1
|
Li Y, Cao Q, Hou Z, Tang B, Shen Y. Transcranial Sonography as a Diagnostic Tool for Depressive Disorders. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2023; 42:687-699. [PMID: 36047031 DOI: 10.1002/jum.16081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 07/19/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Transcranial sonography (TCS) is an available and noninvasive neuroimaging method that has been found to reduce the echogenicity of the brainstem raphe (BR) in patients with depression. Applying the criteria of the Diagnostic and Statistical Manual of Mental Disorders-IV (DSM-IV), we performed a meta-analysis of the diagnostic accuracy of TCS. METHODS A systematic search was conducted in PubMed, EMBASE, The Cochrane Library, and Web of Science. The databases were searched from inception to December 2021. The quality of the included literature was assessed using the QUADAS-2. Heterogeneity analysis was performed. A summary receiver operating characteristic (SROC) curve was generated to evaluate the diagnostic accuracy of TCS. RESULTS We included 12 studies with 809 patients. The pooled sensitivity was 0.66 (95% confidence interval [CI]: 0.61-0.71), and the specificity was 0.84 (95% CI: 0.80-0.87). The combined positive likelihood ratio (LR) was 3.84 (95% CI: 2.68-5.51), the negative LR was 0.41 (95% CI: 0.29-0.57), and the diagnostic odds ratio (DOR) was 11.45 (95% CI: 5.57-23.02). The area under the curve (AUC) of the plotted SROC curve was 0.86 (95% CI: 0.83-0.89). The meta-regression and subgroup analyses found no source of heterogeneity. CONCLUSION TCS has high potential and efficacy in diagnosing depression and may be a reasonable test to perform clinically for the assessment of depression.
Collapse
Affiliation(s)
- Yanping Li
- Department of neuroelectrophysiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qian Cao
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhuo Hou
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Boji Tang
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yu Shen
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| |
Collapse
|
2
|
Garcia-Malo C, Novo-Ponte S, Castro-Villacañas Farzamnia A, Boi S, Miranda Castillo C, Romero Peralta S, Martínez Vidal V, Botta L, Anguizola S, Cano-Pumarega I, Garcia-Borreguero D. Correlation between systemic iron parameters and substantia nigra iron stores in restless legs syndrome. Sleep Med 2021; 85:191-195. [PMID: 34343769 DOI: 10.1016/j.sleep.2021.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/18/2021] [Accepted: 07/13/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To evaluate the relation between systemic iron parameters (SIP) and substantia nigra (SN) iron deposits, as assessed by transcranial sonography (TCS) in restless legs syndrome (RLS). METHODS We conducted a cross-sectional study in RLS patients, from whom blood samples with SIP were obtained, consisting of total iron-binding capacity (TIBC), serum ferritin, hemoglobin, transferrin saturation (TSAT), serum iron, and serum transferrin. TCS was performed over the SN, and the substantia nigra echogenicity index (SNEI) was determined according to established methods. Symptom severity was evaluated using the international restless legs scale (IRLS). A Spearman correlation was performed. RESULTS A total of 167 patients were studied. Correlations between SNEI and SIP were as follows: serum ferritin (R = 0.0422; n.s.), TSAT (R = 0.0883; n.s.), TIBC (R = -0.1091; n.s.), serum transferrin (R = -0.0420; n.s.), hemoglobin (R = 0.0185; n.s.), serum iron (R = 0.0389; n.s.). No correlation was found with age and IRLS (R = 0.1375; n.s. and R = 0.0880, n.s., respectively). CONCLUSIONS SIP are not correlated with SN iron content in RLS, quantified by means of TCS. TCS of the SN might be a more valid estimate and could be useful in the evaluation of RLS patients.
Collapse
Affiliation(s)
- Celia Garcia-Malo
- Sleep Research Institute, Madrid, Spain; PhD Program in Neuroscience, Autonoma de Madrid University, Madrid, 28029, Spain.
| | - Sabela Novo-Ponte
- Sleep Research Institute, Madrid, Spain; Neurology Department, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, Spain
| | | | - Sara Boi
- Sleep Research Institute, Madrid, Spain
| | - Carolina Miranda Castillo
- Sleep Research Institute, Madrid, Spain; Hematology Department, Hospital Rey Juan Carlos, Móstoles, Spain
| | - Sofia Romero Peralta
- Sleep Research Institute, Madrid, Spain; Sleep Unit. Respiratory Department, Hospital Universitario de Guadalajara, Guadalajara, Spain
| | | | | | | | - Irene Cano-Pumarega
- Sleep Research Institute, Madrid, Spain; Sleep Unit. Respiratory Department, Hospital Ramón y Cajal (IRYCIS), Madrid, Spain
| | | |
Collapse
|
3
|
Low risk of iron overload or anaphylaxis during treatment of restless legs syndrome with intravenous iron: a consecutive case series in a regular clinical setting. Sleep Med 2020; 74:48-55. [PMID: 32841843 DOI: 10.1016/j.sleep.2020.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/21/2020] [Accepted: 06/01/2020] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To evaluate the incidence of iron overload and anaphylaxis following intravenous (IV) iron treatment of restless legs syndrome (RLS). METHODS A total of 58 consecutive RLS patients, meeting clinical requirements for IV iron treatment according to current IRLSSG guidelines were recruited. IV iron treatment consisted of two 500 mg infusions of ferric carboxymaltose (FCM) administered five days apart. During each of the three follow-up visits we obtained blood samples, substantia nigra echogenity index (SNEI) by means of transcranial sonography (TCS), and assessed the severity of RLS symptoms (IRLS scale). "Iron overload risk" was defined as transferrin saturation (TSAT) > 45% on two consecutive follow-up visits. In patients who had a reduction in systemic iron levels following treatment, an additional 500 mg of FCM was administered when feasible. In such cases an additional two follow-up visits were performed. RESULTS Among the total sample, only 2/58 participants met criteria for iron overload risk. They had no evidence of liver damage and did not require additional treatment. Among the 21 patients receiving an additional 500 mg infusion after, only one patient was diagnosed with iron overload risk. Among these three patients, only one was a hemochromatosis gene carrier. No anaphylaxis or other side-effects were reported. CONCLUSIONS In real-life clinical conditions, the risk of iron overload is low when IV FCM is administered according to the safety limits defined in the current RLS treatment guidelines. However, a close clinical follow-up with periodic blood sampling for iron status, is needed.
Collapse
|
4
|
|
5
|
Garcia-Malo C, Wanner V, Miranda C, Romero Peralta S, Agudelo L, Cano-Pumarega I, Granizo JJ, Garcia-Borreguero D. Quantitative transcranial sonography of the substantia nigra as a predictor of therapeutic response to intravenous iron therapy in restless legs syndrome. Sleep Med 2019; 66:123-129. [PMID: 31875533 DOI: 10.1016/j.sleep.2019.09.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/09/2019] [Accepted: 09/16/2019] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To analyze changes in substantia nigra (SN) iron deposits, assessed by quantitative transcranial sonography (TCS), to obtain and compare substantia nigra echogenicity indices (SNEI) at baseline and after intravenous (IV) iron therapy in patients with restless legs syndrome (RLS)/Willis-Ekbom disease (WED). METHODS A total of 30 consecutive subjects diagnosed with RLS/WED were recruited and underwent IV iron treatment. The SNEI, total daily dose of dopamine equivalents, and International Restless Legs Syndrome Rating Scale (IRLS) scores were obtained at baseline and following IV iron administration. Comparative statistics were performed by means of nonparametric testing. RESULTS The sample was stratified into two groups according to the median baseline SNEI and the grade of SN hypoechogenicity: severely hypoechogenic (HE) (n = 13) and moderately HE (n = 17). Following IV iron, the increase in SNEI among severely HE subjects was 19% (0.038 ± 0.046 cm2; P < 0.01), whereas in moderately HE subjects it was 10% (0.021 ± 0.069 cm2; P = 0.28). Among severely HE subjects, the average reduction in IRLS following IV iron was 10 ± 7.12 points (P < 0.01), in contrast to 1.85 ± 9.85 (not significant) among moderately HE subjects. Finally, we quantified the percentage of patients in each group who were able to reduce by ≥30% their total daily dopaminergic requirements (TDR) after IV iron, with a 57.14% reduction in the severely HE group vs 25% in the moderately HE group (P = 0.1). Three of 30 subjects (17%) were able to completely cease all dopaminergic treatment. CONCLUSION Intravenous iron caused changes in SNEI in both groups of patients, reflecting an increase in brain iron stores. However, the increase in SNEI was greater in patients previously defined as severely HE. Furthermore, RLS/WED symptoms also improved more in severely HE subjects, and there was a greater reduction in TDR. This study highlights the role of TCS in quantifying brain iron deposits and in predicting which patients will likely benefit from IV iron.
Collapse
Affiliation(s)
| | | | | | | | | | - Irene Cano-Pumarega
- Sleep Research Institute, Madrid, Spain; Sleep Unit, Respiratory Department, Hospital Ramón y Cajal (IRYCIS), Madrid, Spain
| | - Juan José Granizo
- Unidad de Apoyo a la Investigación, Hospital Universitario Infanta Cristina, Parla, Spain; Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Majadahonda, Spain
| | | |
Collapse
|
6
|
Drepper C, Geißler J, Pastura G, Yilmaz R, Berg D, Romanos M, Gerlach M. Transcranial sonography in psychiatry as a potential tool in diagnosis and research. World J Biol Psychiatry 2018; 19:484-496. [PMID: 28971725 DOI: 10.1080/15622975.2017.1386325] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES During the last two decades transcranial sonography (TCS) of the brain parenchyma evolved from a pure research tool to a clinical relevant neuroimaging method especially in Parkinson's disease and related movement disorders. The aim of this systematic review is to update and summarise the published TCS findings in psychiatric disorders and critically address the question whether TCS may be a valuable tool for the diagnosis or differential diagnosis of psychiatric disorders similarly to the field of movement disorders. METHODS This paper provides detailed information about the perspectives and limitations of TCS, including guidelines for the scanning procedures, assessment of midbrain structures and discusses the potential causes of the ultrasound abnormalities in psychiatric disorders. RESULTS Changes in the echogenicity of subcortical brain structures were detected in different disorders, such as obsessive-compulsive disorder, autism spectrum disorder, schizophrenia, panic disorder, attention-deficit/hyperactivity (ADHD), bipolar disorder and depressive disorder. Although the physical properties of brain tissue underlying the echogenic features in TCS are largely unknown, no alternative technique provides the same insight into the specific central nervous structural characteristics. CONCLUSIONS Urgent research questions to further clarify the underlying pathophysiological and structural alterations are further outlined to bring this promising technique to the clinic.
Collapse
Affiliation(s)
- Carsten Drepper
- a Center of Mental Health, Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy , University Hospital of Würzburg , Würzburg , Germany
| | - Julia Geißler
- a Center of Mental Health, Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy , University Hospital of Würzburg , Würzburg , Germany
| | - Giuseppe Pastura
- b Department of Pediatrics , The Federal University of Rio de Janeiro , Rio de Janeiro , Brazil
| | - Rezzak Yilmaz
- c Department of Neurology , Christian-Albrecht-University , Kiel , Germany
| | - Daniela Berg
- c Department of Neurology , Christian-Albrecht-University , Kiel , Germany.,d Department of Neurodegeneration , University of Tübingen , Tübingen , Germany
| | - Marcel Romanos
- a Center of Mental Health, Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy , University Hospital of Würzburg , Würzburg , Germany
| | - Manfred Gerlach
- a Center of Mental Health, Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy , University Hospital of Würzburg , Würzburg , Germany
| |
Collapse
|
7
|
Lindemann K, Müller HP, Ludolph AC, Hornyak M, Kassubek J. Microstructure of the Midbrain and Cervical Spinal Cord in Idiopathic Restless Legs Syndrome: A Diffusion Tensor Imaging Study. Sleep 2016; 39:423-8. [PMID: 26446110 DOI: 10.5665/sleep.5456] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 09/19/2015] [Indexed: 01/18/2023] Open
Abstract
STUDY OBJECTIVES Diffusion tensor imaging (DTI) allows the study of white matter microstructure in the central nervous system. The aim of this study was to examine the DTI metrics of the cervical spinal cord and the brainstem up to the midbrain in patients with idiopathic restless legs (RLS) compared to matched healthy controls. METHODS DTI analysis of the cervical spinal cord and the brainstem up into the midbrain was performed in 25 patients with idiopathic RLS and 25 matched healthy controls. Data analysis in the brain was performed by voxelwise comparison of fractional anisotropy (FA) maps at group level. Cervical spinal cord data analysis was performed by slicewise analysis of averaged FA values in axial slices along the spinal cord. RESULTS Voxelwise comparison of FA maps in the brainstem showed significant microstructural alterations in two clusters in the midbrain bilaterally. Slicewise comparison of the FA maps in the cervical spinal cord showed a trend for lower FA values at the level of the second and third vertebra area in the patient sample. CONCLUSIONS The imaging data suggest that significant alterations in the midbrain in RLS can be visualized by DTI and might correlate to a macroscopically subtle process with changes of the tissue microstructure in the corresponding tracts. An additional area of interest is regionally clustered in the upper cervical spinal cord with a tendency toward altered diffusion metrics. These results might be addressed by further studies, e.g., at higher magnetic field strengths.
Collapse
Affiliation(s)
| | | | | | - Magdolna Hornyak
- Department of Neurology, University of Ulm, Ulm, Germany.,Neuropsychiatrisches Zentrum Erding/München, Erding, Germany
| | - Jan Kassubek
- Department of Neurology, University of Ulm, Ulm, Germany
| |
Collapse
|
8
|
Moccia M, Erro R, Picillo M, Santangelo G, Spina E, Allocca R, Longo K, Amboni M, Palladino R, Assante R, Pappatà S, Pellecchia MT, Barone P, Vitale C. A Four-Year Longitudinal Study on Restless Legs Syndrome in Parkinson Disease. Sleep 2016; 39:405-12. [PMID: 26564123 DOI: 10.5665/sleep.5452] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 08/14/2015] [Indexed: 11/03/2022] Open
Abstract
STUDY OBJECTIVES Restless legs syndrome (RLS) prevalence estimates range from 0% to 52% in Parkinson disease (PD), but the causal relationship between the two disorders is still debated. The present study aims to evaluate RLS prevalence in de novo PD subjects, its incidence during the first 4 years from diagnosis, and possible relationships with clinical, laboratory, and neuroradiological data. METHODS One hundred nine newly diagnosed, drug-naïve PD subjects were evaluated at the time of PD diagnosis, and after 2- and 4-years. RLS diagnosis was performed with the RLS Diagnostic Index at each visit. Motor features, additional non-motor symptoms (NMS), and concomitant dopaminergic and nondopaminergic treatments were also gathered. Moreover, at baseline, 65 subjects were randomly selected to undergo a FP-CIT SPECT to study dopamine transporter availability. RESULTS RLS prevalence rose from 4.6% at baseline evaluation to 6.5% after 2 years and to 16.3% after 4 years (P = 0.007). A multinomial logistic stepwise regression model selected NMS Questionnaire items more likely to be associated with RLS at diagnosis (insomnia, OR = 15.555; P = 0.040) and with occurrence of RLS during follow-up (dizziness, OR = 1.153; P = 0.022; and daytime sleepiness; OR = 9.557; P = 0.001), as compared to patients without RLS. Older age was more likely associated to increased RLS occurrence during follow-up in a random effect logistic regression model (OR = 1.187; P = 0.036). A multinomial logistic stepwise model found increased dopaminergic transporter availability of affected caudate and putamen to be more likely associated with RLS presence at diagnosis (n = 5; OR = 75.711; P = 0.077), and RLS occurrence during follow-up (n = 16; OR = 12.004; P = 0.059), respectively, as compared to patients without RLS (n = 88). CONCLUSIONS RLS is present since PD diagnosis, and increases in prevalence during the course of PD. PD subjects with RLS have higher age at PD onset, more preserved dopaminergic pathways, and worse sleep and cardiovascular disturbances.
Collapse
Affiliation(s)
- Marcello Moccia
- Department of Neurosciences, Reproductive Sciences and Odontostomatology, Federico II University, Naples, Italy
| | - Roberto Erro
- Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, London, UK.,Department of Neurological and Movement Sciences, University of Verona, Policlinico Borgo Roma, Verona, Italy
| | - Marina Picillo
- Center for Neurodegenerative Diseases (CEMAND), Neuroscience Section, Department of Medicine, University of Salerno, Salerno, Italy.,Morton and Gloria Shulman Movement Disorders Clinic and the Edmond J. Safra Program in Parkinson's Disease, Division of Neurology, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Gabriella Santangelo
- Department of Psychology, Neuropsychology Laboratory, Second University of Naples, Caserta, Italy.,IDC Hermitage-Capodimonte, Naples, Italy
| | - Emanuele Spina
- Department of Neurosciences, Reproductive Sciences and Odontostomatology, Federico II University, Naples, Italy
| | - Roberto Allocca
- Department of Neurosciences, Reproductive Sciences and Odontostomatology, Federico II University, Naples, Italy
| | | | | | - Raffaele Palladino
- Department of Primary Care and Public Health, Imperial College, London, UK.,Department of Public Health, Federico II University, Naples, Italy
| | - Roberta Assante
- Department of Advanced Biomedical Sciences, University Federico II, Naples, Italy
| | - Sabina Pappatà
- Institute of Biostructure and Bioimaging, National Research Council, Naples, Italy
| | - Maria Teresa Pellecchia
- Center for Neurodegenerative Diseases (CEMAND), Neuroscience Section, Department of Medicine, University of Salerno, Salerno, Italy
| | - Paolo Barone
- Center for Neurodegenerative Diseases (CEMAND), Neuroscience Section, Department of Medicine, University of Salerno, Salerno, Italy
| | - Carmine Vitale
- IDC Hermitage-Capodimonte, Naples, Italy.,Department of Motor Sciences, University Parthenope, Naples, Italy
| |
Collapse
|
9
|
Peric S, Pavlovic A, Ralic V, Dobricic V, Basta I, Lavrnic D, Rakocevic Stojanovic V. Transcranial sonography in patients with myotonic dystrophy type 1. Muscle Nerve 2014; 50:278-82. [PMID: 24395217 DOI: 10.1002/mus.24162] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 12/16/2013] [Accepted: 12/31/2013] [Indexed: 12/16/2022]
Abstract
INTRODUCTION In this study we analyzed transcranial sonography (TCS) in patients with myotonic dystrophy type 1 (DM1). METHODS This cross-sectional study included 66 DM1 patients and 55 matched healthy controls (HCs). Echogenicity of the brainstem raphe (BR) and substantia nigra (SN) and third ventricle width (DTV) were assessed by TCS. RESULTS BR hypoechogenicity was more common in DM1 patients than in HCs (37.7% vs. 7.8%, P < 0.01). Patients with depression or fatigue were more likely to have BR hypoechogenicity (80.0% vs. 29.4%, P < 0.01 and 51.9% vs. 24.2%, P < 0.05, respectively). Both hypoechogenicity and hyperechogenicity of SN were more frequent in DM1 patients than in controls (26.2% vs. 10.9% and 13.1% vs. 1.8%, respectively, P < 0.01). DTV was increased in DM1 patients compared with HCs (6.0 ± 1.4 vs. 4.9 ± 0.9 mm, P < 0.01). CONCLUSION TCS can offer new insight into structural changes of several cerebral areas in patients with DM1.
Collapse
Affiliation(s)
- Stojan Peric
- Neurology Clinic, Clinical Center of Serbia, School of Medicine, University of Belgrade, 6 Dr Subotica Street, 11000, Belgrade, Serbia
| | | | | | | | | | | | | |
Collapse
|
10
|
Slow EJ, Postuma RB, Lang AE. Implications of nocturnal symptoms towards the early diagnosis of Parkinson's disease. J Neural Transm (Vienna) 2014; 121 Suppl 1:S49-57. [PMID: 24500032 DOI: 10.1007/s00702-014-1168-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 01/22/2014] [Indexed: 02/02/2023]
Abstract
Nocturnal symptoms are frequent in Parkinson disease (PD) and consist of nocturnal sleep disorders such as REM sleep behavior disorder (RBD) and restless legs syndrome. There is an increasing need for reliable, early, pre-motor diagnosis of PD, since motor symptoms occur when there is already significant neuronal loss. Recent prospective studies have shown that over 80% of idiopathic RBD patients over time converted to PD and related synucleinopathies. RBD patients have autonomic, visual, and olfactory dysfunction as well as neuroimaging abnormalities similar to those seen in PD. Studies have shown that neuroimaging abnormalities and visual and olfactory dysfunction can help predict which RBD patients will likely convert to a neurodegenerative diagnosis within a short follow-up period. These factors make RBD an ideal population for prediction to PD conversion, allowing future testing and eventual use of neuroprotective strategies.
Collapse
Affiliation(s)
- Elizabeth J Slow
- Division of Neurology, Movement Disorders Center, Toronto Western Hospital, University of Toronto, 399 Bathurst St, 7 McL, Toronto, ON, M5T 2S8, Canada
| | | | | |
Collapse
|
11
|
Berg D, Steinberger JD, Warren Olanow C, Naidich TP, Yousry TA. Milestones in magnetic resonance imaging and transcranial sonography of movement disorders. Mov Disord 2011; 26:979-92. [DOI: 10.1002/mds.23766] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
|