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Articles 2221 - 2250 of 2336

Full-Text Articles in Radiology

Prevention Of Radiation-Induced Skin Reactions In Breast Cancer External Irradiation, Cathy Ammerman Mar 2002

Prevention Of Radiation-Induced Skin Reactions In Breast Cancer External Irradiation, Cathy Ammerman

Masters Theses & Specialist Projects

Radiation dermatitis is a common side effect of external beam radiation therapy. The purpose of this study was to evaluate the effectiveness of applying an aloe vera based skin gel to the target area skin in preventing the development of radiation dermatitis to postlumpectomy/ mastectomy patients receiving external beam radiation therapy in an ambulatory radiation-oncology clinic in the southeastern region of the United States. In this descriptive correlational study, a convenience sample of willing participants (n=18) was followed from initial treatment through the one-month follow-up examination to assess the intensity of their skin reaction. Five research questions were examined pertaining …


View Box Case--3 Hepatic Hemangioma, I Masroor, R Hashmi Mar 2002

View Box Case--3 Hepatic Hemangioma, I Masroor, R Hashmi

Department of Radiology

No abstract provided.


View Box Case--2 Mid-Colic Intussusception, I Masroor, R Hashmi Feb 2002

View Box Case--2 Mid-Colic Intussusception, I Masroor, R Hashmi

Department of Radiology

No abstract provided.


Implementation Of The Scholarly Activity Standard In Diagnostic Radiology Residency Programs, Judith E. Malinowski Jan 2002

Implementation Of The Scholarly Activity Standard In Diagnostic Radiology Residency Programs, Judith E. Malinowski

Seton Hall University Dissertations and Theses (ETDs)

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Initiation Of Apoptosis In Cells Exposed To Medium From The Progeny Of Irradiated Cells: A Possible Mechanism For "Bystander" Induced Genomic Instability., Fiona Lyng, B. Maguire, B. Mcclean, C. Seymour, Carmel Mothersill Jan 2002

Initiation Of Apoptosis In Cells Exposed To Medium From The Progeny Of Irradiated Cells: A Possible Mechanism For "Bystander" Induced Genomic Instability., Fiona Lyng, B. Maguire, B. Mcclean, C. Seymour, Carmel Mothersill

Articles

Much evidence now exists regarding radiation-induced bystander effects, but the mechanisms involved in the transduction of the signal are still unclear. The mitogen-activated protein kinase (MAPK) pathways have been linked to growth factor-mediated regulation of cellular events such as proliferation, senescence, differentiation and apoptosis. Activation of multiple MAPK pathways such as the ERK, JNK and p38 pathways have been shown to occur after exposure of cells to radiation and a variety of other toxic stresses. Previous studies have shown oxidative stress and calcium signaling to be important in radiation-induced bystander effects. The aim of the present study was to investigate …


Percutaneous Transhepatic Biliary Stenting, T U. Haq, M Sanaullah, H Mohsin, M Y. Sheikh, B Ahmed Sep 2001

Percutaneous Transhepatic Biliary Stenting, T U. Haq, M Sanaullah, H Mohsin, M Y. Sheikh, B Ahmed

Department of Radiology

Objective: Bilary stenting with endoprosthesis is a palliative procedure to relieve malignant biliary obstruction. Percutaneous transhepatic technique has been employed whenever endoscopic technique was not possible or had failed.SETTING: Angiography/intervention suite, department of radiology, Aga Khan University hospital, Karachi.Methods: We present retrospective analysis of 17 patients with malignant jaundice who were treated with percutaneous techniques after the endoscopic route had failed.Results: The success rate was 94% with placement of single plastic stent in 14 patients, double stents in 3 patients and self-expandable stent in one patient. The overall complication rate was 41% including sepsis, liver abscess, biloma formation, biliary leakage …


Department Of Radiology-Annual Executive Summary Report-July 1, 2000 To June 30, 2001, David C. Levin , M.D. Jan 2001

Department Of Radiology-Annual Executive Summary Report-July 1, 2000 To June 30, 2001, David C. Levin , M.D.

Department of Radiology Administrative Documents and Reports

101 page Department of Radiology Annual Executive Summary Report, July 1, 2000 to June 30, 2001, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.


Department Of Radiation Oncology And Kimmel Cancer Center, Thomas Jefferson University, The Intronic G13964c Variant In P53 Is Not A High-Risk Mutation In Familial Breast Cancer In Australia., Anna Marsh, Amanda B Spurdle, Bruce C Turner, Sian Fereday, Heather Thorne, Gulietta M Pupo, Graham J Mann, John L Hopper, Joseph F Sambrook, Georgia Chenevix-Trench Jan 2001

Department Of Radiation Oncology And Kimmel Cancer Center, Thomas Jefferson University, The Intronic G13964c Variant In P53 Is Not A High-Risk Mutation In Familial Breast Cancer In Australia., Anna Marsh, Amanda B Spurdle, Bruce C Turner, Sian Fereday, Heather Thorne, Gulietta M Pupo, Graham J Mann, John L Hopper, Joseph F Sambrook, Georgia Chenevix-Trench

Department of Radiation Oncology Faculty Papers

BACKGROUND: Mutations in BRCA1 and BRCA2 account for approximately 50% of breast cancer families with more than four affected cases, whereas exonic mutations in p53, PTEN, CHK2 and ATM may account for a very small proportion. It was recently reported that an intronic variant of p53--G13964C--occurred in three out of 42 (7.1%) 'hereditary' breast cancer patients, but not in any of 171 'sporadic' breast cancer control individuals (P = 0.0003). If this relatively frequent occurrence of G13964C in familial breast cancer and absence in control individuals were confirmed, then this would suggest that the G13964C variant plays a role in …


The Next Step, Benjamin Y. Dai, Lynn Thompson, John David N. Dionisio, Hooshang Kangarloo, Ricky K. Taira Apr 2000

The Next Step, Benjamin Y. Dai, Lynn Thompson, John David N. Dionisio, Hooshang Kangarloo, Ricky K. Taira

Computer Science Faculty Works

In traditional radiology practice, reports are typically dictated and then transcribed.? While the free-text reports represent the semantic knowledge interpreted and conveyed by a physician, the information can be hard to access. The advantages of representing medical data in a structured format using standard terminology are clearly recognized. These include the ability to implement a standardized electronic medical record, automatically invoke medical guidelines when appropriate, and conduct outcomes research. Standard structured reports facilitate intelligent indexing, searching, and retrieval of documents from clinical databases. Recent attempts have been made in the industry to enable structured data entry using preformatted templates, but …


Endovascular Embolization Of Traumatic Intracavernous Pseudoaneurysm Of Internal Carotid Artery, T U. Haq, S A. Khan, I H. Rizvi Mar 2000

Endovascular Embolization Of Traumatic Intracavernous Pseudoaneurysm Of Internal Carotid Artery, T U. Haq, S A. Khan, I H. Rizvi

Department of Radiology

No abstract provided.


Department Of Radiology-Annual Executive Summary Report-July 1, 1999 To June 30, 2000, David Levin, M.D. Jan 2000

Department Of Radiology-Annual Executive Summary Report-July 1, 1999 To June 30, 2000, David Levin, M.D.

Department of Radiology Administrative Documents and Reports

90 page Department of Radiology Annual Executive Summary Report, July 1, 1999 to June 30, 2000, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.


Ultrasonographic Renal Size In Individuals Without Known Renal Disease, Niels-Peter Buchholz, Farhat Abbas, Syed Raziuddin Biyabani, Qaiser Javed, Jamsheer Jehangir Talati, Masood Afzal, Imtiaz Rizvi Jan 2000

Ultrasonographic Renal Size In Individuals Without Known Renal Disease, Niels-Peter Buchholz, Farhat Abbas, Syed Raziuddin Biyabani, Qaiser Javed, Jamsheer Jehangir Talati, Masood Afzal, Imtiaz Rizvi

Section of Urology

Objective: In order to establish some preliminary data of our population, we determined the ultrasonographic kidney dimensions in individuals withoud known renal disease. We assessed whether age, sex, side, body mass index (BMI) and presence or absence of diabetes mellitus and hypertension affect the renal size.
Methods: Ultrasonographic kidney measurements were performed on 194 adult patients without known kidney lesions. Measurements included length, width, cortical thickness and estimation of renal size which was obtained by multiplying the first three variables. The effect of age, gender, side, height, weight, BNll, hypertension and diabetes mellitus was statistically analyzed.
Results: The mean kidney …


Teleradiology As A Foundation For An Enterprise-Wide Health Care Delivery System, John David N. Dionisio, Ricky K. Taira, Usha Sinha, David B. Johnson, Benjamin Y. Dai, Gregory H. Tashima, Stephen Blythe, Richard Johnson, Hooshang Kangarloo Jan 2000

Teleradiology As A Foundation For An Enterprise-Wide Health Care Delivery System, John David N. Dionisio, Ricky K. Taira, Usha Sinha, David B. Johnson, Benjamin Y. Dai, Gregory H. Tashima, Stephen Blythe, Richard Johnson, Hooshang Kangarloo

Computer Science Faculty Works

An effective, integrated telemedicine system has been developed that allows (a) teleconsultation between local primary health care providers (primary care physicians and general radiologists) and remote imaging subspecialists and (b) active patient participation related to his or her medical condition and patient education. The initial stage of system development was a traditional teleradiology consultation service between general radiologists and specialists; this established system was expanded to include primary care physicians and patients. The system was developed by using a well-defined process model, resulting in three integrated modules: a patient module, a primary health care provider module, and a specialist module. …


Spinal Cord Compression Caused By Metastatic Epithelial Myoepithelial Carcinoma Of The Parotid Gland, I N. Soomro, A S. Hussainy, K Chishti, M H. Pui, S A. Khan, R Ahmed, S H. Hasan Oct 1999

Spinal Cord Compression Caused By Metastatic Epithelial Myoepithelial Carcinoma Of The Parotid Gland, I N. Soomro, A S. Hussainy, K Chishti, M H. Pui, S A. Khan, R Ahmed, S H. Hasan

Department of Pathology and Laboratory Medicine

No abstract provided.


Department Of Radiology-Annual Executive Summary Report-July 1, 1998 To June 30, 1999, David C. Levin, M.D. Jan 1999

Department Of Radiology-Annual Executive Summary Report-July 1, 1998 To June 30, 1999, David C. Levin, M.D.

Department of Radiology Administrative Documents and Reports

102 page Department of Radiology Annual Executive Summary Report, July 1, 1998 to June 30, 1999, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.


Establishing Norms For A Mexican Group Using Ricketts, Steiner And Arnett Analyses, Mauricio Gonzalez Balut Sep 1998

Establishing Norms For A Mexican Group Using Ricketts, Steiner And Arnett Analyses, Mauricio Gonzalez Balut

Loma Linda University Electronic Theses, Dissertations & Projects

Most existing cephalometric analyses are based on norms for the Caucasian population. Therefore, they cannot be properly applied for Mexican or Hispanic patients. Ethnic variations in the normal positions of the maxilla and mandible influence and alter the diagnosis and treatment plan for each of the different type of malocclusions. Previous studies have addressed the difference between the Caucasian norms and the Hispanic norms, this indicates the variety of their skeletal, dental and facial features.

It is the purpose of this study to establish specific cephalometric standards for the native Mexican group, using the Steiner and Ricketts analyses along with …


The Relationship Of The Incisive Canal To Maxillary Median Diastema, Jeffery S. Corbett Sep 1998

The Relationship Of The Incisive Canal To Maxillary Median Diastema, Jeffery S. Corbett

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to assess the relationship between the incisive canal and maxillary median diastema, and to identify an imaging method capable of documenting the geometry and dimensions of the incisive canal. The sample consisted of 59 dry skulls, 26 of which had a maxillary median diastema ranging in size from 0.1 mm to 2.8 mm (mean 1.0 mm, SD = 0.7 mm). Each skull had all of the permanent maxillary teeth present from first molar to first molar and lacked any apparent non-orthodontic condition that could have caused the diastema. Diastema width and canal diameter were …


Prototype Internet Consultation System For Radiologists, Boris Kovalerchuk, James F. Ruiz, Evgenii Vityaev, Steven Fisher Aug 1998

Prototype Internet Consultation System For Radiologists, Boris Kovalerchuk, James F. Ruiz, Evgenii Vityaev, Steven Fisher

All Faculty Scholarship for the College of the Sciences

The overall purpose of this study is to develop a prototype radiological consultation system. We concentrate our work on prototype software environment for the system. The system provides a second diagnostic opinion based on similar cases, incorporating the experience of radiologists, their diagnostic rules and a database of previous cases. The system allows a radiologist to enter the description of a particular case using the lexicon such as BI-RADS of American College of Radiology and retrieve the second diagnostic opinion (probable diagnosis) for a given case. The system also allows a radiologist to get other important information too. These advances …


Department Of Radiology-Annual Report-July 1, 1997 To June 30, 1998, David C. Levin Jun 1998

Department Of Radiology-Annual Report-July 1, 1997 To June 30, 1998, David C. Levin

Department of Radiology Administrative Documents and Reports

Department of Radiology Annual Executive Summary Report, July 1, 1997 to June 30, 1998. Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States. 103 pages.


Method Of Discrete Orthogonal Basis Restoration, Edward B. Moody Jun 1998

Method Of Discrete Orthogonal Basis Restoration, Edward B. Moody

Radiology Faculty Patents

A method is described for utilizing discrete orthogonal basis to restore signal system, such as radio or sound waves and/or image system such as photographs or medical images that become distorted while being acquired, transmitted and/or received. The signal or image systems are of the linear type and may be represented by the equation [B] [o]= [i] wherein [o] is an original signal or image, [i] is a degraded signal or image and [B] is a system transfer function matrix. The method involves estimating a signal-to-noise ratio for a restored signal or image. Next, is the selecting of a set …


Primary Spinal T-Cell Rich B-Cell Lymphoma: A Case Report, Suhail Muzaffar Suhail Muzaffar, Irshad Nabi Soomro, Naila Kayani, Shahid Siddiqui, Yousuf A. Husein, Rashid Jooma May 1998

Primary Spinal T-Cell Rich B-Cell Lymphoma: A Case Report, Suhail Muzaffar Suhail Muzaffar, Irshad Nabi Soomro, Naila Kayani, Shahid Siddiqui, Yousuf A. Husein, Rashid Jooma

Department of Pathology and Laboratory Medicine

No abstract provided.


Percutaneous Nephrostomy: A Non-Operative Management Of Urinomas: 2 Case Reports, Tanveer-Ul-Haq, I H. Rizvi, Z A. Khan, A A. Khan Jan 1998

Percutaneous Nephrostomy: A Non-Operative Management Of Urinomas: 2 Case Reports, Tanveer-Ul-Haq, I H. Rizvi, Z A. Khan, A A. Khan

Department of Radiology

No abstract provided.


Reply, Y A. Husen, M U. Islam, I H. Rizvi Jan 1998

Reply, Y A. Husen, M U. Islam, I H. Rizvi

Department of Radiology

No abstract provided.


Non-Visualization Of Lung Markings Below Hemidiaphragm In Subtle Subpulmonic Effusion: An Old Sign Resuscitated, Y A. Husen, T R. Khalid, Z A. Khan, M Y. Sheikh Nov 1997

Non-Visualization Of Lung Markings Below Hemidiaphragm In Subtle Subpulmonic Effusion: An Old Sign Resuscitated, Y A. Husen, T R. Khalid, Z A. Khan, M Y. Sheikh

Department of Radiology

To assess the lack of visibility of vascular markings under the hemidiaphragm on a frontal chest radiograph as a sign of pleural effusion, fifteen patients were collected showing this sign. Pleural effusion was diagnosed by ultrasound, comparison with previous or subsequent chest x-ray or computed tomography. Patients in the study group exhibited this sign in the absence of the classical signs of pleural effusion. In the control group, lack of visibility of blood vessels was observed in only 4.2% cases. Non-visualization of vascular markings below the hemidiaphragm should alert the interpreter to the possible presence of pleural effusion and a …


A Cephalometric Study Of The Class Ii Correction Effects Of The Eureka Spring, Ernest L. Stromeyer Aug 1997

A Cephalometric Study Of The Class Ii Correction Effects Of The Eureka Spring, Ernest L. Stromeyer

Loma Linda University Electronic Theses, Dissertations & Projects

The effect of the Eureka Spring appliance, was investigated on 37 consecutively treated, non compliant, bilateral Class II malocclusions, requiring at least 3 mm or more of additional molar correction. The mean pretreatment age of this sample was 13.9 years. All patients were treated by a single clinician utilizing the Eureka Spring. Lateral cephalographs were taken at start of orthodontic treatment (T1), at insertion of Eureka Springs (T2), and at removal of the Eureka Springs (T3). The average treatment interval between T2 and T3 was 4 months. Class II correction occurred almost entirely by dentoalveolar movement, 33% in the maxilla …


A Pilot Study On The Short Term Effects Of The Herbst Appliance On The Glenoid Fossa, David A. Bennion Aug 1997

A Pilot Study On The Short Term Effects Of The Herbst Appliance On The Glenoid Fossa, David A. Bennion

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this pilot study was to evaluate the initial effects of the Herbst appliance and determine through the use of common cephalometric radiographs that were optically enhanced and then digitally reproduced, if fossa migration is taking place. Fourteen, (6 male, 8 female), growing patients were treated by the same clinician for the correction of a Class II malocclusion using a modified Herbst appliance. Pretreatment (T1) standard lateral cephalometric radiographs and post Herbst treatment (TH) optically enhanced lateral cephalometric radiographs were taken. All radiographs were digitally captured and reproduced so 6 linear and 1 area …


Department Of Radiology-Annual Report-July 1, 1996 To June 30, 1997, David C. Levin Jun 1997

Department Of Radiology-Annual Report-July 1, 1996 To June 30, 1997, David C. Levin

Department of Radiology Administrative Documents and Reports

Department of Radiology Annual Report, July 1, 1996 to June 30, 1997. Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States. 108 pages.


The Relationship Of Tooth Size And Arch Form To Arch Depth, Harold C. Avila Jun 1997

The Relationship Of Tooth Size And Arch Form To Arch Depth, Harold C. Avila

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to determine the relationship of arch form and tooth size to arch depth measurements of study models (Casts) and their respective lateral cephalometric radiographs (Radiographs) in a population of patients treated to an acceptable occlusion without extraction. One hundred and twenty casts were divided into three tooth size classes within each of four arch form categories. Results showed there was a statistically significant change in the arch depth measurement when tooth size was varied. There was no statistically significant change in the arch depth measurement when arch form was varied. The results showed greater …


Tuberculous Hepatic Artery Aneurysm: Multimodality Imaging, Y A. Husen, M U. Islam, I H. Rizvi May 1997

Tuberculous Hepatic Artery Aneurysm: Multimodality Imaging, Y A. Husen, M U. Islam, I H. Rizvi

Department of Radiology

No abstract provided.


Percutaneous Removal Of Biliary Stone From Anomalous Right Hepatic Duct, T Ul Haq, M Y. Sheikh, C K. Jadun, M N. Ahmad, Y H. Husen Mar 1997

Percutaneous Removal Of Biliary Stone From Anomalous Right Hepatic Duct, T Ul Haq, M Y. Sheikh, C K. Jadun, M N. Ahmad, Y H. Husen

Department of Radiology

No abstract provided.