نتایج جستجو برای: phantoms gels

تعداد نتایج: 34820  

2016
Tsviya Nayhoz Eran A. Barnoy Dror Fixler

Tissue-like phantoms are widely used as a model for mimicking the optical properties of live tissue. This paper presents the results of a diffusion reflection method and fluorescence lifetime imaging microscopy measurements of fluorescein-conjugated gold nanorods in solution, as well as inserted in solid tissue-imitating phantoms. A lack of consistency between the fluorescence lifetime results ...

Journal: :The journal of medical investigation : JMI 2010
Kenji Okazaki Akira Tangoku Tadaoki Morimoto Ryosuke Kotani Keigo Hattori Emiko Yasuno Masatake Akutagawa Yohsuke Kinouchi

The objective of this study is to develop a device for noninvasive local tissue electrical impedance tomography (EIT) using divided electrodes with guard electrodes and to validate its effectiveness using bioequivalent phantoms. For this purpose, we prepared a measurement device and bioequivalent phantoms, measured the electrical characteristics of the phantoms, and validated the method using t...

2004
William P. Argo Kathleen Hintenlang David E. Hintenlang

A breast tissue-equivalent series (BRTES) of phantoms is manufactured to mimic both the attenuation and the density of the range of glandular and adipose tissue compositions encountered in mammography. The BRTES simulates breast tissues across the range of 20% to 70% glandularity and can be assembled in a variety of thicknesses to represent a compressed breast thickness corresponding to glandul...

SA Mortazavi

Mucosa-adhesive gels can be used as a useful mean of delivering drugs to or via mucosal membranes, and in particular buccal mucosa. Carbomers are among the best mucosa-adhesive materials known. The aim of this study was to compare the results obtained from the mucosa-adhesive strength of aqueous gels containing Carbomers, either alone or in combination, to the data obtained from assessing the d...

Journal: :asian journal of sports medicine 0
hamid karimi department of plastic and reconstructive surgery, motahari burn hospital, tehran university of medical sciences, tehran, iran mohammadreza mobayen burn research center, tehran university of medical sciences, tehran, iran; burn research center of tehran, motahri burn hospital, shahid yasami street, vali e asr street, tehran, iran. aboulhasan alijanpour department of plastic and reconstructive surgery, motahari burn hospital, tehran university of medical sciences, tehran, iran

purpose our study aims to investigate the effectiveness of other treatment methods for burn related scarring and to determine the possibility of their routine administration in similar clinical settings. methods through a prospective study, 66 patients were enrolled to receive either the conventional pressure garment therapy (pgt) and silicone (control group) or exercise and physiotherapy (case...

Background: The purpose of this study is to fabricate inexpensive in-house low cost homogeneous and heterogeneous human equivalent thorax phantom and assess the dose accuracy of the Treatment Planning Systems (TPS) calculated values for different lung treatment dosimetery. It is compared with Thermoluminescent Dosimeter (TLD) measurement. Materials and Methods: Homogeneous and heterogeneous tho...

SA Mortazavi

Mucosa-adhesive gels can be used as a useful mean of delivering drugs to or via mucosal membranes, and in particular buccal mucosa. Carbomers are among the best mucosa-adhesive materials known. The aim of this study was to compare the results obtained from the mucosa-adhesive strength of aqueous gels containing Carbomers, either alone or in combination, to the data obtained from assessing the d...

2015
Alexis I. Farrer Henrik Odéen Joshua de Bever Brittany Coats Dennis L. Parker Allison Payne Douglas A. Christensen

BACKGROUND A tissue-mimicking phantom that accurately represents human-tissue properties is important for safety testing and for validating new imaging techniques. To achieve a variety of desired human-tissue properties, we have fabricated and tested several variations of gelatin phantoms. These phantoms are simple to manufacture and have properties in the same order of magnitude as those of so...

2016
WAYNE KREIDER ADAM D. MAXWELL MICHAEL R. BAILEY Pooya Movahed

Submitted for the DFD16 Meeting of The American Physical Society Ultrasound induced bubble clusters and tunnels in tissuemimicking agar phantoms1 POOYA MOVAHED, Univ of Illinois Urbana, WAYNE KREIDER, ADAM D. MAXWELL, MICHAEL R. BAILEY, Univ of Washington, JONATHAN B. FREUND, Univ of Illinois Urbana — Soft tissue fractionation induced by acoustic cavitation is desired for non-invasive tissue re...

2006
CHOONSIK LEE JAI-KI LEE

Phantoms for radiation dosimetry, including physical phantoms for radiological use in medicine in particular, were introduced as early as the 1910s [1] while those for radiation protection dosimetry started to evolve in the late 1950s. This innovation was driven partly from the consensus that dose quantity for protection purposes should be assessed in “receptor conditions” instead of the tradit...

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