Iranian Journal of Medical Physics
مرور بر اساس
مجموعههای این پایگاه
ارسال های اخیر
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Planning Target Volume Margin Assessment Using Daily Cone Beam Computed Tomography Image Verification in Prostate Cancer Patients
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: Conformal radiation techniques are widely used in prostate cancer treatment as it improves the therapeutic ratio. However, inter- and intra-fraction variations remain challenging, which reflects on the planning ...
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Enhancing Fricke Xylenol Gel Dosimeter's Response to Radiation with Optimized Preparation Methods
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: The fundamental principle of the Fricke gel dosimeter involves the oxidation of ferric ions upon exposure to radiation. However, a significant limitation of this dosimeter is the post-irradiation diffusion ...
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Clinical Accuracy Analysis and Error Modeling in the CyberKnife System; A Comparative Study
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: This study conducted a clinical accuracy analysis of Synchrony Respiratory Tracking System across different CyberKnife generations (G3, G4, VSI, and M6) to provide comprehensive comparing across different ...
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Feasibility Study of Transit Dosimetry (TD) with an Electronic Portal Imaging Device (EPID) in volumetric arc therapy (VMAT) for head and neck cancer (HNC)
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: The progress in radiotherapy treatment modalities, such as Intensity Modulated Radiotherapy (IMRT) and Volumetric Arc Therapy (VMAT), introduces considerable complexity. Consequently, the precision of dose ...
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Comparison of Volumetric Modulated Arc Therapy and Intensity Modulated Radiotherapy with Brachytherapy for Carcinoma Cervix Boost
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: It is challenging to deliver brachytherapy for patients who refuse minor surgical insertion of applicators. As external beam radiation therapy(EBRT) can be delivered more precisely using advanced radiotherapy ...
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Assessment of Dosimetric Uncertainties in Liver Stereotactic Body Radiation Therapy using kilo-voltage Cone-Beam CT
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: Liver stereotactic body radiation therapy (SBRT) presents distinct challenges caused by respiratory and gastrointestinal motion. While deep inspiration breath hold (DIBH) reduces respiratory motion, ...
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Myocardial Iron Overload Assessment with Automatic Segmentation of Cardiac MR Images based on Deep Neural Networks
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: Heart failure due to myocardial iron overload is one of the main causes of death in thalassemia major (TM) patients. Therefore, cardiac magnetic resonance (CMR) imaging method with a multi-echo sequence can ...
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Evaluation of Left Ventricular Rotation Using Speckle Tracking Technique in Echocardiographic Images of Coronary Artery Stenosis Patients
(Mashhad University of Medical Sciences, 2025-02-01)Introduction: Computed Tomography (CT) is nowadays used widely to differentiate normal brain cranium sutures from abnormal ones in pediatric patients with the aim of early treatment. This study tried to develop a low-dose ...
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Influence of Normal Tissue Objective Tools on Treatment Planning System in Nasopharyngeal Carcinoma (NPC): A 3D Printed Anthropomorphic Phantom Study
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: The normal tissue objective (NTO), one of the new aspects in the radiation treatment planning system (TPS), aims to lower the absorbed dose received by organs at risk (OARs) close to the target volume or ...
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Continuous Visual Stimulation Is Associated With Reduced Occipital Brain Temperature Measured By Magnetic Resonance Spectroscopy Thermometry
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: There is paucity of information about the impact of different neuroactivation paradigms on brain temperature changes in functional magnetic resonance spectroscopy (fMRS) studies. Magnetic resonance spectroscopy ...
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Investigating Motion Data Selections Based on Patient-Specific Respiration Pattern at External Surrogates Radiotherapy Using Cyberknife Synchrony Respiratory Tracking System
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: : In order to personalize motion compensated radiotherapy with external surrogates, an intelligent method is proposed for selecting external surrogates' motion data on the basis of patient-specific respiration ...
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Determination of Radiation Shielding Features of Polyvinyl Alcohol/Magnetite-Bismuth Oxide Composite Using Precise Computational Methods and Monte Carlo Code
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: Bismuth efficiency in shielding superficial tissues in computed tomography (CT) scans has been challenged due to the imbalance between image quality and dose reduction. The aim of this study is to reduce ...
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Comparison between Two-Photon Treatment Planning Techniques 3D-Conformal Radiotherapy and the Volumetric Modulated Arc Therapy for Head and Neck Carcinoma
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: Achieving precise dose delivery in head and neck cancer is challenging, requiring effective tumor control while minimizing toxicity. This study compares Volumetric-Modulated Arc Therapy (VMAT) and 3D Conformal ...
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Radiation Absorbed Dose Evaluation of [177Lu] Lu-DOTMP Radiopharmaceutical in Man Based On Biodistribution Data in Wistar Rats
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: Bone metastasis is the advanced stage of solid malignant tumors. Bone-avid beta-emitting radiopharmaceuticals such as lutetium-177-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetramethylene phosphonic acid ...
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Comparison of Methods of µ-Map Generation: MR-Based Method in PET/MR Imaging Versus Pseudo-CT Method in Radiotherapy Dose Planning
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: Attenuation correction is essential for accurate PET imaging and radiotherapy (RT) dose planning. However, PET/MR systems face a significant challenge due to the lack of direct attenuation data from MR images, ...
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Deep Learning-Based Brain Tumor Segmentation in MRI Images: A MobileNetV2-DeepLabV3+ Approach
(Mashhad University of Medical Sciences, 2024-12-01)Introduction: Brain tumors (BTs) pose significant challenges in medical diagnosis and treatment due to their heterogeneity and complex characteristics. Accurate and precise segmentation of BTs in magnetic resonance images ...
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Assessment of Hearing Ability in Patients after Head and Neck Cancer Radiotherapy
(Mashhad University of Medical Sciences, 2024-10-01)Introduction: The study assesses radiation-induced sensorineural hearing loss (SNHL) in head and neck cancer patients, highlighting the common occurrence of SNHL as a significant side effect of radiation therapy (RT) ...
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Preliminary Study the Effect of Galbanic Acid on the Efficacy of Radiation Therapy on O26 Tumor Cells Implanted In Balb-C Mice
(Mashhad University of Medical Sciences, 2024-10-01)Introduction: In the present study we used Galbanic acid (GA) combined with radiation therapy to raise radiation efficacy. GA extracted from Ferula species and have anti-cancer properties. The purpose of this study is to ...
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The Measurement of Neutron Contamination in High Energy X-Ray Radiotherapy Using a He-3 Gas Dosimeter
(Mashhad University of Medical Sciences, 2024-10-01)Introduction: Neutron contamination is likely caused by the collision of high-energy photon interactions (γ, ṉ) with heavy metals used in the construction of the accelerator. This study is essential to quantify the ...
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Evaluation of 3D-CRT Radiotherapy Treatment Planning with Radiobiological Effects in Patient-Specific 3D Printed Anthropomorphic Phantom Postmastectomy Breast Cancer Axillary Metastases
(Mashhad University of Medical Sciences, 2024-10-01)Introduction: The aim of this study was to evaluate and measure the effectiveness of a particular radiotherapy treatment planning system, namely 3D conformal radiation therapy (3D-CRT), and radiobiological effects in ...



