BACKGROUND Multivariate imaging techniques such as dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) have been shown to provide valuable information for medical diagnosis. Even though these techniques provide new information, integrating and evaluating the much wider range of information is a challenging task for the human observer. This task may be assisted with the use of image f...

Magnetic resonance imaging (MRI) is a popular radiology technique that is used for visualizing detailed internal structure of the body. Observed MRI images are generated by the inverse Fourier transformation from received frequency signals of a MR scanner system. Previous research has demonstrated that random noise involved in the observed MRI images can be described adequately by the so-called...

Deep neural networks recently showed high performance and gained popularity in the field of radiology. However, fact that large amounts labeled data are required for training these architectures inhibits practical applications. We take advantage an unpaired image-to-image translation approach combination with a novel domain specific loss formulation to create “easier-to-segment” intermediate im...

PURPOSE To develop a tri-modality image fusion method for better target delineation in image-guided radiotherapy for patients with brain tumors. METHODS A new method of tri-modality image fusion was developed, which can fuse and display all image sets in one panel and one operation. And a feasibility study in gross tumor volume (GTV) delineation using data from three patients with brain tumor...

The research communities, technologies, and tools for image formation are diverse. On the one hand, computer vision and graphics researchers analyze incoherent light using coarse geometric approximations from optics. On the other hand, array signal processing and acoustics researchers analyze coherent sound waves using stochastic estimation theory and diffraction formulas from physics. The abil...

Introduction: Dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) is a very promising method for noninvasive assessment of renal function such as renal perfusion or glomular filtration rate. The acquisition of DCE-MRI for that purpose is usually performed during free breathing because the scan duration, necessary for data analysis, is typically in the order of several minutes. The ph...

ABSTRACTNeuroimaging allows noninvasive evaluation of the anatomy, physiology, and function of the brain. It is widely used for diagnosis, treatment planning, and treatment evaluation of neurological disorders as well as understanding functions of the brain in health and disease. Neuroimaging modalities include X-ray computed tomography (CT), magnetic resonance imaging (MRI), single photon emis...