Neuroradiology最新文献

{"title":"Choroid plexus volume changes in multiple sclerosis: insights from a systematic review and meta-analysis of magnetic resonance imaging studies.","authors":"Shahriar Kolahi, Diana Zarei, Mahbod Issaiy, Madjid Shakiba, Narges Azizi, Kavous Firouznia","doi":"10.1007/s00234-024-03439-3","DOIUrl":"10.1007/s00234-024-03439-3","url":null,"abstract":"<p><strong>Purpose: </strong>Multiple sclerosis (MS) is a chronic autoimmune disease characterized by the destruction of the myelin sheath within the central nervous system. The etiology of MS involves a complex interplay of genetic, environmental, and immunological factors. Recent studies indicated the potential role of the choroid plexus (CP) in the pathogenesis and progression of MS. This systematic review aims to assess existing research on the volume alterations of the CP in MS patients compared to the normal population.</p><p><strong>Methods: </strong>A comprehensive search was conducted across databases including PubMed, Embase, Scopus, and Web of Science up to June 2024. Data from the included studies were synthesized using a meta-analytical approach with a random-effects model, assessing heterogeneity with the I² and Tau-squared indices.</p><p><strong>Results: </strong>We included 17 studies in this systematic review. The meta-analysis, which included data from eight studies reporting CP volume relative to TIV, found a statistically significant increase in CP volume in MS patients compared to healthy controls (HCs). The SMD was 0.77 (95% CI: 0.61 to 0.93), indicating a large effect size. This analysis showed no heterogeneity (I² = 0%). A separate meta-analysis was conducted using five studies that reported CP volume as normalized volume, resulting in an SMD of 0.63 (95% CI: 0.2-1.06).</p><p><strong>Conclusion: </strong>This study demonstrates an increase in CP volume among MS patients compared to HCs, implying the potential involvement of CP in MS pathogenesis and/or progression. These results show that CP might serve as a radiological indicator in the diagnosis and prognosis of MS.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"1869-1886"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The benefit of optimizing recanalization during mechanical thrombectomy in patients with acute ischemic stroke depends on preprocedural tissue-level collateralization.","authors":"Paweł Wrona, Dominik Wróbel, Paweł Mizera, Joanna Jóźwik, Klaudia Jakobschy, Kaja Zdrojewska, Tomasz Homa, Katarzyna Sawczyńska, Tadeusz Popiela, Agnieszka Słowik, Wojciech Turaj","doi":"10.1007/s00234-024-03443-7","DOIUrl":"10.1007/s00234-024-03443-7","url":null,"abstract":"<p><strong>Purpose: </strong>Thrombolysis in Cerebral Infarction (TICI) 3 represents the optimal angiographic outcome following mechanical thrombectomy (MT) for acute ischemic stroke (AIS). Although it is known to yield better outcomes than TICI 2b, the influence of preprocedural cerebral hemodynamics on the clinical advantage of TICI 3 over TICI 2b remains unexplored.</p><p><strong>Methods: </strong>This single-center retrospective analysis involved patients with anterior circulation AIS who underwent successful recanalization during MT at the Comprehensive Stroke Center, University Hospital, Krakow between January 2019 and July 2023. We assessed the benefit of achieving TICI 2c/3 over TICI 2b on the basis of preprocedural computed perfusion imaging results, primarily focusing on early infarct volume (EIV) and tissue-level collaterals indicated by hypoperfusion intensity ratio (HIR). Good functional outcome (GFO) was defined as a modified Rankin Score < 3 on day 90.</p><p><strong>Results: </strong>The study comprised 612 patients, of whom 467 (76.3%) achieved TICI 2c/3. GFO was more frequent in the TICI 2c/3 group (54.5% vs 69.4%, p < 0.001). There was interaction between the recanalization status and both HIR (Pi = 0.042) and EIV (Pi = 0.012) in predicting GFO, with disproportionately higher impact of HIR and EIV in TICI 2b group. The benefit from TICI 2c/3 over TICI 2b was insignificant among patients with good collaterals, defined by HIR < 0.3 (odds ratio:1.36 [0.58-3.18], p = 0.483).</p><p><strong>Conclusion: </strong>TICI 2c/3 improves patient functional outcomes compared to TICI 2b regardless of EIV. However, such angiographic improvement may be clinically futile in patients with good tissue-level collateralization. Our findings suggest that preprocedural HIR should be considered when optimization of recanalization is considered during MT.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"2023-2031"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11535073/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141996229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defining tumor growth in vestibular schwannomas: a volumetric inter-observer variability study in contrast-enhanced T1-weighted MRI.","authors":"Stefan Cornelissen, Sammy M Schouten, Patrick P J H Langenhuizen, Suan Te Lie, Henricus P M Kunst, Peter H N de With, Jeroen B Verheul","doi":"10.1007/s00234-024-03416-w","DOIUrl":"10.1007/s00234-024-03416-w","url":null,"abstract":"<p><strong>Purpose: </strong>For patients with vestibular schwannomas (VS), a conservative observational approach is increasingly used. Therefore, the need for accurate and reliable volumetric tumor monitoring is important. Currently, a volumetric cutoff of 20% increase in tumor volume is widely used to define tumor growth in VS. The study investigates the tumor volume dependency on the limits of agreement (LoA) for volumetric measurements of VS by means of an inter-observer study.</p><p><strong>Methods: </strong>This retrospective study included 100 VS patients who underwent contrast-enhanced T1-weighted MRI. Five observers volumetrically annotated the images. Observer agreement and reliability was measured using the LoA, estimated using the limits of agreement with the mean (LOAM) method, and the intraclass correlation coefficient (ICC).</p><p><strong>Results: </strong>The 100 patients had a median average tumor volume of 903 mm³ (IQR: 193-3101). Patients were divided into four volumetric size categories based on tumor volume quartile. The smallest tumor volume quartile showed a LOAM relative to the mean of 26.8% (95% CI: 23.7-33.6), whereas for the largest tumor volume quartile this figure was found to be 7.3% (95% CI: 6.5-9.7) and when excluding peritumoral cysts: 4.8% (95% CI: 4.2-6.2).</p><p><strong>Conclusion: </strong>Agreement limits within volumetric annotation of VS are affected by tumor volume, since the LoA improves with increasing tumor volume. As a result, for tumors larger than 200 mm³, growth can reliably be detected at an earlier stage, compared to the currently widely used cutoff of 20%. However, for very small tumors, growth should be assessed with higher agreement limits than previously thought.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"2033-2042"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11534841/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141559370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-expanding intracranial drug-eluting stent system in patients with symptomatic intracranial atherosclerotic stenosis: initial experience and midterm angiographic follow-up.","authors":"Feifan Zhang, Jinbiao Yao, Pei Wu, Qiaowei Wu, Chunxu Li, Jinshuo Yang, Yixuan Liu, Ilgiz Gareev, Huaizhang Shi, Chunlei Wang","doi":"10.1007/s00234-024-03423-x","DOIUrl":"10.1007/s00234-024-03423-x","url":null,"abstract":"<p><strong>Background: </strong>Symptomatic intracranial atherosclerotic stenosis (ICAS) is a major cause of ischemic stroke worldwide. In patients undergoing endovascular treatment for ICAS, in-stent restenosis (ISR) is associated with ischemic stroke recurrence.</p><p><strong>Objective: </strong>Intracranial drug-eluting self-expanding stent systems (COMETIU; Sinomed Neurovita Technology Inc., CHN) are new devices for treating ICAS. This study evaluated the perioperative experience and medium-term outcomes of COMETIU in 16 patients.</p><p><strong>Methods: </strong>We prospectively analyzed 16 patients with ICAS (≥ 70% stenosis) who underwent intravascular therapy between September 4, 2022, and February 1, 2023. The primary outcome was the incidence of ISR at 6 months postoperatively. The secondary efficacy outcomes were device and technical success rates. The secondary safety outcomes included stroke or death within 30 days after the procedure and the cumulative annual rate of recurrent ischemic stroke in the target-vessel territory from 31 days to 6 months and 1 year.</p><p><strong>Results: </strong>A total of 16 patients with 16 intracranial atherosclerotic lesions were treated with 16 COMETIUs. All procedures were performed under general anesthesia with 100% device and technical success rates, with no cases of periprocedural stroke or death. The mean radiographic follow-up duration was at least 6 months postoperatively, and all patients presented for radiographic and clinical follow-up. There were no reported ischemic or hemorrhagic strokes. Angiographic follow-up for all patients revealed no cases of ISR.</p><p><strong>Conclusion: </strong>COMETIU is safe and effective for treating ICAS, with minimal risk during the procedure and a low rate of ISR during medium-term follow-up.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"2015-2022"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141559372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the newly proposed MRI criteria for diagnosing sporadic Creutzfeldt-Jakob disease.","authors":"Daniel Barber, Nicholas Trost, Christiane Stehmann, Victoria Lewis, James Doecke, Ash Jhamb, Shin-Han Leon Winata, Steven Collins","doi":"10.1007/s00234-024-03440-w","DOIUrl":"10.1007/s00234-024-03440-w","url":null,"abstract":"<p><p>Sporadic Creutzfeldt-Jakob disease (sCJD) is a frequent differential diagnostic consideration in patients with rapidly progressive dementia (RPD). Fortunately, in the last 2 decades there has been substantial cumulative improvements in sCJD biomarkers, particularly those based on imaging and cerebrospinal fluid (CSF) interrogation. Brain MRI is a very frequently employed investigation in patients with RPD, often utilized quite early in the evaluation and thereby offering a potentially key role in prompting initial concerns for sCJD. Extant conventional MRI criteria for sCJD diagnosis are relatively stringent, requiring fluid attenuated inversion recovery (FLAIR) or diffusion weighted imaging (DWI) high signal changes in 2 or more cortical regions (excluding frontal) or in both the caudate and putamen. Challenging these conventional criteria, a recent publication described improved sensitivity and unchanged specificity if MRI criteria were arguably less rigorous, requiring DWI high signal changes in only 1 or more of 7 discrete brain regions: frontal, parietal, occipital or temporal cortices, as well as the caudate, putamen or thalamus. The aim of the current study was to test the diagnostic performance of this proposed change in MRI criteria in the Australian context and compare it with conventional criteria, as well as 2 other stringent sets of criteria, predicting that a similar improved sensitivity with unchanged specificity would be observed when the proposed criteria were utilized. Sixty-five definite sCJD cases were compared with 63 age- and sex-matched controls. Radiological review of all MRIs applying the different sets of MRI criteria was undertaken by a blinded neuroradiologist, very experienced in CJD interpretation, with independent assessment of 71 MRIs performed by a second blinded neuroradiologist less experienced in sCJD imaging findings. Our study found the sensitivity of the recently proposed MRI criteria (92.3%) to be comparable to that originally reported (90-95%) and also equivalent to the conventional MRI diagnostic criteria (92.3%), while the specificities were also quite similar between the conventional MRI criteria (87.3%) and proposed criteria (85.7%), with the latter lower than previously reported. Negative predictive values and positive predictive values were also very similar between the conventional and proposed MRI criteria. Other MRI criteria assessed were associated with unacceptably low sensitivity for clinical use. Inter-rater reliability as assessed by intra-class correlation coefficients (ICC) revealed moderate reliability for the conventional and proposed MRI criteria, modestly better in the former and when the frontal lobe was retained versus excluded in comparisons.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"1907-1915"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic reference levels in interventional neuroradiology procedures - a systematic review.","authors":"Rogério Lopes, Pedro Teles, Joana Santos","doi":"10.1007/s00234-024-03445-5","DOIUrl":"10.1007/s00234-024-03445-5","url":null,"abstract":"<p><strong>Introduction: </strong>The establishment of diagnostic reference levels (DRLs) is challenge for interventional neuroradiology (INR) due to the complexity and variability of its procedures.</p><p><strong>Objective: </strong>The main objective of this systematic review is to analyse and compare DRLs in fluoroscopy-guided procedures in INR.</p><p><strong>Methods: </strong>An observational study reporting DRLs in INR procedures, specifically cerebral arteriography, cerebral aneurysm embolisation, cerebral thrombectomy, embolisation of arteriovenous malformations (AVM), arteriovenous fistulas (AVF), retinoblastoma embolisation, and spinal cord arteriography. Comprehensive literature searches for relevant studies published between 2017 and 2023 were conducted using the Scopus, PubMed, and Web of Science databases.</p><p><strong>Results: </strong>A total of 303 articles were identified through an extensive literature search, with 159 removed due to duplication. The title and abstract of 144 studies were assessed and excluded if they did not meet the inclusion criteria. Thirty-one out of the 144 articles were selected for a thorough full-text screening. Twenty-one articles were included in the review after the complete text screening.</p><p><strong>Conclusion: </strong>The different conditions of patients undergoing INR procedures pose a barrier to the standardization of DRLs; nevertheless, they are extremely important for monitoring and optimising radiological practices.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"2003-2014"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11534899/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142146085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disturbed neurovascular coupling in patients with white matter hyperintensities: potential biomarker for cognitive impairment.","authors":"Hui Li, Chao Chai, Yuanliang Xie, Huiying Wang, Xuedong Bai, You Li, Qin Zhong, Mingze Xu, Xiang Wang, Shuang Xia","doi":"10.1007/s00234-024-03459-z","DOIUrl":"https://doi.org/10.1007/s00234-024-03459-z","url":null,"abstract":"<p><strong>Purpose: </strong>To explore the neurovascular mechanisms of white matter hyperintensities (WMHs)-related cognitive impairment by introducing a neurovascular biomarker, neurovascular coupling (NVC).</p><p><strong>Methods: </strong>We applied resting-state functional magnetic resonance imaging combined with arterial spin labeling to investigate the NVC dysfunctional patterns in patients with pure WMHs. Partial correlation, mediation, and exploratory subgroup analyses were adopted to explore the relationship among WMHs, NVC dysfunction, and cognitive decline.</p><p><strong>Results: </strong>We found 21 brain regions with NVC dysfunction in patients with pure WMHs, mainly distributed in the default mode network, dorsal attention network, subcortical nucleus, and limbic system (p < 0.0125, Bonferroni correction). The NVC dysfunction of brain regions in the subcortical nucleus and limbic system correlated with the total WMHs burden and paraventricular WMHs burden (q < 0.05, FDR correction). The reduced NVC of the left amygdala partially mediated the impact of paraventricular WMHs on executive function (Mediation effect: -0.117; 95%CI: -4.042,-0.011; p < 0.05). Among the WMHs subjects without cognitive impairment, the increased NVC of the left basal ganglia significantly correlated with the MoCA score (r = 0.539, p < 0.05).</p><p><strong>Conclusion: </strong>These findings reveal an underlying neurovascular mechanism of WMHs-related cognitive impairment. The neurovascular functions of the left amygdala and left basal ganglia may involve cognitive damage and compensation, respectively, and can be used as potential biomarkers and therapeutic targets for cognitive impairment in patients with WMHs.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":"66 11","pages":"1967-1978"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142771014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional connectivity of the pediatric brain.","authors":"Maria I Argyropoulou, Vasileios G Xydis, Loukas G Astrakas","doi":"10.1007/s00234-024-03453-5","DOIUrl":"10.1007/s00234-024-03453-5","url":null,"abstract":"<p><strong>Purpose: </strong>This review highlights the importance of functional connectivity in pediatric neuroscience, focusing on its role in understanding neurodevelopment and potential applications in clinical practice. It discusses various techniques for analyzing brain connectivity and their implications for clinical interventions in neurodevelopmental disorders.</p><p><strong>Methods: </strong>The principles and applications of independent component analysis and seed-based connectivity analysis in pediatric brain studies are outlined. Additionally, the use of graph analysis to enhance understanding of network organization and topology is reviewed, providing a comprehensive overview of connectivity methods across developmental stages, from fetuses to adolescents.</p><p><strong>Results: </strong>Findings from the reviewed studies reveal that functional connectivity research has uncovered significant insights into the early formation of brain circuits in fetuses and neonates, particularly the prenatal origins of cognitive and sensory systems. Longitudinal research across childhood and adolescence demonstrates dynamic changes in brain connectivity, identifying critical periods of development and maturation that are essential for understanding neurodevelopmental trajectories and disorders.</p><p><strong>Conclusion: </strong>Functional connectivity methods are crucial for advancing pediatric neuroscience. Techniques such as independent component analysis, seed-based connectivity analysis, and graph analysis offer valuable perspectives on brain development, creating new opportunities for early diagnosis and targeted interventions in neurodevelopmental disorders, thereby paving the way for personalized therapeutic strategies.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"2071-2082"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142126197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neuromyelitis optica spectrum disorder mimicking cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy with symmetrical lesions in the temporal poles and external capsules on MRI.","authors":"Yasuyuki Kojita, Atsushi K Kono, Takahiro Yamada, Minoru Yamada, Sung-Woon Im, Takenori Kozuka, Hayato Kaida, Motoi Kuwahara, Yoshitaka Nagai, Kazunari Ishii","doi":"10.1007/s00234-024-03458-0","DOIUrl":"10.1007/s00234-024-03458-0","url":null,"abstract":"<p><p>Symmetrical lesions in the temporal poles and external capsules on brain MRI are known as radiological markers of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL); however, similar imaging findings have also been reported in neuromyelitis optica spectrum disorder (NMOSD), and this study investigated the frequency of such findings. The study included 55 NMOSD patients who met the 2015 international NMO diagnosis panel (IPND) criteria and were positive for aquaporin-4 antibodies (AQP4-Ab). Images were evaluated based on the consensus of two neuroradiologists, and brain lesions were detected in 33 patients, of whom 2 (6%) had symmetrical lesions in both the temporal poles and external capsules, and 1 (3%) had symmetrical lesions confined to the external capsules. Therefore, when symmetrical lesions in the temporal poles and external capsules are observed on MRI, NMOSD should be considered in the differential diagnosis.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"1887-1891"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142110042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diffusion tensor metrics, motor and non-motor symptoms in de novo Parkinson's disease.","authors":"Nayron Medeiros Soares, Pedro Henrique Rodrigues da Silva, Gabriela Magalhães Pereira, Renata Ferranti Leoni, Carlos Roberto de Mello Rieder, Thatiane Alves Pianoschi Alva","doi":"10.1007/s00234-024-03452-6","DOIUrl":"10.1007/s00234-024-03452-6","url":null,"abstract":"<p><strong>Introduction: </strong>Parkinson's disease (PD) is a neurodegenerative disorder characterized by dopaminergic neurons' degeneration of the substantia nigra, presenting with motor and non-motor symptoms. We hypothesized that altered diffusion metrics are associated with clinical symptoms in de novo PD patients.</p><p><strong>Methods: </strong>Fractional Anisotropy (FA) and Mean (MD), Axial (AD), and Radial Diffusivity (RD) were assessed in 55 de novo PD patients (58.62 ± 9.85 years, 37 men) and 55 age-matched healthy controls (59.92 ± 11.25 years, 34 men). Diffusion-weighted images and clinical variables were collected from the Parkinson's Progression Markers Initiative study. Tract-based spatial statistics were used to identify white matter (WM) changes, and fiber tracts were localized using the JHU-WM tractography atlas. Motor and non-motor symptoms were evaluated in patients.</p><p><strong>Results: </strong>We observed higher FA values and lower RD values in patients than controls in various fiber tracts (p-TFCE < 0.05). No significant MD or AD difference was observed between groups. Diffusion metrics of several regions significantly correlated with non-motor (state and trait anxiety and daytime sleepiness) and axial motor symptoms in the de novo PD group. No correlations were observed between diffusion metrics and other clinical symptoms evaluated.</p><p><strong>Conclusion: </strong>Our findings suggest microstructural changes in de novo PD fiber tracts; however, limited associations with clinical symptoms reveal the complexity of PD pathology. They may contribute to understanding the neurobiological changes underlying PD and have implications for developing targeted interventions. However, further longitudinal research with larger cohorts and consideration of confounding factors are necessary to elucidate the underlying mechanisms of these diffusion alterations in de novo PD.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"1955-1966"},"PeriodicalIF":2.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142073369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}