A5051631190- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Digital Radiography and Breast Imaging
- Medical Imaging Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Radioactivity and Radon Measurements
- Advanced Radiotherapy Techniques
- Radiopharmaceutical Chemistry and Applications
- Nuclear and radioactivity studies
- Nuclear Physics and Applications
- Radiology practices and education
- Cardiac Imaging and Diagnostics
- Functional Brain Connectivity Studies
- Radiation Detection and Scintillator Technologies
- Neuroendocrine Tumor Research Advances
- Dental Radiography and Imaging
- Advanced Neuroimaging Techniques and Applications
- Neural dynamics and brain function
- Radiation Therapy and Dosimetry
- MRI in cancer diagnosis
- Graphite, nuclear technology, radiation studies
- Parkinson's Disease Mechanisms and Treatments
- Radiation Effects and Dosimetry
- Advanced biosensing and bioanalysis techniques
- Lung Cancer Diagnosis and Treatment
Shahid Beheshti University of Medical Sciences
2016-2025
Pakistan Nuclear Regulatory Authority
2011
Radiation Protection Institute
2011
Atomic Energy Organization of Iran
2011
Nuclear Science and Technology Research Institute
2011
Islamic Azad University, Tehran
2011
Tehran University of Medical Sciences
2011
Tarbiat Modares University
2010
Robust differentiation between infarcted and normal tissue is important for clinical diagnosis precision medicine. The aim of this work to investigate the radiomic features develop a machine learning algorithm myocardial infarction (MI) viable tissues/normal cases in left ventricular myocardium on non-contrast Cine Cardiac Magnetic Resonance (Cine-CMR) images.Seventy-two patients (52 with MI 20 healthy control patients) were enrolled study. MR imaging was performed 1.5 T MRI using following...
We developed multi-modality radiomic models by integrating information extracted from18F-FDG PET and CT images using feature- image-level fusions, toward improved prognosis for non-small cell lung carcinoma (NSCLC) patients. Two independent cohorts of NSCLC patients from two institutions (87 95 patients) were cycled as training testing datasets. Fusion approaches applied at levels, namely image-levels. For feature-level fusion, features individually concatenated. Alternatively, separately...
AimsDespite the promising results achieved by radiomics prognostic models for various clinical applications, multiple challenges still need to be addressed. The two main limitations of include information limitation owing single imaging modalities and selection optimum machine learning feature methods considered modality outcome. In this work, we applied several single-modality positron emission tomography (PET) computed (CT) multimodality PET/CT fusion identify best combinations different...
Purpose: Peptide Receptor Radionuclide Therapy (PRRT) with 177Lu-DOTATATE (177 Lu DOTA-TATE therapy is a form of PRRT which targets Somatostatin Receptors (SSR). It targeted drug delivery, applicable to treat neuroendocrine tumors. applications are continuously expanding in most departments nuclear medicine Iran, but the best all, no one has studied mean doses organs patients. This research aims specify absorbed dose patients for treatment tumors using imaging 177Lu-[DOTA0-Tyr3] octerotate....
Purpose: The quality of the image in SPECT scans depends on imaging parameters which are determined experimentally field nuclear medicine. Designing a dedicated scanning parameter for 177Lu-DOTATATE images is required to optimize reconstruction. Therefore, this study aims evaluate effect different filters bone using 177Lu-DOTATATE. Materials and Methods: filtered back-projection reconstruction method was used neuro-endocrine tumor Three hours after injection 177Lu-DOTATATE, from 30 patients...
Development of Parkinson's disease causes functional impairment in the brain network patients. The aim this study is to analyze networks people with based on higher resolution parcellations and newer graphical features. topological features were investigated patients (19 individuals) compared healthy individuals (17 using graph theory. In addition, four different methods used formation detect linear nonlinear relationships between magnetic resonance imaging (fMRI) signals. connectivity left...
Electrocardiogram (ECG) is defined as an electrical signal, which represents cardiac activity. Heart rate variability (HRV) the variation of interval between two consecutive heartbeats balance sympathetic and parasympathetic branches autonomic nervous system.In this study, we aimed to evaluate efficiency discrete wavelet transform (DWT) based features extracted from HRV were further selected by genetic algorithm (GA), deployed support vector machine classification.In paper, 53 ECGs including...
In this study, we want to evaluate the response Lutetium-177 (
Acute lymphoblastic leukemia (ALL) is the most popular form of white blood cells cancer in children.It classified into three forms L1, L2 and L3.Typically, it identified through screening smearsvia pathologists.Since this laborious tedious, automatic systems are desired for suitable detection; but high similarity between morphology ALL that normal, reactive a typical lymphocytes, makes detection challenging problem.This study tried to improve accuracy based on principle component analysis...
In recent years, with the introduction of 64-slice CT and dual-source technology, coronary angiography (CCTA) has emerged as a useful diagnostic imaging modality non-invasive assessment heart disease. produces larger radiation dose than other tests cardiac involves higher advances in spatial temporal resolution. The aims this study are patient establishment national reference level for CCTA Iran. A questionnaire was sent to centers. Data protocols were obtained. volumetric index (CTDIvol),...
Abstract Background: Ionizing radiation has an indispensable role in diagnostic radiology and clinical treatments. Apparently, medical exposure pertains to be the preeminent man-made source of radiation. Objective: The aim present scientific study is calculate Entrance Surface Dose (ESD) Effective (ED) digital radiography Mazandaran province. Materials methods: was performed on 3600 patients X-ray rooms 15 hospitals required data were collected from two age groups (10>15 years adults)...
The major means of exposure to man-made sources radiation is due diagnostic examinations with X-ray. In the current research, for making practical programs reducing patient’s absorbed dose and increasing quality radiographic images in Sistan Baluchestan hospitals, patients surface image were evaluated. first stage experiment, cause low was evaluated a period one month, patient 10 adults 7 projection calculated this study. Then control tests conducted determine equipment failures provide...