نتایج جستجو برای: soft tissue phantom

تعداد نتایج: 1011597  

Journal: :international journal of reproductive biomedicine 0
mojgan kalantari arezou negahdari shima roknsharifi mostafa qorbani

background: abdominal circumference (ac), biparietal diameters (bpd) and femoral length (fl) are now the main parameters used to obtain estimated fetal weight (efw). although the role of soft tissue parameters in determining fetal weight was proved but clinical attention to mid-thigh soft tissue thickness (stt) is limited. objective: to find the impression of stt on birth weight (bw) and repres...

Journal: :journal of biomedical physics and engineering 0
a. amjadi biomedical physics and laser laboratory, physics department, sharif university of technology, tehran, iran f. motaghian biomedical physics and laser laboratory, physics department, sharif university of technology, tehran, iran

background: laser-tissue interaction on low-level laser therapy (lllt) has widespread medical applications (e.g., improved wound healing). the tensile strength of radiated tissue by lllt is known to be increased mainly because of cross collagen bands developed after radiation. objective: in this work, we studied the instantaneous effect of radiation of polarized laser beam on the viscoelastic t...

Journal: :journal of dental materials and techniques 0
habib ollah ghanbari 1professor of periodontics, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) maryam gharechahi 2assistant professor of endodontics, dental materials research center, school of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) majid ghanbarzadeh 3associate professor of orthodontics, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) azam nikkhaah raankoohi dentist parisa dastmalchi 5dental student, school of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

introduction: the purpose of this preliminary study was to evaluate the periodontal condition of intruded molars in various phases of treatments. methods: 30 patients with at least one overerupted upper first molar were selected. upper molar bands with brackets were cemented. two miniscrews were placed in the mesiopalatal and mesiobuccal aspect of the aforementioned teeth. a titanium molybdenum...

Journal: :journal of lasers in medical sciences 0
abhishek gupta devi ahilya university, indore niharika jain rajiv gandhi university of health sciences permanand garebdas makhija devi ahilya university, indore

the purpose of these case reports is to analyze the results of gingivectomy and gingival troughing to determine the evidence on the effectiveness of laser-assisted soft tissue procedures and soft tissue management in aesthetic dentistry.the patients in these case reports underwent 980 nm diode laser assisted gingivectomy and gingival troughing to achieve immediate hemostasis and moisture contro...

  Background :Soft tissue profile can be widely different in various populations. Furthermore, this profile can be also continues to change throughout life. However, there are few studies that quantitatively evaluate the soft tissue profile in Iranian population. In order to determine normal reference values of facial parts in our populations, we aimed to measure standards for facial soft tissu...

Journal: :Cancer biotherapy & radiopharmaceuticals 2016
Maryam Khazaee Moghadam Alireza Kamali Asl Parham Geramifar Habib Zaidi

PURPOSE The aim of this work is to evaluate the application of tissue-specific dose kernels instead of water dose kernels to improve the accuracy of patient-specific dosimetry by taking tissue heterogeneities into consideration. MATERIALS AND METHODS Tissue-specific dose point kernels (DPKs) and dose voxel kernels (DVKs) for yttrium-90 (90Y), lutetium-177 (177Lu), and phosphorus-32 (32P) are ...

Journal: :Medical physics 2012
J Xu D D Reh J P Carey M Mahesh J H Siewerdsen

PURPOSE As cone-beam CT (CBCT) systems dedicated to various imaging specialties proliferate, technical assessment grounded in imaging physics is important to ensuring that image quality and radiation dose are quantified, understood, and justified. This paper involves technical assessment of a new CBCT scanner (CS 9300, Carestream Health, Rochester, NY) dedicated to imaging of the ear and sinuse...

Journal: :Journal of manipulative and physiological therapeutics 2006
Gregory N Kawchuk Tasha R Liddle O Rod Fauvel Clifton Johnston

PURPOSE Palpation is used most commonly to assess tissue stiffness despite its well-known deficiencies. As an improvement, a mechanical technique known as ultrasonic indentation has been proposed. The purpose of this study was to compare the accuracy of 3 ultrasonic indentation techniques in quantifying bone displacement in a specially constructed tissue simulator. METHODS Three ultrasonic in...

2017
Jarrod A. Collins Jon S. Heiselman Jared A. Weis Logan W. Clements Amber L. Simpson William R. Jarnagin Michael I. Miga

In image-guided liver surgery (IGLS), sparse representations of the anterior organ surface may be collected intraoperatively to drive image-to-physical space registration. Soft tissue deformation represents a significant source of error for IGLS techniques. This work investigates the impact of surface data quality on current surface based IGLS registration methods. In this work, we characterize...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2006
Karim Lekadir Daniel S. Elson Jose Requejo-Isidro Christopher Dunsby James McGinty Neil Galletly Gordon Stamp Paul M. W. French Guang-Zhong Yang

Multidimensional fluorescence imaging is a powerful molecular imaging modality that is emerging as an important tool in the study of biological tissues. Due to the large volume of multi-spectral data associated with the technique, it is often difficult to find the best combination of parameters to maximize the contrast between different tissue types. This paper presents a novel framework for th...

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