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  1. Article ; Online: Response to the comment by C. Kisielowski, H.A. Calderon, F.R. Chen, S. Helveg, J.R. Jinschek, P. Specht, D. Van Dyck on the article "On the influence of the electron dose-rate on the HRTEM image contrast" by J. Barthel, M. Lentzen, A. Thust, Ultramicroscopy 176 (2017) 37-45.

    Barthel, Juri / Lentzen, Markus / Thust, Andreas

    Ultramicroscopy

    2017  Volume 179, Page(s) 113–115

    Abstract: In a recent article [1] we examined the influence of the applied electron dose rate on the magnitude of the image contrast in high-resolution transmission electron microscopy (HRTEM). We concluded that the magnitude of the image contrast is not ... ...

    Abstract In a recent article [1] we examined the influence of the applied electron dose rate on the magnitude of the image contrast in high-resolution transmission electron microscopy (HRTEM). We concluded that the magnitude of the image contrast is not substantially affected by the applied electron dose rate. This result is in obvious contradiction to numerous earlier publications by Kisielowski and coworkers [2-7], who commented our recent article due to this contradiction. The present short communication is a response to the comment of Kisielowski and coworkers on our recent article, where we provide additional arguments supporting our initial findings and conclusions on the magnitude of the image contrast in HRTEM.
    Language English
    Publishing date 2017-08
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1479043-9
    ISSN 1879-2723 ; 0304-3991
    ISSN (online) 1879-2723
    ISSN 0304-3991
    DOI 10.1016/j.ultramic.2017.04.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Conventional MRI features of adult diffuse glioma molecular subtypes: a systematic review.

    Lasocki, Arian / Anjari, Mustafa / Ӧrs Kokurcan, Suna / Thust, Stefanie C

    Neuroradiology

    2020  Volume 63, Issue 3, Page(s) 353–362

    Abstract: Purpose: Molecular parameters have become integral to glioma diagnosis. Much of radiogenomics research has focused on the use of advanced MRI techniques, but conventional MRI sequences remain the mainstay of clinical assessments. The aim of this ... ...

    Abstract Purpose: Molecular parameters have become integral to glioma diagnosis. Much of radiogenomics research has focused on the use of advanced MRI techniques, but conventional MRI sequences remain the mainstay of clinical assessments. The aim of this research was to synthesize the current published data on the accuracy of standard clinical MRI for diffuse glioma genotyping, specifically targeting IDH and 1p19q status.
    Methods: A systematic search was performed in September 2019 using PubMed and the Cochrane Library, identifying studies on the diagnostic value of T1 pre-/post-contrast, T2, FLAIR, T2*/SWI and/or 3-directional diffusion-weighted imaging sequences for the prediction of IDH and/or 1p19q status in WHO grade II-IV diffuse astrocytic and oligodendroglial tumours as defined in the WHO 2016 Classification of CNS Tumours.
    Results: Forty-four studies including a total of 5286 patients fulfilled the inclusion criteria. Correlations between key glioma molecular markers, namely IDH and 1p19q, and distinctive MRI findings have been established, including tumour location, signal composition (including the T2-FLAIR mismatch sign) and apparent diffusion coefficient values.
    Conclusion: Consistent trends have emerged indicating that conventional MRI is valuable for glioma genotyping, particularly in presumed lower grade glioma. However, due to limited interobserver testing, the reproducibility of qualitatively assessed visual features remains an area of uncertainty.
    MeSH term(s) Adult ; Brain Neoplasms/diagnostic imaging ; Brain Neoplasms/genetics ; Glioma/diagnostic imaging ; Glioma/genetics ; Humans ; Isocitrate Dehydrogenase/genetics ; Magnetic Resonance Imaging ; Neoplasm Grading ; Reproducibility of Results
    Chemical Substances Isocitrate Dehydrogenase (EC 1.1.1.41)
    Language English
    Publishing date 2020-08-25
    Publishing country Germany
    Document type Journal Article ; Systematic Review
    ZDB-ID 123305-1
    ISSN 1432-1920 ; 0028-3940
    ISSN (online) 1432-1920
    ISSN 0028-3940
    DOI 10.1007/s00234-020-02532-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: 2021 WHO classification of tumours of the central nervous system: a review for the neuroradiologist.

    McNamara, Cillian / Mankad, Kshitij / Thust, Stefanie / Dixon, Luke / Limback-Stanic, Clara / D'Arco, Felice / Jacques, Thomas S / Löbel, Ulrike

    Neuroradiology

    2022  Volume 64, Issue 10, Page(s) 1919–1950

    Abstract: The fifth edition of the World Health Organization Classification of Tumours of the Central Nervous System (WHO CNS5) published in 2021 builds on the 2016 edition and incorporates output from the Consortium to Inform Molecular and Practical Approaches to ...

    Abstract The fifth edition of the World Health Organization Classification of Tumours of the Central Nervous System (WHO CNS5) published in 2021 builds on the 2016 edition and incorporates output from the Consortium to Inform Molecular and Practical Approaches to CNS Tumour Taxonomy (cIMPACT-NOW). WHO CNS5 introduces fundamental changes to brain tumour classification through the introduction of new tumour families and types, especially in the paediatric population, and a revision of diagnostic criteria for some of the existing neoplasms. Neuroradiologists are central to brain tumour diagnostics, and it is therefore essential that they become familiar with the key updates. This review aims to summarise the most relevant updates for the neuroradiologist and, where available, discuss the known radiophenotypes of various new tumour types to allow for increased accuracy of language and diagnosis. Of particular importance, WHO CNS5 places greater emphasis on organising tumours by molecular type to reflect biology, as well as to allow for better planning of treatment. The principal updates in adult tumours concern the molecular definition of glioblastoma, restructuring of diffuse gliomas, and the introduction of several new tumour types. The updates to the paediatric classification are protean, ranging from the introduction of new types to establishing separate tumour families for paediatric-type gliomas. This review summarises the most significant revisions and captures the rationale and radiological implications for the major updates.
    MeSH term(s) Brain/pathology ; Brain Neoplasms/diagnostic imaging ; Central Nervous System Neoplasms/diagnostic imaging ; Child ; Glioma/pathology ; Humans ; World Health Organization
    Language English
    Publishing date 2022-07-22
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 123305-1
    ISSN 1432-1920 ; 0028-3940
    ISSN (online) 1432-1920
    ISSN 0028-3940
    DOI 10.1007/s00234-022-03008-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Regional and Volumetric Parameters for Diffusion-Weighted WHO Grade II and III Glioma Genotyping: A Method Comparison.

    Thust, S C / Maynard, J A / Benenati, M / Wastling, S J / Mancini, L / Jaunmuktane, Z / Brandner, S / Jäger, H R

    AJNR. American journal of neuroradiology

    2021  Volume 42, Issue 3, Page(s) 441–447

    Abstract: Background and purpose: Studies consistently report lower ADC values in : Materials and methods: Treatment-naïve World Health Organization grade II and III gliomas were analyzed by 3 neuroradiologist readers blinded to tissue results. ADC minimum and ...

    Abstract Background and purpose: Studies consistently report lower ADC values in
    Materials and methods: Treatment-naïve World Health Organization grade II and III gliomas were analyzed by 3 neuroradiologist readers blinded to tissue results. ADC minimum and mean ROIs were defined in tumor and in normal-appearing white matter to calculate normalized values. T2-weighted tumor VOIs were registered to ADC maps with histogram parameters (mean, 2nd and 5th percentiles) extracted. Nonparametric testing (eta
    Results: The study included 283 patients with 79
    Conclusions: Regional normalized mean ADC measurements are noninferior to volumetric segmentation for defining solid glioma
    MeSH term(s) Adult ; Aged ; Brain Neoplasms/diagnostic imaging ; Brain Neoplasms/genetics ; Brain Neoplasms/pathology ; Diffusion Magnetic Resonance Imaging/methods ; Female ; Genotype ; Genotyping Techniques ; Glioma/diagnostic imaging ; Glioma/genetics ; Glioma/pathology ; Humans ; Isocitrate Dehydrogenase/genetics ; Male ; Middle Aged ; Mutation ; Retrospective Studies ; World Health Organization
    Chemical Substances Isocitrate Dehydrogenase (EC 1.1.1.41)
    Language English
    Publishing date 2021-01-07
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 603808-6
    ISSN 1936-959X ; 0195-6108
    ISSN (online) 1936-959X
    ISSN 0195-6108
    DOI 10.3174/ajnr.A6965
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Altered pituitary morphology as a sign of benign hereditary chorea caused by TITF1/NKX2.1 mutations.

    Thust, Steffi / Veneziano, Liana / Parkinson, Michael H / Bhatia, Kailash P / Mantuano, Elide / Gonzalez-Robles, Cristina / Davagnanam, Indran / Giunti, Paola

    Neurogenetics

    2022  Volume 23, Issue 2, Page(s) 91–102

    Abstract: Benign hereditary chorea (BHC) is a rare genetically heterogeneous movement disorder, in which conventional neuroimaging has been reported as normal in most cases. Cystic pituitary abnormalities and features of empty sella have been described in only 7 ... ...

    Abstract Benign hereditary chorea (BHC) is a rare genetically heterogeneous movement disorder, in which conventional neuroimaging has been reported as normal in most cases. Cystic pituitary abnormalities and features of empty sella have been described in only 7 patients with BHC to date. We present 4 patients from 2 families with a BHC phenotype, 3 of whom underwent targeted pituitary MR imaging and genetic testing. All four patients in the two families displayed a classic BHC phenotype. The targeted pituitary MR imaging demonstrated abnormal pituitary sella morphology. Genetic testing was performed in three patients, and showed mutations causing BHC in three of the patients, as well as identifying a novel nonsense mutation of the TITF1/NKX2-1 gene in one of the patients. The presence of the abnormal pituitary sella in two affected members of the same family supports the hypothesis that this sign is a distinct feature of the BHC phenotype spectrum due to mutations in the TITF1 gene. Interestingly, these abnormalities seem to develop in adult life and are progressive. They occur in at least 26% of patients affected with Brain-lung-thyroid syndrome. As a part of the management of these patients we recommend to perform follow-up MRI brain with dedicated pituitary imaging also in adult life as the abnormality can occur years after the onset of chorea.
    MeSH term(s) Chorea/genetics ; Congenital Hypothyroidism/genetics ; Humans ; Mutation ; Nuclear Proteins/genetics ; Thyroid Nuclear Factor 1 ; Transcription Factors/genetics
    Chemical Substances NKX2-1 protein, human ; Nuclear Proteins ; Thyroid Nuclear Factor 1 ; Transcription Factors
    Language English
    Publishing date 2022-01-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1339887-8
    ISSN 1364-6753 ; 1364-6745
    ISSN (online) 1364-6753
    ISSN 1364-6745
    DOI 10.1007/s10048-021-00680-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Early MRI Predictors of Relapse in Primary Central Nervous System Lymphoma Treated with MATRix Immunochemotherapy.

    Cornell, Isabel / Al Busaidi, Ayisha / Wastling, Stephen / Anjari, Mustafa / Cwynarski, Kate / Fox, Christopher P / Martinez-Calle, Nicolas / Poynton, Edward / Maynard, John / Thust, Steffi C

    Journal of personalized medicine

    2023  Volume 13, Issue 7

    Abstract: Primary Central Nervous System Lymphoma (PCNSL) is a highly malignant brain tumour. We investigated dynamic changes in tumour volume and apparent diffusion coefficient (ADC) measurements for predicting outcome following treatment with MATRix chemotherapy ...

    Abstract Primary Central Nervous System Lymphoma (PCNSL) is a highly malignant brain tumour. We investigated dynamic changes in tumour volume and apparent diffusion coefficient (ADC) measurements for predicting outcome following treatment with MATRix chemotherapy in PCNSL. Patients treated with MATRix (
    Language English
    Publishing date 2023-07-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662248-8
    ISSN 2075-4426
    ISSN 2075-4426
    DOI 10.3390/jpm13071182
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  7. Article: The Perceived Impact of COVID-19 on Student Well-Being and the Mediating Role of the University Support: Evidence From France, Germany, Russia, and the UK.

    Plakhotnik, Maria S / Volkova, Natalia V / Jiang, Cuiling / Yahiaoui, Dorra / Pheiffer, Gary / McKay, Kerry / Newman, Sonja / Reißig-Thust, Solveig

    Frontiers in psychology

    2021  Volume 12, Page(s) 642689

    Abstract: The rapid and unplanned change to teaching and learning in the online format brought by COVID-19 has likely impacted many, if not all, aspects of university students' lives worldwide. To contribute to the investigation of this change, this study focuses ... ...

    Abstract The rapid and unplanned change to teaching and learning in the online format brought by COVID-19 has likely impacted many, if not all, aspects of university students' lives worldwide. To contribute to the investigation of this change, this study focuses on the impact of the pandemic on student well-being, which has been found to be as important to student lifelong success as their academic achievement. Student well-being has been linked to their engagement and performance in curricular, co-curricular, and extracurricular activities, intrinsic motivation, satisfaction, meaning making, and mental health. The purpose of this study was to examine how student perceptions of their degree completion and future job prospects during the pandemic impact their well-being and what role university support plays in this relationship. We used the conservation of resources theory to frame our study and to develop five hypotheses that were later tested via structural equation modeling. Data were collected from 2,707 university students in France, Germany, Russia, and UK via an online survey. The results showed that university support provided by instructors and administration plays a mediating role in the relationship between the perceived impact of COVID-19 on degree completion and future job prospects and levels of student well-being. Student well-being is decreased by their concerns for their degree completion but not by their concerns for future job prospects. In turn, concerns for future job prospects affect student well-being over time. These results suggest that in a "new normal," universities could increase student well-being by making support to student studies a priority, especially for undergraduates. Also, universities should be aware of the students' changing emotional responses to crisis and ensure visibility and accessibility of student support.
    Language English
    Publishing date 2021-07-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2021.642689
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  8. Article ; Online: From research to clinical practice: a European neuroradiological survey on quantitative advanced MRI implementation.

    Manfrini, Elia / Smits, Marion / Thust, Steffi / Geiger, Sergej / Bendella, Zeynep / Petr, Jan / Solymosi, Laszlo / Keil, Vera C

    European radiology

    2021  Volume 31, Issue 8, Page(s) 6334–6341

    Abstract: Objective: Quantitative MRI (qMRI) methods provide versatile neuroradiological applications and are a hot topic in research. The degree of their clinical implementation is however barely known. This survey was created to illuminate which and how qMRI ... ...

    Abstract Objective: Quantitative MRI (qMRI) methods provide versatile neuroradiological applications and are a hot topic in research. The degree of their clinical implementation is however barely known. This survey was created to illuminate which and how qMRI techniques are currently applied across Europe.
    Methods: In total, 4753 neuroradiologists from 27 countries received an online questionnaire. Demographic and professional data, experience with qMRI techniques in the brain and head and neck, usage, reasons for/against application, and knowledge of the QIBA and EIBALL initiatives were assessed.
    Results: Two hundred seventy-two responders in 23 countries used the following techniques clinically (mean values in %): DWI (82.0%, n = 223), DSC (67.3%, n = 183), MRS (64.3%, n = 175), DCE (43.4%, n = 118), BOLD-fMRI (42.6%, n = 116), ASL (37.5%, n = 102), fat quantification (25.0%, n = 68), T2 mapping (16.9%, n = 46), T1 mapping (15.1%, n = 41), PET-MRI (11.8%, n = 32), IVIM (5.5%, n = 15), APT-CEST (4.8%, n = 13), and DKI (3.3%, n = 9). The most frequent usage indications for any qMRI technique were tissue differentiation (82.4%, n = 224) and oncological monitoring (72.8%, n = 198). Usage differed between countries, e.g. ASL: Germany (n = 13/63; 20.6%) vs. France (n = 31/40; 77.5%). Neuroradiologists endorsed the use of qMRI because of an improved diagnostic accuracy (89.3%, n = 243), but 50.0% (n = 136) are in need of better technology, 34.9% (n = 95) wish for more communication, and 31.3% need help with result interpretation/generation (n = 85). QIBA and EIBALL were not well known (12.5%, n = 34, and 11.0%, n = 30).
    Conclusions: The clinical implementation of qMRI methods is highly variable. Beyond the aspect of readiness for clinical use, better availability of support and a wider dissemination of guidelines could catalyse a broader implementation.
    Key points: • Neuroradiologists endorse the use of qMRI techniques as they subjectively improve diagnostic accuracy. • Clinical implementation is highly variable between countries, techniques, and indications. • The use of advanced imaging could be promoted through an increase in technical support and training of both doctors and technicians.
    MeSH term(s) Europe ; France ; Germany ; Humans ; Magnetic Resonance Imaging ; Reproducibility of Results ; Surveys and Questionnaires
    Language English
    Publishing date 2021-01-22
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1085366-2
    ISSN 1432-1084 ; 0938-7994 ; 1613-3749
    ISSN (online) 1432-1084
    ISSN 0938-7994 ; 1613-3749
    DOI 10.1007/s00330-020-07582-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Neuroimaging findings in sickle cell disease.

    Thust, S C / Burke, C / Siddiqui, A

    The British journal of radiology

    2014  Volume 87, Issue 1040, Page(s) 20130699

    Abstract: At least 25% of individuals with sickle cell disease will have a neurological complication over their lifetime, often as early as in childhood. Neuroradiological findings in patients with sickle cell disease are common and include acute territorial ... ...

    Abstract At least 25% of individuals with sickle cell disease will have a neurological complication over their lifetime, often as early as in childhood. Neuroradiological findings in patients with sickle cell disease are common and include acute territorial infarction, silent ischaemia and intracranial haemorrhage. Imaging abnormalities are typically, but not always, manifestations of the underlying vasculopathy. Coexisting acute and chronic pathology may pose challenges to interpretation.
    MeSH term(s) Anemia, Sickle Cell/complications ; Brain Diseases/diagnosis ; Brain Diseases/etiology ; Central Nervous System Diseases/diagnosis ; Central Nervous System Diseases/etiology ; Humans ; Neuroimaging/methods
    Language English
    Publishing date 2014-05-21
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2982-8
    ISSN 1748-880X ; 0007-1285
    ISSN (online) 1748-880X
    ISSN 0007-1285
    DOI 10.1259/bjr.20130699
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  10. Article ; Online: Pseudoprogression of brain tumors.

    Thust, Stefanie C / van den Bent, Martin J / Smits, Marion

    Journal of magnetic resonance imaging : JMRI

    2018  

    Abstract: ... Radiologically, pseudoprogression is defined as a new or enlarging area(s) of contrast agent enhancement ...

    Abstract This review describes the definition, incidence, clinical implications, and magnetic resonance imaging (MRI) findings of pseudoprogression of brain tumors, in particular, but not limited to, high-grade glioma. Pseudoprogression is an important clinical problem after brain tumor treatment, interfering not only with day-to-day patient care but also the execution and interpretation of clinical trials. Radiologically, pseudoprogression is defined as a new or enlarging area(s) of contrast agent enhancement, in the absence of true tumor growth, which subsides or stabilizes without a change in therapy. The clinical definitions of pseudoprogression have been quite variable, which may explain some of the differences in reported incidences, which range from 9-30%. Conventional structural MRI is insufficient for distinguishing pseudoprogression from true progressive disease, and advanced imaging is needed to obtain higher levels of diagnostic certainty. Perfusion MRI is the most widely used imaging technique to diagnose pseudoprogression and has high reported diagnostic accuracy. Diagnostic performance of MR spectroscopy (MRS) appears to be somewhat higher, but MRS is less suitable for the routine and universal application in brain tumor follow-up. The combination of MRS and diffusion-weighted imaging and/or perfusion MRI seems to be particularly powerful, with diagnostic accuracy reaching up to or even greater than 90%. While diagnostic performance can be high with appropriate implementation and interpretation, even a combination of techniques, however, does not provide 100% accuracy. It should also be noted that most studies to date are small, heterogeneous, and retrospective in nature. Future improvements in diagnostic accuracy can be expected with harmonization of acquisition and postprocessing, quantitative MRI and computer-aided diagnostic technology, and meticulous evaluation with clinical and pathological data.
    Level of evidence: 3 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2018.
    Language English
    Publishing date 2018-05-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1146614-5
    ISSN 1522-2586 ; 1053-1807
    ISSN (online) 1522-2586
    ISSN 1053-1807
    DOI 10.1002/jmri.26171
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