A procedure for the preparation of a gap junction fraction from the uteri of pregnant rats is described. The uterine gap junctions, when examined by electron microscopy of thin sections and in negatively stained preparations, were similar to gap junctions isolated from heart and liver. Major proteins of similar apparent molecular weight (Mr 28,000) were found in gap junction fractions isolated ...

BACKGROUND Segmentation of the magnetic resonance (MR) images is fundamentally important in medical image analysis. Intensity inhomogeneity due to the unknown noise and weak boundary makes it a difficult problem. METHOD The paper presents a novel level set geodesic model which integrates the local and the global intensity information in the signed pressure force (SPF) function to suppress the...

During ischemia, the transport of molecules in the extracellular space (ECS) is obstructed in comparison with healthy brain tissue, but the cause is unknown. Extracellular tortuosity (lambda), normally 1.6, increases to 1.9 in ischemic thick brain slices (1000 microm), but drops to 1.5 when 70,000 Mr dextran (dex70) is added to the tissue as a background macromolecule. We hypothesized that the ...

PURPOSE To describe the details and experience of implementing a MR-only workflow in the clinic for simulation and planning of prostate cancer patients. METHODS Forty-eight prostate cancer patients from June 2016 - Dec 2016 receiving external beam radiotherapy were scheduled to undergo MR-only simulation. MR images were acquired for contouring (T2w axial, coronal, sagittal), synthetic-CT gene...

Poly(vinyl alcohol) (PVA) cryogel is a biocompatible, synthetic hydrogel, compatible with magnetic resonance (MR) imaging. It widely used as biomaterial in tissue scaffolds and mimics to test various diagnostic techniques. The aim of this study characterise the effect varying PVA concentration, molecular weight (MW) manufacturing protocol on viscoelastic mechanical properties MR T2 relaxation t...

Target Audience: Researchers and clinicians interested in real-time MRI and image-guided therapies. Purpose: MRI and ultrasound (US) imaging have complementary properties and advantages, with great soft tissue contrast for the former and high acquisition rates for the latter. For this reason several noteworthy efforts have been made to combine the two imaging modalities. A characteristic of the...

introduction: fragile x syndrome (fxs) is one of the most prevalent genetic causes of developmental disability, representing the most frequent form of inherited severe cognitive deficit. the present study was undertaken to investigate fxs and its prevalence in moderate mentally retarded people in patients. materials and methods: nineteen people with moderate mental retardation (mr) who were cli...