نتایج جستجو برای: radiographic image enhancement

تعداد نتایج: 520092  

Journal: :iranian endodontic journal 0
roza haghgoo department of pedodontics, dental school, shahed university of medical sciences, tehran, iran farid abbasi department of oral medicine, dental school, shahed university of medical sciences, tehran, iran.

introduction: pulpotomy of carious primary teeth with an exposed pulp is a common treatment option. pulpotomy has been conducted with various medicaments over the years. the aim of this study was to evaluate clinical and radiographic success of primary vital pulpotomy with proroot and root mta. materials and methods: in this randomized clinical trial, children aged between 3-7 years who met the...

Journal: :iranian journal of medical physics 0
abolfazl lakdashti ph.d. student of computer engineering, islamic azad university, research and science branch, tehran, iran mohammad shahram moin assistant professor and director of multimedia research group, it faculty, iran telecom research center, tehran, iran kambiz badie associate professor and director of it faculty, iran telecom research center, tehran, iran

introduction: content based image retrieval (cbir) is a method of image searching and retrieval in a  database. in medical applications, cbir is a tool used by physicians to compare the previous and current  medical images associated with patients pathological conditions. as the volume of pictorial information  stored in medical image databases is in progress, efficient image indexing and retri...

2007

The prime purpose of this project was to develop and evaluate a method to digitally alter the dynamic range of digital radiographic images. This digital manipulation of the dynamic range can achieve alteration of the displayed contrast and brightness of the digital radiographic image, based on the underlying anatomy within the image. So-called anatomically shaped radiographic contrast-enhanceme...

2017
Lamia Alam Pranab Kumar Dhar Mirza A. F. M. Rashidul Hasan Mohammed Golam Sarwar Golam Moktader Daiyan

1Department of Computer Science and Engineering, Chittagong University of Engineering and Technology (CUET), Chittagong-4349, Bangladesh 2Department of Information and Communication Engineering, University of Rajshahi, Rajshahi, Bangladesh 3Department of Computer Science and Engineering, Model Institute of Science and Technology, Bangladesh 4Department of Computer Science and Engineering, East ...

2012
K. STOEV

Several different image processing methods are described and discussed. Their applicability to the processing of images from digital radiography equipment is compared. The overall conclusion is that advanced image enhancement methods are beneficial and can improve detectability of flaws in digital radiography images, but that these enhancement methods have to be used carefully, especially in ca...

2016
Alaknanda Ashok

It is necessary to detect suspected defect regions in the radiographic weld images to find the flaw and its causative factors. This requires processing of radiographic images by a suitable approach This paper presents an image processing approach to process incomplete penetration type flaws in radiographic images of the weld specimens considering morphological aspects of the image. In the prese...

Introduction: Phantom studies facilitate the implementation of radiation dose surveillance as a function of radiographic technical parameters for minimizing patient radiation dose. The evidence of such investigations can then be used to evaluate technical parameters used in the radiographic procedures to reduce radiation dose without compromising the image quality. Material and Methods: This ex...

Journal: :journal of dentistry, tehran university of medical sciences 0
seyed jalal pourhashemi zahra ghoncheh mohammad taghi kiani raheleh emami mohamad javad kharazifard

objectives: this study aimed to compare the diagnostic accuracy of inverted and unprocessed digitized periapical radiographs for detection of peri-implant defects. materials and methods: a total of 30 osteotomy sites were prepared in three groups of control, study group 1 with 0.425 mm defects and study group 2 with 0.725 mm defects using the sic and astra tech drill systems with 4.25mm and 4.8...

Journal: :iranian journal of cancer prevention 0
mostafa langarizadeh faculty of medicine and health science, university putra malaysia, malaysia r mahmud faculty of medicine and health science, university putra malaysia, malaysia ar ramli faculty of engineering, university putra malaysia, malaysia s napis information and communication development center, university putra malaysia, malaysia mr beikzadeh malaysian institute of microelectronic systems, malaysia wez wan abdul rahman faculty of mathematics and quantitative research, university technology mara, malaysia

background: breast cancer is one of the most important diseases in females. malaysian women have not excluded. according to the malaysian oncology society [1], about 4% of women (who are 40 years old and above) have involved by breast cancer. masses and microcalcifications are two important signs for breast cancer diagnosis on mammography. according to our estimation, radiologists could diagnos...

2017
M. H. Jacoby

Digital image processing techniques can improve the interpretation and evaluation of radiographic and acoustic image data as well as the time domain waveforms produced by ultrasonic, eddy current, and acoustic emission in two important ways. First, the image or waveform being evaluated can be enhanced to bring out detail not readily apparent to the observer. Second, the properly enhanced image ...

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