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Articles 67771 - 67800 of 77235
Full-Text Articles in Entire DC Network
Chronic Pain, Roberta Ball, Do
Chronic Pain, Roberta Ball, Do
Jefferson Journal of Psychiatry
A complex problem of vast dimensions, chronic pain is receiving increasing attention due to the expansion of knowledge of the neurophysiology, neurochemistry and psychology of pain. Chronic pain presents a challenge to many disciplines in the health professions, and one that is more recently being presented to the psychiatrist.This paper will attempt to define the problem of chronic pain, to explore the concept of organic versus psychogenic pain, to describe the psychodynamics and other characteristics seen in the chronic pain patient and to discuss the importance of the psychiatristin evaluation and treatment of chronic pain .
The Evaluation And Treatment Of A Patient With Anorexia Nervosa, Gail S. Greenspan, Md
The Evaluation And Treatment Of A Patient With Anorexia Nervosa, Gail S. Greenspan, Md
Jefferson Journal of Psychiatry
Introduction
Anorexia nervosa is a serious illness that has generated enormous public interest during recent times. Within the psychiatric field, numerous articles and books have been written about this syndrome. This literature reflects varied theoretical frameworks, from primarily biological approaches to family systems to psychodynamic theory. In this paper I will attempt to integrate family systems and psychodynamic theory in an understanding of a young woman with anorexia nervosa who was treated in a hospital setting.
Faculty Advisor's Column, Harvey J. Schwartz, Md
Faculty Advisor's Column, Harvey J. Schwartz, Md
Jefferson Journal of Psychiatry
This issue of our Journal marks a new stage in our development. We have started accepting papers from residency programs other than our own. Encouraged by the enthusiastic response our prior issues have elicited from psychiatric educators around the country, we are embarking on a program of expansion. In doing so we hope to provide a unique arena for psychiatric resident thinking. Residents nationwide are invited to share with each other and their faculties, their discoveries, their uncertaintiesand the newness with which they view their work.
Resistant Thyrotoxicosis In A Patient With Graves Disease: A Case Report, Taimur Saleem, Aisha Sheikh, Qamar Masood
Resistant Thyrotoxicosis In A Patient With Graves Disease: A Case Report, Taimur Saleem, Aisha Sheikh, Qamar Masood
Section of Diabetes, Endocrinology and Metabolism
Background: Conventional management of thyrotoxicosis includes antithyroid drugs, radioactive iodine, and surgery while adjunctive treatment includes beta-blockers, corticosteroids, inorganic iodide and iopanoic acid. Very rarely, patients may be resistant to these modalities and require additional management.
Case Presentation: A 50-year-old lady presented with weight loss and palpitations diagnosed as atrial fibrillation. Her past history was significant for right thyroid lobectomy for thyrotoxicosis. Thyroid functions tests at this presentation showed free T4 of 6.63 ng/dl (normal range: 0.93-1.7) and TSH of <0.005 μIU/mL (normal range: 0.4-4.0). She was given aspirin, propranolol, heparin and carbimazole; however free T4 failed to normalize. Switching to propylthiouracil (PTU) did not prove successful. She was then given high doses of prednisolone (1 mg/kg/day) and lithium (400 mg twice daily) which prepared the patient for radioactive iodine treatment by reducing free T4 levels (2.82 ng/dl). Two doses of radioactive iodine were then administered 6 months apart. Subsequently she became hypothyroid and was started on thyroid replacement therapy.
Conclusion: This case highlights management options in patients with resistant thyrotoxicosis. Radioactive iodine and surgery are definitive modes …
0.005>Cell Migration Dynamics After Alteration Of Cell-Cell Contacts In Fibrosarcoma And Glioblastoma Cell Lines, Hassan S. Rizvi, Ronald K. Gary
Cell Migration Dynamics After Alteration Of Cell-Cell Contacts In Fibrosarcoma And Glioblastoma Cell Lines, Hassan S. Rizvi, Ronald K. Gary
Undergraduate Research Opportunities Program (UROP)
Cell migration is a vital component of metastasis. In this study, our intent was to study cell migration by alteration of the Wnt/GSK-3 Pathway. Since BeSO4 is a known GSK-3 kinase inhibitor, we hypothesized that this agent would cause cell migration to decrease as a result of β-catenin stabilization. Two human cell lines, HT-1080 (fibrosarcoma) and A172 (glioblastoma), were used to observe migration levels in the presence and absence of BeSO4. Our results show that cell migration is diminished for cells that were pre-treated with BeSO4, in comparison to the untreated (control) cells.
Tlr4 Mutation Reduces Microglial Activation, Increases Aβ Deposits And Exacerbates Cognitive Deficits In A Mouse Model Of Alzheimer's Disease, Min Song, Jingji Jin, Jinghong Kou, Abhinandan Pattanayak, Jamaal Rehman, Hong-Duck Kim, Ken-Ichiro Fukuchi
Tlr4 Mutation Reduces Microglial Activation, Increases Aβ Deposits And Exacerbates Cognitive Deficits In A Mouse Model Of Alzheimer's Disease, Min Song, Jingji Jin, Jinghong Kou, Abhinandan Pattanayak, Jamaal Rehman, Hong-Duck Kim, Ken-Ichiro Fukuchi
NYMC Faculty Publications
BACKGROUND: Amyloid plaques, a pathological hallmark of Alzheimer's disease (AD), are accompanied by activated microglia. The role of activated microglia in the pathogenesis of AD remains controversial: either clearing Aβ deposits by phagocytosis or releasing proinflammatory cytokines and cytotoxic substances. Microglia can be activated via toll-like receptors (TLRs), a class of pattern-recognition receptors in the innate immune system. We previously demonstrated that an AD mouse model homozygous for a loss-of-function mutation of TLR4 had increases in Aβ deposits and buffer-soluble Aβ in the brain as compared with a TLR4 wild-type AD mouse model at 14-16 months of age. However, it …
Treatment Of Cerebrospinal Fluid Leak During Spinal Cord Stimulator Implantation With Epidural Blood Patches, Farid Kia, Md, Linqiu Zhou, Md, Jason Berk, Md
Treatment Of Cerebrospinal Fluid Leak During Spinal Cord Stimulator Implantation With Epidural Blood Patches, Farid Kia, Md, Linqiu Zhou, Md, Jason Berk, Md
Department of Rehabilitation Medicine Faculty Papers
Conclusion:
Our data is consistent with prior studies in demonstrating that the incidence of dural puncture and CSF leak with SCS procedures is rare. Based on our experiences, performing an epidural blood patch intra-operatively on the contra-lateral side under fluoroscopy could prevent PDPH. This treatment should especially be considered in patients undergoing SCS trials in order to accurately assess the level of pain reduction. Patients with prior spine surgeries might pose higher risks for dural puncture and more extensive pre-operative assessment could be beneficial.
Urinary Nitrate Might Be An Early Biomarker For Pediatric Acute Kidney Injury In The Emergency Department, Asad Mian, Yue Du, Harsha K Garg, Chantal Caviness, Stuart L Goldstein, Nathan S Bryan
Urinary Nitrate Might Be An Early Biomarker For Pediatric Acute Kidney Injury In The Emergency Department, Asad Mian, Yue Du, Harsha K Garg, Chantal Caviness, Stuart L Goldstein, Nathan S Bryan
Department of Emergency Medicine
NO is involved in normal kidney function and perturbed in acute kidney injury (AKI). We hypothesized that urinary concentration of NO metabolites, nitrite, and nitrate would be lower in children with early AKI presenting to the emergency department (ED), when serum creatinine (SCr) was uninformative. Patients up to 19 y were recruited if they had a urinalysis and SCr obtained for routine care. Primary outcome, AKI, was defined by pediatric Risk, Injury, Failure, Loss of function, End-stage renal disease (pRIFLE) criteria. Urinary nitrite and nitrate were determined by HPLC. A total of 252 patients were enrolled, the majority (93%) of …
Primary Non-Functioning Paraganglioma Of Liver: A Rare Tumour At An Unusual Location, Muhammad Rizwan Khan, Rushna Raza, Abdul Jabbar, Arsalan Ahmed
Primary Non-Functioning Paraganglioma Of Liver: A Rare Tumour At An Unusual Location, Muhammad Rizwan Khan, Rushna Raza, Abdul Jabbar, Arsalan Ahmed
Section of General Surgery
Pheochromocytomas are rare tumours, 22% of which are extra-adrenal and are known as paragangliomas. We report a case of a young male with non-functioning paraganglioma of the liver; a very uncommon primary site. A CT scan with contrast showed a huge, highly vascular mass lesion in the right lobe of the liver and a core biopsy confirmed it to be a paraganglioma. Whole body study with iodine-131-meta-iodobenzylguanidine (MIBG) tracer highlighted the liver tumour but was negative for any other active lesions depicting that the tumour was confined to the liver. The lesion was completely resected by extended right hepatectomy and …
Oncolog, Volume 56, Number 08, August 2011, Stephanie Deming, Sunni Hosemann
Oncolog, Volume 56, Number 08, August 2011, Stephanie Deming, Sunni Hosemann
OncoLog MD Anderson's Report to Physicians (All issues) Archives
- Addressing the Cardiac Complications of Cancer Treatment: Patients with cancer surviving longer than ever after treatment, and new targeted therapy agents are being introduced into the clinic with increasing frequency. These advances are cause for optimism, but they have also led to an increased incidence of cardiac complications of cancer therapy
- Compass: Early- and Intermediate-Stage Gastric Cancer: Neoadjuvant of adjuvant treatments offer higher cure rates than surgery alone
- HOUSE CALL: Managing Disease-Related Fatigue- Patients and doctors offer can make fatigue less severe
Protein Kinase Cδ And C-Abl Kinase Are Required For Transforming Growth Factor Β Induction Of Endothelial-Mesenchymal Transition In Vitro., Zhaodong Li, Sergio A. Jimenez
Protein Kinase Cδ And C-Abl Kinase Are Required For Transforming Growth Factor Β Induction Of Endothelial-Mesenchymal Transition In Vitro., Zhaodong Li, Sergio A. Jimenez
Department of Medicine Faculty Papers
OBJECTIVE: The origin of the mesenchymal cells responsible for the intimal fibrosis in systemic sclerosis (SSc) has not been fully identified. The present study was undertaken to investigate whether subendothelial mesenchymal cells may emerge through transdifferentiation of endothelial cells (ECs) into myofibroblasts via endothelial-mesenchymal transition (EndoMT) in vitro and to explore the signaling pathways involved in this process.
METHODS: Primary mouse pulmonary ECs isolated by immunomagnetic methods with sequential anti-CD34 and anti-CD102 antibody selection were cultured in monolayers. Cell morphology and diacetylated low-density lipoprotein uptake assays confirmed their EC characteristics. The induction of EndoMT was assessed by determination of α-smooth …
P2-498 Parents' Perceptions And Practices Regarding Consanguinity Related To Β-Thalassaemia: A Matched Case Control Study, M Beg, R Siddiqui, Khabir Ahmad, Khadija Humayun
P2-498 Parents' Perceptions And Practices Regarding Consanguinity Related To Β-Thalassaemia: A Matched Case Control Study, M Beg, R Siddiqui, Khabir Ahmad, Khadija Humayun
Department of Surgery Docs
introduction b-thalassaemia is most common genetically transmitted disorder in Eastern Mediterranean region including Pakistan. Like other recessive disorders, prevalence increases through consanguinity; Pakistan Demographic and Health Survey reports 50% consanguineous marriages. Perceptions about consanguinity in our population have recently not been studied. Objectives were to determine consanguinity related characteristics among parents of children with thalassaemia and without thalassaemia visiting a major health centre in Karachi-Pakistan. To compare consanguinity practices among such families and to assess susceptibility, benefits and barriers towards thalassaemia. Methods Sample of 340 cases and 340 controls; age-sex matched were selected from February to April 2010. Parents of …
Primary Provider Beliefs And Practice Patterns Contribute To The Lack Of Hiv/Hcv Coinfected Patients Undergoing Liver Transplantation In The United States, Jonathan M. Fenkel, Md, Victor J. Navarro, Md
Primary Provider Beliefs And Practice Patterns Contribute To The Lack Of Hiv/Hcv Coinfected Patients Undergoing Liver Transplantation In The United States, Jonathan M. Fenkel, Md, Victor J. Navarro, Md
Division of Gastroenterology and Hepatology Faculty Papers
Conclusions:
1. The majority of primary providers were ambivalent toward or against LT for HIV/HCV coninfected patients.
2. Half of all respondents were unlikely to refer cirrhotic coinfected patients for LT evaluation.
3. HIV specialists were significantly more likely to believe transplant should be offered, but reported no difference in likelihood of LT referral.
4. These findings suggest that primary provider beliefs and self-reported practice patterns may partially explain the paucity of coinfected US liver transplant recipients.
Assessment Of Adherence To Guidelines For Hepatocellular Carcinoma Screening In Hiv/Hcv Coinfected Patients, Jonathan M. Fenkel, Md, Victor J. Navarro, Md
Assessment Of Adherence To Guidelines For Hepatocellular Carcinoma Screening In Hiv/Hcv Coinfected Patients, Jonathan M. Fenkel, Md, Victor J. Navarro, Md
Division of Gastroenterology and Hepatology Faculty Papers
Conclusions:
1. Self-reported adherence with published guidelines for HCC screening is poor among primary providers for HIV/HCV coinfected patients, including HIV specialists and University-based providers.
2. Unnecessary imaging is also frequently ordered on non-cirrhotics, particularly by University-based providers.
3. Improved adherence to guidelines is needed among primary providers as over 50% of HCC's may be missed, and many patients many not be referred for subspecialty GI or Liver care, where screening practices may differ.
Analysis Of Chlamydia Pneumoniae And Ad-Like Pathology In The Brains Of Balb/C Mice Following Direct Intracranial Infection With Chlamydia Pneumoniae, Jessica Rachel Barton
Analysis Of Chlamydia Pneumoniae And Ad-Like Pathology In The Brains Of Balb/C Mice Following Direct Intracranial Infection With Chlamydia Pneumoniae, Jessica Rachel Barton
PCOM Biomedical Studies Student Scholarship
Alzheimer’s disease (AD) is an age-related progressive neurodegenerative disorder and the most common form of dementia. The pathology in the central nervous system (CNS) impairs memory and cognition, hindering the capabilities and the quality of life of the individual. This project continues studying the role of infection and Alzheimer’s disease and contributes to the overall understanding of the possible causes of this disease. In this study, BALB/c mice were infected, via direct intracranial injection, with a respiratory isolate (AR-39) of Chlamydia pneumoniae. Their brains were analyzed at 7 and 14 days post-infection, using immunohistochemistry, for the presence of C. …
A Comparison Of Spatio-Temporal Prediction Methods Of Cancer Incidence In The U.S, Michelle Hamlyn
A Comparison Of Spatio-Temporal Prediction Methods Of Cancer Incidence In The U.S, Michelle Hamlyn
UNLV Theses, Dissertations, Professional Papers, and Capstones
Cancer is the cause of one out of four deaths in the United States, and in 2009, researchers expected over 1.5 million new patients to be diagnosed with some form of cancer. People diagnosed with cancer, whether a common or rare type, need to undergo treatments, the amount and kind of which will depend on the severity of the cancer. So how do healthcare providers know how much funding is needed for treatment? What would better enable a pharmaceutical company to determine how much to allocate for research and development of drugs, the amount of each drug to manufacture, or …
Novel Irradiated Axial Rotational Flap Model In The Rodent, Adam J. Luginbuhl, Mara Modest, Bs, Kaiguo Yan, Joseph Curry, Ryan N. Heffelfinger
Novel Irradiated Axial Rotational Flap Model In The Rodent, Adam J. Luginbuhl, Mara Modest, Bs, Kaiguo Yan, Joseph Curry, Ryan N. Heffelfinger
Department of Otolaryngology - Head and Neck Surgery Faculty Papers
Abstract
Objectives: To design an easily reproducible rodent rotational skin flap and to evaluate the effects of radiation on flap viability.
Methods: Ten rats received 40 Gy irradiation to the abdominal wall. Following a recovery period of one month, a 3 X 8 cm fasciocutaneous flap based axially on the inferior epigastric vessel, was raised and rotated 60 degrees into a contralateral deficit. Five non-irradiated rats underwent the identical procedure as a control. Animals were sacrificed seven days postoperatively, areas of flap necrosis were documented, and histological specimens were taken to compare flap viability and vessel density.
Results: 60% of …
Brain Activation And Connectivity In Non-Disabled Multiple Sclerosis Patients, Rene A. Colorado
Brain Activation And Connectivity In Non-Disabled Multiple Sclerosis Patients, Rene A. Colorado
Dissertations and Theses (Open Access)
Multiple sclerosis (MS) is the most common demyelinating disease affecting the central nervous system. There is no cure for MS and current therapies have limited efficacy. While the majority of individuals with MS develop significant clinical disability, a subset experiences a disease course with minimal impairment even in the presence of significant apparent tissue damage on magnetic resonance imaging (MRI). The current studies combined functional MRI and diffusion tensor imaging (DTI) to elucidate brain mechanisms associated with lack of clinical disability in patients with MS. Recent evidence has implicated cortical reorganization as a mechanism to limit the clinical manifestation of …
Chapter 01: The Making Cancer History® Voices Oral History Project, Stephen Tomasovic Phd, Tacey A. Rosolowski Phd
Chapter 01: The Making Cancer History® Voices Oral History Project, Stephen Tomasovic Phd, Tacey A. Rosolowski Phd
Interview Chapters
In this chapter, Dr. Tomasovic provides an overview of the Historical Resources Center –which he founded-- and the Making Cancer History Voices Oral History Project that it oversees.
Sub Total Aortic Replacement Using Simultaneous Bentall And Elephant Trunk Procedure, Mehreen Kisat, Umer Darr
Sub Total Aortic Replacement Using Simultaneous Bentall And Elephant Trunk Procedure, Mehreen Kisat, Umer Darr
Section of Cardiothoracic Surgery
A 22 year old female with valvular heart disease, moderate mitral valve insufficiency, moderate aortic insufficiency, extensive aneurysmal dilatation of the entire ascending aorta and arch, and segmental dilatation of descending aorta underwent entire anterior aortic replacement. We performed aortic root and valve replacement with a composite graft, followed by coronary artery reimplantation using the Bentall and De Bono technique. Simultaneously, we carried out a graft replacement of the transverse arch and descending aortic aneurysms with a woven Dacron graft using the Elephant Trunk technique. The goal of this surgery was to correct or optimally treat the multiple sites of …
Surgical Correction Of Aorto-Pulmonary Window: A Rare And Lethal Cause Of Pulmonary Hypertension, Adeel Ahmed Shamim, Mubashir Zareen Khan, Mehnaz Ahmed Atiq, Mansoor Ahmed Khan, Muhammad Muneer Amanullah
Surgical Correction Of Aorto-Pulmonary Window: A Rare And Lethal Cause Of Pulmonary Hypertension, Adeel Ahmed Shamim, Mubashir Zareen Khan, Mehnaz Ahmed Atiq, Mansoor Ahmed Khan, Muhammad Muneer Amanullah
Section of Cardiothoracic Surgery
Aorto-pulmonary window is a relatively rare congenital cardiac malformation with an overall incidence of 0.1%. Pulmonary hypertension develops quickly if the lesion is left untreated hence early surgical intervention is warranted after diagnosis. The surgery for correction of APW has evolved over years, currently an open repair on cardiopulmonary bypass (CPB) with a single patch technique yields good results. Mortality is affected by association of pulmonary hypertension and other cardiac malformations. We present a case of an infant with a large type II APW with a relatively low pulmonary vascular resistance. Hospital stay was complicated because of pulmonary arterial disease …
Impact Of An Online Support System On Health Related Quality Of Life Among Men Diagnosed With Prostate Cancer, Daniel K. Osei
Impact Of An Online Support System On Health Related Quality Of Life Among Men Diagnosed With Prostate Cancer, Daniel K. Osei
Loma Linda University Electronic Theses, Dissertations & Projects
Prostate cancer is a major public health issue worldwide and a significant cause of male cancer death in the USA. Though early screening and treatment has greatly enhanced the outcome, men diagnosed with prostate cancer face problems that compromise quality of life after treatment. Online support for prostate cancer clients is a convenient way to help because it is anonymous, inexpensive, and can be used at clients’ convenience. Yet few studies have explored how these supports impact these clients. This study used a longitudinal randomized experimental design to examine the impact of online services on quality of life of prostate …
In-Vivo Ct Dosimetry During Virtual Colonoscopy, Jonathon W. Mueller
In-Vivo Ct Dosimetry During Virtual Colonoscopy, Jonathon W. Mueller
Dissertations and Theses (Open Access)
Virtual colonoscopy (VC) is a minimally invasive means for identifying colorectal polyps and colorectal lesions by insufflating a patient’s bowel, applying contrast agent via rectal catheter, and performing multi-detector computed tomography (MDCT) scans. The technique is recommended for colonic health screening by the American Cancer Society but not funded by the Centers for Medicare and Medicaid Services (CMS) partially because of potential risks from radiation exposure. To date, no in‐vivo organ dose measurements have been performed for MDCT scans; thus, the accuracy of any current dose estimates is currently unknown.
In this study, two TLDs were affixed to the inner …
Growth Inhibition Of Human Hepatocellular Carcinoma Cells By Overexpression Of G Protein-Coupled Receptor Kinase 2, Zhengyu Wei, Reginald Hurtt, Cataldo Doria
Growth Inhibition Of Human Hepatocellular Carcinoma Cells By Overexpression Of G Protein-Coupled Receptor Kinase 2, Zhengyu Wei, Reginald Hurtt, Cataldo Doria
Department of Surgery Faculty Papers
Summary:
In this study, we investigated a novel approach for HCC treatment by inducing overexpression of GRK2 in human HCC cells. We found that overexpression of GRK2 through recombinant adenovirus transduction inhibits the growth of human HCC cells. BrdU incorporation assay showed that the growth inhibition caused by elevated GRK2 level was due tot he reduced cell proliferation but not apoptosis. To examine the anti-proliferative function of increased GRK2 level, we performed cell cycle analysis using propidium iodide staining. We found that the proliferation suppression was associated with G2/M phase cell cycle arrest by the wild type GRK2 but not …
Performance Of Colorectal Cancer Screening Steps In Primary Care, Salini Mohanty, Mph, Mona Sarfaty, Md, Mph, Faafp, Randa Sifri, Md
Performance Of Colorectal Cancer Screening Steps In Primary Care, Salini Mohanty, Mph, Mona Sarfaty, Md, Mph, Faafp, Randa Sifri, Md
Department of Family & Community Medicine Presentations and Grand Rounds
Discussion:
This analysis revealed the differences in which physicians in primary care complete CRC screening steps. The approach and completion of screening steps varied greatly among practices.
There was a correlation between the quantitative data and the qualitative data. The analysis from both methodologies produced similar results and supports each other's assessment.
All of the practices analyzed possessed one of the essential elements (a physician recommendation) which is the foundation for increased screening. All of the practices have the potential to expand upon this foundation in order to ensure that all eligible patients are approached and screened for CRC.
The …
Role Of Prostaglandin E2 In The Regulation Of Pancreatic Stellate Cells Hyper Activity Associated With Pancreatic Cancer, Chantale Charo
Role Of Prostaglandin E2 In The Regulation Of Pancreatic Stellate Cells Hyper Activity Associated With Pancreatic Cancer, Chantale Charo
Dissertations and Theses (Open Access)
Pancreatic cancer is one of the most lethal type of cancer due to its high metastasis rate and resistance to chemotherapy. Pancreatic fibrosis is a constant pathological feature of chronic pancreatitis and the hyperactive stroma associated with pancreatic cancer. Strong evidence supports an important role of cyclooxygenase-2 (COX-2) and COX-2 generated prostaglandin E2 (PGE2) during pancreatic fibrosis. Pancreatic stellate cells (PSC) are the predominant source of extracellular matrix production (ECM), thus being the key players in both diseases. Given this background, the primary objective is to delineate the role of PGE2 on human pancreatic stellate cells (PSC) hyper activation associated …
The Role Of Acidic Fibroblast Growth Factor And Fibroblast Growth Factor Receptor 4 In High Grade Serous Carcinoma, Tarrik Zaid
The Role Of Acidic Fibroblast Growth Factor And Fibroblast Growth Factor Receptor 4 In High Grade Serous Carcinoma, Tarrik Zaid
Dissertations and Theses (Open Access)
Background: High grade serous carcinoma whether ovarian, tubal or primary peritoneal, continues to be the most lethal gynecologic malignancy in the USA. Although combination chemotherapy and aggressive surgical resection has improved survival in the past decade the majority of patients still succumb to chemo-resistant disease recurrence. It has recently been reported that amplification of 5q31-5q35.3 is associated with poor prognosis in patients with high grade serous ovarian carcinoma. Although the amplicon contains over 50 genes, it is notable for the presence of several members of the fibroblast growth factor signaling axis. In particular acidic fibroblast growth factor (FGF1) …
Clinical Impact Of Couch To P And Rails On Imrt And Arc Therapy, Kiley B. Pulliam
Clinical Impact Of Couch To P And Rails On Imrt And Arc Therapy, Kiley B. Pulliam
Dissertations and Theses (Open Access)
Purpose: To evaluate the clinical impact of the Varian Exact Couch on dose and volume coverage to targets and critical structures and tumor control probability (TCP) for 6-MV IMRT and Arc Therapy.
Methods: Five clinical prostate patients were planned with both, 6-MV 8-field IMRT and 6-MV 2-field RapidArc using the Eclipse treatment planning system (TPS). These plans neglected treatment couch attenuation, as is standard clinical practice. Dose distributions were then recalculated in Eclipse with the inclusion of the Varian Exact Couch (imaging couch top) and the rails in varying configurations. The changes in dose and coverage were evaluated using the …
The Development And Implementation Of An Anthropomorphic Head Phantom For The Assessment Of Proton Therapy Treatment Procedures, Paige A. Summers
The Development And Implementation Of An Anthropomorphic Head Phantom For The Assessment Of Proton Therapy Treatment Procedures, Paige A. Summers
Dissertations and Theses (Open Access)
Proton therapy has become an increasingly more common method of radiation therapy, with the dose sparing to distal tissue making it an appealing option, particularly for treatment of brain tumors. This study sought to develop a head phantom for the Radiological Physics Center (RPC), the first to be used for credentialing of institutions wishing to participate in clinical trials involving brain tumor treatment of proton therapy. It was hypothesized that a head phantom could be created for the evaluation of proton therapy treatment procedures (treatment simulation, planning, and delivery) to assure agreement between the measured dose and calculated dose within …
Tp53 As A Biomarker In Head And Neck Squamous Cell Carcinoma, Thomas J. Ow Md
Tp53 As A Biomarker In Head And Neck Squamous Cell Carcinoma, Thomas J. Ow Md
Dissertations and Theses (Open Access)
Currently, there are no molecular biomarkers that guide treatment decisions for patients with head and neck squamous cell carcinoma (HNSCC). Several retrospective studies have evaluated TP53 in HNSCC, and results have suggested that specific mutations are associated with poor outcome. However, there exists heterogeneity among these studies in the site and stage of disease of the patients reviewed, the treatments rendered, and methods of evaluating TP53 mutation. Thus, it remains unclear as to which patients and in which clinical settings TP53 mutation is most useful in predicting treatment failure.
In the current study, we reviewed the records of a cohort …