• Disc Prosthesis
    • Øivind Gjertsen
    • Øivind Gjertsen: Influence Statistics

      Øivind Gjertsen

      Øivind Gjertsen

      Dept. of Radiology and Nuclear Medicine, Oslo University Hospital - Rikshospitalet, Oslo, Norway | Department of Radiology and Nuclear Medicine (Ø.G., B.N. R.S., G.R.), Oslo ...

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      Øivind Gjertsen:Expert Impact

      Concepts for whichØivind Gjertsenhas direct influence:Disc prosthesis,Mri findings,Degenerative disc,Multidisciplinary rehabilitation,Multifidus muscles,Lumbar disc prosthesis,Aneurysm morphology,Administration protocols.

      Øivind Gjertsen:KOL impact

      Concepts related to the work of other authors for whichfor which Øivind Gjertsen has influence:Anastomotic leakage,Rectal cancer,Anterior resection,Disc degeneration,Intracranial aneurysms,Aneurysm rupture,Transverse ligament.

      KOL Resume for Øivind Gjertsen


      Dept. of Radiology and Nuclear Medicine, Oslo University Hospital - Rikshospitalet, Oslo, Norway


      Department of Radiology and Nuclear Medicine (Ø.G., B.N. R.S., G.R.), Oslo University Hospital, Rikshospitalet, Oslo, Norway


      From the UiT The Arctic University of Norway, Tromsø (T.Ø.S., J.G.I.); University Hospital of Northern Norway, Tromsø (L.-H.J., J.G.I.); Oslo University Hospital Rikshospitalet, Norway (Ø.G., A.S.); and Institute of Clinical Medicine, University of Oslo, Norway (A.S.).

      Department of Radiology and Nuclearmedicine, Oslo University Hospital Rikshospitalet, Postbox 4950, 0424, Nydalen, Oslo, Norway


      Department of Radiology Oslo University Hospital Oslo Norway


      Section of Neuroradiology, Oslo University Hospital, Oslo, Norway


      Department of Neuroradiology, Oslo University Hospital, Oslo, Norway


      Department of Neuroradiology, Ullevål University Hospital, Oslo, Norway


      Radiology, Aker University Hospital, Oslo, Norway

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      Sample of concepts for which Øivind Gjertsen is among the top experts in the world.
      Concept World rank
      membranes craniocervical junction #5
      membranes craniocervical #5
      gadobutrol iodixanol #6
      intrathecal mri #6
      gadovisttm #6
      protocols intrathecal #6
      gadobutrol safety study #6
      iodixanol occurrence #6
      offlabel intrathecal #6
      05 mmol iodixanol #6
      intrathecal gadobutrol dose #6
      postrupture morphology #6
      dose 025 mmol #8
      label organometallic #8
      label intrathecal #9
      intrathecal administration gadobutrol #9
      intrathecal gadobutrol #9
      lbp degenerative disc #10
      tdr surgery surgery #10
      tdr surgery outcomes #10
      multifidus muscles outcomes #10
      muscles tdr #10
      outcomes 2year followup #10
      pabak values comparison #11
      comparison adjacent prosthesis #11
      increasing l4 #11
      adjacent prosthesis agreement #11
      pabak modic #11
      pabak l5 s1 #11
      modic disc findings #11
      modic l3 l4 #11
      regress modic #11
      modic pabak #11
      l5 s1 comparison #11
      gadobutrol safety #11
      l4 l5 modic #11
      impact adjacent prosthesis #11
      regress pabak #11
      adjacent prosthesis impact #11
      impact pabak #11
      impact pabak values #11
      image evaluation method #11
      increasing l5 #11
      2year followup ald #12
      fat infiltration mri #12
      rehabilitation ald #12
      ald frequencies #12
      hiz l5 #13
      odi 170 #13
      hiz l5 s1 #13
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      Prominent publications by Øivind Gjertsen

      KOL-Index: 10855

      BackgroundEvidence is lacking on whether fat infiltration in the multifidus muscles affects outcomes after total disc replacement (TDR) surgery and if it develops after surgery. The aims of this study were 1) to investigate whether pre-treatment multifidus muscle fat infiltration predicts outcome 2 years after treatment with TDR surgery or multidisciplinary rehabilitation, and 2) to compare changes in multifidus muscle fat infiltration from pre-treatment to 2-year follow-up between the ...

      Known for Multifidus Muscle | Fat Infiltration | Year Follow | Patients Lbp | Chronic Low
      KOL-Index: 8628

      INTRODUCTION: Limited reliability data exist for localised magnetic resonance imaging (MRI) findings relevant to planning of treatment with lumbar disc prosthesis and later outcomes. We assessed the reliability of such findings in chronic low back pain patients who were accepted candidates for disc prosthesis.

      METHODS: On pretreatment MRI of 170 patients (mean age 41 years; 88 women), three experienced radiologists independently rated Modic changes, disc findings and facet arthropathy at ...

      Known for Disc Prosthesis | Mri Findings | L4 L5 | Facet Arthropathy | Resonance Imaging
      KOL-Index: 8303

      BACKGROUND AND PURPOSE: Using postrupture morphology to predict rupture risk of an intracranial aneurysm may be inaccurate because of possible morphological changes at or around the time of rupture. The present study aims at comparing morphology from angiograms obtained prior to and just after rupture and to evaluate whether postrupture morphology is an adequate surrogate for rupture risk.

      METHODS: Case series of 29 aneurysms from a nationwide retrospective data collection. Two ...

      Known for Aneurysm Morphology | Rupture Risk | Humans Intracranial | Cerebral Angiography | Factors Morphological
      KOL-Index: 7964

      ObjectiveTo examine whether combined magnetic resonance imaging (MRI) findings are related to the degree of disability and low back pain (LBP) in candidates for lumbar disc prosthesis surgery.Materials and methodsThis cross-sectional study included 170 disc prosthesis candidates (mean age 41 years; 88 women) with chronic non-radicular LBP and localized disc degeneration. Experienced radiologists rated Modic changes and disc findings at L4-S1 on pre-treatment MRIs. An MRI total score ...

      Known for Mri Findings | Lumbar Disc | L5 S1 | Pain Lbp | Modic Type
      KOL-Index: 7035

      BACKGROUND: The pathogenesis and imaging findings in whiplash-associated injury (WAD) are poorly understood and remain debatable.

      PURPOSE: To assess the ligaments and membranes in the craniocervical junction with magnetic resonance imaging (MRI) in patients with WAD and to compare them with healthy control subjects.

      MATERIAL AND METHODS: Twenty-eight patients with WAD were selected at random from a total number of 180 examined with MRI using 2-mm proton density (PD)-weighted images in ...

      Known for Magnetic Resonance Imaging | Patients Control Subjects | Craniocervical Junction | Ligaments Membranes | Signal Intensity
      KOL-Index: 6585

      INTRODUCTION: Multiple object tracking (MOT) is a powerful paradigm for measuring sustained attention. Although previous fMRI studies have delineated the brain activation patterns associated with tracking and documented reduced tracking performance in aging, age-related effects on brain activation during MOT have not been characterized. In particular, it is unclear if the task-related activation of different brain networks is correlated, and also if this coordination between activations ...

      Known for Brain Network | Multiple Object | Age‐related Differences | Younger Adults | Agerelated Alterations
      KOL-Index: 6339

      OBJECTIVE: Anastomotic leakage is a potentially serious complication of low anterior resection which may be accompanied by clinical symptoms (clinical leak) or may be silent (subclinical leak). In this study the true incidence of the complication was evaluated, and the diagnostic accuracy of clinical symptoms, conventional rectal radiography (CRR) and computed tomography (CT) was compared.

      PATIENTS AND METHODS: Fifty-six consecutive patients were included in a prospective trial. Clinical ...

      Known for Anastomotic Leak | Mesorectal Excision | Rectal Cancer | Computed Tomography | Clinical Assessment
      KOL-Index: 5554

      STUDY DESIGN: Randomized clinical trial with 2-year follow-up.

      OBJECTIVE: To assess the development of adjacent level degeneration (ALD) and index level facet arthropathy (FA) in patients treated with disc prosthesis compared with patients treated with rehabilitation.

      SUMMARY OF BACKGROUND DATA: There is controversy about the natural history of disc degeneration and the development of ALD and FA in patients who undergo disc prosthesis surgery.

      METHODS: The study included 116 patients ...

      Known for Disc Prosthesis | Facet Arthropathy | Chronic Low | Adjacent Level | Pain Lumbar
      KOL-Index: 4891

      BACKGROUND AND PURPOSE: Intrathecal contrast-enhanced glymphatic MR imaging has shown promise in assessing glymphatic function in patients with dementia. The purpose of this study was to determine the safety profile and feasibility of this new MR imaging technique.

      MATERIALS AND METHODS: A prospective safety and feasibility study was performed in 100 consecutive patients (58 women and 42 men, 51 ± 19 years of age) undergoing glymphatic MR imaging from September 2015 to August 2018. ...

      Known for Gadobutrol Iodixanol | Intrathecal Administration | Safety Profile | Glymphatic Function | 10 Mmol
      KOL-Index: 3452

      ObjectivesTo assess the reliability of change in lumbar magnetic resonance imaging (MRI) findings evaluated retrospectively by direct comparison of images and by non-comparison.Materials and methodsPre-treatment and 2-year follow-up MRI was performed in 126 patients randomized to disc prosthesis surgery or non-surgical treatment. Two experienced radiologists independently evaluated progress and regress for Modic changes, disc findings, and facet arthropathy (FA) at L3/L4, L4/L5, and ...

      Known for Disc Prosthesis | Interobserver Agreement | Mri Findings | Lumbar Magnetic | Longitudinal Studies
      KOL-Index: 2874

      PurposeMagnetic resonance imaging (MRI) contrast agents have been used off-label for diagnosis of cerebrospinal fluid (CSF) leaks and lately also for assessment of the glymphatic system and meningeal lymphatic drainage. The purpose of this study was to further evaluate the short- and long-term safety profile of intrathecal MRI contrast agents.MethodsIn this prospective study, we compared the safety profile of different administration protocols of intrathecal gadobutrol (GadovistTM; 1.0 ...

      Known for Intrathecal Gadobutrol | Magnetic Resonance | 05 Mmol | Mri Contrast | Organometallic Compounds

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      Dept. of Radiology and Nuclear Medicine, Oslo University Hospital - Rikshospitalet, Oslo, Norway | Department of Radiology and Nuclear Medicine (Ø.G., B.N. R.S., G.R.), Oslo University Hospital, Rikshospitalet, Oslo, Norway | From the UiT The Arctic

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