Multinuclear three-dimensional solid-state MRI of bone, tooth, and synthetic calcium phosphates is demonstrated in vitro and in vivo with a projection reconstruction technique based on acquisition of free induction decays in the presence of fixed amplitude magnetic field gradients. Phosphorus-31 solid-state MRI provides direct images of the calcium phosphate constituents of bone substance and i...

The purpose of this study was to investigate the utility of MRI findings after drug-eluting beads (DEB) - transcatheter arterial chemoembolization (TACE) for hepatocellular carcinoma in predicting time to progression (TTP). This study included 48 patients with 60 lesions who underwent liver MRI within 3 months after DEB-TACE. MRI was assessed for arterial enhancement pattern, late washout, arte...

We consider dynamic scenes consisting of moving points whose motion is constrained to happen in one of a pencil of planes. This is for example the case when rigid objects move independently, but on a common ground plane (each point moves in one of a pencil of planes parallel to the ground plane). We consider stereo pairs of the dynamic scene, taken by a moving stereo system, that allow to obtai...

The goal of this work is to development an Image Processing technique to segment patterns from the MRI brain images. The main focus is to automate the segmentation of MRI images that will be fed to the diagnoses unit for automatic classification and report generation. This work also aims to enhancing the images for visual inspection by reducing noise and histogram equalization..

In clinical practice as well as in many volumetric studies we use different reorientations of the brain position towards x and y axis on the magnetic resonance imaging (MRI) scans. In order to find out whether it has an overall effect on the resulting 2D data, manual hippocampal area measurements and rotation variability of the brain (in two reoriented axes) and the skull were performed in 23 A...

the sensitivity and specificity of mammography are limited in highly fibroglandular breasts (acr density c and d). digital mammography provides increased sensitivity in young women and those with moderately dense breasts, and digital three-dimensional mammography (tomosynthesis) promises further improvement. for women with the densest breasts, however, radiography is unlikely to be the optimum ...

Purpose: Transrectal ultrasound (TRUS) is the most common image modality used in permanent prostate brachytherapy (PPI). Although providing excellent prostate visualization, TRUS images are inferior to MRI images for identifying critical structures such as neurovascular bundles (NVB). To preserve erectile function after PPI, the traumatic injury resulting from needles passing through NVB is wor...

OBJECTIVE PET using semiconductor detectors provides high-quality images of the human brain because of its high spatial resolution. To quantitatively evaluate the delineation of image details in clinical PET images, we used normalized mutual information (NMI) to quantify the similarity with images obtained through MRI. NMI is used to evaluate image quality by determining similarity with a refer...

In gray level images discontinuities in image intensity profiles is called edges. Detection of these discontinuities is essential steps in many machine vision tasks such as object recognition, motion analysis etc. In this paper, various morphological operators are used on MRI images and a new algorithm is applied to give better result. Keywords-Morphological operators, MRI images and threshold ...

conclusion adc, fa, and t2* values may quantitatively reflect the microstructural characteristics of np, therefore they could be used to detect the minimal changes of early ldd. results the adc, fa, and t2* values were different (p < 0.05) among different rois within the same disc or among corresponding rois in different level discs. while the average values of adc increased regularly with the ...