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JOURNAL ARTICLE
Daniel Barber, Nicholas Trost, Christianne Stehmman, Victoria Lewis, James Doecke, Ash Jhamb, Shin-Han Leon Winata, Steven Collins
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...
August 13, 2024: Neuroradiology
#22
JOURNAL ARTICLE
Shahriar Kolahi, Diana Zarei, Mahbod Issaiy, Madjid Shakiba, Narges Azizi, Kavous Firouznia
PURPOSE: 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...
August 6, 2024: Neuroradiology
#23
JOURNAL ARTICLE
Abhilasha Indoria, Karthik Kulanthaivelu, Chandrajit Prasad, Dwarakanath Srinivas, Shilpa Rao, Neelam Sinha, Vivek Potluri, M Netravathi, Atchayaram Nalini, Jitender Saini
BACKGROUND: Tuberculomas are prevalent in developing countries and demonstrate variable signals on MRI resulting in the overlap of the conventional imaging phenotype with other entities including glioma and brain metastasis. An accurate MRI diagnosis is important for the early institution of anti-tubercular therapy, decreased patient morbidity, mortality, and prevents unnecessary neurosurgical excision. This study aims to assess the potential of radiomics features of regular contrast images including T1W, T2W, T2W FLAIR, T1W post contrast images, and ADC maps, to differentiate between tuberculomas, high-grade-gliomas and metastasis, the commonest intra parenchymal mass lesions encountered in the clinical practice...
August 5, 2024: Neuroradiology
#24
JOURNAL ARTICLE
Akio Higuchi, Yoshihiro Kubota, Hajime Yokota, Hiroki Miyazaki, Joji Ota, Yasuaki Okafuji, Hiroyuki Takaoka, Takashi Uno
PURPOSE: Identification of the Adamkiewicz artery before aortic surgery is important for preventing postoperative complications due to spinal cord ischemia. The Adamkiewicz artery is difficult to identify due to its small diameter. Nitroglycerin has a vasodilatory effect and is used clinically to improve visualization of blood vessels on coronary computed tomography (CT) angiography. We investigated whether the vasodilatory effect of nitroglycerin could improve the ability to visualize the Adamkiewicz artery...
August 5, 2024: Neuroradiology
#25
Guorong Wang, Bingbing Yang, Xiaoxia Qu, Jian Guo, Yongheng Luo, Xiaoquan Xu, Feiyun Wu, Xiaoxue Fan, Yang Hou, Song Tian, Sicong Huang, Junfang Xian
No abstract text is available yet for this article.
August 1, 2024: Neuroradiology
#26
JOURNAL ARTICLE
Dikhra Khan, Sambit Sagar, Jasim Jaleel, Mohammad Umar, Madhavi Tripathi, Manjari Tripathi, M C Sharma, Chandrasekhar Bal
PURPOSE: This study evaluates the efficacy of SISCOS (Subtraction ictal-interictal SPECT coregistered to SPECT) in localizing the epileptogenic zone (EZ) in focal cortical dysplasia (FCD), comparing its predictive performance with MRI and post-surgical outcomes based on ILAE classification. METHODS: 84 patients with drug refractory epilepsy (DRE) who were operated and had histopathology consistent with FCD, were included in the study. All patients had undergone a complete work-up including SISCOS and MRI for EZ localization, followed by discussion in the multidisciplinary epilepsy surgery meeting prior to surgery...
July 26, 2024: Neuroradiology
#27
JOURNAL ARTICLE
Michele Porcu, Luigi Cocco, Francesco Marrosu, Riccardo Cau, Josep Puig, Jasjit S Suri, Luca Saba
INTRODUCTION: Patients with Parkinson's Disease (PD) commonly experience Olfactory Dysfunction (OD). Our exploratory study examined hippocampal volumetric and resting-state functional magnetic resonance imaging (rs-fMRI) variations in a Healthy Control (HC) group versus a cognitively normal PD group, further categorized into PD with No/Mild Hyposmia (PD-N/MH) and PD with Severe Hyposmia (PD-SH). METHODS: We calculated participants' relative Total Hippocampal Volume (rTHV) and performed Spearman's partial correlations, controlled for age and gender, to examine the correlation between rTHV and olfactory performance assessed by the Odor Stick Identification Test for the Japanese (OSIT-J) score...
July 24, 2024: Neuroradiology
#28
JOURNAL ARTICLE
Naoki Taira, Shoko Hara, Aya Namba, Yoji Tanaka, Taketoshi Maehara
PURPOSE: The aim of this study was to investigate whether the spatial coefficient of variation of arterial spin labeling (ASL-CoV) acquired in clinical settings can be used to estimate decreased cerebrovascular reactivity (CVR) measured with single-photon emission computed tomography (SPECT) and acetazolamide challenge in patients with atherosclerotic stenosis of intra- or extracranial arteries. METHODS: We evaluated the data of 27 atherosclerotic stenosis patients who underwent pseudocontinuous ASL and SPECT...
July 23, 2024: Neuroradiology
#29
JOURNAL ARTICLE
Keita Sakurai, Aya M Tokumaru, Mari Yoshida, Yuko Saito, Koichi Wakabayashi, Takashi Komori, Masato Hasegawa, Takeshi Ikeuchi, Yuichi Hayashi, Takayoshi Shimohata, Shigeo Murayama, Yasushi Iwasaki, Toshiki Uchihara, Motoko Sakai, Ichiro Yabe, Satoshi Tanikawa, Hiroshi Takigawa, Tadashi Adachi, Ritsuko Hanajima, Harutoshi Fujimura, Kentaro Hayashi, Keizo Sugaya, Kazuko Hasegawa, Terunori Sano, Masaki Takao, Osamu Yokota, Tomoko Miki, Michio Kobayashi, Nobutaka Arai, Takuya Ohkubo, Takanori Yokota, Keiko Mori, Masumi Ito, Chiho Ishida, Jiro Idezuka, Yasuko Toyoshima, Masato Kanazawa, Masashi Aoki, Takafumi Hasegawa, Hirohisa Watanabe, Atsushi Hashizume, Hisayoshi Niwa, Keizo Yasui, Keita Ito, Yukihiko Washimi, Akatsuki Kubota, Tatsushi Toda, Kenji Nakashima, Ikuko Aiba
PURPOSE: Due to the indistinguishable clinical features of corticobasal syndrome (CBS), the antemortem differentiation between corticobasal degeneration (CBD) and its mimics remains challenging. However, the utility of conventional magnetic resonance imaging (MRI) for the diagnosis of CBD has not been sufficiently evaluated. This study aimed to investigate the diagnostic performance of conventional MRI findings in differentiating pathologically confirmed CBD from its mimics. METHODS: Semiquantitative visual rating scales were employed to assess the degree and distribution of atrophy and asymmetry on conventional T1-weighted and T2-weighted images...
July 22, 2024: Neuroradiology
#30
JOURNAL ARTICLE
Joshua Loewenstern, Pierce McMahon, Daiqi Wang, Andrew D Schweitzer, Gayle Salama, Sara Strauss
INTRODUCTION: Identifying spontaneous CSF leaks can be difficult on CT myelography (CTM) in patients with suspected spontaneous intracranial hypotension (SIH). The current study compared renal collecting system (RCS) density during CTM in patients with suspected SIH relative to non-SIH controls and evaluated the overall utility as an indirect sign of spontaneous CSF leak in patients with SIH. METHODS: All CTM performed over an 8-year period (n = 392) were retrospectively reviewed and included cases (n = 295) were divided into groups consisting of SIH patients with (n = 35) or without (n = 77) confirmed CSF leak on CTM and non-SIH controls (n = 183)...
July 20, 2024: Neuroradiology
#31
JOURNAL ARTICLE
Doo Young Lee, Ka Eum Choi, Kyunghwa Han, Seo Hee Choi, Narae Lee, Sung Soo Ahn, Jong Hee Chang, Se Hoon Kim, Seung-Koo Lee, Yae Won Park
PURPOSE: To investigate whether qualitative and quantitative imaging phenotypes can predict the grade of oligodendroglioma. METHODS: Retrospective chart and imaging reviews were conducted on 180 adults with oligodendroglioma (IDH-mutant and 1p/19q codeleted) between 2005 and 2021. Qualitative imaging characteristics including tumor location, calcification, gliomatosis cerebri, cystic change, necrosis, and infiltrative pattern were analyzed. Quantitative imaging assessment was performed from the tumor mask via automatic segmentation to calculate total, contrast-enhancing (CE), non-enhancing (NE), and necrotic tumor volumes...
July 17, 2024: Neuroradiology
#32
JOURNAL ARTICLE
Guorong Wang, Bingbing Yang, Xiaoxia Qu, Jian Guo, Yongheng Luo, Xiaoquan Xu, Feiyun Wu, Xiaoxue Fan, Yang Hou, Song Tian, Sicong Huang, Junfang Xian
PURPOSE: To evaluate nnU-net's performance in automatically segmenting and volumetrically measuring ocular adnexal lymphoma (OAL) on multi-sequence MRI. METHODS: We collected T1-weighted (T1), T2-weighted and T1-weighted contrast-enhanced images with/without fat saturation (T2_FS/T2_nFS, T1c_FS/T1c_nFS) of OAL from four institutions. Two radiologists manually annotated lesions as the ground truth using ITK-SNAP. A deep learning framework, nnU-net, was developed and trained using two models...
July 17, 2024: Neuroradiology
#33
JOURNAL ARTICLE
Yongsik Sim, Kaeum Choi, Kyunghwa Han, Seo Hee Choi, Narae Lee, Yae Won Park, Na-Young Shin, Sung Soo Ahn, Jong Hee Chang, Se Hoon Kim, Seung-Koo Lee
PURPOSE: To investigate prognostic markers for H3 K27-altered diffuse midline gliomas (DMGs) in adults with clinical, qualitative and quantitative imaging phenotypes, including tumor oxygenation characteristics. METHODS: Retrospective chart and imaging reviews were conducted on 32 adults with H3 K27-altered DMGs between 2017 and 2023. Clinical and qualitative imaging characteristics were analyzed. Quantitative imaging assessment was performed from the tumor mask via automatic segmentation to calculate normalized cerebral blood volume (nCBV), capillary transit time heterogeneity (CTH), oxygen extraction fraction (OEF), relative cerebral metabolic rate of oxygen (rCMRO2 ), and mean ADC values...
July 16, 2024: Neuroradiology
#34
JOURNAL ARTICLE
Neha Choudhary, Vivek Gupta, Pratibha Singhi, Anandh Balasubramaniam, Priyanka Madaan, Pradeep Sharma
Bifurcations are a common site for saccular aneurysms, but rarely can be a site for dissecting aneurysms. Identification of these aneurysms is extremely important because the management plan depends on it. We describe a rare case of a ruptured dissecting aneurysm at the right ICA bifurcation in a pre-teen child which posed a diagnostic dilemma but ultimately was successfully managed with flow diversion.
July 16, 2024: Neuroradiology
#35
REVIEW
Karl Jacobs, Daniel Docter, Lotte de Smit, Hans A M Korfage, Sophie C Visser, Frank Lobbezoo, Ruslan Hlushchuk, Bernadette S de Bakker
BACKGROUND: Visualizing (micro)vascular structures remains challenging for researchers and clinicians due to limitations in traditional radiological imaging methods. Exploring the role of vascular development in craniofacial malformations in experimental settings can enhance understanding of these processes, with the effectiveness of high-resolution imaging techniques being crucial for successful research in this field. Micro-CT imaging offers 3D microstructural insights, but requires contrast-enhancing staining agents (CESAs) for visualizing (micro)-vascular tissues, known as contrast-enhanced micro-CT (CECT)...
July 12, 2024: Neuroradiology
#36
JOURNAL ARTICLE
Jun Kanzawa, Koichiro Yasaka, Nana Fujita, Shin Fujiwara, Osamu Abe
PURPOSE: This study aimed to investigate the efficacy of fine-tuned large language models (LLM) in classifying brain MRI reports into pretreatment, posttreatment, and nontumor cases. METHODS: This retrospective study included 759, 284, and 164 brain MRI reports for training, validation, and test dataset. Radiologists stratified the reports into three groups: nontumor (group 1), posttreatment tumor (group 2), and pretreatment tumor (group 3) cases. A pretrained Bidirectional Encoder Representations from Transformers Japanese model was fine-tuned using the training dataset and evaluated on the validation dataset...
July 12, 2024: Neuroradiology
#37
JOURNAL ARTICLE
Horst Urbach, A El Rahal, K Wolf, C Zander, T Demerath, F Volz, J Beck, N Lützen
BACKGROUND & PURPOSE: Around 5% of dementia patients have a treatable cause. To estimate the prevalence of two rare diseases, in which the treatable cause is at the spinal level. METHODS: A radiology information system was searched using the terms CT myelography and the operation and classification system (OPS) code 3-241. The clinical charts of these patients were reviewed to identify patients with a significant cognitive decline. RESULTS: Among 205 patients with spontaneous intracranial hypotension (SIH) and proven CSF leaks we identified five patients with a so-called frontotemporal brain sagging syndrome: Four of those had CSF venous fistulas and significantly improved by occluding them either by surgery or transvenous embolization...
July 10, 2024: Neuroradiology
#38
JOURNAL ARTICLE
Yuzhu Ma, Yao Dai, Ying Zhao, Ziyang Song, Chunhong Hu, Yu Zhang
PURPOSE: To develop thrombus radiomics models based on dual-energy CT (DECT) for predicting etiologic cause of stroke. METHODS: We retrospectively enrolled patients with occlusion of the middle cerebral artery who underwent computed tomography (NCCT) and DECT angiography (DECTA). 70 keV virtual monoenergetic images (simulate conventional 120kVp CTA images) and iodine overlay maps (IOM) were reconstructed for analysis. Five logistic regression radiomics models for predicting cardioembolism (CE) were built based on the features extracted from NCCT, CTA and IOM images...
July 10, 2024: Neuroradiology
#39
JOURNAL ARTICLE
Natalie van Landeghem, Christoph Ziegenfuß, Aydin Demircioglu, Philipp Dammann, Ramazan Jabbarli, Johannes Haubold, Michael Forsting, Isabel Wanke, Martin Köhrmann, Benedikt Frank, Cornelius Deuschl, Yan Li
PURPOSE: We aimed to investigate the impact of post-thrombectomy isolated subarachnoid hemorrhage (i-SAH) and other types of intracranial hemorrhage (o-ICH) on patient's neurological outcomes. METHODS: Stroke data from 2018 to 2022 in a tertiary care center were retrospectively analyzed. Patients with large vessel occlusion from ICA to M2 branch were included. Post-thrombectomy intracranial hemorrhages at 24 h were categorized with Heidelberg Bleeding Classification...
July 9, 2024: Neuroradiology
#40
JOURNAL ARTICLE
Ye Tu, Renjie Song, Fei Xiong, Xiaoyun Fu
PURPOSE: Delirium is linked to brain abnormalities, yet the role of the glymphatic system is not well understood. This study aims to examine alterations in brain physiology in delirium by using diffusion-tensor imaging (DTI) to assess water diffusion along the perivascular space (ALPS) and to explore its correlation with clinical symptoms. METHODS: We examined 15 patients with delirium and 15 healthy controls, measuring water diffusion metrics along the x-, y-, and z-axes in both projection and association fibers to determine the DTI-ALPS index...
July 9, 2024: Neuroradiology
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