Abstract
Introduction
Drug-resistant essential tremor (ET) can benefit from open standard stereotactic procedures, such as deep-brain stimulation or radiofrequency thalamotomy. Non-surgical candidates can be offered either high-focused ultrasound (HIFU) or radiosurgery (RS). All procedures aim to target the same thalamic site, the ventro-intermediate nucleus (e.g., Vim). The mechanisms by which tremor stops after Vim RS or HIFU remain unknown. We used voxel-based morphometry (VBM) on pretherapeutic neuroimaging data and assessed which anatomical site would best correlate with tremor arrest 1 year after Vim RS.
Methods
Fifty-two patients (30 male, 22 female; mean age 71.6 years, range 49–82) with right-sided ET benefited from left unilateral Vim RS in Marseille, France. Targeting was performed in a uniform manner, using 130 Gy and a single 4-mm collimator. Neurological (pretherapeutic and 1 year after) and neuroimaging (baseline) assessments were completed. Tremor score on the treated hand (TSTH) at 1 year after Vim RS was included in a statistical parametric mapping analysis of variance (ANOVA) model as a continuous variable with pretherapeutic neuroimaging data. Pretherapeutic gray matter density (GMD) was further correlated with TSTH improvement. No a priori hypothesis was used in the statistical model.
Results
The only statistically significant region was right Brodmann area (BA) 18 (visual association area V2, p = 0.05, cluster size Kc = 71). Higher baseline GMD correlated with better TSTH improvement at 1 year after Vim RS (Spearman’s rank correlation coefficient = 0.002).
Conclusions
Routine baseline structural neuroimaging predicts TSTH improvement 1 year after Vim RS. The relevant anatomical area is the right visual association cortex (BA 18, V2). The question whether visual areas should be included in the targeting remains open.
Similar content being viewed by others
References
Ashburner J, Friston KJ (2000) Voxel-based morphometry—the methods. NeuroImage 11:805–821
Bagepally BS, Bhatt MD, Chandran V, Saini J, Bharath RD, Vasudev MK, Prasad C, Yadav R, Pal PK (2012) Decrease in cerebral and cerebellar gray matter in essential tremor: A voxel-based morphometric analysis under 3T MRI. J Neuroimaging Off J Am Soc Neuroimaging 22:275–278
Benabid AL, Pollak P, Gao D, Hoffmann D, Limousin P, Gay E, Payen I, Benazzouz A (1996) Chronic electrical stimulation of the ventralis intermedius nucleus of the thalamus as a treatment of movement disorders. J Neurosurg 84:203–214
Benito-Leon J, Alvarez-Linera J, Hernandez-Tamames JA, Alonso-Navarro H, Jimenez-Jimenez FJ, Louis ED (2009) Brain structural changes in essential tremor: Voxel-based morphometry at 3-Tesla. J Neurol Sci 287:138–142
Bhalsing KS, Saini J, Pal PK (2013) Understanding the pathophysiology of essential tremor through advanced neuroimaging: A review. J Neurol Sci 335:9–13
Blomstedt P, Hariz GM, Hariz MI, Koskinen LO (2007) Thalamic deep brain stimulation in the treatment of essential tremor: A long-term follow-up. Br J Neurosurg 21:504–509
Buijink AW, Broersma M, van der Stouwe AM, Sharifi S, Tijssen MA, Speelman JD, Maurits NM, van Rootselaar AF (2016) Cerebellar atrophy in cortical myoclonic tremor and not in hereditary essential tremor—a voxel-based morphometry study. Cerebellum 15:696–704
Campbell AM, Glover J, Chiang VL, Gerrard J, Yu JB (2015) Gamma knife stereotactic radiosurgical thalamotomy for intractable tremor: A systematic review of the literature. Radiother Oncol J Eur Soc Ther Radiol Oncol 114:296–301
Carrasco M (2011) Visual attention: The past 25 years. Vis Res 51:1484–1525
Cerasa A, Messina D, Nicoletti G, Novellino F, Lanza P, Condino F, Arabia G, Salsone M, Quattrone A (2009) Cerebellar atrophy in essential tremor using an automated segmentation method. AJNR Am J Neuroradiol 30:1240–1243
Daniels C, Peller M, Wolff S, Alfke K, Witt K, Gaser C, Jansen O, Siebner HR, Deuschl G (2006) Voxel-based morphometry shows no decreases in cerebellar gray matter volume in essential tremor. Neurology 67:1452–1456
Daniels JK, Gaebler M, Lamke JP, Walter H (2015) Grey matter alterations in patients with depersonalization disorder: A voxel-based morphometry study. J Psychiatry Neurosci JPN 40:19–27
Elble RJ (2000) Diagnostic criteria for essential tremor and differential diagnosis. Neurology 54:S2–S6
Elias WJ, Huss D, Voss T, Loomba J, Khaled M, Zadicario E, Frysinger RC, Sperling SA, Wylie S, Monteith SJ, Druzgal J, Shah BB, Harrison M, Wintermark M (2013) A pilot study of focused ultrasound thalamotomy for essential tremor. N Engl J Med 369:640–648
Elias WJ, Lipsman N, Ondo WG, Ghanouni P, Kim YG, Lee W, Schwartz M, Hynynen K, Lozano AM, Shah BB, Huss D, Dallapiazza RF, Gwinn R, Witt J, Ro S, Eisenberg HM, Fishman PS, Gandhi D, Halpern CH, Chuang R, Butts Pauly K, Tierney TS, Hayes MT, Cosgrove GR, Yamaguchi T, Abe K, Taira T, Chang JW (2016) A randomized trial of focused ultrasound Thalamotomy for essential tremor. N Engl J Med 375:730–739
Glickstein M (2000) How are visual areas of the brain connected to motor areas for the sensory guidance of movement? Trends Neurosci 23:613–617
Hallett M (2012) Parkinson’s disease tremor: Pathophysiology. Parkinsonism Relat Disord 18(Suppl 1):S85–S86
Hallett M (2014) Tremor: Pathophysiology. Parkinsonism Relat Disord 20(Suppl 1):S118–S122
Hansel C (2009) Reading the clock: How Purkinje cells decode the phase of olivary oscillations. Neuron 62:308–309
Hariz GM, Lindberg M, Bergenheim AT (2002) Impact of thalamic deep brain stimulation on disability and health-related quality of life in patients with essential tremor. J Neurol Neurosurg Psychiatry 72:47–52
Hua SE, Lenz FA (2005) Posture-related oscillations in human cerebellar thalamus in essential tremor are enabled by voluntary motor circuits. J Neurophysiol 93:117–127
Jang C, Park HJ, Chang WS, Pae C, Chang JW (2016) Immediate and longitudinal alterations of functional networks after thalamotomy in essential tremor. Front Neurol 7:184
Kondziolka D, Ong JG, Lee JY, Moore RY, Flickinger JC, Lunsford LD (2008) Gamma Knife thalamotomy for essential tremor. J Neurosurg 108:111–117
Larsson J, Landy MS, Heeger DJ (2006) Orientation-selective adaptation to first- and second-order patterns in human visual cortex. J Neurophysiol 95:862–881
Lin CH, Chen CM, Lu MK, Tsai CH, Chiou JC, Liao JR, Duann JR (2013) VBM reveals brain volume differences between Parkinson’s disease and essential tremor patients. Front Hum Neurosci 7:247
Lipsman N, Schwartz ML, Huang Y, Lee L, Sankar T, Chapman M, Hynynen K, Lozano AM (2013) MR-guided focused ultrasound thalamotomy for essential tremor: A proof-of-concept study. Lancet Neurol 12:462–468
Louis ED (2005) Essential tremor. Lancet Neurol 4:100–110
Nagaseki Y, Shibazaki T, Hirai T, Kawashima Y, Hirato M, Wada H, Miyazaki M, Ohye C (1986) Long-term follow-up results of selective VIM-thalamotomy. J Neurosurg 65:296–302
Nicoletti V, Cecchi P, Frosini D, Pesaresi I, Fabbri S, Diciotti S, Bonuccelli U, Cosottini M, Ceravolo R (2015) Morphometric and functional MRI changes in essential tremor with and without resting tremor. J Neurol 262:719–728
Passamonti L, Novellino F, Cerasa A, Chiriaco C, Rocca F, Matina MS, Fera F, Quattrone A (2011) Altered cortical-cerebellar circuits during verbal working memory in essential tremor. Brain 134:2274–2286
Popa T, Russo M, Vidailhet M, Roze E, Lehericy S, Bonnet C, Apartis E, Legrand AP, Marais L, Meunier S, Gallea C (2013) Cerebellar rTMS stimulation may induce prolonged clinical benefits in essential tremor, and subjacent changes in functional connectivity: An open label trial. Brain Stimul 6:175–179
Quattrone A, Cerasa A, Messina D, Nicoletti G, Hagberg GE, Lemieux L, Novellino F, Lanza P, Arabia G, Salsone M (2008) Essential head tremor is associated with cerebellar vermis atrophy: A volumetric and voxel-based morphometry MR imaging study. AJNR Am J Neuroradiol 29:1692–1697
Regis J, Carron R, Park M (2010) Is radiosurgery a neuromodulation therapy?: A 2009 Fabrikant award lecture. J Neuro-Oncol 98:155–162
Sharifi S, Nederveen AJ, Booij J, van Rootselaar AF (2014) Neuroimaging essentials in essential tremor: A systematic review. NeuroImage Clin 5:217–231
Tardif E, Richer L, Bergeron A, Lepore F, Guillemot JP (1997) Spatial resolution and contrast sensitivity of single neurons in area 19 of split-chiasm cats: A comparison with primary visual cortex. Eur J Neurosci 9:1929–1939
Tolosa E, Pena J (1988) Involuntary vocalizations in movement disorders. Adv Neurol 49:343–363
Tuleasca C, Pralong E, Najdenovska E, Cuadra MB, Marques JRF, Vingerhoets F, Regis J, Bloch J, Levivier M (2017) Deep brain stimulation after previous gamma knife thalamotomy of the vim for essential tremor is feasible! Clinical, electrophysiological and radiological findings. Acta Neurochir 159:1371–1373
Tuleasca C, Witjas T, Najdenovska E, Verger A, Girard N, Champoudry J, Thiran JP, Van de Ville D, Bach Cuadra M, Levivier M, Guedj E, Régis J (2017) Assessing the clinical outcome of vim radiosurgery with voxel-based morphometry: Visual areas are linked with tremor arrest! Acta Neurochir. https://doi.org/10.1007/s00701-017-3317-7
Waberski TD, Gobbele R, Lamberty K, Buchner H, Marshall JC, Fink GR (2008) Timing of visuo-spatial information processing: Electrical source imaging related to line bisection judgements. Neuropsychologia 46:1201–1210
Wintermark M, Huss DS, Shah BB, Tustison N, Druzgal TJ, Kassell N, Elias WJ (2014) Thalamic connectivity in patients with essential tremor treated with MR imaging-guided focused ultrasound: In vivo fiber tracking by using diffusion-tensor MR imaging. Radiology 272:202–209
Witjas T, Carron R, Krack P, Eusebio A, Vaugoyeau M, Hariz M, Azulay JP, Regis J (2015) A prospective single-blind study of gamma knife thalamotomy for tremor. Neurology 85:1562–1568
Zeki S (1993) The visual association cortex. Curr Opin Neurobiol 3:155–159
Zeki S, Watson JD, Lueck CJ, Friston KJ, Kennard C, Frackowiak RS (1991) A direct demonstration of functional specialization in human visual cortex. J Neurosci Off J Soc Neurosci 11:641–649
Zesiewicz TA, Elble R, Louis ED, Hauser RA, Sullivan KL, Dewey RB Jr, Ondo WG, Gronseth GS, Weiner WJ, Quality Standards Subcommittee of the American Academy of N (2005) Practice parameter: Therapies for essential tremor: Report of the quality standards Subcommittee of the American Academy of Neurology. Neurology 64:2008–2020
Funding
This work was supported by Timone University Hospital, the Swiss National Science Foundation SNSF-205321-157,040, the Centre d’Imagerie BioMédicale (CIBM) of the University of Lausanne (UNIL), the University of Geneva (UniGe), the Centre Hospitalier Universitaire Vaudois (CHUV) and the Leenaards and Jeantet Foundations.This work was carried out thanks to the support of the A*MIDEX project (no. ANR-11-IDEX-0001-02) funded by the "Investissements d’Avenir" French Government program, managed by the French National Research Agency (ANR).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
Ethical approval
The study was approved by the local ethics committee of Timone University Hospital, Marseille, France. Patient consent was acquired in all cases.
Additional information
Comments
Fifty-two patients with right-sided ET were treated with left unilateral Vim Gamma Knife (Vim) thalamotomy. Targeting was performed using 130 Gy and a single 4-mm collimator. Pre-therapeutic gray matter density in T1-weighted MRI (GMD) was correlated with tremor score improvement of the treated hand (TSTH) at 1 year after Vim RS as a continuous variable. As the only statistically significant anatomical region, higher baseline GMD in right Brodmann area 18 (visual association area V2) correlated with better TSTH improvement.
This article shows a very interesting relation between unsuspected anatomical visual association areas (BA18, V2) and tremor arrest in general by demonstrating a correlation between pre-therapeutic T1w imaging in visual association areas and outcome of left unilateral radiosurgical Vim lesions in patients with right-sided essential tremor.
Bodo Lippitz
Hamburg, Germany
This study is from a leading group in the field of radiosurgery for functional disorders. The authors were able to recruit a remarkable number of patients treated with an innovative method for a rare disease. No a priori hypothesis was used in the statistical model, which is a very important strength of the study. Also, the hypothesis that the visual areas are linked to the motor ones, as sensory guidance of the movement of the hand and fingers, appears sound and sheds new light on the understanding of the visuospatial network.
Alfredo Conti
Messina, Italy
Rights and permissions
About this article
Cite this article
Tuleasca, C., Witjas, T., Van de Ville, D. et al. Right Brodmann area 18 predicts tremor arrest after Vim radiosurgery: a voxel-based morphometry study. Acta Neurochir 160, 603–609 (2018). https://doi.org/10.1007/s00701-017-3391-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00701-017-3391-x