A5038550648- Advanced Radiotherapy Techniques
- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Advanced MRI Techniques and Applications
- Radiation Therapy and Dosimetry
- Advances in Oncology and Radiotherapy
- Boron Compounds in Chemistry
- Nasal Surgery and Airway Studies
- Traumatic Ocular and Foreign Body Injuries
- Erythrocyte Function and Pathophysiology
- Machine Learning in Healthcare
- Lung Cancer Research Studies
- Cervical Cancer and HPV Research
- Ear Surgery and Otitis Media
- Pelvic and Acetabular Injuries
- COVID-19 Clinical Research Studies
- SARS-CoV-2 and COVID-19 Research
- Neonatal Health and Biochemistry
- Histiocytic Disorders and Treatments
- Chromatin Remodeling and Cancer
- Neuroendocrine Tumor Research Advances
- Vascular Malformations and Hemangiomas
- Dementia and Cognitive Impairment Research
University of Zurich
2023-2025
Siemens Healthcare (Germany)
2021-2024
Ganesh Shankar Vidyarthi Memorial Medical College
2008-2021
University of Minho
2020
Guru Jambheshwar University of Science and Technology
2015-2019
BLK Super Speciality Hospital
2010-2016
General Electric (India)
2015
SARS-CoV-2 is a newly emerging, highly transmissible, and pathogenic coronavirus in humans, which has caused global public health emergency economic crisis. To date, millions of infections thousands deaths have been reported worldwide, the numbers continue to rise. Currently, there no specific drug or vaccine against this deadly virus; therefore, pressing need understand mechanism through virus enters host cell. Viral entry into cell multistep process utilizes receptor binding domain spike...
Background and PurposeMagnetic Resonance (MR)-only radiotherapy enables the use of MR without uncertainty MR–Computed Tomography (CT) registration. This requires a synthetic CT (sCT) for dose calculations, which can be facilitated by novel Zero Echo Time (ZTE) sequence where bones are visible images acquired in 65 seconds. study evaluated calculation accuracy pelvic sites ZTE-based Deep Learning sCT algorithm developed GE Healthcare.Materials MethodsZTE were 56 patients position. A 2D U-net...
Abstract Objectives To generate pseudo-CT (pCT) images of the pelvis from zero echo time (ZTE) MR sequences and compare them to conventional CT. Methods Ninety-one patients were prospectively scanned with CT MRI including ZTE pelvis. Eleven image volumes excluded due implants severe B1 field inhomogeneity. Out 80 data sets, 60 used train update a deep learning (DL) model for pCT synthesis while remaining 20 cases selected as an evaluation cohort. assessed qualitatively quantitatively by two...
Neuroendocrine tumors of the larynx are extremely rare and represent <1% all primary laryngeal tumors. We report a case 55-year-old man who presented to us with tumor, histopathological evaluation which revealed it be neuroendocrine tumor. Diagnosis is based mostly on light microscopy may supported by special histochemical stains in some instances.
Context: Use of Co-60 source in place Ir-192 high dose rate brachytherapy unit (HDR unit) has come for discussion recent publications. based system been advocated centers which have fewer procedures as it comparative economically and administrative advantage. This study direct practical application such institutions, are at the cusp moving from to brachytherapy. Aims: Conversion HDR room analyze radiation safety around room. Materials Methods: Uniform thickness 15 cm concrete was added all...
Purpose To investigate proton density (PD)‐weighted zero TE (ZT) imaging for morphological depiction and segmentation of cranial bone structures. Methods A rotating ultra‐fast sequence (RUFIS) type ZT pulse was developed optimized 1) efficient capture short T 2 signals 2) flat PD response soft‐tissues. An inverse logarithmic image scaling (i.e., −log(image)) used to highlight differentiate it from surrounding soft‐tissue air. Furthermore, a histogram‐based bias‐correction method subsequent...
Motivation: Deep Learning (DL) is an enabling technology for MR-only Radiation Therapy Planning in terms of 1) MR to synthetic CT conversion and 2) automated Organ-At-Risk (OAR) segmentation. Goal(s): To investigate the feasibility DL based RT planning using accelerated protocols with &lt;5mins scan time (not including tumor depiction). Approach: Quantitative evaluation CTs mean absolute error (MAE) OAR segmentations Likert Score analysis. Results: Preliminary results demonstrate...
Abstract Background Recent developments in physiological and digital biomarkers provide an opportunity to shift the first diagnostic steps home‐setting, thus allowing earlier detection treatment of Alzheimer’s disease (AD). Blood‐based, magnetic resonance imaging, electrophysiological, microbiome have shown great promise call for evaluation their accuracy, feasibility safety primary care community. The aim PREDICTOM is develop test accuracy artificial intelligence (AI) driven screening...
The aim of this study is to investigate the effect scattering and differential attenuation on dose profile 6 MV photon beam in presence cadmium (Cd)-free compensator which has been used compensator-based intensity-modulated radiotherapy.Totally, 10 slabs Cd-free having thicknesses ranging from 2.4 61.4 mm have prepared. Dose profiles taken using computer-controlled radiation field analyzer for five sizes 30 × 200 at three depths water phantom. Off-axis variation (ODV) measured with off-axis...
In the present study, intensity-modulated radiotherapy (IMRT) commissioning has been validated as per task group report 119 (TG119) of American Association Physicists in Medicine (AAPM). The plans have done on structure and computed tomography scanned data set downloaded from AAPM website. IMRT test planning performed to achieve conformed dose distribution similar that described TG119 report. Point measurements with ionization chamber taken solid water phantom at a depth 7.5 cm. Measurements...
Purpose: To study the dosimetric properties of cadmium free alloy which is used in compensator based IMRT. Methods: A mixture 30% lead,52% bismuth and 18% tin was to prepare alloy. We prepared slabs different thicknesses ranging from 0.71 cm 6.14 cm. Density measured by Archimedes’ principle using SI‐234 Denver instrument water as buoyant liquid. Transmission, linear attenuation coefficient (µ), tissue phantom ration (TPR), beam hardening, surface dose (Ds), percentage depth (PDD) effect...
This study aims to investigate radiation beam geometry of Cyberknife and change in dosimetric characteristics six megavoltage (6MV) flattening filter free (FFF) after passing through high density cadmium compensator alloy.In this experimental study, changes FFF alloy was measured. Transmitted intensity measured air by an ion chamber at a source detector distance (SDD) 800mm. Extended SDD measurement also has been performed 1270mm analyze scattering due compensator. Linear attenuation...
<p class="abstract"><strong>Background: </strong>Tympanometry and computed tomography (CT) measurement of middle ear volume in patients with unilateral chronic otitis media.</p><p class="abstract"><strong>Methods: </strong>The prospective study was conducted on 50 diagnosed media showing clinical symptoms which affect quality life. Patients who were fulfilling inclusion criteria after screening selected for study. We studied had a tympanic membrane...