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Items: 1 to 50 of 235

1.

The voxel-wise analysis of false negative fMRI activation in regions of provoked impaired cerebrovascular reactivity.

van Niftrik CHB, Piccirelli M, Muscas G, Sebök M, Fisher JA, Bozinov O, Stippich C, Valavanis A, Regli L, Fierstra J.

PLoS One. 2019 May 6;14(5):e0215294. doi: 10.1371/journal.pone.0215294. eCollection 2019.

2.

Safety and efficacy of balloon angioplasty in symptomatic intracranial stenosis: A systematic review and meta-analysis.

Kadooka K, Hagenbuch N, Anagnostakou V, Valavanis A, Kulcsár Z.

J Neuroradiol. 2019 Mar 9. pii: S0150-9861(18)30379-1. doi: 10.1016/j.neurad.2019.02.007. [Epub ahead of print]

PMID:
30862462
3.

Feasibility and safety of intraoperative BOLD functional MRI cerebrovascular reactivity to evaluate extracranial-to-intracranial bypass efficacy.

Muscas G, Bas van Niftrik CH, Fierstra J, Piccirelli M, Sebök M, Burkhardt JK, Valavanis A, Pangalu A, Regli L, Bozinov O.

Neurosurg Focus. 2019 Feb 1;46(2):E7. doi: 10.3171/2018.11.FOCUS18502.

PMID:
30717072
4.

Gas spectroscopy through multimode self-mixing in a double-metal terahertz quantum cascade laser.

Han YJ, Partington J, Chhantyal-Pun R, Henry M, Auriacombe O, Rawlings T, Li LH, Keeley J, Oldfield M, Brewster N, Dong R, Dean P, Davies AG, Ellison BN, Linfield EH, Valavanis A.

Opt Lett. 2018 Dec 15;43(24):5933-5936. doi: 10.1364/OL.43.005933.

PMID:
30547973
5.

Author Correction: Ultrafast switch-on dynamics of frequency-tuneable semiconductor lasers.

Kundu I, Wang F, Qi X, Nong H, Dean P, Freeman JR, Valavanis A, Agnew G, Grier AT, Taimre T, Li L, Indjin D, Mangeney J, Tignon J, Dhillon SS, Rakić AD, Cunningham JE, Linfield EH, Davies AG.

Nat Commun. 2018 Nov 30;9(1):5181. doi: 10.1038/s41467-018-07629-5.

6.

Post-operative cardiovascular complications and time to recurrence in meningioma patients treated with versus without pre-operative embolization: a retrospective cohort study of 741 patients.

Wirsching HG, Richter JK, Sahm F, Morel C, Krayenbuehl N, Rushing EJ, von Deimling A, Valavanis A, Weller M.

J Neurooncol. 2018 Dec;140(3):659-667. doi: 10.1007/s11060-018-2996-0. Epub 2018 Sep 8.

PMID:
30196368
7.

BOLD cerebrovascular reactivity as a novel marker for crossed cerebellar diaschisis.

Sebök M, van Niftrik CHB, Piccirelli M, Bozinov O, Wegener S, Esposito G, Pangalu A, Valavanis A, Buck A, Luft AR, Regli L, Fierstra J.

Neurology. 2018 Oct 2;91(14):e1328-e1337. doi: 10.1212/WNL.0000000000006287. Epub 2018 Sep 5.

PMID:
30185447
8.

Ultrafast switch-on dynamics of frequency-tuneable semiconductor lasers.

Kundu I, Wang F, Qi X, Nong H, Dean P, Freeman JR, Valavanis A, Agnew G, Grier AT, Taimre T, Li L, Indjin D, Mangeney J, Tignon J, Dhillon SS, Rakić AD, Cunningham JE, Linfield EH, Davies AG.

Nat Commun. 2018 Aug 6;9(1):3076. doi: 10.1038/s41467-018-05601-x. Erratum in: Nat Commun. 2018 Nov 30;9(1):5181.

9.

The Swiss Federation of Clinical Neuro-Societies and Young Clinical Neuroscientists Network.

Sokolov AA, Schaller K, Valavanis A, Bassetti CL.

Lancet Neurol. 2018 Jul;17(7):582. doi: 10.1016/S1474-4422(18)30200-X. No abstract available.

PMID:
29914705
10.

Gas spectroscopy with integrated frequency monitoring through self-mixing in a terahertz quantum-cascade laser.

Chhantyal-Pun R, Valavanis A, Keeley JT, Rubino P, Kundu I, Han Y, Dean P, Li L, Davies AG, Linfield EH.

Opt Lett. 2018 May 15;43(10):2225-2228. doi: 10.1364/OL.43.002225.

PMID:
29762559
11.

Silver-based surface plasmon waveguide for terahertz quantum cascade lasers.

Han YJ, Li LH, Zhu J, Valavanis A, Freeman JR, Chen L, Rosamond M, Dean P, Davies AG, Linfield EH.

Opt Express. 2018 Feb 19;26(4):3814-3827. doi: 10.1364/OE.26.003814.

PMID:
29475360
12.

Cardiac-gated intravoxel incoherent motion diffusion-weighted magnetic resonance imaging for the investigation of intracranial cerebrospinal fluid dynamics in the lateral ventricle: a feasibility study.

Surer E, Rossi C, Becker AS, Finkenstaedt T, Wurnig MC, Valavanis A, Winklhofer S.

Neuroradiology. 2018 Apr;60(4):413-419. doi: 10.1007/s00234-018-1995-3. Epub 2018 Feb 22.

PMID:
29470603
13.

Impact of baseline CO2 on Blood-Oxygenation-Level-Dependent MRI measurements of cerebrovascular reactivity and task-evoked signal activation.

van Niftrik CHB, Piccirelli M, Bozinov O, Maldaner N, Strittmatter C, Pangalu A, Valavanis A, Regli L, Fierstra J.

Magn Reson Imaging. 2018 Jun;49:123-130. doi: 10.1016/j.mri.2018.02.002. Epub 2018 Feb 13.

PMID:
29447850
14.

Staging Hemodynamic Failure With Blood Oxygen-Level-Dependent Functional Magnetic Resonance Imaging Cerebrovascular Reactivity: A Comparison Versus Gold Standard (15O-)H2O-Positron Emission Tomography.

Fierstra J, van Niftrik C, Warnock G, Wegener S, Piccirelli M, Pangalu A, Esposito G, Valavanis A, Buck A, Luft A, Bozinov O, Regli L.

Stroke. 2018 Mar;49(3):621-629. doi: 10.1161/STROKEAHA.117.020010. Epub 2018 Jan 25.

15.

Combining monoenergetic extrapolations from dual-energy CT with iterative reconstructions: reduction of coil and clip artifacts from intracranial aneurysm therapy.

Winklhofer S, Hinzpeter R, Stocker D, Baltsavias G, Michels L, Burkhardt JK, Regli L, Valavanis A, Alkadhi H.

Neuroradiology. 2018 Mar;60(3):281-291. doi: 10.1007/s00234-018-1981-9. Epub 2018 Jan 22.

PMID:
29356855
16.

Diffuse gliomas exhibit whole brain impaired cerebrovascular reactivity.

Fierstra J, van Niftrik C, Piccirelli M, Bozinov O, Pangalu A, Krayenbühl N, Valavanis A, Weller M, Regli L.

Magn Reson Imaging. 2018 Jan;45:78-83. doi: 10.1016/j.mri.2017.09.017. Epub 2017 Oct 3.

17.

Iterative analysis of cerebrovascular reactivity dynamic response by temporal decomposition.

van Niftrik CHB, Piccirelli M, Bozinov O, Pangalu A, Fisher JA, Valavanis A, Luft AR, Weller M, Regli L, Fierstra J.

Brain Behav. 2017 Jul 26;7(9):e00705. doi: 10.1002/brb3.705. eCollection 2017 Sep.

18.

Dual-Energy Computed Tomography in Stroke Imaging: Technical and Clinical Considerations of Virtual Noncontrast Images for Detection of the Hyperdense Artery Sign.

Winklhofer S, Vittoria De Martini I, Nern C, Blume I, Wegener S, Pangalu A, Valavanis A, Alkadhi H, Guggenberger R.

J Comput Assist Tomogr. 2017 Nov/Dec;41(6):843-848. doi: 10.1097/RCT.0000000000000638.

19.

Modified Dual-Energy Algorithm for Calcified Plaque Removal: Evaluation in Carotid Computed Tomography Angiography and Comparison With Digital Subtraction Angiography.

Mannil M, Ramachandran J, Vittoria de Martini I, Wegener S, Schmidt B, Flohr T, Krauss B, Valavanis A, Alkadhi H, Winklhofer S.

Invest Radiol. 2017 Nov;52(11):680-685. doi: 10.1097/RLI.0000000000000391.

20.

Othmar Schubiger.

Valavanis A.

Neuroradiology. 2017 Jun;59(6):537-538. doi: 10.1007/s00234-017-1843-x. No abstract available.

PMID:
28497261
21.

Multi-spectral terahertz sensing: proposal for a coupled-cavity quantum cascade laser based optical feedback interferometer.

Qi X, Agnew G, Kundu I, Taimre T, Lim YL, Bertling K, Dean P, Grier A, Valavanis A, Linfield EH, Giles Davies A, Indjin D, Rakić AD.

Opt Express. 2017 May 1;25(9):10153-10165. doi: 10.1364/OE.25.010153.

22.

Rare Appearance, Rare Location and Unusual Patient Age : Report of Osteolytic Fibrous Dysplasia in the Temporal Bone of a 52-year-old Patient.

Pineker V, Marques Maggio E, Huber A, Pangalu A, Valavanis A, Winklhofer S.

Clin Neuroradiol. 2017 Dec;27(4):521-524. doi: 10.1007/s00062-017-0582-z. Epub 2017 Apr 21. No abstract available.

PMID:
28432392
23.

Quasi-continuous frequency tunable terahertz quantum cascade lasers with coupled cavity and integrated photonic lattice.

Kundu I, Dean P, Valavanis A, Chen L, Li L, Cunningham JE, Linfield EH, Davies AG.

Opt Express. 2017 Jan 9;25(1):486-496. doi: 10.1364/OE.25.000486.

24.

Long-term control and partial remission after initial pseudoprogression of glioblastoma by anti-PD-1 treatment with nivolumab.

Roth P, Valavanis A, Weller M.

Neuro Oncol. 2017 Mar 1;19(3):454-456. doi: 10.1093/neuonc/now265. No abstract available.

25.

Extraction-controlled terahertz frequency quantum cascade lasers with a diagonal LO-phonon extraction and injection stage.

Han YJ, Li LH, Grier A, Chen L, Valavanis A, Zhu J, Freeman JR, Isac N, Colombelli R, Dean P, Davies AG, Linfield EH.

Opt Express. 2016 Dec 12;24(25):28583-28593. doi: 10.1364/OE.24.028583.

26.

Novel cases of amyotrophic lateral sclerosis after treatment of cerebral arteriovenous malformationss.

Linnebank M, McDougall CG, Krueger S, Biskup S, Neumann M, Weller M, Valavanis A, Prudlo J.

Swiss Med Wkly. 2016 Nov 12;146:w14361. doi: 10.4414/smw.2016.14361. eCollection 2016.

27.

Origin of terminal voltage variations due to self-mixing in terahertz frequency quantum cascade lasers.

Grier A, Dean P, Valavanis A, Keeley J, Kundu I, Cooper JD, Agnew G, Taimre T, Lim YL, Bertling K, Rakić AD, Li LH, Harrison P, Linfield EH, Ikonić Z, Davies AG, Indjin D.

Opt Express. 2016 Sep 19;24(19):21948-56. doi: 10.1364/OE.24.021948.

28.

Model for a pulsed terahertz quantum cascade laser under optical feedback.

Agnew G, Grier A, Taimre T, Lim YL, Bertling K, Ikonić Z, Valavanis A, Dean P, Cooper J, Khanna SP, Lachab M, Linfield EH, Davies AG, Harrison P, Indjin D, Rakić AD.

Opt Express. 2016 Sep 5;24(18):20554-70. doi: 10.1364/OE.24.020554.

29.

The AVICH Score: A Novel Grading System to Predict Clinical Outcome in Arteriovenous Malformation-Related Intracerebral Hemorrhage.

Neidert MC, Lawton MT, Mader M, Seifert B, Valavanis A, Regli L, Bozinov O, Burkhardt JK.

World Neurosurg. 2016 Aug;92:292-297. doi: 10.1016/j.wneu.2016.04.080. Epub 2016 May 2.

PMID:
27150647
30.

Fine tuning breath-hold-based cerebrovascular reactivity analysis models.

van Niftrik CH, Piccirelli M, Bozinov O, Pangalu A, Valavanis A, Regli L, Fierstra J.

Brain Behav. 2016 Jan 25;6(2):e00426. doi: 10.1002/brb3.426. eCollection 2016 Feb.

31.

Glioblastoma in the Canton of Zurich, Switzerland revisited: 2005 to 2009.

Gramatzki D, Dehler S, Rushing EJ, Zaugg K, Hofer S, Yonekawa Y, Bertalanffy H, Valavanis A, Korol D, Rohrmann S, Pless M, Oberle J, Roth P, Ohgaki H, Weller M.

Cancer. 2016 Jul 15;122(14):2206-15. doi: 10.1002/cncr.30023. Epub 2016 Apr 18.

32.

Laser Feedback Interferometry as a Tool for Analysis of Granular Materials at Terahertz Frequencies: Towards Imaging and Identification of Plastic Explosives.

Han S, Bertling K, Dean P, Keeley J, Burnett AD, Lim YL, Khanna SP, Valavanis A, Linfield EH, Davies AG, Indjin D, Taimre T, Rakić AD.

Sensors (Basel). 2016 Mar 9;16(3). pii: E352. doi: 10.3390/s16030352.

33.

Altered intraoperative cerebrovascular reactivity in brain areas of high-grade glioma recurrence.

Fierstra J, van Niftrik B, Piccirelli M, Burkhardt JK, Pangalu A, Kocian R, Valavanis A, Weller M, Regli L, Bozinov O.

Magn Reson Imaging. 2016 Jul;34(6):803-808. doi: 10.1016/j.mri.2016.02.003. Epub 2016 Mar 8.

34.

Pituitary surgery and volumetric assessment of extent of resection: a paradigm shift in the use of intraoperative magnetic resonance imaging.

Serra C, Burkhardt JK, Esposito G, Bozinov O, Pangalu A, Valavanis A, Holzmann D, Schmid C, Regli L.

Neurosurg Focus. 2016 Mar;40(3):E17. doi: 10.3171/2015.12.FOCUS15564.

35.

Blood oxygen-level dependent functional assessment of cerebrovascular reactivity: Feasibility for intraoperative 3 Tesla MRI.

Fierstra J, Burkhardt JK, van Niftrik CH, Piccirelli M, Pangalu A, Kocian R, Neidert MC, Valavanis A, Regli L, Bozinov O.

Magn Reson Med. 2017 Feb;77(2):806-813. doi: 10.1002/mrm.26135. Epub 2016 Feb 26.

PMID:
26918794
36.

Complications of Sigmoid Sinus Transvenous Occlusion for the Endovascular Treatment of Dural Arteriovenous Shunts with Emphasis on Inner Ear Dysfunction.

Baltsavias G, Richter J, Hegemann S, Valavanis A.

World Neurosurg. 2016 Apr;88:41-8. doi: 10.1016/j.wneu.2016.01.005. Epub 2016 Jan 9.

PMID:
26780284
37.

Predicting outcome of epilepsy after meningioma resection.

Wirsching HG, Morel C, Gmür C, Neidert MC, Baumann CR, Valavanis A, Rushing EJ, Krayenbühl N, Weller M.

Neuro Oncol. 2016 Jul;18(7):1002-10. doi: 10.1093/neuonc/nov303. Epub 2015 Dec 18.

38.

Magnetic Resonance Imaging and Computed Tomography of the Brain-50 Years of Innovation, With a Focus on the Future.

Runge VM, Aoki S, Bradley WG Jr, Chang KH, Essig M, Ma L, Ross JS, Valavanis A.

Invest Radiol. 2015 Sep;50(9):551-6. doi: 10.1097/RLI.0000000000000170. Review.

39.

Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser.

Keeley J, Dean P, Valavanis A, Bertling K, Lim YL, Alhathlool R, Taimre T, Li LH, Indjin D, Rakić AD, Linfield EH, Davies AG.

Opt Lett. 2015 Mar 15;40(6):994-7. doi: 10.1364/OL.40.000994.

40.

Active phase-nulling of the self-mixing phase in a terahertz frequency quantum cascade laser.

Dean P, Keeley J, Valavanis A, Bertling K, Lim YL, Taimre T, Alhathlool R, Li LH, Indjin D, Rakić AD, Linfield EH, Davies AG.

Opt Lett. 2015 Mar 15;40(6):950-3. doi: 10.1364/OL.40.000950.

41.

Is there a role for conventional MRI and MR diffusion-weighted imaging for distinction of skull base chordoma and chondrosarcoma?

Müller U, Kubik-Huch RA, Ares C, Hug EB, Löw R, Valavanis A, Ahlhelm FJ.

Acta Radiol. 2016 Feb;57(2):225-32. doi: 10.1177/0284185115574156. Epub 2015 Feb 25.

PMID:
25722460
42.

Recent technological advances in computed tomography and the clinical impact therein.

Runge VM, Marquez H, Andreisek G, Valavanis A, Alkadhi H.

Invest Radiol. 2015 Feb;50(2):119-27. doi: 10.1097/RLI.0000000000000125. Review.

PMID:
25521851
43.

Cranial dural arteriovenous shunts. Part 3. Classification based on the leptomeningeal venous drainage.

Baltsavias G, Roth P, Valavanis A.

Neurosurg Rev. 2015 Apr;38(2):273-81; discussion 281. doi: 10.1007/s10143-014-0596-9. Epub 2014 Dec 18.

PMID:
25516093
44.

Cranial dural arteriovenous shunts. Part 1. Anatomy and embryology of the bridging and emissary veins.

Baltsavias G, Parthasarathi V, Aydin E, Al Schameri RA, Roth P, Valavanis A.

Neurosurg Rev. 2015 Apr;38(2):253-63; discussion 263-4. doi: 10.1007/s10143-014-0590-2. Epub 2014 Dec 3. Review.

PMID:
25468011
45.

Intra-arterial administration of papaverine during mechanical thrombectomy for acute ischemic stroke.

Baltsavias G, Yella S, Al Shameri RA, Luft A, Valavanis A.

J Stroke Cerebrovasc Dis. 2015 Jan;24(1):41-7. doi: 10.1016/j.jstrokecerebrovasdis.2014.07.052. Epub 2014 Nov 13.

PMID:
25440359
46.

High-contrast coherent terahertz imaging of porcine tissue via swept-frequency feedback interferometry.

Lim YL, Taimre T, Bertling K, Dean P, Indjin D, Valavanis A, Khanna SP, Lachab M, Schaider H, Prow TW, Peter Soyer H, Wilson SJ, Linfield EH, Giles Davies A, Rakić AD.

Biomed Opt Express. 2014 Oct 17;5(11):3981-9. doi: 10.1364/BOE.5.003981. eCollection 2014 Nov 1.

47.

Cranial dural arteriovenous shunts. Part 4. Clinical presentation of the shunts with leptomeningeal venous drainage.

Baltsavias G, Spiessberger A, Hothorn T, Valavanis A.

Neurosurg Rev. 2015 Apr;38(2):283-91; discussion 291. doi: 10.1007/s10143-014-0595-x. Epub 2014 Nov 26.

PMID:
25421555
48.

Cranial dural arteriovenous shunts. Part 2. The shunts of the bridging veins and leptomeningeal venous drainage.

Baltsavias G, Kumar R, Avinash KM, Valavanis A.

Neurosurg Rev. 2015 Apr;38(2):265-71; discussion 272. doi: 10.1007/s10143-014-0594-y. Epub 2014 Nov 19.

PMID:
25403687
49.

Clinically isolated neurosarcoidosis: a recommended diagnostic path.

Wegener S, Linnebank M, Martin R, Valavanis A, Weller M.

Eur Neurol. 2015;73(1-2):71-7. doi: 10.1159/000366199. Epub 2014 Nov 12.

50.

The collateral circulation in pediatric moyamoya disease.

Baltsavias G, Khan N, Valavanis A.

Childs Nerv Syst. 2015 Mar;31(3):389-98. doi: 10.1007/s00381-014-2582-5. Epub 2014 Nov 7.

PMID:
25378261

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