PurposeTo establish the early prediction models of radiation-induced oral mucositis (RIOM) based on baseline CT-based radiomic features (RFs), dosimetric data, and clinical by machine learning for head neck cancer (HNC) patients.MethodsIn this single-center prospective study, 49 HNCs treated with curative intensity modulated radiotherapy (IMRT) were enrolled. Baseline CT images (i.e., simulation), dosimetric, collected. RIOM was assessed using CTCAE v.5.0. RFs extracted from...

The critical aspect of successful brachytherapy (BT) is accurate detection applicator/needle trajectories, which an ongoing challenge. This study proposes a two-phase deep learning-based method to automate localization high-dose-rate (HDR) prostate BT catheters through the patient's CT images. whole process divided into two phases using different neural networks. First, needles segmentation was accomplished pix2pix Generative Adversarial Neural network (pix2pix GAN). Second, Generic Object...

ENWEndNote BIBJabRef, Mendeley RISPapers, Reference Manager, RefWorks, Zotero AMA Siavashpour Z, Aghamiri M, Jaberi R, Manshadi H, Ghaderi Kirisits C. Optimum organ volume ranges for organs at risk dose in cervical cancer intracavitary brachytherapy. Journal of Contemporary Brachytherapy. 2016;8(2):135-142. doi:10.5114/jcb.2016.59687. APA Siavashpour, Z., Aghamiri, M., Jaberi, R., Manshadi, H., Ghaderi, & Kirisits, (2016). Brachytherapy, 8(2), 135-142. https://doi.org/10.5114/jcb.2016.59687...

This study was designed to assess the dose accumulation (DA) of bladder and rectum between brachytherapy fractions using hybrid-based deformable image registration (DIR) compare it with simple summation (SS) approach GEC-ESTRO in cervical cancer patients.Patients (n = 137) treated 3D conformal radiotherapy three high-dose-rate were selected. CT images acquired delineate organs at risk targets according recommendations. In order determine DA for rectum, DIR done different results compared...

Dose escalation with high-energy X rays of medical linear accelerators (linacs) in radiotherapy offers several distinct advantages over the lower energy photons. However, owing to photoneutron reactions, interaction photons (>8 MV) various high-Z nuclei materials linac head components produces unavoidable neutrons. The aim this study was evaluate dose equivalent per unit therapeutic X-ray 18 MV, GE Saturne 20 treatment room using Monte Carlo (MC) MCNP full simulation as well...

This study was designed to assess dosimetric characteristics of 3D-printed personalized multi-channel cylinder applicator (MCCA).UnionTech RS Pro 600 (UnionTech, Inc., Shanghai, China) 3D printer used for manufacturing MCCA. The geometry MCCA with Fusion 360 v.2.0.5827 (Autodesk, Inc.) software. file exported Meshmixer v.3.5 create three-dimensional model in stereolithography (STL) format, which is the common format inputting data printers. We high-temp resin, FLHTAM02 (Formlabs MA, USA), as...

The aim of this study was to develop a new in-house low-cost surface mould, and evaluate its performance dosimetric properties for high-dose-rate (HDR) cobalt-60 (

Accuracy of treatment planning systems may significantly influence the efficacy brachytherapy. The purpose this work is a detailed, varied and independent evaluation an in‐house brachytherapy software called STPS. Operational accuracy STPS was investigated. Geometric tests were performed to validate entry reconstruction positional information from scanned orthogonal films. MCNP4C Monte Carlo code TLDs used for simulation experimental measurement, respectively. data also compared with those...

ENWEndNote BIBJabRef, Mendeley RISPapers, Reference Manager, RefWorks, Zotero AMA Jaberi R, Siavashpour Z, Aghamiri M, Kirisits C, Ghaderi R. Artificial neural network based gynaecological image-guided adaptive brachytherapy treatment planning correction of intra-fractional organs at risk dose variation. Journal Contemporary Brachytherapy. 2017;9(6):508-518. doi:10.5114/jcb.2017.72567. APA Jaberi, R., Siavashpour, Z., Aghamiri, M., Kirisits, C., & Ghaderi, (2017). Brachytherapy, 9(6),...

Abstract Purpose This study aimed to evaluate the feasibility of defining an in vivo dosimetry (IVD) protocol as a patient‐specific quality assurance (PSQA) using bead thermoluminescent dosimeters (TLDs) for point and 3D IVD during brachytherapy (BT) gynecological (GYN) cancer 60 Co high‐dose‐rate (HDR) source. Methods The absorbed dose verification within rectum bladder organs‐at‐risk was performed by TLDs 30 GYN patients. For rectal wall dosimetry, 80 were placed axial arrangements around...

Background: Veal is a rich nutrient medium that provides suitable environment for proliferation of veal spoiling microorganisms and common food-borne pathogens. In this study, the effects irradiation on microbiological quality half life minced beef during chilled storage was investigated. Materials Methods: Twenty samples were irradiated with doses 2, 5, 7, 10 kGy (Cobalt-60, gamma cell 220) evaluated their up to days. Results: The results showed reduced number in all samples, (P < 0.01)....

The purpose of this study was to investigate the concurrent effects tandem length and bladder volume on dose pelvic organs at risk (OARs) in HDR intracavitary brachytherapy treatment cervical cancer. Twenty patients with locally advanced cancer were selected for using Rotterdam applicators. CT scanned twice empty full bladder. Two plans prepared each image sets. Patients categorized into two groups; those treated a 4 cm or smaller larger than ( ). Only one tip angle 30° studied. Dose‐volume...

Abstract Aim: In this study, the radiation contamination dose (RCD) for different combinations of electron energy/distance, applicator and radius around light intraoperative accelerator (LIAC), a high per pulse dedicated radiotherapy machine, has been estimated. Being aware about amount RCDs is highly recommended linear medical accelerators. Methods methods: Monte Carlo Nuclear Particles (MCNP) code was used to simulate LIAC® head calculate RCDs. Experimental measurements were also done by...

Ocular melanoma is a rare kind of eye malignancy that threatens the patient's eyesight. Radiotherapy and surgical removal are most commonly used therapeutic modalities, nanomedicine has lately entered this field. Brachytherapy using Ruthenium-106 (106 Ru) ophthalmic plaques been for decades to treat ocular melanoma, with applicator placed on eyes until prescribed dose reaches tumor apex.To investigate efficiency hydrogen nanobubbles (H2 -NBs) employment during intraocular brachytherapy 106...

The Iranian Red Crescent Medical Journal (IRCMJ) is international, open access, peer-reviewed, monthly, and ISI- Journal, affiliated to Hospital- Dubai, publishes original scientific studies in English that have direct clinical significance on Basic Science, Clinical Medicine, Disaster Management. journal strives release the articles related various disciplines of medicine, including Review Articles, Meta-Analysis, Systematic Reviews, Experimental Trials, Case Reports, Letters. All research...

Dear Editor, Breast cancer is the second most common neoplasia and first leading cause of death among women in world (1). Early diagnosis breast plays a critical role reducing mortality rates improving patient’s prognosis (2, 3). Mammography an extremely useful technique for detection (4). An important goal this imaging modality to obtain best diagnostic information by delivering least radiation (5, 6). Some protocols International Atomic Energy Agency (IAEA) are involved process...