𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Diffusion of water in tissues and MRI

✍ Scribed by U. F. Hazlewood; H. E. Rorschach; C. Lin

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
176 KB
Volume
19
Category
Article
ISSN
0740-3194

No coin nor oath required. For personal study only.

✦ Synopsis

The purpose of this paper is to present an overview of the diffusive behavior of water in biological tissues. The analysis shows that obstructive barriers would have to occupy very large volume fractions in order to account for the reduction in the diffusion coefficient (D) observed in biological systems. Generally, most models lead to the supposition that a substantial fraction (20-40%) of the cell water is hydration water, or that the diffusion coefficient of the cytoplasmic water is reduced substantially from the free water value. Thus, the conclusion that a substantial fraction of cell water has diffusive properties that are altered by the macromolecules of the cytoplasm seems inescapable. The impact of these findings on MRI remain to be determined.

πŸ“œ SIMILAR VOLUMES

Visualization of neural tissue water com
Visualization of neural tissue water compartments using biexponential diffusion tensor MRI
✍ B.A. Inglis; E.L. Bossart; D.L. Buckley; E.D. Wirth III; T.H. Mareci πŸ“‚ Article πŸ“… 2001 πŸ› John Wiley and Sons 🌐 English βš– 347 KB

## Abstract The apparent diffusion tensor (ADT) imaging method was extended to account for multiple diffusion components. A biexponential ADT imaging experiment was used to obtain separate images of rapidly and slowly diffusing water fractions in excised rat spinal cord. The fast and slow component

Non-Brownian water self-diffusion in lun
Non-Brownian water self-diffusion in lung tissue
✍ M. Kveder; G. Lahajnar; R. Blinc; I. Zupančič πŸ“‚ Article πŸ“… 1988 πŸ› John Wiley and Sons 🌐 English βš– 233 KB

Pulsed field gradient NMR measurements of rat lung tissue have shown that the apparent water self-diffusion coefficient is nearly an order of magnitude smaller than that of free water and moreover is not constant but varies as the inverse square root of the diffusion time. The mean square displaceme

Adipose tissue distribution in children:
Adipose tissue distribution in children: Automated quantification using water and fat MRI
✍ Joel Kullberg; Ann-Katrine Karlsson; Eira Stokland; PΓ€r-Arne Svensson; Jovanna D πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 256 KB

## Abstract ## Purpose: To develop and validate a method for rapid acquisition and automated processing of magnetic resonance (MR) images for analysis of abdominal adipose tissue distribution in children. ## Materials and Methods: The study included 21 (10 girls, 11 boys) healthy 5‐year‐old chil

Low-frequency conductivity tensor of rat
Low-frequency conductivity tensor of rat brain tissues inferred from diffusion MRI
✍ Masaki Sekino; Hiroyuki Ohsaki; Sachiko Yamaguchi-Sekino; Norio Iriguchi; Shoogo πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 314 KB

## Abstract Conductivity tensor maps of the rat brain were obtained using diffusion magnetic resonance imaging (MRI). Signal attenuations in the cortex and the corpus callosum were measured using the stimulated echo acquisition mode (STEAM) sequence with __b__ factors up to 6000 s/mm^2^. Our previo

Identification of brown adipose tissue i
Identification of brown adipose tissue in mice with fat–water IDEAL-MRI
✍ Houchun H. Hu; Daniel L. Smith Jr; Krishna S. Nayak; Michael I. Goran; Tim R. Na πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 387 KB

## Abstract ## Purpose: To investigate the feasibility of using IDEAL (Iterative Decomposition with Echo Asymmetry and Least squares estimation) fat–water imaging and the resultant fat fraction metric in detecting brown adipose tissue (BAT) in mice, and in differentiating BAT from white adipose ti