نتایج جستجو برای: طبقه‌بندی نظارت‌شده MLC

تعداد نتایج: 2708  

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه ملی مهندسی ژنتیک وزیست فناوری 1391

مطالعه حاضر به منظور بررسی تاثیر bmp-4 بر تمایز قلبی سلول های بنیادی بافت چربی (adscs) طراحی شد. به این منظور، adsc ها از بافت چربی اینگوینال موش جداسازی و کشت داده شدند. برای تمایز قلبی، adsc ها به مدت 5 روز در محیط حاوی fbs یا kosr با غلظتهای مختلف فاکتور bmp-4 تیمار شدند. 21 روز پس از آغاز تمایز، بیان فاکتور های نسخه برداری و ژن های اختصاصی قلب بررسی شد. به علاوه، امکان بهینه سازی محیط تمایز...

Journal: :Genetics 1998
A M Rushforth C C White P Anderson

Caenorhabditis elegans contains two muscle regulatory myosin light chain genes, mlc-1 and mlc-2. To determine their in vivo roles, we identified deletions that eliminate each gene individually and both genes in combination. Functions of mlc-1 are redundant to those of mlc-2 in both body-wall and pharyngeal muscle. mlc-1(0) mutants are wild type, but mlc-1(0) mlc-2(0) double mutants arrest as in...

1998
Ron Kohavi Dan Sommerfield

MLC++, the Machine Learning library in C++ is a set of libraries and utilities that can aid developers in interfacing machine learning technology, aid users in selecting an appropriate algorithm for a given task, and aid researchers in developing new algorithms, especially hybrid algorithms and multi-strategy algorithms. D2.1.2.1 Motivation for MLC++ A learning algorithm cannot outperform any o...

2017
Taro Murai Yukiko Hattori Chikao Sugie Hiromitsu Iwata Michio Iwabuchi Yuta Shibamoto

Multileaf collimator (MLC) technology has been newly introduced with the Cyberknife system. This study investigated the advantages of this system compared with the conventional circular collimator (CC) system. Dosimetric comparisons of MLC and CC plans were carried out. First, to investigate suitable target sizes for the MLC mode, MLC and CC plans were generated using computed tomography (CT) i...

Ahmad Mostaar, Amin Asgharzadeh Alvar Tahmine Hoseinkhani

Introduction: Nowadays tendency to apply more degrees of freedom in high-tech radiotherapy systems, and consequent complex process to optimize dose calculation and delivery algorithms, is a challenge of radiation therapy optimization. Faster MLC speed, dose rate, Gantry angle variation, and other degrees, which have been utilized in IMRT, IMAT, VMAT, improved modulation of inte...

Journal: :journal of research in medical sciences 0
najmeh dabbagh ahmadreza soroosh zhamak khorgami abolfazl shojaeifard mehdi jafari ali ghorbani abdehgah

background: surgical technique using small-diameter  instruments and single-incision laparoscopy are two new options for less invasive laparoscopic cholecystectomy (lc). in this study, we have compared mini-lc (mlc) with single-incision lc (silc). materials and methods: this study is a randomized clinical trial conducted on the patients diagnosed with  symptomatic cholelithiasis who underwent l...

Journal: :Journal of smooth muscle research = Nihon Heikatsukin Gakkai kikanshi 2008
Masaaki Higashihara Mariko Watanabe Shigeki Usuda Kouji Miyazaki

Myosin light chain genes of human hematopoietic cells have not been fully characterized. We previously reported the cloning of the full-length cDNAs of 20 kDa regulatory myosin light chain (MLC-2), named as MLC-2A, from Meg-01, a human megakaryoblastic leukemia cell line (J. Smooth Muscle Res. 37: 25-38, 2001). We now cloned another MLC-2 isoforms from human platelets and U937, a human monocyti...

Background: Recently, multileaf collimators (MLC) have become an important part of any LINAC collimation system because they reduce the treatment planning time and improve the conformity. Important factors that affect MLCs collimation performance are leaves material composition and their thickness.Objective: In this study, we investigate main dosimetric parameters of a typical MLC includi...

Journal: :Physics in medicine and biology 2013
G A Davies P Clowes D McQuaid P M Evans S Webb G Poludniowski

The AccuLeaf mMLC featuring four multileaf-collimator (MLC) banks has been used for the first time for an experimental comparison of conventional two-bank with novel four-bank dynamic MLC tracking of a two-dimensional sinusoidal respiratory motion. This comparison was performed for a square aperture, and for three conformal treatment apertures from clinical radiotherapy lung cancer patients. Th...

2017
Kelly C. Younge John R. Kuchta Justin K. Mikell Benjamin Rosen Jeremy S. Bredfeldt Martha M. Matuszak

PURPOSE Advanced radiotherapy delivery systems designed for high-dose, high-precision treatments often come equipped with high-definition multi-leaf collimators (HD-MLC) aimed at more finely shaping radiation dose to the target. In this work, we study the effect of a high definition MLC on spine stereotactic body radiation therapy (SBRT) treatment plan quality and plan deliverability. METHODS...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید