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Lee HY, Park I, Luu MP, Zhao J, Vu JP, Cisneros E, Berman BD, Jinnah HA, Kim HJ, Liu CY, Perlmutter JS, Richardson SP, Weissbach A, Stebbins GT, Peterson DA. Interrater reliability of motor severity scales for hemifacial spasm. J Neural Transm (Vienna) 2023; 130:1269-1279. [PMID: 37466750 PMCID: PMC10480239 DOI: 10.1007/s00702-023-02667-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 06/24/2023] [Indexed: 07/20/2023]
Abstract
To compare the inter-rater reliability (IRR) of five clinical rating scales for video-based assessment of hemifacial spasm (HFS) motor severity. We evaluated the video recordings of 45 HFS participants recruited through the Dystonia Coalition. In Round 1, six clinicians with expertise in HFS assessed the participants' motor severity with five scales used to measure motor severity of HFS: the Jankovic rating scale (JRS), Hemifacial Spasm Grading Scale (HSGS), Samsung Medical Center (SMC) grading system for severity of HFS spasms (Lee's scale), clinical grading of spasm intensity (Chen's scale), and a modified version of the Abnormal Involuntary Movement Scale (Tunc's scale). In Round 2, clinicians rated the same cohort with simplified scale wording after consensus training. For each round, we evaluated the IRR using the intraclass correlation coefficient [ICC (2,1) single-rater, absolute-agreement, 2-way random model]. The scales exhibited IRR that ranged from "poor" to "moderate"; the mean ICCs were 0.41, 0.43, 0.47, 0.43, and 0.65 for the JRS, HSGS, Lee's, Chen's, and Tunc's scales, respectively, for Round 1. In Round 2, the corresponding IRRs increased to 0.63, 0.60, 0.59, 0.53, and 0.71. In both rounds, Tunc's scale exhibited the highest IRR. For clinical assessments of HFS motor severity based on video observations, we recommend using Tunc's scale because of its comparative reliability and because clinicians interpret the scale easily without modifications or the need for consensus training.
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Affiliation(s)
- Ha Yeon Lee
- Institute for Neural Computation, University of California, San Diego, La Jolla, CA, USA
| | - Ingyun Park
- Institute for Neural Computation, University of California, San Diego, La Jolla, CA, USA
| | - Minnie P Luu
- Institute for Neural Computation, University of California, San Diego, La Jolla, CA, USA
| | - Jerry Zhao
- Institute for Neural Computation, University of California, San Diego, La Jolla, CA, USA
| | - Jeanne P Vu
- Institute for Neural Computation, University of California, San Diego, La Jolla, CA, USA
| | - Elizabeth Cisneros
- Institute for Neural Computation, University of California, San Diego, La Jolla, CA, USA
| | - Brian D Berman
- Department of Neurology, Virginia Commonwealth University, Richmond, VA, USA
| | - H A Jinnah
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Han-Joon Kim
- Department of Neurology and Movement Disorders Centre, Seoul National University Hospital, Seoul, South Korea
| | - Catherine Y Liu
- Viterbi Family Department of Ophthalmology, University of California, San Diego, La Jolla, USA
- Department of Ophthalmology, Rady Children's Hospital, San Diego, CA, USA
- Division of Oculofacial Plastic and Reconstructive Surgery, Shiley Eye Institute, University of California, San Diego, La Jolla, USA
| | - Joel S Perlmutter
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
- Departments of Radiology, Neuroscience, Physical Therapy, and Occupational Therapy, Washington University School of Medicine, St. Louis, MO, USA
| | - Sarah Pirio Richardson
- Department of Neurology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
- Neurology Service, New Mexico Veterans Affairs Health Care System, Albuquerque, NM, USA
| | - Anne Weissbach
- Institute of Systems Motor Science, University of Luebeck, Luebeck, Germany
- Institute of Neurogenetics, University of Luebeck, Luebeck, Germany
| | - Glenn T Stebbins
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, USA
| | - David A Peterson
- Institute for Neural Computation, University of California, San Diego, La Jolla, CA, USA.
- Computational Neurobiology Laboratory, Salk Institute for Biological Studies, 10010 N. Torrey Pines Rd, La Jolla, CA, 92037, USA.
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Gao W, Yang D, Zhang Z, Du L, Liu B, Liu J, Chen Y, Wang Y, Liu X, Yang A, Lv K, Xue J, Ma G. Altered Cortical-Striatal Network in Patients With Hemifacial Spasm. Front Hum Neurosci 2021; 15:770107. [PMID: 34744670 PMCID: PMC8569140 DOI: 10.3389/fnhum.2021.770107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 09/29/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: Hemifacial spasm (HFS) is a kind of motor disorder, and the striatum plays a significant role in motor function. The purpose of this study was to explore the alterations of the cortical-striatal network in HFS using resting-state functional magnetic resonance imaging (fMRI). Methods: The fMRI data of 30 adult patients with primary unilateral HFS (15 left-side and 15 right-side) and 30 healthy controls were collected. Six subregions of the striatum in each hemisphere were selected for functional connectivity (FC) analysis. One-sample t-test was used to analyze the intragroup FC of the HFS group and the control group. Two-sample t-test was used to compare the difference of FC between the two groups. The correlation between the abnormal FC and severity of HFS was evaluated by using the Spearman correlation analysis. Results: Compared with the controls, the striatal subregions had altered FC with motor and orbitofrontal cortex in patients with HFS. The altered FC between striatal subregions and motor cortex was correlated with the spasm severity in patients with HFS. Conclusion: The FC of the cortical-striatal network was altered in primary HFS, and these alterations were correlated with the severity of HFS. This study indicated that the cortical-striatal network may play different roles in the underlying pathological mechanism of HFS.
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Affiliation(s)
- Wenwen Gao
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Dong Yang
- Department of Neurosurgery, China-Japan Friendship Hospital, Beijing, China
| | - Zhe Zhang
- Department of Neurosurgery, China-Japan Friendship Hospital, Beijing, China
| | - Lei Du
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Bing Liu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Jian Liu
- Department of Ultrasound Diagnosis, China-Japan Friendship Hospital, Beijing, China
| | - Yue Chen
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Yige Wang
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Xiuxiu Liu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Aocai Yang
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Kuan Lv
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Jiajia Xue
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Guolin Ma
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
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Niu X, Xu H, Guo C, Yang T, Kress D, Gao L, Ma S, Zhang M, Wang Y. Strengthened thalamoparietal functional connectivity in patients with hemifacial spasm: a cross-sectional resting-state fMRI study. Br J Radiol 2020; 93:20190887. [PMID: 31904268 DOI: 10.1259/bjr.20190887] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE In spite of the well-known importance of thalamus in hemifacial spasm (HFS), the thalamic resting-state networks in HFS is still rarely mentioned. This study aimed to investigate resting-state functional connectivity (FC) of the thalamus in HFS patients and examine its association with clinical measures. METHODS 25 HFS patients and 28 matched healthy controls underwent functional MRI at rest. Using the left and right thalamus as seed regions respectively, we compared the thalamic resting-state networks between patient and control groups using two independent sample t-test. RESULTS Compared with controls, HFS patients exhibited strengthened bilateral thalamus-seeded FC with the parietal cortex. Enhanced FC between right thalamus and left somatosensory association cortex was linked to worse motor disturbance, and the increased right thalamus-right supramarginal gyrus connection were correlated with improvement of affective symptoms. CONCLUSION Our findings indicate that the right thalamus-left somatosensory association cortex hyperconnectivity may represent the underlying neuroplasticity related to sensorimotor dysfunction. In addition, the upregulated FC between the right thalamus and right supramarginal gyrus in HFS, is part of the thalamo-default mode network pathway involved in emotional adaptation. ADVANCES IN KNOWLEDGE This study provides new insights on the integrative role of thalamo-parietal connectivity, which participates in differential neural circuitry as a mechanism underlying motor and emotional functions in HFS patients.
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Affiliation(s)
- Xuan Niu
- Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China.,Key Laboratory of Biomedical Information Engineering of Education Ministry, Institute of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China.,Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Hui Xu
- Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China.,Key Laboratory of Biomedical Information Engineering of Education Ministry, Institute of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Chenguang Guo
- Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Tong Yang
- Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China.,Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Dustin Kress
- Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Lin Gao
- Key Laboratory of Biomedical Information Engineering of Education Ministry, Institute of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Shaohui Ma
- Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Ming Zhang
- Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Yuan Wang
- Department of Medical Imaging, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, PR China
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Orbicularis Oculi Morphological Alterations in Affected and Nonaffected Sides in Hemifacial Spasm. J Neuroophthalmol 2019; 40:193-197. [PMID: 31453923 DOI: 10.1097/wno.0000000000000823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Although the nonaffected side appears to be clinically normal in hemifacial spasm (HFS), it is not known whether this side can be considered normal regarding histopathological findings. The purpose of this study was to objectively evaluate and compare orbicularis oculi samples of patients with HFS (not previously treated with botulinum toxin) and control patients undergoing cosmetic upper eyelid blepharoplasty. METHODS Orbicularis oculi samples from 22 eyelids were evaluated. There were 7 samples from the affected and 7 samples from the nonaffected sides of patients with HFS who had not been previously treated with botulinum toxin, and 8 samples from normal control patients. Muscle samples were prepared using hematoxylin and eosin staining, and a digital image analysis software was used for objective analyses. RESULTS When compared with normal controls, endomysial and perimysial connective tissue areas were significantly increased (P = 0.015) on the affected side in HFS, suggesting that this disorder is associated with chronic alterations that lead to muscle degeneration. Cell density was significantly reduced on the affected (P = 0.028) and also on the nonaffected sides in HFS (P = 0.003) compared with normal controls. This was observed, although, clinically, there were no signs or symptoms of increased muscular contraction on the nonaffected sides in any of the patients with HFS studied. CONCLUSIONS Significant morphological differences in the orbicularis oculi muscle in patients with HFS were observed on both the affected and nonaffected sides. Our findings suggest a potential role for muscle homeostasis disturbances on both sides for patients with HFS. Affected sides in patients with HFS did, however, demonstrate muscle degeneration that was not present on the nonaffected sides.
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Yuksel B, Genc F, Yaman A, Goksu EO, Ak PD, Gomceli YB. Evaluation of stigmatization in hemifacial spasm and quality of life before and after botulinum toxin treatment. Acta Neurol Belg 2019; 119:55-60. [PMID: 30178181 DOI: 10.1007/s13760-018-1018-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 08/31/2018] [Indexed: 01/15/2023]
Abstract
Hemifacial spasm (HFS) is a chronic disease that is characterized by involuntary tonic and clonic contractions of the muscles innervated by the ipsilateral facial nerve. Botulinum toxin (BTX) is the most effective medical treatment of this condition. The aim of our study was to evaluate stigma among patients diagnosed with HFS and to search quality of life and depression before and after BTX injection. Seven self-rating items (HFS-7) and seven questions related to stigmatization were administered to HFS patients. Participants also answered SF-36 health outcome measure and Beck depression inventory before and 4 weeks after the routine BTX injection. The severity of HFS was graded based on a five-point scale. Descriptive statistics and paired t test were applied. The level of significance was set at α = 0.05. Fourty HFS patients were prospectively included. Twenty-one (%52.5) were female and nineteen were male (47.5%) with a mean age of 57.1 (SD = 12.13; min-max = 27-78). 60% (n: 24) of patients were feeling themselves different from people without HFS. Beck depression inventory scores improved after BTX injection significantly (p < 0.05). All domains of SF-36 showed positive improvement after BTX injections. The improvement in general health perception, physical functioning, and vitality was statistically significant (p < 0.05). Although more than half of the patients felt themselves different from people without HFS, treatment of HFS with BTX significantly improved mental health and physical health, and depressive symptoms of the patients.
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Affiliation(s)
- Burcu Yuksel
- Neurology Department, Antalya Training and Research Hospital, Muratpasa, 07050, Antalya, Turkey.
| | - Fatma Genc
- Neurology Department, Antalya Training and Research Hospital, Muratpasa, 07050, Antalya, Turkey
| | - Aylin Yaman
- Neurology Department, Antalya Training and Research Hospital, Muratpasa, 07050, Antalya, Turkey
| | - Eylem Ozaydin Goksu
- Neurology Department, Antalya Training and Research Hospital, Muratpasa, 07050, Antalya, Turkey
| | - Pelin Dogan Ak
- Neurology Department, Fatih Sultan Mehmet Training and Research Hospital, Kadıkoy, 34752, Istanbul, Turkey
| | - Yasemin Bicer Gomceli
- Neurology Department, Antalya Training and Research Hospital, Muratpasa, 07050, Antalya, Turkey
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6
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Zhang P, Selim MH, Wang H, Kuang W, Wu M, Ji C, Hu G, Wu L, Zhu X, Guo H. Intraoperative Measuring of the Offending Vessel’s Pressure on the Facial Nerve at Root Exit Zone in Patients with Hemifacial Spasm During Microvascular Decompression: A Prospective Study. World Neurosurg 2019; 122:e89-e95. [DOI: 10.1016/j.wneu.2018.09.080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/09/2018] [Accepted: 09/11/2018] [Indexed: 11/25/2022]
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7
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Na BS, Cho JW, Park K, Kwon S, Kim YS, Kim JS, Youn J. Severe Hemifacial Spasm is a Predictor of Severe Indentation and Facial Palsy after Microdecompression Surgery. J Clin Neurol 2018; 14:303-309. [PMID: 29856152 PMCID: PMC6031990 DOI: 10.3988/jcn.2018.14.3.303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 01/14/2018] [Accepted: 01/16/2018] [Indexed: 12/13/2022] Open
Abstract
Background and Purpose Hemifacial spasm (HFS) is mostly caused by the compression of the facial nerve by cerebral vessels, but the significance of spasm severity remains unclear. We investigated the clinical significance of spasm severity in patients with HFS who underwent microvascular decompression (MVD). Methods We enrolled 636 patients with HFS who underwent MVD between May 2010 and December 2013 at Samsung Medical Center (SMC), Seoul, Korea. Subjects were divided into two groups based on spasm severity: severe (SMC grade 3 or 4) and mild (SMC grade 1 or 2). We compared demographic, clinical, and surgical data between these two groups. Results The severe-spasm group was older and had a longer disease duration at the time of MVD compared to the mild-spasm group. Additionally, hypertension and diabetes mellitus were more common in the severe-spasm group than in the mild-spasm group. Regarding surgical findings, there were more patients with multiple offending vessels and more-severe indentations in the severe-spasm group than in the mild-spasm group. Even though the surgical outcomes did not differ, the incidence of delayed facial palsy after MVD was higher in the severe-spasm group than in the mild-spasm group. Logistic regression analysis showed that severe-spasm was correlated with longer disease duration, hypertension, severe indentation, multiple offending vessels, and delayed facial palsy after MVD. Conclusions Spasm severity does not predict surgical outcomes, but it can be used as a marker of pathologic compression in MVD for HFS, and be considered as a predictor of delayed facial palsy after MVD.
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Affiliation(s)
- Boo Suk Na
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Korea
| | - Jin Whan Cho
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Korea
| | - Kwan Park
- Neuroscience Center, Samsung Medical Center, Seoul, Korea.,Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soonwook Kwon
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Korea
| | - Ye Sel Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Korea
| | - Ji Sun Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Korea
| | - Jinyoung Youn
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Neuroscience Center, Samsung Medical Center, Seoul, Korea.
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Cheng J, Lei D, Hui X, Zhang H. Improvement of Quality of Life in Patients with Hemifacial Spasm After Microvascular Decompression: A Prospective Study. World Neurosurg 2017; 107:549-553. [DOI: 10.1016/j.wneu.2017.08.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/04/2017] [Accepted: 08/08/2017] [Indexed: 11/28/2022]
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Lawrence JD, Frederickson AM, Chang YF, Weiss PM, Gerszten PC, Sekula RF. An investigation into quality of life improvement in patients undergoing microvascular decompression for hemifacial spasm. J Neurosurg 2017; 128:193-201. [PMID: 28186450 DOI: 10.3171/2016.9.jns161022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Hemifacial spasm (HFS) is a movement disorder characterized by involuntary spasms of the facial muscles, and it can negatively impact quality of life (QOL). This retrospective study and systematic review with meta-analysis was conducted to investigate the QOL in patients with HFS following intervention with microvascular decompression (MVD) and botulinum toxin (BT). METHODS In the retrospective analysis, a QOL questionnaire was administered to all patients undergoing MVD performed by a single surgeon. The QOL questionnaire included unique questions developed based on the authors' experience with HFS patients in addition to the health-related QOL HFS-8 questionnaire. The authors also report on a systematic review of the English literature providing outcomes and complications in patients with HFS undergoing treatment with either MVD or BT. RESULTS Regarding the retrospective analysis, 242 of 331 patients completed the questionnaire. The mean score of the 10 QOL questions improved from 22.78 (SD 9.83) to 2.17 (SD 5.75) following MVD (p < 0.001). There was significant improvement across all subscales of the questionnaire between pre- and postoperative responses (p < 0.001). Regarding the systematic review, it is reported that approximately 90% of patients undergoing MVD for HFS experience a complete recovery from symptoms, whereas the mean peak improvement of symptoms following treatment with BT is 77%. Furthermore, patients undergoing MVD reported a greater improvement in the mean supplemental index of QOL as compared with patients receiving BT therapy. CONCLUSIONS Microvascular decompression offers a significant improvement in QOL in well-selected patients suffering from HFS, and may offer an increased benefit for QOL over BT injections.
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Affiliation(s)
| | | | - Yue-Fang Chang
- 2Department of Neurological Surgery, University of Pittsburgh Medical Center; and
| | - Patricia M Weiss
- 3Health Sciences Library System, University of Pittsburgh, Pennsylvania
| | - Peter C Gerszten
- 1University of Pittsburgh School of Medicine.,2Department of Neurological Surgery, University of Pittsburgh Medical Center; and
| | - Raymond F Sekula
- 1University of Pittsburgh School of Medicine.,2Department of Neurological Surgery, University of Pittsburgh Medical Center; and
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Sekula RF, Frederickson AM, Branstetter BF, Oskin JE, Stevens DR, Zwagerman NT, Grandhi R, Hughes MA. Thin-slice T2 MRI imaging predicts vascular pathology in hemifacial spasm: a case-control study. Mov Disord 2014; 29:1299-303. [PMID: 25044001 DOI: 10.1002/mds.25947] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 05/30/2014] [Accepted: 06/02/2014] [Indexed: 11/06/2022] Open
Abstract
Hemifacial spasm (HFS) is a condition that may severely reduce patients' quality of life. We sought to determine the sensitivity and specificity of thin-slice T2 magnetic resonance imaging (MRI) for detecting vascular compression in HFS patients. Prospective information was collected on 28 patients with HFS who presented to our center between March 2011 and March 2012 with thin-slice T2 MR imaging. The sensitivity and specificity for differentiating patients from controls were calculated. Sensitivities were 78.6% and 92.9% for the blinded radiologists and 75% for the partially blinded neurosurgeon. Specificities were 42.9% and 28.6% for the blinded radiologists and 75% for the partially blinded neurosurgeon. Magnetic resonance imaging of the facial nerve can guide clinicians in selecting patients who are good surgical candidates. Thin-slice T2 MRI should be viewed as supportive rather than diagnostic.
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Affiliation(s)
- Raymond F Sekula
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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Youn J, Kwon S, Kim JS, Jeong H, Park K, Cho JW. Safety and Effectiveness of Microvascular Decompression for the Treatment of Hemifacial Spasm in the Elderly. Eur Neurol 2013; 70:165-71. [DOI: 10.1159/000351266] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 04/08/2013] [Indexed: 11/19/2022]
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