نتایج جستجو برای: gelatin phantom
تعداد نتایج: 26329 فیلتر نتایج به سال:
In diffuse optical tomography (DOT) and spectroscopy (DOS) using handheld probes, tissue curvature can cause bad fiber-to-tissue contact. Understanding minimizing image artifacts caused by these coupling errors would significantly improve DOT DOS quality. this work, we utilized Monte Carlo simulations experiments with gelatin-Intralipid phantoms to systematically study the influence of source o...
A system to integrate microwave imaging with optical colonoscopy is presented. The overarching goal improve the prevention and early diagnosis of one main health economic burdens an increasingly aging population, i.e., colorectal cancer. For a colonoscopy, gold standard for cancer diagnosis, 22% polyps are not detected, risk after negative can be up 7.9%. To remedy this, able generate alarm whe...
N. Hata, P. Blumenfeld, S. DiMaio, K. Zou, S. Haker, C. M. Tempany Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States INTRODUCTION Magnetic Resonance Image-guided prostate biopsy provides an alternative approach to detect and diagnose prostate cancer (1-3). The biopsies targeted at suspected tumor foci, observed in 1.5T and/or 0.5T pre-procedural image...
1. In pure gelatin solutions the conductivity of the solution increases with increasing concentrations, regardless of the hydrogen ion concentration. The actual value of the specific conductivity is greater at that reaction where the degree of ionization is greater. 2. The addition of gelatin in increasing concentrations to a 0.6 per cent sodium chloride solution affects the conductivity of tha...
The efficacy of gelatin for the recovery of Neisseria meningitidis from blood cultures was evaluated in a clinical setting. The organism was isolated from seven patients with meningococcal infections in blood culture media containing 1% gelatin. In contrast, only two blood cultures from these patients were positive in media without gelatin (P less than 0.05). Gelatin did not influence the recov...
introduction based on task group no. 43 (tg-43u1) recommendations, water phantom is proposed as a reference phantom for the dosimetry of brachytherapy sources. the experimental determination of tg-43 parameters is usually performed in water-equivalent solid phantoms. the purpose of this study was to determine the conversion factors for equalizing solid phantoms to water. materials and methods t...
Gelatin given by vein to doubly depleted dogs (anemic and hypoproteinemic) gives no immediate toxic response, no anaphylactoid reactions, and may contribute something to the building of new hemoglobin and plasma protein. Gelatin given by vein during 1 to 2 weeks (total 3 to 17 gm. per kilo) usually causes serious disturbances-inhibition of blood protein production, signs of intoxication, much w...
In order to develop a systemically administered safe and effective nonviral gene delivery system, cellular interactions and plasmid DNA transfection with poly(ethylene glycol)-modified (PEGylated) gelatin nanoparticles were examined. The DNA-containing nanoparticles were prepared by a controlled water-ethanol solvent displacement method. The nanoparticles were characterized for particle size, s...
Background and purpose: Adipose - drived stem cells are multipotent cells that capable to diffrentiate in to osteogenic cells. On the other hand, the scaffold of chitosan and gelatin are biodegradable and compatible used for tissue repair. This study evaluated the repair of femoral bone defect using adipose-derived stem cells on gelatin – chitosan membrane in adult Albino Wistar rats by radiog...
Demand of gelatin for food and pharmaceutical application is increasing because it is one of the most widely used food ingredients. Fish gelatin represents one of the important types of gelatin from other sources other than mammalian gelatins and it may thus be considered as an alternative to mammalian gelatin for use in various food and pharmaceutical applications. The main objective of the st...
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