M. Mohammed
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View article: Al-Qanuji's Position on the Divine Attributes that are Disputed Among Islamic Sects in His Book Al-Qa'id ila al-Aqa'id
Al-Qanuji's Position on the Divine Attributes that are Disputed Among Islamic Sects in His Book Al-Qa'id ila al-Aqa'id Open
The study of Divine Attributes holds a central position in Islamic creed, as it pertains to the highest knowledge of Allah, the One without partner and Lord of all worlds. Comprehending His Names and Attributes is fundamental to a believer…
View article: ADVERSE OUTCOMES OF ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY AT GASTROENTEROLOGY AND HEPATOLOGY CENTERS IN SULAYMANIYAH AND DUHOK CITY
ADVERSE OUTCOMES OF ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY AT GASTROENTEROLOGY AND HEPATOLOGY CENTERS IN SULAYMANIYAH AND DUHOK CITY Open
Background Endoscopic retrograde cholangiopancreatography (ERCP) has a significant and managing management of pancreaticobiliary diseases in Iraq and Kurdistan. Evaluating ERCP adverse outcomes is essential in raising the effectiveness and…
View article: HARVONI VERSUS 3D REGIMENS OUTCOMES AMONG HCV INFECTED PATIENTS VISITED KURDISTAN CENTRE FOR GASTROENTEROLOGY AND HEPATOLOGY (KCGH)
HARVONI VERSUS 3D REGIMENS OUTCOMES AMONG HCV INFECTED PATIENTS VISITED KURDISTAN CENTRE FOR GASTROENTEROLOGY AND HEPATOLOGY (KCGH) Open
Background Approximately 3% of the world’s population is infected by the Hepatitis C virus (HCV), and more than 2/3rd of patients have chronic hepatitis. The recent revolutions in HCV treatment have led the World Health Organization to tar…
View article: POLYP AND ADENOMA DETECTION RATE AND EVALUATION OF DIFFERENT POLYP RETRIEVAL METHODS IN PATIENTS UNDERGOING COLONOSCOPY IN KURDISTAN CENTER FOR GASTROENTEROLOGY AND HEPATOLOGY/SULAIMANI CITY (KCGH)
POLYP AND ADENOMA DETECTION RATE AND EVALUATION OF DIFFERENT POLYP RETRIEVAL METHODS IN PATIENTS UNDERGOING COLONOSCOPY IN KURDISTAN CENTER FOR GASTROENTEROLOGY AND HEPATOLOGY/SULAIMANI CITY (KCGH) Open
Background Colorectal carcinoma is a common malignancy in Sulaimani city. Thousands of colonoscopies are conducted yearly for screening and diagnosis of colorectal pathologies, especially colorectal polyps and colorectal carcinoma. High-qu…
View article: ROLE OF FECAL CALPROTECTIN IN DIFFERENTIATION OF INFLAMMATORY BOWEL DISEASES IN PATIENTS COMPLAINING OF ABDOMINAL SYMPTOMS AND REFERRED FOR COLONOSCOPY
ROLE OF FECAL CALPROTECTIN IN DIFFERENTIATION OF INFLAMMATORY BOWEL DISEASES IN PATIENTS COMPLAINING OF ABDOMINAL SYMPTOMS AND REFERRED FOR COLONOSCOPY Open
Background The difficulty in differentiating functional gastrointestinal disorders and inflammatory bowel diseases in patients presenting with abdominal symptoms direct us to the use of fecal inflammatory biomarkers that are specific to in…
View article: Testing CPT symmetry in ortho-positronium decays with positronium annihilation tomography
Testing CPT symmetry in ortho-positronium decays with positronium annihilation tomography Open
Charged lepton system symmetry under combined charge, parity, and time-reversal transformation (CPT) remains scarcely tested. Despite stringent quantum-electrodynamic limits, discrepancies in predictions for the electron–positron bound sta…
View article: Synchronization and Calibration of the 24-Modules J-PET Prototype With 300-mm Axial Field of View
Synchronization and Calibration of the 24-Modules J-PET Prototype With 300-mm Axial Field of View Open
Research conducted in the framework of the J-PET project aims to develop a\ncost-effective total-body positron emission tomography scanner. As a first step\non the way to construct a full-scale J-PET tomograph from long strips of\nplastic …
View article: First observation of ortho-positronium with the J-PET tomograph
First observation of ortho-positronium with the J-PET tomograph Open
The J-PET tomograph is constructed from plastic scintillator strips arranged axially in concentric cylindrical layers. It enables investigations of positronium decays by measurement of the time, position, polarization and energy deposited …
View article: First exclusive measurement of ortho-positronium with the J-PET tomograph
First exclusive measurement of ortho-positronium with the J-PET tomograph Open
The J-PET tomograph is constructed from plastic scintillator strips arranged axially in concentric cylindrical layers. It enables investigations of positronium decays by measurement of the time, position, polarization and energy deposited …
View article: Hit-Time and Hit-Position Reconstruction in Strips of Plastic Scintillators Using Multithreshold Readouts
Hit-Time and Hit-Position Reconstruction in Strips of Plastic Scintillators Using Multithreshold Readouts Open
In this article, a new method for the reconstruction of hit-position and hit-time of photons in long scintillator detectors is investigated. This article is motivated by the recent development of the positron emission tomography scanners b…
View article: Hit-time and hit-position reconstruction in strips of plastic scintillators using multi-threshold readouts
Hit-time and hit-position reconstruction in strips of plastic scintillators using multi-threshold readouts Open
In this article, a new method for the reconstruction of hit-position and hit-time of photons in long scintillator detectors is investigated. This research is motivated by the recent development of the positron emission tomography scanners …
View article: Estimating relationship between the Time Over Threshold and energy loss by photons in plastic scintillators used in the J-PET scanner
Estimating relationship between the Time Over Threshold and energy loss by photons in plastic scintillators used in the J-PET scanner Open
Time-Over-Threshold (TOT) technique is being used widely due to its implications in developing the multi channel readouts mainly when fast signal processing is required. Using TOT technique as a measure of energy loss instead of charge int…
View article: Performance assessment of the 2$γ$ positronium imaging with the total-body PET scanners
Performance assessment of the 2$γ$ positronium imaging with the total-body PET scanners Open
In living organisms the positron-electron annihilation (occurring during the PET imaging) proceeds in about 30% via creation of a metastable ortho-positronium atom. In the tissue, due to the pick-off and conversion processes, over 98% of o…
View article: Performance assessment of the 2$\gamma$ positronium imaging with the total-body PET scanners
Performance assessment of the 2$\gamma$ positronium imaging with the total-body PET scanners Open
Purpose In living organisms, the positron-electron annihilation (occurring during the PET imaging) proceeds in about 30% via creation of a metastable ortho-positronium atom. In the tissue, due to the pick-off and conversion processes, over…
View article: The tests of CP and CPT symmetry using the J-PET detector
The tests of CP and CPT symmetry using the J-PET detector Open
Symmetries under the parity transformation (P), charge-conjugation (C) and time reversal (T) are of fundamental importance in nuclear and elementary particle physics. Studies of the observables violating the combined CP symmetry constitute…
View article: Feasibility Study of the Time Reversal Symmetry Tests in Decay of Metastable Positronium Atoms with the J-PET Detector
Feasibility Study of the Time Reversal Symmetry Tests in Decay of Metastable Positronium Atoms with the J-PET Detector Open
This article reports on the feasibility of testing of the symmetry under reversal in time in a purely leptonic system constituted by positronium atoms using the J-PET detector. The present state of symmetry tests is discussed with an emph…
View article: Feasibility studies of the polarization of photons beyond the optical wavelength regime with the J-PET detector
Feasibility studies of the polarization of photons beyond the optical wavelength regime with the J-PET detector Open
J-PET is a detector optimized for registration of photons from the electron-positron annihilation via plastic scintillators where photons interact predominantly via Compton scattering. Registration of both primary and scattered photons ena…
View article: Evaluation of Single-Chip, Real-Time Tomographic Data Processing on FPGA SoC Devices
Evaluation of Single-Chip, Real-Time Tomographic Data Processing on FPGA SoC Devices Open
A novel approach to tomographic data processing has been developed and evaluated using the Jagiellonian positron emission tomography scanner as an example. We propose a system in which there is no need for powerful, local to the scanner pr…
View article: Feasibility study of the time reversal symmetry tests in decays of metastable positronium atoms with the J-PET detector
Feasibility study of the time reversal symmetry tests in decays of metastable positronium atoms with the J-PET detector Open
This article reports on the feasibility of testing of the symmetry under reversal in time in a purely leptonic system constituted by positronium atoms using the J-PET detector. The present state of T symmetry tests is discussed with an emp…
View article: Towards 2+1 photon tomography: Energy-based selection of two 511 keV photons and a prompt photon with the J-PET scanner
Towards 2+1 photon tomography: Energy-based selection of two 511 keV photons and a prompt photon with the J-PET scanner Open
The possibility to separate signals caused by 511 keV photons created in annihilation of electron-positron pairs and the so-called prompt photons from nuclei de- excitation is investigated. It could potentially be used to improve the quali…
View article: Studies of discrete symmetries in decays of positronium atoms
Studies of discrete symmetries in decays of positronium atoms Open
A positronium - a bound state of electron and positron - is an eigenstate of parity and charge conjugation operators which decays into photons. It is a unique laboratory to study discrete symmetries whose precision is limited, in principle…
View article: Novel scintillating material 2-(4-styrylphenyl)benzoxazole for the fully digital and MRI compatible J-PET tomograph based on plastic scintillators
Novel scintillating material 2-(4-styrylphenyl)benzoxazole for the fully digital and MRI compatible J-PET tomograph based on plastic scintillators Open
A novel plastic scintillator is developed for the application in the digital positron emission tomography (PET). The novelty of the concept lies in application of the 2-(4-styrylphenyl)benzoxazole as a wavelength shifter. The substance has…
View article: A Method to Produce Linearly Polarized Positrons and Positronium Atoms with the J-PET Detector
A Method to Produce Linearly Polarized Positrons and Positronium Atoms with the J-PET Detector Open
A method for creating linearly polarized positrons and ortho-positronium (o-Ps) atoms with the J-PET detector is presented.The unique geometry and properties of the J-PET tomography enable one to design a positron source such that the quan…