A 77-year-old female presented to our facility with a fi ve-year history of progressive urinary bladder retention and voiding diffi culties. She underwent a pelvic magnetic resonance imaging (MRI) examination as a part of her lower urinary tract symptoms evaluation, and for treatment planning. MRI with a torso phased-array superfi cial coil was performed in a 1.5T magnetic fi eld equipment. We ...

INTRODUCTION Central airway nitric oxide flux (J'(awNO)) and peripheral airway/alveolar nitric oxide concentration (C(ANO)) during asthma exacerbation has not been investigated after correction for axial NO back-diffusion. METHODS After measuring exhaled NO (fraction of exhaled nitric oxide (F(E)NO); ppb) at 50, 100, 150 and 200 ml/s, J'(awNO) (nl/s) and C(ANO) (ppb) were calculated using the...

Neuropathological and neuroimaging studies have reported significant changes in white matter in psychiatric and neurodegenerative diseases. Diffusion tensor imaging (DTI), a recently developed technique, enables the detection of microstructural changes in white matter. It is a noninvasive in vivo technique that assesses water molecules' diffusion in brain tissues. The most commonly used paramet...

Diffusion tensor imaging has been used extensively as a research tool to understand the structural changes associated with white matter pathology. Using water diffusion as the basis to construct anatomic details, diffusion tensor imaging offers the potential to identify structural and functional adaptations before gross anatomical changes, such as lesions and tumors, become apparent on conventi...

Shin, Hye-Won, Peter Condorelli, and Steven C. George. A new and more accurate technique to characterize airway nitric oxide using different breath-hold times. J Appl Physiol 98: 1869–1877, 2005. First published December 23, 2004; doi:10.1152/japplphysiol.01002.2004.— Exhaled nitric oxide (NO) arises from both airway and alveolar regions of the lungs, which provides an opportunity to characteri...

Photothermal diffusion-wave imaging is a promising technique for the analysis of a range of media. However, traditional diffusion-wave techniques are limited by the physics of parabolic diffusion and can only produce depth-integrated planar images. Here, we report a depth-resolved photothermal imaging modality, henceforth termed truncated-correlation photothermal coherence tomography (TC-PCT). ...

The dynamics of a closed loop thermosyphon are considered. The model assumes a prescribed heat flux along the loop wall and the contribution of axial diffusion. The well-posedness of the model which consists of a coupled ODE and PDE is shown for both the case with diffusion and without diffusion. Boundedness of solutions, the existence of an attractor, and an inertial manifold is proven, and an...

In the Biomedical Medical Research laboratory in St. Louis Missouri there is an ongoing project to characterize water diffusion in fixed baboon brain using diffusion weighted magnetic resonance imaging as a means of monitoring development throughout gestation. Magnetic resonance images can be made sensitive to diffusion by applying magnetic field gradients during the pulse sequence. Results fro...

The adsorption of basic dyes from aqueous solutions onto granular activated carbon and natural zeolite was studied using a fixed bed column. The design procedures for fixed bed adsorption columns were investigated for two basic dyes Maxilon Goldgelb GL EC 400 % (MG-400) and Maxilon Schwarz FBL-01 300 % (MS-300). A computer program based on the solid diffusion control model has been developed. T...

Classical Taylor-Aris dispersion theory is extended to describe the transport of suspensions of self-propelled dipolar cells in a tubular flow. General expressions for the mean drift and effective diffusivity are determined exactly in terms of axial moments, and compared with an approximation a la Taylor. As in the Taylor-Aris case, the skewness of a finite distribution of biased swimming cells...