A5102982667- Advanced Radiotherapy Techniques
- Insect behavior and control techniques
- Head and Neck Cancer Studies
- Medical Imaging Techniques and Applications
- Management of metastatic bone disease
- Radiation Dose and Imaging
- Insect Pest Control Strategies
- Biological Control of Invasive Species
- Insect-Plant Interactions and Control
- Colorectal and Anal Carcinomas
- Head and Neck Surgical Oncology
- Lung Cancer Diagnosis and Treatment
- Radiomics and Machine Learning in Medical Imaging
- Cancer Diagnosis and Treatment
- Breast Cancer Treatment Studies
- Coleoptera Taxonomy and Distribution
- Insect Pheromone Research and Control
- Insect Resistance and Genetics
- Radiation Therapy and Dosimetry
- Prostate Cancer Diagnosis and Treatment
- Prostate Cancer Treatment and Research
- Minimally Invasive Surgical Techniques
- Allelopathy and phytotoxic interactions
- Plant and animal studies
- Forest Insect Ecology and Management
University of Ghana
2007-2024
University of Virginia
2011-2024
Karunya University
2015
University of Virginia Health System
2014
University of Alaska Fairbanks
2004
University of Georgia
1989-1997
Walter Reed Army Institute of Research
1988
Purpose: To describe the validation and implementation of a novel quality assurance (QA) system for TomoTherapy using Monte Carlo (MC)‐based secondary dose calculation CT detector‐based multileaf collimator (MLC) leaf opening time measurement QA verification. This is capable detecting plan transfer delivery errors evaluating dosimetric impact those errors. Methods: The authors’ process, MCLogQA, utilizes an independent pretreatment MC postdelivery exit MLC sinogram comparison log file...
The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is currently the most devastating invasive arthropod pest of maize in sub-Saharan Africa. Following its first report Ghana 2016, control has been reliant mainly on synthetic chemicals. However, biocontrol an effective, sustainable, cheaper, and environmentally friendly option for FAW management. We tested potential red flower assassin bug, Rhynocoris segmentarius (Germar) (Hemiptera: Reduviidae) as a natural...
To investigate the prognostic significance of p16 in patients with hypopharyngeal squamous cell carcinoma (HPSCC) and to evaluate relationship between human papillomavirus (HPV). Unlike oropharyngeal SCC (OPSCC), HPSCC its association HPV is unclear.Retrospective medical chart review.University tertiary referral center.A total 27 treated definitive radiation therapy 2002 2011 whose tissue was available for immunohistochemical analysis.Twenty-two were chemoradiation, 5 alone. All tumor biopsy...
<h3>Importance</h3> The prognostic significance of p16 in squamous cell carcinoma (SCC) the hypopharynx (HP) and nasopharynx (NP) relationship between human papillomavirus (HPV) is unclear. <h3>Objectives</h3> To evaluate pharyngeal subsites (oropharynx [OP], HP, NP) assess HPV HP NP. <h3>Design, Setting, Participants</h3> Retrospective medical record review 172 patients with SCC pharynx treated definitive radiation therapy from 2002 to 2013 at a university tertiary referral center, tissue...
Chromolaena odorata (L.) R.M. King and H. Robinson (Asteraceae) is a perennial weedy shrub of neotropical origin serious biotic threat in its invasive range. The Asian-West Africa (AWA) biotype C. present West both morphologically genetically different from the southern African (SA) biotype. AWA was first introduced into Nigeria late 1930s rapidly spread across Africa. Currently, 12 16 countries have been invaded, with significant negative effects on indigenous flora fauna. However, locals...
We evaluated a panel of 8 immunohistochemical biomarkers as predictors clinical response to definitive intensity-modulated radiotherapy in patients with oropharyngeal squamous cell carcinoma (OPSCC). 106 OPSCC were treated total dose 66-70 Gy and retrospectively analyzed for locoregional control (LRC), disease-free survival (DFS), overall (OS). All tumors had p16 staining, 101 also epidermal growth factor receptor (EGFR) staining. 53% the sufficient archived pathologic specimens...
Intensity-modulated radiation therapy (IMRT) is frequently utilized after prostatectomy without strong evidence for an improvement in outcomes compared to conformal (RT). We analyzed a large group of patients treated with RT radical (RP) compare complications IMRT and CRT. The Surveillance, Epidemiology End Results (SEER)-Medicare database was queried identify male Medicare beneficiaries aged 66 years or older who underwent 1+ adverse pathologic features received postprostatectomy between...
Planning and treatment of bone metastases with palliative radiotherapy often requires 1-3 weeks, resulting in patient inconvenience delayed palliation. We developed an expedited workflow that delivers stereotactic body radiation therapy (SBRT) to painful which CT, planning, quality assurance (QA), initial are performed one day. This prospective pilot clinical trial evaluates the feasibility, safety, efficacy, satisfaction this workflow.Patients were prospectively enrolled treated 2-5...
Background: We analyzed the pattern of distant metastasis (DM) and secondary primary cancers (SPC) in patients with oropharyngeal squamous cell carcinoma (OPSCC) to develop surveillance guidelines. Methods: A retrospective review 177 OPSCC treated intensity modulated radiation therapy ± chemotherapy between 2002 2012 was performed characterize rate, pattern, timing DM SPC. Results: Sixteen (9.0%) developed 9 (5.1%) a Overall, 24/177 (13.6%) and/or SPC for total 27 events. 92.6% (25/27)...
Purpose: To develop a QA process that combines the pre-treatment plan verification with post-treatment delivery verification. Individual source of error such as dose calculator, MLC, and gantry angle can be isolated analyzed. Methods: A Monte-Carlo (MC) package, TomoPen, has been modified for During TomoTherapy treatment, information ion chamber measured output, couch position, MVCT exit-detectors fluence are recorded into log file (rawdata). The is retrieved after each treatment about...
Abstract Introduction Human papillomavirus-related (HPV + ) oropharyngeal squamous cell carcinoma (OPSCC) is increasing in incidence and presents diagnostic challenges given its unique clinical presentation. Objective The purpose of the present study to characterize impact presentation HPV-related OPSCC on delays diagnosis. Methods Retrospective review presenting symptoms characteristics 284 patients with treated from 2002–2014. Delay diagnosis was defined as presence any following: multiple...
Abstract Thaumatotibia leucotreta Meyrick (Lepidoptera: Tortricidae) is a major threat to the production and marketing of pepper (Capsicum spp.) in Ghana. To reduce damage pest on farming, it important find appropriate control methods, which may include use resistant host plants. This study investigated relative susceptibility 6 varieties commonly cultivated Ghana: Legon 18, Bird’s eye, Scotch bonnet, Cayenne, KA2, sweet (Yolo wonder+ variety). Choice no-choice ovipositional preference tests...