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Book ; Online ; Thesis: Einsatz der Magnetresonanztomographie für die Detektion periapikaler Entzündungsprozesse und assoziierter mukosaler Pathologien

Burian, Egon [Verfasser] / Folwaczny, Matthias [Akademischer Betreuer]

2024

Author's details	Egon Burian ; Betreuer: Matthias Folwaczny
Keywords	Medizin, Gesundheit ; Medicine, Health
Subject code	sg610
Language	German
Publisher	Universitätsbibliothek der Ludwig-Maximilians-Universität
Publishing place	München
Document type	Book ; Online ; Thesis
Database	Digital theses on the web

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Article ; Online: Detection of caries lesions using a water-sensitive STIR sequence in dental MRI.

Burian, Egon / Lenhart, Nicolas / Greve, Tobias / Bodden, Jannis / Burian, Gintare / Palla, Benjamin / Probst, Florian / Probst, Monika / Beer, Meinrad / Folwaczny, Matthias / Schwarting, Julian

Scientific reports

2024 Volume 14, Issue 1, Page(s) 663

Abstract: In clinical practice, diagnosis of suspected carious lesions is verified by using conventional dental radiography (DR), including panoramic radiography (OPT), bitewing imaging, and dental X-ray. The aim of this study was to evaluate the use of magnetic ... ...

Abstract	In clinical practice, diagnosis of suspected carious lesions is verified by using conventional dental radiography (DR), including panoramic radiography (OPT), bitewing imaging, and dental X-ray. The aim of this study was to evaluate the use of magnetic resonance imaging (MRI) for caries visualization. Fourteen patients with clinically suspected carious lesions, verified by standardized dental examination including DR and OPT, were imaged with 3D isotropic T2-weighted STIR (short tau inversion recovery) and T1 FFE Black bone sequences. Intensities of dental caries, hard tissue and pulp were measured and calculated as aSNR (apparent signal to noise ratio) and aHTMCNR (apparent hard tissue to muscle contrast to noise ratio) in both sequences. Imaging findings were then correlated to clinical examination results. In STIR as well as in T1 FFE black bone images, aSNR and aHTMCNR was significantly higher in carious lesions than in healthy hard tissue (p < 0.001). Using water-sensitive STIR sequence allowed for detecting significantly lower aSNR and aHTMCNR in carious teeth compared to healthy teeth (p = 0.01). The use of MRI for the detection of caries is a promising imaging technique that may complement clinical exams and traditional imaging.
MeSH term(s)	Humans ; Dental Caries/diagnostic imaging ; Dental Caries Susceptibility ; Magnetic Resonance Imaging ; Chromosome Inversion ; Health Status
Language	English
Publishing date	2024-01-05
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-024-51151-2
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Visualization of clinically silent, odontogenic maxillary sinus mucositis originating from periapical inflammation using MRI: a feasibility study.

Burian, Egon / Feuerriegel, Georg / Sollmann, Nico / Burian, Gintare / Palla, Benjamin / Griesbauer, Magdalena / Bumm, Caspar / Probst, Monika / Beer, Meinrad / Folwaczny, Matthias

Clinical oral investigations

2023 Volume 27, Issue 7, Page(s) 3705–3712

Abstract: Objectives: Maxillary sinus mucositis is frequently associated with odontogenic foci. Periapical inflammation of maxillary molars and premolars cannot be visualized directly using radiation-based imaging. The purpose of this study was to answer the ... ...

Abstract	Objectives: Maxillary sinus mucositis is frequently associated with odontogenic foci. Periapical inflammation of maxillary molars and premolars cannot be visualized directly using radiation-based imaging. The purpose of this study was to answer the following clinical question: among patients with periapical inflammatory processes in the maxilla, does the use of magnetic resonance imaging (MRI), as compared to conventional periapical (AP) and panoramic radiography (OPT), improve diagnostic accuracy? Methods: Forty-two subjects with generalized periodontitis were scanned on a 3 T MRI. Sixteen asymptomatic subjects with mucosal swelling of the maxillary sinus were enrolled in the study. Periapical edema was assessed using short tau inversion recovery (STIR) sequence. Apical osteolysis and mucosal swelling were assessed by MRI, AP, and OPT imaging using the periapical index score (PAI). Comparisons between groups were performed with chi-squared tests with Yates' correction. Significance was set at p < 0.05. Results: Periapical lesions of maxillary premolars and molars were identified in 16 subjects, 21 sinuses, and 58 teeth. Bone edema and PAI scores were significantly higher using MRI as compared to OPT and AP (p < 0.05). Using the STIR sequence, a significant association of PAI score > 1 and the presence of mucosal swelling in the maxillary sinus was detected (p = 0.03). Conclusion: Periapical inflammation and maxillary mucositis could be visualized using STIR imaging. The use of MRI may help detect early, subtle inflammatory changes in the periapical tissues surrounding maxillary dentition. Early detection could guide diagnostic criteria, as well as treatment and prevention.
MeSH term(s)	Humans ; Maxillary Sinus/diagnostic imaging ; Maxillary Sinus/pathology ; Mucositis ; Feasibility Studies ; Inflammation/diagnostic imaging ; Inflammation/pathology ; Periapical Periodontitis/complications ; Magnetic Resonance Imaging ; Cone-Beam Computed Tomography/methods
Language	English
Publishing date	2023-04-11
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1364490-7
ISSN	1436-3771 ; 1432-6981
ISSN (online)	1436-3771
ISSN	1432-6981
DOI	10.1007/s00784-023-04986-4
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Article ; Online: Detection of caries lesions using a water-sensitive STIR sequence in dental MRI

Egon Burian / Nicolas Lenhart / Tobias Greve / Jannis Bodden / Gintare Burian / Benjamin Palla / Florian Probst / Monika Probst / Meinrad Beer / Matthias Folwaczny / Julian Schwarting

Scientific Reports, Vol 14, Iss 1, Pp 1-

2024 Volume 9

Abstract: Abstract In clinical practice, diagnosis of suspected carious lesions is verified by using conventional dental radiography (DR), including panoramic radiography (OPT), bitewing imaging, and dental X-ray. The aim of this study was to evaluate the use of ... ...

Abstract	Abstract In clinical practice, diagnosis of suspected carious lesions is verified by using conventional dental radiography (DR), including panoramic radiography (OPT), bitewing imaging, and dental X-ray. The aim of this study was to evaluate the use of magnetic resonance imaging (MRI) for caries visualization. Fourteen patients with clinically suspected carious lesions, verified by standardized dental examination including DR and OPT, were imaged with 3D isotropic T2-weighted STIR (short tau inversion recovery) and T1 FFE Black bone sequences. Intensities of dental caries, hard tissue and pulp were measured and calculated as aSNR (apparent signal to noise ratio) and aHTMCNR (apparent hard tissue to muscle contrast to noise ratio) in both sequences. Imaging findings were then correlated to clinical examination results. In STIR as well as in T1 FFE black bone images, aSNR and aHTMCNR was significantly higher in carious lesions than in healthy hard tissue (p < 0.001). Using water-sensitive STIR sequence allowed for detecting significantly lower aSNR and aHTMCNR in carious teeth compared to healthy teeth (p = 0.01). The use of MRI for the detection of caries is a promising imaging technique that may complement clinical exams and traditional imaging.
Keywords	Medicine ; R ; Science ; Q
Subject code	610 ; 616
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Artificial intelligence support in MR imaging of incidental renal masses: an early health technology assessment.

Marka, Alexander W / Luitjens, Johanna / Gassert, Florian T / Steinhelfer, Lisa / Burian, Egon / Rübenthaler, Johannes / Schwarze, Vincent / Froelich, Matthias F / Makowski, Marcus R / Gassert, Felix G

European radiology

2024

Abstract: Objective: This study analyzes the potential cost-effectiveness of integrating an artificial intelligence (AI)-assisted system into the differentiation of incidental renal lesions as benign or malignant on MR images during follow-up.: Materials and ... ...

Abstract	Objective: This study analyzes the potential cost-effectiveness of integrating an artificial intelligence (AI)-assisted system into the differentiation of incidental renal lesions as benign or malignant on MR images during follow-up. Materials and methods: For estimation of quality-adjusted life years (QALYs) and lifetime costs, a decision model was created, including the MRI strategy and MRI + AI strategy. Model input parameters were derived from recent literature. Willingness to pay (WTP) was set to $100,000/QALY. Costs of $0 for the AI were assumed in the base-case scenario. Model uncertainty and costs of the AI system were assessed using deterministic and probabilistic sensitivity analysis. Results: Average total costs were at $8054 for the MRI strategy and $7939 for additional use of an AI-based algorithm. The model yielded a cumulative effectiveness of 8.76 QALYs for the MRI strategy and of 8.77 for the MRI + AI strategy. The economically dominant strategy was MRI + AI. Deterministic and probabilistic sensitivity analysis showed high robustness of the model with the incremental cost-effectiveness ratio (ICER), which represents the incremental cost associated with one additional QALY gained, remaining below the WTP for variation of the input parameters. If increasing costs for the algorithm, the ICER of $0/QALY was exceeded at $115, and the defined WTP was exceeded at $667 for the use of the AI. Conclusions: This analysis, rooted in assumptions, suggests that the additional use of an AI-based algorithm may be a potentially cost-effective alternative in the differentiation of incidental renal lesions using MRI and needs to be confirmed in the future. Clinical relevance statement: These results hint at AI's the potential impact on diagnosing renal masses. While the current study urges careful interpretation, ongoing research is essential to confirm and seamlessly integrate AI into clinical practice, ensuring its efficacy in routine diagnostics. Key points: • This is a model-based study using data from literature where AI has been applied in the diagnostic workup of incidental renal lesions. • MRI + AI has the potential to be a cost-effective alternative in the differentiation of incidental renal lesions. • The additional use of AI can reduce costs in the diagnostic workup of incidental renal lesions.
Language	English
Publishing date	2024-02-23
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/s00330-024-10643-5
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Article ; Online: Evaluation of 3D MRI for early detection of bone edema associated with apical periodontitis.

Feuerriegel, Georg C / Burian, Egon / Sollmann, Nico / Leonhardt, Yannik / Burian, Gintare / Griesbauer, Magdalena / Bumm, Caspar / Makowski, Marcus R / Probst, Monika / Probst, Florian A / Karampinos, Dimitrios C / Folwaczny, Matthias

Clinical oral investigations

2023 Volume 27, Issue 9, Page(s) 5403–5412

Abstract: Objectives: To detect and evaluate early signs of apical periodontitis using MRI based on a 3D short-tau-inversion-recovery (STIR) sequence compared to conventional panoramic radiography (OPT) and periapical radiographs in patients with apical ... ...

Abstract	Objectives: To detect and evaluate early signs of apical periodontitis using MRI based on a 3D short-tau-inversion-recovery (STIR) sequence compared to conventional panoramic radiography (OPT) and periapical radiographs in patients with apical periodontitis. Materials and methods: Patients with clinical evidence of periodontal disease were enrolled prospectively and received OPT as well as MRI of the viscerocranium including a 3D-STIR sequence. The MRI sequences were assessed for the occurrence and extent of bone changes associated with apical periodontitis including bone edema, periradicular cysts, and dental granulomas. OPTs and intraoral periapical radiographs, if available, were assessed for corresponding periapical radiolucencies using the periapical index (PAI). Results: In total, 232 teeth of 37 patients (mean age 62±13.9 years, 18 women) were assessed. In 69 cases reactive bone edema was detected on MRI with corresponding radiolucency according to OPT. In 105 cases edema was detected without corresponding radiolucency on OPT. The overall extent of edema measured on MRI was significantly larger compared to the radiolucency on OPT (mean: STIR 2.4±1.4 mm, dental radiograph 1.3±1.2 mm, OPT 0.8±1.1 mm, P=0.01). The overall PAI score was significantly higher on MRI compared to OPT (mean PAI: STIR 1.9±0.7, dental radiograph 1.3±0.5, OPT 1.2±0.7, P=0.02). Conclusion: Early detection and assessment of bone changes of apical periodontitis using MRI was feasible while the extent of bone edema measured on MRI exceeded the radiolucencies measured on OPT. Clinical relevance: In clinical routine, dental MRI might be useful for early detection and assessment of apical periodontitis before irreversible bone loss is detected on conventional panoramic and intraoral periapical radiographs.
MeSH term(s)	Humans ; Female ; Middle Aged ; Aged ; Root Canal Therapy ; Periapical Periodontitis/complications ; Radiography ; Magnetic Resonance Imaging ; Tooth, Nonvital/diagnostic imaging
Language	English
Publishing date	2023-07-18
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1364490-7
ISSN	1436-3771 ; 1432-6981
ISSN (online)	1436-3771
ISSN	1432-6981
DOI	10.1007/s00784-023-05159-z
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Book ; Online ; Thesis: Annexin-basierte optische Fluoreszenzbildgebung und Perfusions-MRT zum Monitoring der frühen Effekte einer Regorafenibtherapie im experimentellen humanen Kolonkarzinom

Burian, Egon [Verfasser] / Cyran, Clemens [Akademischer Betreuer]

2020

Author's details	Egon Burian ; Betreuer: Clemens Cyran
Keywords	Medizin, Gesundheit ; Medicine, Health
Subject code	sg610
Language	German
Publisher	Universitätsbibliothek der Ludwig-Maximilians-Universität
Publishing place	München
Document type	Book ; Online ; Thesis
Database	Digital theses on the web

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Article ; Online: Pulmonary Findings in Hospitalized COVID-19 Patients Assessed by Lung Ultrasonography (LUS) - A Prospective Registry Study.

Barner, Anna / Burian, Egon / Simon, Alexander / Castillo, Katty / Waschulzik, Birgit / Braren, Rickmer / Heemann, Uwe / Osterwalder, Joseph / Spiel, Alexander / Heim, Markus / Stock, Konrad Friedrich

Ultraschall in der Medizin (Stuttgart, Germany : 1980)

2023 Volume 44, Issue 5, Page(s) e248–e256

Abstract: Purpose: This prospective two-centre study investigated localisation-dependent lesion patterns in COVID-19 with standard lung ultrasonography (LUS) and their relationship with thoracic computed tomography (CT) and clinical parameters.: Materials and ... ...

Title translation	Lungenbefunde bei hospitalisierten COVID-19-Patienten erfasst mittels Lungensonografie (LUS) – Eine prospektive Registerstudie.
Abstract	Purpose: This prospective two-centre study investigated localisation-dependent lesion patterns in COVID-19 with standard lung ultrasonography (LUS) and their relationship with thoracic computed tomography (CT) and clinical parameters. Materials and methods: Between April 2020 and April 2021, 52 SARS-CoV-2-positive patients in two hospitals were examined by means of LUS for "B-lines", fragmented pleura, consolidation and air bronchogram in 12 lung regions and for pleural effusions. A newly developed LUS score based on the number of features present was correlated with clinical parameters (respiration, laboratory parameters) and the CT and analysed with respect to the 30- and 60-day outcome. All patients were offered an outpatient LUS follow-up. Results: The LUS and CT showed a bilateral, partially posteriorly accentuated lesion distribution pattern. 294/323 (91%) of CT-detected lesions were pleural. The LUS score showed an association with respiratory status and C-reactive protein; the correlation with the CT score was weak (Spearman's rho = 0.339, p < 0.001). High LUS scores on admission were also observed in patients who were discharged within 30 days. LUS during follow-up showed predominantly declining LUS scores. Conclusion: The LUS score reflected the clinical condition of the patients. No conclusion could be made on the prognostic value of the LUS, because of the low event rate. The LUS and CT score showed no sufficient correlation. This is probably due to different physical principles, which is why LUS could be of complementary value.
Language	English
Publishing date	2023-01-16
Publishing country	Germany
Document type	Journal Article
ZDB-ID	801064-x
ISSN	1438-8782 ; 1439-0914 ; 1431-4894 ; 0172-4614
ISSN (online)	1438-8782
ISSN	1439-0914 ; 1431-4894 ; 0172-4614
DOI	10.1055/a-2013-8045
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Article ; Online: MRI-detected intraosseous bone marrow edema recedes after effective therapy of periodontitis.

Schwarting, Julian / Probst, Florian Andreas / Griesbauer, Magdalena / Robl, Teresa / Burian, Egon / Wiestler, Benedikt / Brunner, Teresa / Malenova, Yoana / Bumm, Caspar / Folwaczny, Matthias / Probst, Monika

European radiology

2023

Abstract: Objectives: T2 STIR MRI sequences can detect preclinical changes associated with periodontal inflammation, i.e. intraosseous edema in the tooth-supporting bone. In this study, we assessed whether MRI can be used for monitoring periodontal disease.: ... ...

Abstract	Objectives: T2 STIR MRI sequences can detect preclinical changes associated with periodontal inflammation, i.e. intraosseous edema in the tooth-supporting bone. In this study, we assessed whether MRI can be used for monitoring periodontal disease. Material and methods: In a prospective cohort study, we examined 35 patients with periodontitis between 10/2018 and 04/2019 by using 3D isotropic T2-weighted short tau inversion recovery (STIR) and Fast Field Echo T1-weighted Black bone sequences. All patients received standardized clinical exams before and three months after non-surgical periodontal therapy. Bone marrow edema extent was quantified in the STIR sequence at 922 sites before and after treatment. Results were compared with standard clinical findings. Non-parametric statistical analysis was performed. Results: Non-surgical periodontal treatment caused significant improvement in mean probing depth (p < 0.001) and frequency of bleeding on probing (p < 0.001). The mean depth of osseous edema per site was reduced from a median [IQR] of 2 [1, 3] mm at baseline to 1 [0, 3] mm, (p < 0.001). Periodontal treatment reduced the frequency of sites with edema from 35 to 24% (p < 0.01). Conclusion: The decrease of periodontal bone marrow edema, as observed with T2 STIR MR imaging, is indicative of successful periodontal healing. Clinical relevance statement: T2 STIR hyperintense bone marrow edema in the periodontal bone decreases after treatment and can therefore be used to evaluate treatment success. Furthermore, MRI reveals new options to depict hidden aspects of periodontitis. Key points: • T2 STIR hyperintense periodontal intraosseous edema was prospectively investigated in 35 patients with periodontitis before and after treatment and compared to clinical outcomes. • The frequency of affected sites was reduced from 35 to 24% (p < 0.001), and mean edema depth was reduced from a median [IQR] of 2 [1, 3] mm at baseline to 1 [0, 3] mm 3 months after treatment. (p < 0.001). • T2 STIR sequences can be used to monitor the posttreatment course of periodontitis.
Language	English
Publishing date	2023-10-19
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/s00330-023-10327-6
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Article: Long-term reproducibility of opportunistically assessed vertebral bone mineral density and texture features in routine clinical multi-detector computed tomography using an automated segmentation framework.

Bodden, Jannis / Dieckmeyer, Michael / Sollmann, Nico / Rühling, Sebastian / Prucker, Philipp / Löffler, Maximilian T / Burian, Egon / Subburaj, Karupppasamy / Zimmer, Claus / Kirschke, Jan S / Baum, Thomas

Quantitative imaging in medicine and surgery

2023 Volume 13, Issue 9, Page(s) 5472–5482

Abstract: Background: To investigate reproducibility of texture features and volumetric bone mineral density (vBMD) extracted from trabecular bone in the thoracolumbar spine in routine clinical multi-detector computed tomography (MDCT) data in a single scanner ... ...

Abstract	Background: To investigate reproducibility of texture features and volumetric bone mineral density (vBMD) extracted from trabecular bone in the thoracolumbar spine in routine clinical multi-detector computed tomography (MDCT) data in a single scanner environment. Methods: Patients who underwent two routine clinical thoraco-abdominal MDCT exams at a single scanner with a time interval of 6 to 26 months (n=203, 131 males; time interval mean, 13 months; median, 12 months) were included in this observational study. Exclusion criteria were metabolic and hematological disorders, bone metastases, use of bone-active medications, and history of osteoporotic vertebral fractures (VFs) or prior diagnosis of osteoporosis. A convolutional neural network (CNN)-based framework was used for automated spine labeling and segmentation (T5-L5), asynchronous Hounsfield unit (HU)-to-BMD calibration, and correction for the intravenous contrast medium phase. Vertebral vBMD and six texture features [variance Results: SRE, LRE, RLN, and RP exhibited substantial reproducibility with RMSCV-values below 2%, for both sexes and at all spine levels, while vBMD was less reproducible (RMSCV =11.9-16.2%). Entropy showed highest variability (RMSCV =4.34-7.69%) due to statistically significant increases [range, mean ± standard deviation: (4.40±5.78)% to (8.36±8.66)%, P<0.001]. RMSCV of variance Conclusions: Opportunistic assessment of texture features in a single scanner environment using the presented CNN-based framework yields substantial reproducibility, outperforming vBMD reproducibility. Lowest scan-rescan variability was found for higher-order texture features. Further studies are warranted to determine, whether microarchitectural changes to the trabecular bone may be assessed through texture features.
Language	English
Publishing date	2023-08-09
Publishing country	China
Document type	Journal Article
ZDB-ID	2653586-5
ISSN	2223-4306 ; 2223-4292
ISSN (online)	2223-4306
ISSN	2223-4292
DOI	10.21037/qims-23-19
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