus; Hernes, Toril A. Nagelhus. (2005) Image guided Laparoscopic surgery - Review and current status. Minerva Chirurgica
  Academic article
• Mårvik, R; Myrvold, Helge Elliot; Kulseng, Bård Eirik; Johnsen, G. (2005) Lapraskopisk gastrisk bypass ved sykelig overvekt. De Norske Kirurgiske Foreninger. Vitenskapelige forhandlinger 81. Høstmøtet, Oslo 2005. Norske Kirurgiske Foreninger
  Abstract

2003

• Skogås, JG; Mårvik, Ronald. (2003) Measures taken to reduce damage and repair costs of rigid endoscopes during their handling and processing in surgical practice. MITAT. Minimally invasive therapy & allied technologies
  Academic article
• Bergamaschi, R.; Yavuz, Y.; Mårvik, Ronald. (2003) Laparoscopic bowel resection: a comparison of three ultrasonically activated devices. Journal of the Society of Laparoendoscopic Surgeons
  Academic article
• Yavuz, Y.; Rønning, K.; Lyng, Oddveig; Grønbech, Jon Erik; Mårvik, Ronald. (2003) Effect of carbon dioxide pneumoperitoneum on tissue blood flow in the peritoneum, rectus abdominis, and diaphragm muscles. Surgical Endoscopy
  Academic article
• Sjolie, E; Lango, T; Ystgaard, Brynjulf; Tangen, Geir Arne; Hernes, TA Nagelhus; Mårvik, Ronald. (2003) 3D ultrasound-based navigation for radiofrequency thermal ablation in the treatment of liver malignancies. Surgical Endoscopy
  Academic article
• Aanestad, Margunn; Edvin, Bjørn; Mårvik, Ronald. (2003) Medical Image Quality as a Socio-Technical Phenomenon. Methods of Information in Medicine
  Academic article

2002

• Bergamaschi, Roberto; Arnaud, Jean-Pierre; Mårvik, Ronald; Myrvold, Helge E. (2002) Laparoscopic Antiperistaltic Versus Isoperistaltic Gastrojejunostomy for Palliation of Gastric Outlet Obstruction in Advanced Cance. Surgical laparoscopy, endoscopy & percutaneous techniques
  Academic article

2001

• Bergamaschi, Roberto; Mårvik, R. (2001) Laparascopic intracorporeal bowel resection with ultrasound vs. electrosurgical dissection. Journal of the Society of Laparoendoscopic Surgeons
  Academic article
• Yavuz, Y.; Bergamaschi, R.; Mårvik, Ronald. (2001) A comparison of three ultrasound activated devices. Journal of the Society of Laparoendoscopic Surgeons
  Academic article
• Bergamaschi, R; Mårvik, Ronald. (2001) Laparoscopic Intracorporeal Bowel Resection with Ultrasound versus Electrosurgical Dissection. Journal of the Society of Laparoendoscopic Surgeons
  Academic article
• Bergamaschi, R.; Mårvik, Ronald; Myrvold, Helge Elliot; Arnaud, JP.. (2001) Laparoscopic gastrojejunostomy fkor palliation of malignant gastric outlet obstruction. Surgical laparoscopy, endoscopy & percutaneous techniques
  Academic article
• Yavuz, Y.; Rønning, K.; Lyng, Oddveig; Mårvik, Ronald. (2001) Effect of increased intraabdominal pressure on cardiac output and tissue blood flow assessed by color-labeled microspheres in the pig. Surgical Endoscopy
  Academic article
• Aanestad, Margunn; Edvin, Bjørn; Mårvik, Ronald. (2001) Medical Image Quality as a Sociotechnical Phenomenon.
  Academic chapter/article/Conference paper

2000

• Yavuz, Y; Mårvik, R; Grønbech, JE. (2000) The Effect of Increased Intraabdominal Pressure on Tissue Blood Flow in the Pig. Surgical Endoscopy. Ultrasound and Interventional Techniques
  Academic article
• Yavuz, Y; Grønbech, JE; Mårvik, R. (2000) Exposure Increases the Blood Flow in the Parietal Peritoneum. Surgical Endoscopy. Ultrasound and Interventional Techniques
  Academic article
• Waldum, Helge; Mårvik, Ronald; Grønbech, Jon Erik; Sandvik, AK; Aase, Steinar. (2000) Oxyntic lesions may be provoked in the rat both by the process of acid secretion and also by gastric acidity. Alimentary Pharmacology and Therapeutics
  Academic article

1999

• Bergamaschi, Roberto; Tuech, JJ; Cervi, C; Walsøe, H; Mårvik, R; Boyet, J. (1999) Endoscopic retrograde cholangiography prior to laparoscopic cholecystectomy for ductal and gallbladder stones. American Journal of Surgery
  Academic article
• Bergamaschi, Roberto; Mårvik, R; Johnsen, G; Thoresen, JET; Ystgaard, B; Myrvold, HE. (1999) Open vs laparoscopic repair of perforated peptic ulcer. Surgical Endoscopy
  Academic article
• Bergamaschi, Roberto; Mårvik, R; Altomare, DF; Arnaud, JP. (1999) Laparoscopic left colon resection and colorectal anastomosis: a totally intracorporeal approach. Tech Coloproctol
  Academic article
• Myrvold, Helge Elliot; Mårvik, Ronald; Johnsen, Gjermund; Thoresen, Jan Eirik; Ystgaard, Brynjulf. (1999) Open vs laparoscopic repair of perforated peptic ulcer. Surgical Endoscopy. Ultrasound and Interventional Techniques
  Academic article

1998

• Mårvik, R; Bergamaschi, Roberto. (1998) Open vs laparoscopic repair of perforated peptic ulcer.
  Academic chapter/article/Conference paper
• Sandvik, AK; Mårvik, Ronald; Dimaline, Rodney; Waldum, Helge. (1998) Carbachol stimulation of gastric acid secretion and its effect on the parietal cell. British Journal of Surgery
  Academic article
• Bergamaschi, Roberto; Myrvold, Helge Elliot; Mårvik, Ronald; Ystgaard, Brynjulf. (1998) Open versus laparoscopic gastrojejunostomy for pallation in advanced pancreatic cancer. Surgical Laparoscopy, Endoscopy and Percutaneous Techniques
  Academic article
• Bergamaschi, Roberto; Mårvik, R; Thoresen, JET; Ystgaard, B; Johnsen, G; Myrvold, HE. (1998) Open versus laparoscopic gastrojejunostomy for palliation in advanced pancreatic cancer. Surgical Laparoscopy, Endoscopy and Percutaneous Techniques
  Academic article
• Bergamaschi, Roberto; Haugstvedt, Trond; Mårvik, R. (1998) Facilitating intracorporeal colorectal anastomoses. Journal of the Society of Laparoendoscopic Surgeons
  Academic article

1997

• Wasmuth, Hans H.; Bergamaschi, Roberto; Alstad, Berit; Mårvik, Ronald; Myrvold, Helge Elliot. (1997) Laparoskopisk sigmoidostomi. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Mårvik, Ronald; Sandvik, AK; Waldum, Helge. (1997) Gastrin stimulates histamine release from the isolated pig stomach. Scandinavian Journal of Gastroenterology
  Academic article
• Mårvik, Ronald; Sandvik, AK; Waldum, Helge. (1997) Evaluation of biologic gastrin activity of compound CI-988 in the isolated, vascularly perfused rat stomach. Scandinavian Journal of Gastroenterology
  Academic article
• Wasmuth, HH; Bergamaschi, Roberto; Alstad, B; Myrvold, HE; Mårvik, R. (1997) Laparoskopisk sigmoideostomi. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article

1994

• Trondsen, E; Ruud, TE; Nilsen, BH; Mårvik, R; Myrvold, HE; Viste, Asgaut. (1994) Complications during the introduction of laparoscopic cholecystectomy in Norway. European Journal of Surgery
  Academic article