A5091105252- Medical Imaging Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Lung Cancer Diagnosis and Treatment
- Diagnosis and treatment of tuberculosis
- Tuberculosis Research and Epidemiology
- Infectious Diseases and Tuberculosis
- Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
- COVID-19 diagnosis using AI
- Medical Imaging and Pathology Studies
- Pleural and Pulmonary Diseases
- Advanced X-ray and CT Imaging
- Radiation Dose and Imaging
- COVID-19 Clinical Research Studies
- Tracheal and airway disorders
- Hematological disorders and diagnostics
- Occupational and environmental lung diseases
- Respiratory viral infections research
- Mycobacterium research and diagnosis
- Cancer Diagnosis and Treatment
- Radiopharmaceutical Chemistry and Applications
- Olfactory and Sensory Function Studies
- Pulmonary Hypertension Research and Treatments
- Immunodeficiency and Autoimmune Disorders
- Long-Term Effects of COVID-19
- Sarcoma Diagnosis and Treatment
Masih Daneshvari Hospital
2016-2025
Shahid Beheshti University of Medical Sciences
2016-2025
Ziauddin University
2025
American University of Beirut Medical Center
2024
Groupe de Physique des Matériaux
2023
Shahid Beheshti University
2009-2021
Hôtel-Dieu de France
2013
Albany Medical Center Hospital
2003
Active Medicine (United Kingdom)
2003
Pan African Tsetse and Trypanosomiasis Eradication Campaign
1988-1990
The development of medical assisting tools based on artificial intelligence advances is essential in the global fight against COVID-19 outbreak and future systems. In this study, we introduce ai-corona , a radiologist-assistant deep learning framework for infection diagnosis using chest CT scans. Our incorporates an EfficientNetB3-based feature extractor. We employed three datasets; CC-CCII set, MasihDaneshvari Hospital (MDH) cohort, MosMedData cohort. Overall, these datasets constitute 7184...
Radionuclide ventriculography was performed in 15 healthy subjects during quiet breathing and inspiration against a 24 cm H2O threshold load with respiratory gating technique. Inspiratory loading caused an inspiratory decrease ejection fraction from 64% to 59% (p less than .001). Stroke counts proportional stroke volume decreased by 9.6% .02) due increase end-systolic of 15.9% .05). End-diastolic four increased three subjects, but the mean did not change significantly. These findings suggest...
Primary major airway tumors are rare. A retrospective analysis of referral centers experience could be helpful for their management.Fifty-one patients, including 44 (86%) malignant and seven (14%) benign with primary subglottis, trachea, carina, main stem bronchi, were managed in a 14-year period. Based on computed tomography (CT) scan rigid bronchoscopy findings, those who evaluated as resectable underwent resection reconstruction. The others by one or combination these methods: core out,...
Radioiodine ablation of thyroid tissue after subtotal thyroidectomy has been shown to decrease recurrence in certain subsets patients with well-differentiated cancer. In a substantial percentage cases (20-30%), initial the remnant fails, necessitating second treatment. The factors associated failure are not fully understood. particular, it is whether use doses higher than 3.70 GBq would result any additional benefit, or there 'stunning' effect diagnostic dose 131I on subsequent rate. A...
Dear Editor, Olfactory dysfunction is a well-known complication of coronavirus disease-2019 (COVID-19) and includes quantitative (hyposmia or anosmia) qualitative (parosmia phantosmia) olfactory dysfunction. Parosmia defined as alteration perception in the presence real stimulation. Patients with parosmia often describe perceiving smell something that burned, foul rotten (1Bitter T Siegert F Gudziol H et al.Gray matter alterations parosmia.Neuroscience. 2011; 177:...
Propose of the Report: Considering favorable characteristic 68 Ga FAPI-PET/CT, this study is aimed to compare findings FAPI versus 18 F FDG-PET/CT for evaluation patients with newly diagnosed non–small cell lung cancer (NSCLC). Patients and Methods: Fourteen pathology-proven NSCLC were enrolled in study. The primary metastatic lesions FAPI-PET/CT images compared one by based on standardized uptake value (SUV)max calculation, tumor-to-background ratio (TBR), visual assessment. Results: There...
e16197 Background: Intrahepatic cholangiocarcinoma (ICC) is the second most common primary liver malignancy, recognized for its uncommon yet highly aggressive nature. In United States, incidence of ICC has been steadily rising, with a projected rise up to 99% expected by 2029. Correspondingly, overall mortality increasing in States over past two decades ICC. The 5-year survival rate remains very low at 9%, cases rising globally. Objective: This 21-year retrospective analysis aims study...
Purpose: This study aimed to investigate the impact of image preprocessing steps, including Gray Level Discretization (GLD) and different Interpolation Algorithms (IA) on 18F-Fluorodeoxyglucose (18F-FDG) radiomics features in Non-Small Cell Lung Cancer (NSCLC). Materials Methods: One hundred seventy-two from first-, second-, higher-order statistic were calculated a set Positron Emission Tomography/Computed Tomography (PET/CT) images 20 non-small cell lung cancer delineated tumors with...
Clinical, laboratory and imaging findings in patients with multidrug resistant-tuberculosis (MDR-TB) non-tuberculosis mycobacterium (NTM) are similar, the majority of these present positive smear for Acid Fast Bacilli (ADB) no response to first line anti-TB treatment, so sputum culture PCR necessary, especially NTM.In this study we evaluate more details help earlier diagnosis pathogens.66 AFB drugs were divided into two groups by culture: MDR-TB (43 patients) NTM (23 patients). Age, sex,...
In physical examination abdominal tenderness, gate disturbance and penile herpetic lesions were detected. Decreased disc height at T11-T12 level was detected in chest X-ray. Abdominal sonography CT scan revealed hypo dense Lt left Lobe of liver multiple splenic pancreatic lesions, ascitis, sided pleural effusion, thickening jejuneal mucosa edema bowel wall. Vertebral body lesion paravertebral abscess, bony calvarial involvement adjacent extra axial brain observed imaging other findings. RNA...
A 19-year-old man presented with a 5-year history of back pain radiating to the lower extremities and paresthesis toes during last year. Plain X-ray revealed large cauliflower shaped exophytic mass at level T8, T9 T10 vertebrae. Computed tomography (CT) magnetic resonance imaging (MRI) showed an abnormal bony arising from posterior arch protrusion spinal canal marked cord compression. The cortex medulla lesion had continuity those vertebra. Surgical en bloc resection was performed patient's...
The aim of this study was to evaluate the relationship between maximum standardized uptake value (SUVmax) with tumor size and pathological characteristics as well suggesting equations SUVmax in patients nonsmall cell lung cancer (NSCLC) help differentiate pathology types. We retrospectively analyzed fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) findings 98 NSCLC. Statistical differences were considered significant when P < .05. Correlation other variables...
Rationale and ObjectivesReal-time polymerase chain reaction (RT-PCR) remains the gold standard for confirmation of Coronavirus Disease 2019 (COVID-19) despite having many disadvantages. Here, we investigated diagnostic performance chest computed tomography (CT) as an alternative to RT-PCR in patients with clinical suspicion COVID-19 infection.MethodsIn this descriptive cross-sectional study, 27,824 infection who underwent unenhanced low-dose CT from 20 February, 2020 21 May, were evaluated....
Background: Chest computed tomography (CT) scan has been used widely to diagnose COVID-19 in Iran. Objectives: To trace the footsteps of Iran by exploring trend using chest CT scans and its economic impact on radiology departments. Methods: In this cross-sectional study, number imaging examinations from 33 tertiary departments 9 large cities was collected September 23, 2019 March 20, 2020 (Months 1 6) corresponding months 2018–2019. Results: A 50.2% increase noted utilization 2019–2020...
Radiolabeled fibroblast activation protein inhibitors (FAPIs) have been extensively used in different types of cancers, although not yet FDA approved. Normal patterns FAPI biodistribution investigated, and it is known that expressed nonmalignant pathophysiological lesions, characterized by tissue remodeling such as atherosclerosis, arthritis, scar/fibrotic tissues. In this interesting image, we are presenting the accumulation 68Ga-FAPI gallbladder. This finding could be related to a normal...
Malignant pleural mesothelioma (MPM) is a rare malignant neoplasm of the pleura that typically affects individuals occupationally exposed to asbestos through variety industries. MPM presents with several CT features similar more common diseases such as metastatic malignancy.The aim this study differentiate from carcinoma by pathological and radiological assessment in order investigate accuracy scan regard compare these two malignancies.Chest scans 55 malignancy patients including were...