Despite several decades of research into segmentation techniques, unsupervised medical image segmentation is barely usable in a clinical context, and still at vast user time expense. The Fast Marching method is an established segmentation technique for generic spaces, which typically requires manual initialisation. This paper illustrates unsupervised organ segmentation through the use of a nove...

We propose a method for the reconstruction of volumetric fetal MRI from 2D slices, comprising super-resolution reconstruction of the volume interleaved with slice-to-volume registration to correct for the motion. The method incorporates novel intensity matching of acquired 2D slices and robust statistics which completely excludes identified misregistered or corrupted voxels and slices. The reco...

BACKGROUND In patients with ischemic heart disease, accurate assessment of the extent of myocardial perfusion deficit may be important in predicting prognosis of clinical cardiac outcomes. The aim of this study was to compare the ability of three dimensional (3D) and of two dimensional (2D) multi-slice myocardial perfusion imaging (MPI) using cardiovascular magnetic resonance (CMR) in determini...

Introduction Chronic aortic and mitral regurgitation place an additional hemodynamic load on the left ventricle (LV). Substantial LV chamber dilation, as assessed with echocardiographic techniques, is commonly used as an indirect marker of volume overload. However, for asymptomatic and minimally symptomatic patients the direct measure of regurgitant volume would be the key parameter for patient...

In this paper, we propose a fast automatic method that segments white matter hyperintensities (WMH) in 3D brain MR images, using a fully convolutional network (FCN) and transfer learning. This FCN is the Visual Geometry Group neural network (VGG for short) pre-trained on ImageNet for natural image classification, and fine tuned with the training dataset of the MICCAI WMH Challenge. We consider ...

Introduction In brain perfusion measurements with Arterial Spin Labeling (ASL), blood is used as an endogenous tracer by inversion of the longitudinal magnetization of spins in blood. Because typical perfusion signal is low (1-2%) as compared to background signal, alternate images are acquired with and without labeling rendering perfusion images after subtraction. However, subtraction does not ...

Size, shape, volume fraction and distribution of embedded g/ phase in g phase has direct effect on strength of INCONEL alloy. Microstructure parameters of INCONEL phases are quantified from microstructure images using transmission electron microscopy (TEM). Different TEM sample preparation techniques were used to study INCONEL 738 alloy microstructure for transmission electron micros...

The principles of Ultrasonic Computed Tomography (UCT) are reviewed in this paper. The UCT is a powerful nondestructive technique in medicine and recently in industry to reveal an image of a slice of an object or body. The advantage of UCT over other conventional techniques in imaging is that a computed tomogram yields quantitative information about the section of interest. Experimental works o...

The moist sample shrinks during drying and the non-uniformity shrinkage involves stresses in the body. The aim of the present work is simulating deformations and drying-induced stresses of carrot slice during a convective drying. The effect of shrinkage on the heat and mass transfer profiles were considered. Non-constant physical and thermal properties were also incorporated in the model and th...

The moist sample shrinks during drying and the non-uniformity shrinkage involves stresses in the body. The aim of the present work is simulating deformations and drying-induced stresses of carrot slice during a convective drying. The effect of shrinkage on the heat and mass transfer profiles were considered. Non-constant physical and thermal properties were also incorporated in the model and th...