نتایج جستجو برای: ctdi measurement

تعداد نتایج: 441251  

پژوهش حاضر بررسی رابطه انعطاف­پذیری خانواده و سبک­های هویت با نقش     واسطه­گری گرایش به تفکر انتقادی در دختران نوجوان می­باشد. بدین­منظور 306 نفر از دانش­آموزان دختر دبیرستان­های شهر کازرون به شیوه نمونه­گیری خوشه­ای به­وسیله پرسشنامه­های گرایش به تفکر انتقادی (CTDI، ریکتس، 2003)، پرسشنامه سبک­های هویت برزونسکی (1989) و انعطاف­پذیری مثبت شاکری (1382) مورد آزمون قرار گرفتند. یافته­های حاصل از ت...

2013
A. L. Chang

BACKGROUNDAND PURPOSE: CT guidance is increasingly being used to localize the epidural space during epidural steroid injections. A common concern is that CTmay be associatedwith significantly higher radiation doses comparedwith conventional fluoroscopy. The goal of this retrospective study was to determine the average dose-length product and effective dose delivered while interlaminar epidural ...

Eslam Nazemi Mohammad Jafar Tarokh

Industrial organizations are complex systems` where the interactions among the various functions such as Sales, Distribution, Manufacturing, Materials, Finance, Human Resources and Maintenance have to be man-aged towards a common purpose of delivering the customers satisfaction. However, since most of these or-ganizations have a `Functional Structure`, each function or department works towards ...

Journal: :Frontiers in artificial intelligence and applications 2022

Purpose: to investigate the application of formative evaluation online teaching “Doctor-Patient Communication Skills”. Methods: taking three classes students majored in Medical Imaging Technology (entered our college year 2018) as research objects, who are divided into experimental group and control group. The focuses on method formulative evaluation, while centers face-to-face classroom teachi...

Journal: :Egyptian Journal of Radiology and Nuclear Medicine 2021

Abstract Background To study radiation dose, image quality and low-contrast cylinder detectability from multislice CT (MSCT) abdomen by using low tube voltage the American College of Radiology (ACR) phantom. The ACR phantom (low-contrast module) was scanned with 64 MSCT scanner (Brilliance, Philips Medical System, Eindhoven, Netherlands) 80 120 KVP, utilizing different current time product (mAs...

2010
Jianwei Gu

There is a serious and growing concern about the CT dose delivered by diagnostic CT examinations or image-guided radiation therapy imaging procedures. To better understand and to accurately quantify radiation dose due to CT imaging, Monte Carlo based CT scanner models are needed. This dissertation describes the development, validation, and application of detailed CT scanner models including a G...

Introduction: This study aimed to establish the conversion factors to normalize the output dose of volumetric computed tomography dose index (CTDIvol) to the patient dose (i.e. size-specific dose estimate (SSDE)) for various phantom diameters and tube voltages. Material and Methods: In-house cylindrical acrylic phantoms with physical diameter...

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