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 ...

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...

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...

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: The CT machine utilizes a bowtie filter to shape the X-ray beam and remove lower energy photons. Configuration of this bowtie filter is complex and its geometry is often not available in detail. It causes the CT dose index (CTDI) be with the different values in measurement versus Monte Carlo simulation studies and other analytical calculations. It is important esp...

In the radiological department, computed tomography (CT) scan process has become a greater radiation dosage that contributes to all medical X-ray treatments. Many studies throughout world have found CT accounts for just 5% of operations conducted yet 34% yearly exposures in Similarly, other 17% worldwide but 49% total doses Because diagnostic reference levels (DRLs) are one ways optimizing dose...