Neuroradiology Journal最新文献_第9页

Automated segmentation of ventricular volumes and subarachnoid hemorrhage from computed tomography images: Evaluation of a rule-based pipeline approach. 从计算机断层扫描图像自动分割心室容积和蛛网膜下腔出血：基于规则的流水线方法评估。

IF 1.3

Neuroradiology Journal Pub Date : 2024-06-13 DOI: 10.1177/19714009241260791

Mitchell Butler, Parin Shah, Burce Ozgen, Edward A Michals, Joseph R Geraghty, Fernando D Testai, Biswajit Maharathi, Jeffrey A Loeb

{"title":"Automated segmentation of ventricular volumes and subarachnoid hemorrhage from computed tomography images: Evaluation of a rule-based pipeline approach.","authors":"Mitchell Butler, Parin Shah, Burce Ozgen, Edward A Michals, Joseph R Geraghty, Fernando D Testai, Biswajit Maharathi, Jeffrey A Loeb","doi":"10.1177/19714009241260791","DOIUrl":"10.1177/19714009241260791","url":null,"abstract":"Changes in ventricular size, related to brain edema and hydrocephalus, as well as the extent of hemorrhage are associated with adverse outcomes in patients with subarachnoid hemorrhage (SAH). Frequently, these are measured manually using consecutive non-contrast computed tomography scans. Here, we developed a rule-based approach which incorporates both intensity and spatial normalization and utilizes user-defined thresholds and anatomical templates to segment both lateral ventricle (LV) and SAH blood volumes automatically from CT images. The algorithmic segmentations were evaluated against two expert neuroradiologists on representative slices from 20 admission scans from aneurysmal SAH patients. Previous methods have been developed to automate this time-consuming task, but they lack user feedback and are hard to implement due to large-scale data and complex design processes. Our results using automatic ventricular segmentation aligned well with expert reviewers with a median Dice coefficient of 0.81, AUC of 0.91, sensitivity of 81%, and precision of 84%. Automatic segmentation of SAH blood was most reliable near the base of the brain with a median Dice coefficient of 0.51, an AUC of 0.75, precision of 68%, and sensitivity of 50%. Ultimately, we developed a rule-based method that is easily adaptable through user feedback, generates spatially normalized segmentations that are comparable regardless of brain morphology or acquisition conditions, and automatically segments LV with good overall reliability and basal SAH blood with good precision. Our approach could benefit longitudinal studies in patients with SAH by streamlining assessment of edema and hydrocephalus progression, as well as blood resorption.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"19714009241260791"},"PeriodicalIF":1.3,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11571338/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141312031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetoencephalography for the pediatric population, indications, acquisition and interpretation for the clinician. 儿科脑磁图，临床医生的适应症、获取和解读。

IF 1.3

Neuroradiology Journal Pub Date : 2024-06-12 DOI: 10.1177/19714009241260801

Adam A Dmytriw, Aristides Hadjinicolaou, Georgios Ntolkeras, Eleonora Tamilia, Matthew Pesce, Laura F Berto, P Ellen Grant, Elizabeth Pang, Banu Ahtam

{"title":"Magnetoencephalography for the pediatric population, indications, acquisition and interpretation for the clinician.","authors":"Adam A Dmytriw, Aristides Hadjinicolaou, Georgios Ntolkeras, Eleonora Tamilia, Matthew Pesce, Laura F Berto, P Ellen Grant, Elizabeth Pang, Banu Ahtam","doi":"10.1177/19714009241260801","DOIUrl":"10.1177/19714009241260801","url":null,"abstract":"Magnetoencephalography (MEG) is an imaging technique that enables the assessment of cortical activity via direct measures of neurophysiology. It is a non-invasive and passive technique that is completely painless. MEG has gained increasing prominence in the field of pediatric neuroimaging. This dedicated review article for the pediatric population summarizes the fundamental technical and clinical aspects of MEG for the clinician. We discuss methods tailored for children to improve data quality, including child-friendly MEG facility environments and strategies to mitigate motion artifacts. We provide an in-depth overview on accurate localization of neural sources and different analysis methods, as well as data interpretation. The contemporary platforms and approaches of two quaternary pediatric referral centers are illustrated, shedding light on practical implementations in clinical settings. Finally, we describe the expanding clinical applications of MEG, including its pivotal role in presurgical evaluation of epilepsy patients, presurgical mapping of eloquent cortices (somatosensory and motor cortices, visual and auditory cortices, lateralization of language), its emerging relevance in autism spectrum disorder research and potential future clinical applications, and its utility in assessing mild traumatic brain injury. In conclusion, this review serves as a comprehensive resource of clinicians as well as researchers, offering insights into the evolving landscape of pediatric MEG. It discusses the importance of technical advancements, data acquisition strategies, and expanding clinical applications in harnessing the full potential of MEG to study neurological conditions in the pediatric population.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"19714009241260801"},"PeriodicalIF":1.3,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11571317/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141307130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An extremely rare complication during carotid artery stenting using a Wallstent: Migration of a stent holder of a Carotid Wallstent. 使用 Wallstent 支架进行颈动脉支架置入术时出现的一种极为罕见的并发症：颈动脉壁支架的支架支架移位。

IF 1.3

Neuroradiology Journal Pub Date : 2024-06-10 DOI: 10.1177/19714009241260799

Hideo Chihara, Yoshinori Maki, Taketo Hatano

{"title":"An extremely rare complication during carotid artery stenting using a Wallstent: Migration of a stent holder of a Carotid Wallstent.","authors":"Hideo Chihara, Yoshinori Maki, Taketo Hatano","doi":"10.1177/19714009241260799","DOIUrl":"10.1177/19714009241260799","url":null,"abstract":"Background: Carotid artery stenting (CAS) is an established treatment for internal carotid artery stenosis (ICS). The Carotid Wallstent is commonly used as a stent device in CAS procedures. Rare complications associated with the use of the Carotid Wallstent in CAS procedures include delayed shortening and incomplete stent expansion due to displacement of a marker ring. However, there have been no previous reports of a stent holder becoming unpredictably detached from a Carotid Wallstent during a procedure, requiring the additional deployment of another Carotid Wallstent.Case presentation: The case of a 72-year-old man with progressive ICS is described. Since the ICS was resistant to medical treatment, CAS was planned to prevent ischemic events. During the procedure, a Mo.Ma Ultra and a carotid guardwire were used for proximal and distal protection, respectively. Following the introduction of those protective devices, a Carotid Wallstent was deployed at the stenotic lesion of the ICS. After the deployment of the Carotid Wallstent, a stent holder unpredictably detached was identified in the lumen of the Carotid Wallstent. Since it was impossible to mechanically retrieve the detached stent holder, another Carotid Wallstent was deployed to trap the substance. Postoperatively, the substance was identified as a stent holder of the first Carotid Wallstent.Conclusion: This is the first report of an extremely rare complication concerning a Carotid Wallstent in CAS.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"19714009241260799"},"PeriodicalIF":1.3,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11571291/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141296928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intramyelinic edema manifesting as central white matter diffusion restriction associated with brain contusion in pediatric patients. 髓鞘内水肿表现为与小儿脑挫伤相关的中央白质弥散受限。

IF 1.3

Neuroradiology Journal Pub Date : 2024-06-10 DOI: 10.1177/19714009241260796

Phuong Nguyen, Mehmet Albayram, Ibrahim Tuna

引用次数: 0

Vertebral artery wall inflammation suspected as the cause of cryptogenic ischemic stroke developing during the recovery period of COVID-19. 怀疑椎动脉壁炎症是 COVID-19 恢复期间发生隐源性缺血性中风的原因。

IF 1.2

Neuroradiology Journal Pub Date : 2024-06-01 Epub Date: 2023-08-11 DOI: 10.1177/19714009231193159

Satoru Hayashi, Yo Nishimoto, Yongran Yanase, Yukiya Okune, Keita Matsuoka, Shota Nishimoto, Koji Hosoda, Masatoshi Negishi

{"title":"Vertebral artery wall inflammation suspected as the cause of cryptogenic ischemic stroke developing during the recovery period of COVID-19.","authors":"Satoru Hayashi, Yo Nishimoto, Yongran Yanase, Yukiya Okune, Keita Matsuoka, Shota Nishimoto, Koji Hosoda, Masatoshi Negishi","doi":"10.1177/19714009231193159","DOIUrl":"10.1177/19714009231193159","url":null,"abstract":"Coronavirus disease-2019 (COVID-19) can cause acute ischemic stroke (AIS) due to large vessel occlusion (LVO). Some cases of COVID-19-related LVO are known to be resistant to mechanical thrombectomy and have different characteristics from non-COVID-19-related LVO. Inflammation of the occluded arterial wall is suspected as one of the causes of such differences, but the exact mechanism is not fully understood. A 52-year-old man suffered from AIS due to left vertebral artery (VA) occlusion during the recovery period after mild COVID-19. Successful recanalization of the left VA was achieved with antithrombotic therapy, but a late and reversible edematous lesion appeared in part of the brainstem adjacent to the left VA, with abnormal enhancement in both the left VA wall and medulla oblongata on postcontrast magnetic resonance imaging. We suggest that the left VA wall inflammation, induced by COVID-19, caused the ischemic stroke and extended to the brainstem, and an incidental thrombosed unruptured aneurysm of the left VA accelerated these changes. This case provides the first evidence of LVO after COVID-19 in which the pathological conditions in the brainstem adjacent to the affected artery could be observed with neuroimaging and inflammation of the arterial wall was indirectly confirmed. Physicians should be aware that unconventional ischemic stroke may develop in some patients during the recovery period after COVID-19.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"366-371"},"PeriodicalIF":1.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11138334/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10033655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recurrent sporadic malignant triton tumor in the carotid sheath in the absence of neurofibromatosis. 无神经纤维瘤病的颈动脉鞘复发性散发性恶性三叉神经瘤。

IF 1.2

Neuroradiology Journal Pub Date : 2024-06-01 Epub Date: 2023-08-22 DOI: 10.1177/19714009231196476

George K Vilanilam, Divya Nayar, Ishan Pandey, Surjith Vattoth

{"title":"Recurrent sporadic malignant triton tumor in the carotid sheath in the absence of neurofibromatosis.","authors":"George K Vilanilam, Divya Nayar, Ishan Pandey, Surjith Vattoth","doi":"10.1177/19714009231196476","DOIUrl":"10.1177/19714009231196476","url":null,"abstract":"Malignant Triton Tumors (MTTs) are a rare and aggressive subtype of malignant peripheral nerve sheath tumors (MPNSTs), often associated with neurofibromatosis type 1. This case report describes a unique instance of recurrent sporadic MTT within the carotid sheath in a 33-year-old male without any personal or familial history of neurofibromatosis. The patient initially presented with a biopsy-confirmed MTT in the right neck, involving the carotid body and brachial plexus, and underwent partial resection, radiation therapy, and chemotherapy. Six months later, the patient presented with recurrent MTT, and subsequently underwent radical tumor resection, segmental right carotid artery resection, and deep femoral vein interposition. Recovery was complicated by hematoma formation, and the patient developed vocal fold paralysis and a left vocal fold cyst, necessitating further surgeries. Yearly follow-ups for 8 years revealed no recurrence. This case emphasizes the importance of comprehensive patient evaluation, including clinical history, imaging, and biopsy findings, for accurate diagnosis and prompt surgical intervention in managing such rare and aggressive tumors. Further research is needed to identify novel therapies and improve survival rates for patients with MTTs.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"376-380"},"PeriodicalIF":1.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11138328/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10053768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Endovascular treatment of traumatic anterior communicating artery-cavernous sinus fistula. 外伤性前交通动脉-海绵窦瘘的血管内治疗。

IF 1.2

Neuroradiology Journal Pub Date : 2024-06-01 Epub Date: 2023-08-14 DOI: 10.1177/19714009231196469

Jinlu Yu

引用次数: 0

Association between vertebral artery dominance and basilar artery curvature in migraineurs: an anatomical magnetic resonance imaging study. 偏头痛患者椎动脉优势与基底动脉弯曲之间的关系：解剖学磁共振成像研究。

IF 1.2

Neuroradiology Journal Pub Date : 2024-06-01 Epub Date: 2023-12-28 DOI: 10.1177/19714009231224444

Ebru Otu, Selva Şen, Tuğrul Örmeci, Neslihan Yüzbaşıoğlu

{"title":"Association between vertebral artery dominance and basilar artery curvature in migraineurs: an anatomical magnetic resonance imaging study.","authors":"Ebru Otu, Selva Şen, Tuğrul Örmeci, Neslihan Yüzbaşıoğlu","doi":"10.1177/19714009231224444","DOIUrl":"10.1177/19714009231224444","url":null,"abstract":"Background and purposes: Numerous studies demonstrate a link between cerebrovascular alterations and migraine pathogenesis. We investigated the association between migraine and vertebral artery dominance (VAD), basilar artery (BA) curvature, and elongation.Materials and methods: This cross-sectional MRI study included 74 migraine patients and 74 control subjects aged between 18 and 55 years. Diameters of the intracranial part of the vertebral artery (VA) and BA, height of the BA bifurcation, and total lateral displacement of the BA were measured. In addition, we investigated the directional relationship between VAD and BA curvature.Results: There were no statistically significant differences between the groups regarding VA and BA diameters and total lateral displacement of the BA. The height of the BA bifurcation was found to be significantly higher in migraine patients compared to controls (p = 0.002). The left-side VAD was more frequent in migraine patients compared to control subjects (60.8% (45/74) vs 41.9% (31/74), p = 0.001). In migraine patients, particularly those with aura (MwA) patients, with left-side VAD, the rate of BA displacement to the right side is significantly higher than those with right-side VAD or non-VAD (p = 0.022). Also, we found that total lateral displacement of the BA is correlated with VA asymmetry in patients with MwA (r = 0.538, p = 0.007).Conclusion: VAD and its opposite-directional relationship with the lateral displacement of the BA may be associated with migraine pathophysiology. Together with aging, this association may contribute to changes in the vertebrobasilar system (VBS) geometry which may result in increased risk for posterior circulation infarction (PCI) in migraineurs.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"314-322"},"PeriodicalIF":1.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11138339/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139049550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Imaging of hypodense gliotic lesions in photon counting computed tomography using virtual monoenergetic images. 利用虚拟单能量图像对光子计数计算机断层扫描中的低密度胶质病变进行成像。

IF 1.3

Neuroradiology Journal Pub Date : 2024-06-01 Epub Date: 2024-03-15 DOI: 10.1177/19714009241240056

Denise Schoenbeck, Alexander Sacha, Julius Henning Niehoff, Christoph Moenninghoff, Jan Borggrefe, Jan Robert Kroeger, Arwed Elias Michael

{"title":"Imaging of hypodense gliotic lesions in photon counting computed tomography using virtual monoenergetic images.","authors":"Denise Schoenbeck, Alexander Sacha, Julius Henning Niehoff, Christoph Moenninghoff, Jan Borggrefe, Jan Robert Kroeger, Arwed Elias Michael","doi":"10.1177/19714009241240056","DOIUrl":"10.1177/19714009241240056","url":null,"abstract":"Objectives: Glioses appear as hypodense lesions in non-contrast CT examinations of the head. Photon counting CT (PCCT) enables the calculation of virtual monoenergetic images (VMI). The aim of this study is to investigate in which VMI hypodense gliotic lesions can be delineated best.Materials and methods: 35 patients with an MRI-confirmed gliotic lesion and a non-contrast PCCT of the head were retrospectively included. All available VMI from 40 keV to 190 keV were calculated. In a quantitative analysis, conventional image quality parameters were calculated, in particular the contrast-to-noise ratio (CNR) of the hypodense lesion compared to the white matter. In a qualitative analysis, selected VMI were rated by experienced radiologists.Results: The absolute maximum of CNR was 8.12 ± 5.64 in the VMI 134 keV, in post hoc testing, there were significant differences in comparison to VMI with keV ≤110 and keV ≥180 (corrected p < .05). In the qualitative analysis, there were only very slight differences in the rating of the VMI with 66 keV, 80 keV, 100 keV, and 134 keV with overall low agreement between the readers.Conclusions: The quantitative superiority of VMI 134 keV for the delineation of hypodense gliotic lesions did not translate into a superiority in the qualitative analysis. Therefore, it remains uncertain if the reconstruction of a high keV VMIs for the detection of hypodense gliotic lesions is useful in everyday clinical practice. However, more studies, are necessary to further assess this issue.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"336-341"},"PeriodicalIF":1.3,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11138327/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140137253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Finding its place on the spectrum of pituitary duplication disorders, duplication of pituitary stalk: A case report with brief review of literature. 垂体柄重复在垂体重复疾病谱中占有一席之地：病例报告及文献综述。

IF 1.2

Neuroradiology Journal Pub Date : 2024-06-01 Epub Date: 2023-07-28 DOI: 10.1177/19714009231193157

Humsheer Singh Sethi, Beena Agarwal, Satya Mohapatra, Adyakinkar Panda

{"title":"Finding its place on the spectrum of pituitary duplication disorders, duplication of pituitary stalk: A case report with brief review of literature.","authors":"Humsheer Singh Sethi, Beena Agarwal, Satya Mohapatra, Adyakinkar Panda","doi":"10.1177/19714009231193157","DOIUrl":"10.1177/19714009231193157","url":null,"abstract":"Pituitary gland duplication is a rare abnormality and isolated duplication of the pituitary stalk without any pituitary anomaly is an even rarer entity with this case being the first documented case till date. Although incidentally discovered cases of duplication of pituitary gland (DPG) have been reported, sometimes with a duplicated pituitary stalk, patients with this disorder usually present with other craniofacial abnormalities. Consequently, DPG plus syndrome is used as it is often accompanied by endocrine disturbances and pathologies such as median cleft face syndrome, ocular disorders, craniocervical bony abnormalities, vascular anomalies and tuberomammillary masses. Since this is the first reported case without any additional pituitary gland anomaly, we propose the acronym DPS (duplication of pituitary stalk) to be used to unify this entity as we are certain that much like the previously described pituitary duplication disorders, more cases will be documented independently rather than under the umbrella of pituitary duplication disorders. This is critical as the life expectancy (age of diagnosis) in the cases reviewed in our study is as good as normal population with no obvious increase in mortality as compared to existing pituitary duplication syndromes. We present a case report of a 2 year 7 month old girl who was referred by the paediatrician for evaluation of premature thelarche. The duplication of the pituitary stalk along with mega cisterna magna and tuberomammillary fusion was the only positive finding on imaging with the pituitary gland being absolutely normal.","PeriodicalId":47358,"journal":{"name":"Neuroradiology Journal","volume":" ","pages":"357-360"},"PeriodicalIF":1.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11138330/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9885498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0