Search Results - "Demirkaya, Omer"

Influence of cone beam CT (CBCT) scan parameters on size specific dose estimate (SSDE): a Monte Carlo study by Abuhaimed, Abdullah, Martin, Colin J, Demirkaya, Omer

“…The CT dose index (CTDI ) is the dosimetric quantity used for multi-slice CT (MSCT) with beams  ⩽4 cm. Conversion factors (f  ) based on patient size are…”
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Saudi National diagnostic reference levels (NDRLs) by Alaboudi, Nasser, Almutairi, Abdulrahman, Almosabahi, Abdulaziz, Aldosari, Abdullah, Albahiti, Sarah, Alkadhi, Yusuf, Moftah, Belal, Alsugair, Abdulaziz, Alshabanah, Mohammed, Demirkaya, Omer, Almesned, Ali, Aldalaan, Ali

“…Saudi Food and Drug Authority (SFDA) has led the first governmental initiative to establish Saudi National Diagnostic Reference Levels (NDRLs) for various…”
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[OA212] A Monte Carlo investigation of dose width product (DWP) as a dose index for CBCT dosimetry by Abuhaimed, Abdullah, Martin, Colin, Demirkaya, Omer

“…Dose-length-product (DLP) plays a vital role in assessing the total energy delivered to patients from CT scans. Moreover, DLP along with conversion…”
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[OA215] Impact of tube potential and beam width of CBCT scans on size-specific dose estimate (SSDE) factors by Abuhaimed, Abdullah, Martin, Colin, Demirkaya, Omer

“…Investigate the influence of tube potential and beam width of CBCT scans on the correction factors (fsize) used to assess size-specific dose estimate (SSDE). A…”
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Analysis of metastatic involvement in bone using anatomical and functional information from 18F-FDG PET/CT by Demirkaya, Omer, AlQahtani, Mohammed, Alsugair, Abdulaziz, Aras, Omer, Abouzied, Mohei-Eldin

“…PURPOSEAlthough the overall incidence of bone metastasis is not known, over one-half of the people who die of cancer in the USA every year are thought to have…”
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Anisotropic diffusion filtering of PET attenuation data to improve emission images by Demirkaya, Omer

“…Attenuation correction in positron emission tomography (PET) is an essential part of clinical and research studies. However, correction using noisy…”
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Post-reconstruction filtering of positron emission tomography whole-body emission images and attenuation maps using nonlinear diffusion filtering by Demirkaya, Omer

“…Positron emission tomography has been playing an important role as a quantitative molecular imaging modality to measure and image biochemical processes in…”
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Three-dimensional imaging of vasculature and parenchyma in intact rodent organs with X-ray micro-CT by Jorgensen, S M, Demirkaya, O, Ritman, E L

“…A microcomputed tomography (micro-CT) scanner, which generates three-dimensional (3-D) images consisting of up to a billion cubic voxels, each 5-25 micron on a…”
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Segmentation of cDNA Microarray Spots Using Markov Random Field Modeling by Demirkaya, Omer, Asyali, Musa H., Shoukri, Mohamed M.

“…Motivation: Spot segmentation is a critical step in microarray gene expression data analysis. Therefore, the performance of segmentation may substantially…”
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Performance Test Data Analysis of Scintillation Cameras by Demirkaya, O., Al Mazrou, R.

“…In this paper, we present a set of image analysis tools to calculate the performance parameters of gamma camera systems from test data acquired according to…”
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Cloning-free regulated monitoring of reporter and gene expression by al-Haj, Latifa, Al-Ahmadi, Wijdan, Al-Saif, Maher, Demirkaya, Omer, Khabar, Khalid S A

“…The majority of the promoters, their regulatory elements, and their variations in the human genome remain unknown. Reporter gene technology for transcriptional…”
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Assessment of reliability of microarray data and estimation of signal thresholds using mixture modeling by Asyali, Musa H., Shoukri, Mohamed M., Demirkaya, Omer, Khabar, Khalid S. A.

“…DNA microarray is an important tool for the study of gene activities but the resultant data consisting of thousands of points are error‐prone. A serious…”
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Determination of image bimodality thresholds for different intensity distributions by Demirkaya, Omer, H. Asyali, Musa

“…Between-class variance has been first proposed as a criterion function to determine an optimal threshold to segment images into nearly homogenous regions. This…”
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Role of [18F]fluorodeoxyglucose positron emission tomography in follow-up of differentiated thyroid cancer by Alzahrani, Ali S, Mohamed, Gamal E, Al Rifai, Ayman, Al-Sugair, Abdulaziz, Abdel Salam, Suzan A, Sulaiman, Othman M, Demirkaya, Omer

“…To assess the diagnostic utility of [(18)F]flu-orodeoxyglucose positron emission tomography (FDG PET) in the follow-up of patients with differentiated thyroid…”
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Automated quantitative cellular analysis of immunohistochemically stained tissue sections by Demirkaya, Omer

“…An image analysis system for histochemically and immunohistochemically stained cells in histological tissue sections was developed. Image processing techniques…”
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118-P by Demirkaya, Omer, Tbakhi, Abdelghani, Al-Sagheer, Mohammed, Hmawi, Khaled, Al-Meshari, Khalid, Al-Dayel, Fouad, Raef, Hussein, Al-Nuaim, Abdulrahman, Al-Kaff, Morad, Abdulla, Ismail

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118-P: Quantification of islet cell equivalents using automated color image analysis techniques by Demirkaya, Omer, Tbakhi, Abdelghani, Al-Sagheer, Mohammed, Hmawi, Khaled, Al-Meshari, Khalid, Al-Dayel, Fouad, Raef, Hussein, Al-Nuaim, Abdulrahman, Al-Kaff, Morad, Abdulla, Ismail

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Automated quantitative cellular analysis of immunohistochemically stained tissue sections by Demirkaya, Omer

“…An image analysis system for histochemically and immunohistochemically stained cells in histological tissue sections was developed. Image processing techniques…”
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Paletli Zırhlı Bir Askeri Araçta Gövde Üzerine Monte Edilmiş Mekanik Bir Elemanın Titreşim Kaynaklı Yorulma Hasarının Sonlu Elemanlar Yöntemi Ile Analizi by Demirkaya, Ömer Faruk

“…Yaygın bir kara savunma sistemi olan paletli zırhlı araçlar paletin yol ile ilişkisi nedeni ile titreşime maruz kalmakta ve bu titreşim neticesinde aracın…”
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Automated identification of stained cells in tissue sections using digital image analysis by Demirkaya, O, Cothren, R M, Vince, D G, Cornhill, J F

“…To develop a novel automated image analysis system to differentiate immunohistochemically stained cells from background. Cell segmentation was performed by…”
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