Dr. Cristian Lorenz Profile

Dr. Cristian Lorenz

at Philips Research

SPIE Involvement:

Conference Program Committee | Author

Publications (42)

Proceedings Article | 10 March 2020 Paper

Combining deep learning and model-based segmentation for labeled spine CT segmentation

Christian Buerger, Jens von Berg, Astrid Franz, Tobias Klinder, Cristian Lorenz, Matthias Lenga

Proceedings Volume 11313, 113131C (2020) https://doi.org/10.1117/12.2549485

KEYWORDS: Image segmentation, Spine, 3D modeling, Image resolution, Computed tomography, Metals, Image processing, Neurology

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Proceedings Article | 15 March 2019 Paper

Offset regression networks for view plane estimation in 3D fetal ultrasound

Alexander Schmidt-Richberg, Nicole Schadewaldt, Tobias Klinder, Matthias Lenga, Robert Trahms, Earl Canfield, David Roundhill, Cristian Lorenz

Proceedings Volume 10949, 109493K (2019) https://doi.org/10.1117/12.2512697

KEYWORDS: Fetus, Ultrasonography, Abdomen, Network architectures, 3D image processing, Neural networks

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Proceedings Article | 2 March 2018 Paper

Model based rib-cage unfolding for trauma CT

Jens von Berg, Tobias Klinder, Cristian Lorenz

Proceedings Volume 10574, 105742E (2018) https://doi.org/10.1117/12.2293467

KEYWORDS: 3D modeling, Computed tomography, 3D image processing, Image registration, Lung, Injuries, Spine, Data acquisition, Bone, Image segmentation

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Proceedings Article | 2 March 2018 Presentation + Paper

Automated abdominal plane and circumference estimation in 3D US for fetal screening

C. Lorenz, T. Brosch, C. Ciofolo-Veit, T. Klinder, T. Lefevre, A. Cavallaro, I. Salim, A. Papageorghiou, C. Raynaud, D. Roundhill, L. Rouet, N. Schadewaldt, A. Schmidt-Richberg

Proceedings Volume 10574, 105740I (2018) https://doi.org/10.1117/12.2292729

KEYWORDS: Fetus, Spine, Abdomen, Image segmentation, Stomach, 3D image processing

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Proceedings Article | 2 March 2018 Paper

Spine centerline extraction and efficient spine reading of MRI and CT data

C. Lorenz, N. Vogt, P. Börnert, T. Brosch

Proceedings Volume 10574, 1057425 (2018) https://doi.org/10.1117/12.2292700

KEYWORDS: Spine, Magnetic resonance imaging, Visualization, Image segmentation, Computed tomography, Image visualization, Convolutional neural networks, Image processing

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Proceedings Article | 3 March 2017 Paper

Spine segmentation from C-arm CT data sets: application to region-of-interest volumes for spinal interventions

C. Buerger, C. Lorenz, D. Babic, J. Hoppenbrouwers, R. Homan, R. Nachabe, J. Racadio, M. Grass

Proceedings Volume 10135, 101351N (2017) https://doi.org/10.1117/12.2249031

KEYWORDS: Image segmentation, Spine, X-ray computed tomography, 3D image processing, Data modeling, X-rays, Surgery, Image quality, Computed tomography, Image fusion, 3D modeling

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Proceedings Article | 21 March 2016 Paper

Localization of skeletal and aortic landmarks in trauma CT data based on the discriminative generalized Hough transform

Cristian Lorenz, Eberhard Hansis, Jürgen Weese, Heike Carolus

Proceedings Volume 9784, 978420 (2016) https://doi.org/10.1117/12.2216251

KEYWORDS: Hough transforms, Computed tomography, Image segmentation, Spatial resolution, Image resolution, Pathology, Machine learning, Pattern recognition, Image analysis, Data modeling, Adaptive optics, Head, Performance modeling, Image processing

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Proceedings Article | 21 March 2016 Paper

Learning from redundant but inconsistent reference data: anatomical views and measurements for fetal brain screening

I. Waechter-Stehle, T. Klinder, J.-M. Rouet, D. Roundhill, G. Andrews, A. Cavallaro, M. Molloholli, T. Norris, R. Napolitano, A. Papageorghiou, C. Lorenz

Proceedings Volume 9784, 97841A (2016) https://doi.org/10.1117/12.2216088

KEYWORDS: 3D metrology, Brain, Image segmentation, Ultrasonography, 3D acquisition, 3D modeling, Data modeling, Image analysis, Fetus, Head, Skull, Eye models, Biometrics, Optical inspection

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Proceedings Article | 21 March 2016 Paper

SVM-based failure detection of GHT localizations

T. Blaffert, C. Lorenz, H. Nickisch, J. Peters, J. Weese

Proceedings Volume 9784, 97841J (2016) https://doi.org/10.1117/12.2216855

KEYWORDS: Image segmentation, Medical imaging, Hough transforms, Model-based design, Image analysis, Machine learning, Pattern recognition, Heart, Arteries, Veins, 3D modeling, Data modeling, Computed tomography, Inspection

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Proceedings Article | 18 March 2016 Paper

Surface driven biomechanical breast image registration

Björn Eiben, Vasileios Vavourakis, John Hipwell, Sven Kabus, Cristian Lorenz, Thomas Buelow, Norman Williams, M. Keshtgar, David Hawkes

Proceedings Volume 9786, 97860W (2016) https://doi.org/10.1117/12.2216728

KEYWORDS: Image registration, Breast, Modeling, Magnetic resonance imaging, Natural surfaces, Breast cancer, Tissues, Detection and tracking algorithms, Skin, Computed tomography, Nipple, Surgery

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Proceedings Article | 20 March 2015 Paper

Adaptation of an articulated fetal skeleton model to three-dimensional fetal image data

Tobias Klinder, Hannes Wendland, Irina Wachter-Stehle, David Roundhill, Cristian Lorenz

Proceedings Volume 9413, 94130Q (2015) https://doi.org/10.1117/12.2081139

KEYWORDS: 3D modeling, 3D image processing, Data modeling, Motion models, 3D acquisition, Image segmentation, Kinematics, Magnetic resonance imaging, Visual process modeling, Fetus

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Proceedings Article | 21 March 2014 Paper

Failure analysis for model-based organ segmentation using outlier detection

Axel Saalbach, Irina Wächter Stehle, Cristian Lorenz, Jürgen Weese

Proceedings Volume 9034, 903408 (2014) https://doi.org/10.1117/12.2041922

KEYWORDS: Image segmentation, Failure analysis, Image processing, Reliability, Error analysis, Diagnostics, Medical imaging, Computed tomography, Sensors, Image quality

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Proceedings Article | 21 March 2014 Paper

Towards a comprehensive CT image segmentation for thoracic organ radiation dose estimation and reporting

Cristian Lorenz, Heike Ruppertshofen, Torbjörn Vik, Peter Prinsen, Jens Wiegert

Proceedings Volume 9034, 90340A (2014) https://doi.org/10.1117/12.2042998

KEYWORDS: Tissues, Bone, Breast, Image segmentation, Lung, Heart, Spine, Monte Carlo methods, Natural surfaces, Cancer

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Proceedings Article | 12 March 2014 Paper

Breast deformation modelling: comparison of methods to obtain a patient specific unloaded configuration

Björn Eiben, Vasileios Vavourakis, John Hipwell, Sven Kabus, Cristian Lorenz, Thomas Buelow, David Hawkes

Proceedings Volume 9036, 903615 (2014) https://doi.org/10.1117/12.2043607

KEYWORDS: Breast, Magnetic resonance imaging, Modeling, Computer simulations, Image segmentation, Protactinium, Medical imaging, In vivo imaging, Data modeling, Chest

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Proceedings Article | 17 February 2012 Paper

Automated volume of interest delineation and rendering of cone beam CT images in interventional cardiology

Cristian Lorenz, Dirk Schäfer, Peter Eshuis, John Carroll, Michael Grass

Proceedings Volume 8316, 831606 (2012) https://doi.org/10.1117/12.910962

KEYWORDS: Data modeling, Spine, Computed tomography, Image segmentation, Performance modeling, X-ray computed tomography, 3D image processing, Cardiology, Lung, Chest

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Proceedings Article | 15 March 2011 Paper

Shape model training for concurrent localization of the left and right knee

Heike Ruppertshofen, Cristian Lorenz, Sarah Schmidt, Peter Beyerlein, Zein Salah, Georg Rose, Hauke Schramm

Proceedings Volume 7962, 796241 (2011) https://doi.org/10.1117/12.878090

KEYWORDS: Data modeling, Detection and tracking algorithms, Radiography, Hough transforms, Image segmentation, Performance modeling, Medical imaging, Image processing, Databases, Applied sciences

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Proceedings Article | 11 March 2011 Paper

Temporal subtraction of chest radiographs compensating pose differences

Jens von Berg, Jalda Dworzak, Tobias Klinder, Dirk Manke, Adrian Kreth, Hans Lamecker, Stefan Zachow, Cristian Lorenz

Proceedings Volume 7962, 79620U (2011) https://doi.org/10.1117/12.877568

KEYWORDS: 3D modeling, Radiography, Image registration, 3D acquisition, Image quality, 3D image processing, Distance measurement, Chest imaging, 3D image reconstruction, Foam

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Proceedings Article | 13 March 2010 Paper

A completely automated processing pipeline for lung and lung lobe segmentation and its application to the LIDC-IDRI data base

Thomas Blaffert, Rafael Wiemker, Hans Barschdorf, Sven Kabus, Tobias Klinder, Cristian Lorenz, Nicole Schadewaldt, Ekta Dharaiya

Proceedings Volume 7623, 762347 (2010) https://doi.org/10.1117/12.844760

KEYWORDS: Lung, Image segmentation, Emphysema, Computed tomography, Databases, Tissues, Image processing algorithms and systems, Lung cancer, Data modeling, Visualization

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Proceedings Article | 24 February 2010 Paper

Anatomical modeling of the bronchial tree

Gerrit Hentschel, Tobias Klinder, Thomas Blaffert, Thomas Bülow, Rafael Wiemker, Cristian Lorenz

Proceedings Volume 7625, 76251F (2010) https://doi.org/10.1117/12.844485

KEYWORDS: Lung, Image segmentation, Nomenclature, Chronic obstructive pulmonary disease, Statistical modeling, Computed tomography, Data modeling, Image processing, Detection and tracking algorithms, Algorithm development

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Proceedings Article | 27 March 2009 Paper

Automated vertebra identification in CT images

Matthias Ehm, Tobias Klinder, Reinhard Kneser, Cristian Lorenz

Proceedings Volume 7259, 72590B (2009) https://doi.org/10.1117/12.811836

KEYWORDS: Spine, Image segmentation, Computed tomography, Image registration, Data modeling, Systems modeling, Hough transforms, Image processing, Rigid registration, Virtual colonoscopy

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Proceedings Article | 27 March 2009 Paper

Free-breathing intra- and intersubject respiratory motion capturing, modeling, and prediction

Tobias Klinder, Cristian Lorenz, Jörn Ostermann

Proceedings Volume 7259, 72590T (2009) https://doi.org/10.1117/12.811990

KEYWORDS: Motion models, Lung, Image segmentation, Data modeling, Principal component analysis, Performance modeling, Data acquisition, Statistical modeling, Radiotherapy, Motion estimation

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Proceedings Article | 14 March 2009 Paper

Advanced processing for motion-compensated reconstruction in cardiac cone-beam CT

Udo van Stevendaal, Peter Forthmann, Thomas Köhler, Jens von Berg, Cristian Lorenz, Michael Grass

Proceedings Volume 7258, 725833 (2009) https://doi.org/10.1117/12.811086

KEYWORDS: Heart, Motion models, Reconstruction algorithms, Data modeling, Image quality, Tissues, Computed tomography, Motion estimation, Detection and tracking algorithms, Lung

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