Search Results - "Rezvan Ravanfar Haghighi"

Evaluation of Ultra-Low-Dose Chest Computed Tomography Images in Detecting Lung Lesions Related to COVID-19: A Prospective Study by Zarei, Fariba, Jalli, Reza, Chatterjee, Sabyasachi, Haghighi, Rezvan Ravanfar, Iranpour, Pooya, Chatterjee, Vani Vardhan, Emadi, PhD; Sedigheh

“…Background: The present study aimed to evaluate the effectiveness of ultra-low-dose (ULD) chest computed tomography (CT) in comparison with the routine dose…”
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Determination of Diagnostic Reference Level (DRL) in Common Computed Tomography Examinations with the Modified Quality Control-Based Dose Survey Method in Four University Centers: A Comparison of Methods by Tabesh, Jalal, Mahdavi, Maziyar, Haddadi, Gholamhasan, Ravanfar Haghighi, Rezvan, Jalli, Reza

“…The diagnostic reference level (DRL) is measured with different methods in the common Computed tomography (CT) exams, but it has not been measured through the…”
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Liver Fibrosis Assessment Using Transient Elastography by FibroScan and Shear Wave Elastography by Sonography: A Comparative Cross-sectional Study in an Outpatient Liver Clinic by Zarei, Fariba, Moini, Maryam, Abedi, Mahsa, Ravanfar Haghighi, Rezvan, Zeinali-Rafsanjani, Banafsheh

“…Background: Non-alcoholic fatty liver disease (NAFLD) is the second most common cause of liver transplantation in the United States, with a continuously…”
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Quantitative analysis of lung lesions using unenhanced chest computed tomography images by Zarei, Fariba, Jannatdoust, Payam, Malekpour, Siamak, Razaghi, Mahshad, Chatterjee, Sabyasachi, Varadhan Chatterjee, Vani, Abbasi, Amirbahador, Haghighi, Rezvan Ravanfar

“…Introduction Chest radiograph and computed tomography (CT) scans can accidentally reveal pulmonary nodules. Malignant and benign pulmonary nodules can be…”
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Composite Iodine-gold Nanoparticles as a Contrast Agent in Computed Tomography by Haghighi, Rezvan Ravanfar, Zarei, Fariba, Moshiri, Samira, Jafari, Anahita, Chatterjee, Sabyasachi, Akondi, Vyas, Chatterjee, Vani Vardhan

“…Purpose: Solutions of iodine-based compounds, due to their high X-ray attenuation coefficient, are widely used as contrast agents in computed tomography (CT)…”
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DECT evaluation of noncalcified coronary artery plaque by Ravanfar Haghighi, Rezvan, Chatterjee, S., Tabin, Milo, Sharma, Sanjiv, Jagia, Priya, Ray, Ruma, Singh, Rishi P., Yadav, Rakesh, Sharma, Munish, Krishna, Karthik, Vani, V. C., Lakshmi, R., Mandal, Susama R., Kumar, Pratik, Arava, Sudhir

“…Purpose: Composition of the coronary artery plaque is known to have critical role in heart attack. While calcified plaque can easily be diagnosed by…”
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Evaluation of Ultra-Low-Dose Chest CT Images to Detect Lung Lesions by Reza Jalli, Fariba Zarei, Sabyasachi Chatterjee, Rezvan Ravanfar Haghighi, Alireza Novshadi, Pooya Iranpour, Sepideh Sefidbakht, Vani Vardhan Chatterjee

“…Background: The present study was conducted to examine the possibility of detecting different types of lung lesions, such as cancer, using ultra-low dose (ULD)…”
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Design and Construction of an Affordable Phantom for Electron Density Measurement and Linearity Tests of Computed Tomography Systems by Rezvan Ravanfar Haghighi, Sabysachi Chatterjee, Sepideh Sefidbakht, Reza Jalli, Vani Vardhan Chatterjee

“…Introduction: The performance of computed tomography is routinely checked using phantoms, which are known as important diagnostic imaging tools. Depending upon…”
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Denoising Effect on T2 Values in Magnetic Resonance Imaging with Application in Iron Load of Patients with Thalassaemia Major by Dodangeh, Mahdi, Gholami Bardeji, Somayeh, Gholami, Zeinab, Jalli, Reza, Ravanfar Haghighi, Rezvan, Sefidbakht, Sepideh

“…Objectives: To investigate the effect of noise and denoising on the measurement of magnetic resonance (MR) imaging T2* values at interventricular septum of the…”
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Non-Calcified Coronary Artery Plaque Characterization by Dual Energy Computed Tomography (DECT) by Ravanfar Haghighi, Rezvan, Sachi Chatterjee, Sabya, Kumar, Pratik, Varadhan Chatterjee, Vani, Jalli, Reza, Sefidbakht, Sepideh, Zarei, Fariba, Bijan, Bijan

“…Background: One of the most important causes of mortality in developed and developing countries is coronary artery disease. Coronary artery disease (CAD) may…”
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Non-Calcified Coronary Artery Plaque Characterization by Dual-Energy Computed Tomography by Ravanfar Haghighi, Rezvan, Chatterjee, Sabyasachi, Vani, Vardahan.C., Kumar, Pratik, Tabin, Milo, Ray, Ruma, Jalli, Reza, Sefidbakht, Sepide, Zarei, Fariba, Shakibafard, Ali Reza, Gholami Bardeji, Somayeh, Dodangeh, Mahdi, Bijan, Bijan

“…Background: Inversion of dual-energy computed tomography (DECT) data for obtaining the electron density and effective atomic number of substances has been a…”
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Aspiration Pneumonia or COVID-19 Infection: A Diagnostic Challenge by Zarei, Fariba, Reza, Jalli, Sefidbakht, Sepideh, Iranpour, Pooya, Haghighi, Rezvan Ravanfar

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Dependence of the effective mass attenuation coefficient of gold nanoparticles on its radius by Haghighi, Rezvan Ravanfar, Chatterjee, Sabyasachi, Chatterjee, Vani Vardhan, Hosseinipanah, Sedigheh, Tadrisinik, Fariba

“…•Fundamental physics shows X-ray attenuation of gold nanoparticles to be size independent.•In designing X-ray contrast agents, the size of gold nanoparticles…”
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Evaluation of the confounding factors disturbing the quality of CT images of pulmonary angiography by Pooya Iranpour, Azadeh Sharifzadeh Yazdi, Rezvan Ravanfar Haghighi, Mahdi Saeedi-Moghadam

“…Background: Since pulmonary angiography is the only non-invasive method for diagnosing pulmonary embolism, the use of radiation reduction methods without…”
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Pegylated Deoxycholic Acid Coated Gold Nanoparticles as a Highly Stable CT Contrast Agent by Mohajeri, Mohammad, Iranpour, Pooya, Vahidi, Yasmin, Haghighi, Rezvan Ravanfar, Faghih, Zahra, Bararjanian, Morteza, Salehi, Peyman

“…The present study has been dedicated to the synthesis of a new and highly stable computed tomography contrast agent based on pegylated deoxycholic acid‐ coated…”
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X-ray attenuation coefficient of mixtures: Inputs for dual-energy CT by Haghighi, Rezvan Ravanfar, Chatterjee, S., Vyas, Akondi, Kumar, Pratik, Thulkar, Sanjay

“…Purpose: The attenuation coefficient,μ(E) of substances, at any energy (E) of the x-ray photon, is known to depend on the electron density (ρe ) and the…”
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Non-invasive characterization of coronary artery atherosclerotic plaque using dual energy CT: Explanation in ex-vivo samples by Mandal, Susama Rani, Bharati, Avinav, Haghighi, Rezvan Ravanfar, Arava, Sudhir, Ray, Ruma, Jagia, Priya, Sharma, Sanjiv, Chatterjee, Sabyasachi, Tabin, Millo, Sharma, Munish, Sharma, Sanjay, Kumar, Pratik

“…•This paper uses material (plaque) specific and machine independent parameters.•Result of DECT was compared with pathology to assess their differentiating…”
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Clinical, Laboratory, and Chest CT Features of Dead versus Recovered Coronavirus Disease 2019 (COVID-19) Patients: A Multicenter Study by Fariba Zarei, Reza Jahankhah, Nourallah Najafi, Rezvan Ravanfar, Maryam Rezaee, Soroor Raiskarimi, Sahar Soltanabadi, Hamid Aria

“…Background: The current study was carried out to analyze the clinical, laboratory, and computed tomography (CT) findings obtained from both groups of patients,…”
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X-ray attenuation coefficient of mixtures: Inputs for dual-energy CT: X-ray attenuation of mixtures by Haghighi, Rezvan Ravanfar, Chatterjee, S., Vyas, Akondi, Kumar, Pratik, Thulkar, Sanjay

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Numerical Analysis of the Relationship between the Photoelectric Effect and Energy of the X-Ray Photons in CT by Rezvan Ravanfar-Haghighi, Sabyasachi Chatterjee, Pratik Kumar, Vani Varadhan Chatterjee

“…Purpose: Attenuation of x-rays in any object is a combined effect of scattering and absorption of x-ray photons by the atoms in the material. While the…”
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