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Lars Bielak
Lars Bielak
Physicist, Radiology - Medical Physics, University Medical Center Freiburg
Verified email at uniklinik-freiburg.de
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The utility of multiparametric MRI to characterize hypoxic tumor subvolumes in comparison to FMISO PET/CT. Consequences for diagnosis and chemoradiation treatment planning in …
N Wiedenmann, AL Grosu, M Büchert, HC Rischke, J Ruf, L Bielak, ...
Radiotherapy and Oncology 150, 128-135, 2020
312020
Effect of radiochemotherapy on T2* MRI in HNSCC and its relation to FMISO PET derived hypoxia and FDG PET
N Wiedenmann, H Bunea, HC Rischke, A Bunea, L Majerus, L Bielak, ...
Radiation Oncology 13, 1-9, 2018
282018
Explainable AI for CNN-based prostate tumor segmentation in multi-parametric MRI correlated to whole mount histopathology
DD Gunashekar, L Bielak, L Hägele, B Oerther, M Benndorf, AL Grosu, ...
Radiation Oncology 17 (1), 65, 2022
262022
Convolutional neural networks for head and neck tumor segmentation on 7-channel multiparametric MRI: a leave-one-out analysis
L Bielak, N Wiedenmann, A Berlin, NH Nicolay, DD Gunashekar, ...
Radiation Oncology 15, 1-9, 2020
232020
Automatic tumor segmentation with a convolutional neural network in multiparametric mri: Influence of distortion correction
L Bielak, N Wiedenmann, NH Nicolay, T Lottner, J Fischer, H Bunea, ...
Tomography 5 (3), 292-299, 2019
152019
Radio-frequency induced heating of intra-cranial EEG electrodes: The more the colder?
T Lottner, S Reiss, SB Rieger, M Schuettler, J Fischer, L Bielak, AC Özen, ...
Neuroimage 264, 119691, 2022
42022
Quantifying information content of multiparametric MRI data for automatic tumor segmentation using CNNs
L Bielak, N Wiedenmann, T Lottner, H Bunea, AL Grosu, M Bock
Proceedings of the International Society for Magnetic Resonance in Medicine, 2019
22019
Avoiding Systematic Errors of Fiber-optic Temperature Probes: MR Thermometry for Safety Assessment of Small Planar Metallic Structures
T Lottner, JB Erhardt, A Reichert, AC Özen, L Bielak, M Schuettler, M Bock
Proceedings of the 27th ISMRM Annual Meeting, Montreal, Canada, 2019
22019
Simultaneous T2‐weighted real‐time MRI of two orthogonal slices
S Hickey, A Reichert, W Ptacek, L Bielak, S Reiss, J Fischer, ...
Magnetic Resonance in Medicine 90 (6), 2388-2399, 2023
12023
Improvement of diffusion weighted MRI by practical B0 homogenization for head & neck cancer patients undergoing radiation therapy
L Bielak, NH Nicolay, U Ludwig, T Lottner, A Rühle, AL Grosu, M Bock
Physica Medica 97, 59-65, 2022
12022
RF heating of a 64-channel implantable electrode grid: simulation and temperature measurements
T Lottner, S Reiss, L Haas, J Erhardt, AC Özen, L Bielak, M Schüttler, ...
Proceedings of the ISMRM, 4199, 2020
12020
EP-2030 multiparametric MRI and FMISO PET in HNSCC and its relation with outcome
N Wiedenmann, H Bunea, H Rischke, A Bunea, NH Nicolay, L Majerus, ...
Radiotherapy and Oncology 133, S1114-S1115, 2019
12019
Optimization of diffusion imaging for multiple target regions using maximum likelihood estimation
L Bielak, M Bock
Current Directions in Biomedical Engineering 3 (2), 203-206, 2017
12017
Multiparametric MRI for Determining Tumor infiltrating Lymphocytes and Tissue Hypoxia in Head and Neck Cancer Patients
NH Nicolay, A Ruehle, N Wiedenmann, L Bielak, M Werner, M Bock, ...
STRAHLENTHERAPIE UND ONKOLOGIE 198 (SUPPL 1), S10-S11, 2022
2022
Convolutional neural networks for head and neck tumor segmentation in MRI. Protocol and sequence optimization
L Bielak
2022
PO-1695: The utility of multiparametric MRI to characterize hypoxic tumor subvolumes compared to FMISO PET/CT
N Wiedenmann, NH Nicolay, M Büchert, H Rischke, J Ruf, L Bielak, ...
Radiotherapy and Oncology 152, S933-S934, 2020
2020
Predicting Biochemical Failure in Irradiated Patients With Prostate Cancer by Tumour Volume Measured by Multiparametric MRI
B Oerther, MV Buren, CM Klein, S Kirste, NH Nicolay, T Sprave, S Spohn, ...
in vivo 34 (6), 3473-3481, 2020
2020
Multiparametric MRI to characterize tumor and lymph node hypoxia derived from hypoxia FMISO PET/CT in HNSCC
N Wiedenmann, NH Nicolay, M Buchert, HC Rischke, J Ruf, L Bielak, ...
STRAHLENTHERAPIE UND ONKOLOGIE 196 (SUPPL 1), S74-S75, 2020
2020
Imaging Biomarkers Multiparametric 3 Tesla MRI and FMISO Hypoxia PET during Chemoradiotherapy in HNSCC and Their Relation to Outcome
N Wiedenmann, H Bunea, HC Rischke, NH Nicolay, L Majerus, L Bielak, ...
International Journal of Radiation Oncology, Biology, Physics 105 (1), E368-E369, 2019
2019
Multiparametric 3 Tesla MRI and FMISO hypoxia PET in HNSCC and its relation with outcome
N Wiedenmann, H Bunea, HC Rischke, A Bunea, N Nicolay, L Majerus, ...
STRAHLENTHERAPIE UND ONKOLOGIE 195, S26-S26, 2019
2019
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