نتایج جستجو برای: ray tomography computer assisted diagnosis maximum permissible exposure level

تعداد نتایج: 2891736  

2011
Lei He L. Rodney Long Sameer Antani George R. Thoma

Histology is the study of the microscopic anatomy of cells and tissues of organisms. Histological analysis is performed by examining a thin slice (section) of tissue under a light (optical) or electron microscope (Jungueira & Carneiro, 2005, Kiernan, 2008, Ross et al., 2002, Mills, 2006). After a sequence of technical procedures for tissue preparation (i.e., fixation, dehydration, clearing, inf...

2016
Young Jae Kim Seung Hyun Lee Chang Min Park Kwang Gi Kim

OBJECTIVES This work was a comparative study that aimed to find a proper method for accurately segmenting persistent ground glass nodules (GGN) in thin-section computed tomography (CT) images after detecting them. METHODS To do this, we first applied five types of semi-automatic segmentation methods (i.e., level-set-based active contour model, localized region-based active contour model, seed...

2017
Bo Xu Mats Gustafsson Shuai Shi Kun Zhao Zhinong Ying Sailing He

In the millimeter-wave bands towards 5G, human exposure to radio frequency (RF) electromagnetic field (EMF) is evaluated in terms of free space power density, rather than specific absorption rate. Maximum power density emitted by 5G user equipment should not exceed the power density limits set by relevant regulatory guidelines. In this paper, we provide upper bounds of maximum power density of ...

Journal: :International Journal of Power Electronics and Drive Systems 2022

There has been a surge in biomedical imaging technologies with the recent advancement of deep learning. It is being used for diagnosis from X-ray, computed tomography (CT) scan, electrocardiogram (ECG), and electroencephalography (EEG) images. However, most them are solely particular disease detection. In this research, computer-aided learning model named COVID-CXDNetV2 presented to detect two ...

Since the quality of sperm is affected by water industrial or agriculture pollution, sperm motility was measured as a sensitive and accurate bioindicator of water quality. In this study, sperm motility was measured by a computer assisted sperm analysis after 24 hours exposure of sperm to different concentration of heavy metals) Cadmium and Zinc). The results show that the sperm motility was not...

F. Bouzarjomehri, V. Tsapaki

Introduction: Active personal dosimeters (APDs) are well accepted as useful and reliable instruments for individual dosimetry measurements. APDs have many advantages compared with passive dosimeters for individual external radiation dose assessments. In routine monitoring, occupational exposure is carried out for verification and demonstration of compliance with the regulatory dose limits. So, ...

Journal: :Canadian family physician Medecin de famille canadien 2006
J Douglas Hall Marshall Godwin Tessa Clarke

OBJECTIVE To assess levels of radiation exposure from diagnostic imaging among family practice patients, the degree to which these levels exceed recommended levels, and whether radiation exposure level is associated with a diagnosis of cancer. DESIGN Chart abstraction. SETTING Six practices in an academic family medicine centre and 1 family practice in the community. PARTICIPANTS Two hund...

Journal: :Istanbul university journal of pharmacy 2021

Background and Aims: The levels of cadmium (Cd) lead (Pb) were analyzed in frequently used herbs including ginger, liquorice, nutmeg turmeric Turkey. Materials Methods: Cd Pb commonly by inductively coupled plasma optical emission spectrometry after a closed microwave-assisted digestion. Results: concentration ranges for the found to be 0.25-0.78 mg/kg 3.04-6.45 mg/kg, respectively. While below...

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