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Article
Which Criteria Applied in Multi-Phasic CT Can Predict Early Tumor Response in Patients with Hepatocellular Carcinoma Treated Using Conventional TACE: RECIST, mRECIST, EASL or qEASL?
Our study aimed to evaluate quantitative tumor response assessment (quantitative EASL-[qEASL]) on computed tomography (CT) images in patients with hepatocellular carcinoma (HCC) treated using conventional tran...
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Article
Open AccessCardiac magnetic resonance T1 and extracellular volume map** with motion correction and co-registration based on fast elastic image registration
Our aim was to investigate the technical feasibility of a novel motion compensation method for cardiac magntic resonance (MR) T1 and extracellular volume fraction (ECV) map**.
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Article
Open AccessExtracellular volume fraction map** at 3T with non-rigid image co-registration
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Article
Open AccessSymmetric Biomechanically Guided Prone-to-Supine Breast Image Registration
Prone-to-supine breast image registration has potential application in the fields of surgical and radiotherapy planning, image guided interventions, and multi-modal cancer diagnosis, staging, and therapy respo...
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Chapter and Conference Paper
Handling Non-Corresponding Regions in Image Registration
Image registration is particularly challenging if the images to be aligned contain non-corresponding regions. Using state-of-the-art algorithms typically leads to unwanted and unrealistic deformations in these...
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Chapter
Validation and Comparison of Approaches to Respiratory Motion Estimation
The accuracy of respiratory motion estimation has a direct impact on the success of clinical applications such as diagnosis, as well as planning, delivery, and assessment of therapy for lung or other thoracic ...
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Article
Tensor grid based image registration with application to ventilation estimation on 4D CT lung data
For many image registration tasks, the information contained in the original resolution of the image data is crucial for a subsequent medical analysis, e.g. accurate assessment of local pulmonary ventilation. ...
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Article
Combined correction of recovery effect and motion blur for SUV quantification of solitary pulmonary nodules in FDG PET/CT
We evaluate a fully data-driven method for the combined recovery and motion blur correction of small solitary pulmonary nodules (SPNs) in F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/comput...
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Chapter and Conference Paper
Functional Non-rigid Registration Validation: A CT Phantom Study
Validation of respiratory motion estimation is indispensable for a variety of clinical applications. For CT lung registration, current approaches employ manually defined landmark sets or contours and compute a...
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Chapter and Conference Paper
Contra Cancrum: Segmentation of Different Tissue Types in Lung Tumors from PET/CT Follow-Up Scans
The European research project ContraCancrum (Clinically Oriented Translational Cancer MultilevelModelling) aims at develo** a multi-level platform for simulating malignant tumor development and tumor as well...
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Chapter and Conference Paper
Image Registration Using Tensor Grids for Lung Ventilation Studies
In non-parametric image registration it is often not possible to work with the original resolution of the images due to high processing times and lack of memory. However, for some medical applications the info...
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Chapter and Conference Paper
Evaluation of 4D-CT Lung Registration
Non-rigid registration accuracy assessment is typically performed by evaluating the target registration error at manually placed landmarks. For 4D-CT lung data, we compare two sets of landmark distributions: a...
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Article
Combined motion blur and partial volume correction for computer aided diagnosis of pulmonary nodules in PET/CT
We present an automated scheme to correct PET max-uptake-values of small to medium-sized pulmonary nodules for motion blur and partial volume averaging. Both effects cause significant underestimation of PET ma...
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Chapter and Conference Paper
Variational Image Registration Allowing for Discontinuities in the Displacement Field
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Chapter and Conference Paper
Variational Image Registration with Local Properties
In this paper we are concerned with elastic medical image registration. By spatially varying parameters, a displacement field can be reached which is adapted to local material properties. In addition, it enabl...
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Chapter and Conference Paper
On Elastic Image Registration with Varying Material Parameters
In this paper we are concerned with elastic image registration. Usually elastic approaches assume constant material parameters and result in a smooth displacement field. This approach has its shortcomings for ...
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Chapter and Conference Paper
Estimation of Organ Motion from 4D CT for 4D Radiation Therapy Planning of Lung Cancer
The goal of this paper is to automatically estimate the motion of the tumor and the internal organs from 4D CT and to extract the organ surfaces. Motion induced by breathing and heart beating is an important u...
