
Geir Ringstad
- Consultant Neuroradiologist; MD, PhD
- +47 23 07 15 73
Publications 2021
Clinical application of intrathecal gadobutrol for assessment of cerebrospinal fluid tracer clearance to blood
JCI Insight (in press)
DOI 10.1172/jci.insight.147063, PubMed 33822769
Direction and magnitude of cerebrospinal fluid flow vary substantially across central nervous system diseases
Fluids Barriers CNS, 18 (1), 16
DOI 10.1186/s12987-021-00251-6, PubMed 33794929
Sleep deprivation impairs molecular clearance from the human brain
Brain, 144 (3), 863-874
DOI 10.1093/brain/awaa443, PubMed 33829232
Safety of Intrathecal Gadolinium-based Contrast Agents and Benefit versus Risk
Radiology, 299 (1), E223-E224
DOI 10.1148/radiol.2021203351, PubMed 33591893
Publications 2020
<b>Magnetic resonance imaging biomarkers of cerebrospinal fluid tracer dynamics</b> <b>in idiopathic normal pressure hydrocephalus</b>
Brain Commun, 2 (2), fcaa187
DOI 10.1093/braincomms/fcaa187, PubMed 33381757
Off-label intrathecal use of gadobutrol: safety study and comparison of administration protocols
Neuroradiology, 63 (1), 51-61
DOI 10.1007/s00234-020-02519-4, PubMed 32803338
In Vivo Evidence for Impaired Glymphatic Function in the Visual Pathway of Patients With Normal Pressure Hydrocephalus
Invest Ophthalmol Vis Sci, 61 (13), 24
DOI 10.1167/iovs.61.13.24, PubMed 33201186
FSH Levels Are Related to E-cadherin Expression and Subcellular Location in Nonfunctioning Pituitary Tumors
J Clin Endocrinol Metab, 105 (8)
DOI 10.1210/clinem/dgaa281, PubMed 32421791
Surgery for Brainstem Cavernous Malformations: Association between Preoperative Grade and Postoperative Quality of Life
Oper Neurosurg (Hagerstown), 18 (6), 590-598
DOI 10.1093/ons/opz337, PubMed 31768544
In vivo assessment of cerebrospinal fluid efflux to nasal mucosa in humans
Sci Rep, 10 (1), 14974
DOI 10.1038/s41598-020-72031-5, PubMed 32917953
Glymphatic MRI
Tidsskr. Nor. Laegeforen., 140 (1), 69
Glymphatic MRI
Tidsskr Nor Laegeforen, 140 (1)
DOI 10.4045/tidsskr.19.0651, PubMed 31948208
Cerebrospinal fluid tracer efflux to parasagittal dura in humans
Nat Commun, 11 (1), 354
DOI 10.1038/s41467-019-14195-x, PubMed 31953399
Apparent diffusion coefficient estimates based on 24 hours tracer movement support glymphatic transport in human cerebral cortex
Sci Rep, 10 (1), 9176
DOI 10.1038/s41598-020-66042-5, PubMed 32514105
Publications 2019
Intrathecal Use of Gadobutrol for Glymphatic MR Imaging: Prospective Safety Study of 100 Patients
AJNR Am J Neuroradiol, 40 (8), 1257-1264
DOI 10.3174/ajnr.A6136, PubMed 31320462
In Vivo Imaging of Molecular Clearance From Human Entorhinal Cortex: A Possible Method for Preclinical Testing of Dementia
Gerontol Geriatr Med, 5, 2333721419889739
DOI 10.1177/2333721419889739, PubMed 31819895
Delayed clearance of cerebrospinal fluid tracer from choroid plexus in idiopathic normal pressure hydrocephalus
J Cereb Blood Flow Metab, 40 (9), 1849-1858
DOI 10.1177/0271678X19874790, PubMed 31495299
Chiari malformation type 1- diagnostics and treatment
Tidsskr. Nor. Laegeforen., 139 (10), 931-935
Chiari malformation type 1 – diagnosis and treatment
Tidsskr Nor Laegeforen, 139 (10)
DOI 10.4045/tidsskr.18.0455, PubMed 31238671
The Human Visual Pathway Communicates Directly With the Subarachnoid Space
Invest Ophthalmol Vis Sci, 60 (7), 2773-2780
DOI 10.1167/iovs.19-26997, PubMed 31247084
Respiratory influence on cerebrospinal fluid flow - a computational study based on long-term intracranial pressure measurements
Sci Rep, 9 (1), 9732
DOI 10.1038/s41598-019-46055-5, PubMed 31278278
Publications 2018
Aggressive melanoma in an infant with congenital melanocytic nevus syndrome and multiple, NRAS and BRAF mutation-negative nodules
Pediatr Dermatol, 35 (5), e281-e285
DOI 10.1111/pde.13595, PubMed 29999207
Delayed clearance of cerebrospinal fluid tracer from entorhinal cortex in idiopathic normal pressure hydrocephalus: A glymphatic magnetic resonance imaging study
J Cereb Blood Flow Metab, 39 (7), 1355-1368
DOI 10.1177/0271678X18760974, PubMed 29485341
"Bucket" cerebrospinal fluid bulk flow: when the terrain disagrees with the map
Acta Neurochir (Wien), 161 (2), 259-261
DOI 10.1007/s00701-018-3775-6, PubMed 30560378
Magnetic resonance imaging provides evidence of glymphatic drainage from human brain to cervical lymph nodes
Sci Rep, 8 (1), 7194
DOI 10.1038/s41598-018-25666-4, PubMed 29740121
Cerebrospinal fluid volumetric net flow rate and direction in idiopathic normal pressure hydrocephalus
Neuroimage Clin, 20, 731-741
DOI 10.1016/j.nicl.2018.09.006, PubMed 30238917
Magnitude and direction of aqueductal cerebrospinal fluid flow: large variations in patients with intracranial aneurysms with or without a previous subarachnoid hemorrhage
Acta Neurochir (Wien), 161 (2), 247-256
DOI 10.1007/s00701-018-3730-6, PubMed 30443816
Are volume measurements of non-functioning pituitary adenomas reliable?
Endocrine, 63 (1), 171-176
DOI 10.1007/s12020-018-1752-8, PubMed 30259294
Brain-wide glymphatic enhancement and clearance in humans assessed with MRI
JCI Insight, 3 (13)
DOI 10.1172/jci.insight.121537, PubMed 29997300
Publications 2017
Direct numerical simulation of transitional hydrodynamics of the cerebrospinal fluid in Chiari I malformation: The role of cranio-vertebral junction
Int J Numer Method Biomed Eng, 33 (9)
DOI 10.1002/cnm.2853, PubMed 27863152
Early postoperative growth in non-functioning pituitary adenomas; A tool to tailor safe follow-up
Endocrine, 57 (1), 35-45
DOI 10.1007/s12020-017-1314-5, PubMed 28516382
Non-invasive assessment of pulsatile intracranial pressure with phase-contrast magnetic resonance imaging
PLoS One, 12 (11), e0188896
DOI 10.1371/journal.pone.0188896, PubMed 29190788
Glymphatic MRI in idiopathic normal pressure hydrocephalus
Brain, 140 (10), 2691-2705
DOI 10.1093/brain/awx191, PubMed 28969373
Publications 2016
Increased pulsatile intracranial pressure in patients with symptomatic pineal cysts and magnetic resonance imaging biomarkers indicative of central venous hypertension
J Neurol Sci, 367, 247-55
DOI 10.1016/j.jns.2016.06.028, PubMed 27423599
Results of surgery in symptomatic non-hydrocephalic pineal cysts: role of magnetic resonance imaging biomarkers indicative of central venous hypertension
Acta Neurochir (Wien), 159 (2), 349-361
DOI 10.1007/s00701-016-3029-4, PubMed 27878615
[Idiopathic intracranial hypertension as a cause of headache]
Tidsskr Nor Laegeforen, 136 (22), 1895-1898
DOI 10.4045/tidsskr.16.0222, PubMed 27929555
Radiological imaging in acute ischaemic stroke
Eur J Neurol, 23 Suppl 1, 8-17
DOI 10.1111/ene.12849, PubMed 26563093
Publications 2015
MRI with intrathecal MRI gadolinium contrast medium administration: a possible method to assess glymphatic function in human brain
Acta Radiol Open, 4 (11), 2058460115609635
DOI 10.1177/2058460115609635, PubMed 26634147
Quantitative analyses of T2-weighted MRI as a potential marker for response to somatostatin analogs in newly diagnosed acromegaly
Endocrine, 52 (2), 333-43
DOI 10.1007/s12020-015-0766-8, PubMed 26475495
MRI T2 characteristics in somatotroph adenomas following somatostatin analog treatment in acromegaly
Endocrine, 53 (1), 327-30
DOI 10.1007/s12020-015-0816-2, PubMed 26615593
Phase-contrast magnetic resonance imaging reveals net retrograde aqueductal flow in idiopathic normal pressure hydrocephalus
J Neurosurg, 124 (6), 1850-7
DOI 10.3171/2015.6.JNS15496, PubMed 26636385
Aqueductal Stroke Volume: Comparisons with Intracranial Pressure Scores in Idiopathic Normal Pressure Hydrocephalus
AJNR Am J Neuroradiol, 36 (9), 1623-30
DOI 10.3174/ajnr.A4340, PubMed 25977480
Reply: To PMID 25977480
AJNR Am J Neuroradiol, 36 (9), 1633-4
DOI 10.3174/ajnr.A4488, PubMed 26251437
Publications 2014
Severe macrophage activation syndrome and central nervous system involvement in juvenile dermatomyositis
Scand J Rheumatol, 43 (2), 171-3
DOI 10.3109/03009742.2013.863968, PubMed 24588361
[Woman with recurrent uveitis and neurological symptoms]
Tidsskr Nor Laegeforen, 134 (12-13), 1245-8
DOI 10.4045/tidsskr.13.0433, PubMed 24989204
Publications 2013
Attenuated RORC expression in the presence of EMT progression in somatotroph adenomas following treatment with somatostatin analogs is associated with poor clinical recovery
PLoS One, 8 (6), e66927
DOI 10.1371/journal.pone.0066927, PubMed 23825587
Epithelial splicing regulator protein 1 and alternative splicing in somatotroph adenomas
Endocrinology, 154 (9), 3331-43
DOI 10.1210/en.2013-1051, PubMed 23825128
Publications 2012
Intensity of pituitary adenoma on T2-weighted magnetic resonance imaging predicts the response to octreotide treatment in newly diagnosed acromegaly
Clin Endocrinol (Oxf), 77 (1), 72-8
DOI 10.1111/j.1365-2265.2011.04286.x, PubMed 22066905
An unusual case of the syndrome of cervical rib with subclavian artery thrombosis and cerebellar and cerebral infarctions
BMC Neurol, 12, 48
DOI 10.1186/1471-2377-12-48, PubMed 22741548
Publications 2010
An autostereoscopic 3D display can improve visualization of 3D models from intracranial MR angiography
Int J Comput Assist Radiol Surg, 5 (5), 549-54
DOI 10.1007/s11548-010-0509-5, PubMed 20652646
Publications 2007
Periodic abducens nerve palsy in adults caused by neurovascular compression
J Neurol Neurosurg Psychiatry, 79 (1), 100-2
DOI 10.1136/jnnp.2007.124321, PubMed 17717022
Publications 2006
[CT colonography: a new method for detecting colorectal cancer and polyps]
Tidsskr Nor Laegeforen, 126 (11), 1470-3
PubMed 16732340
Publications 2003
Bonitetsutvikling og avvik mellom plan og kontroll
[Forfatterne], Ås, 47 bl.
BIBSYS 040859177