Radiology Commons^™

Implementation Of Gy-Eq For Deterministic Effects Limitation In Shield Design, John W. Wilson, Myung-Hee Y. Kim, Giovanni De Angelis, Francis A. Cucinotta, Nobuaki Yoshizawa, Francis F. Badavi

Mathematics & Statistics Faculty Publications

The NCRP has recently defined RBE values and a new quantity (Gy-Eq) for use in estimation of deterministic effects in space shielding and operations. The NCRP's RBE for neutrons is left ambiguous and not fully defined. In the present report we will suggest a complete definition of neutron RBE consistent with the NCRP recommendations and evaluate attenuation properties of deterministic effects (Gy-Eq) in comparison with other dosimetric quantities.

View Box Case--12 Osteomyelitis, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

View Box Case-11 Synovial Osteochondromatosis With Osteoarthrosis, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

View Box Case--9 Bronchiectasis, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

View Box Case-8 Ilio-Cecal Tuberculosis, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

Comparative Methods Of Measurement To Evaluate Onplant Assisted Anchorage, Marc Reid Larson

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to compare the two-dimensional cephalometric and the three-dimensional tomographic radiographic methods in their ability to assess anatomic measurements while using the Onplant anchoring device in anterior retraction cases.

The Onplant was surgically placed beneath the periosteum of the hard palate. After osseointegration the Onplant was then uncovered and attached to the first molars by means of a transpalatal bar. Conventional orthodontic treatment was then used to retract the anterior teeth after 1^st premolars were extracted.

To evaluate the movement of the Onplant, a three-dimensional measuring tool was needed. Seven different measurements were made …

Linder-Aronson S Analysis Using Rhinomanometry And Newtom, Noel Moser

Loma Linda University Electronic Theses, Dissertations & Projects

Investigations into the effects of airway patency on craniofacial development are essential to ensure that interceptive orthodontic treatment provides the maximum benefit to the patient. The aims of this study were to (1) compare the size of the nasopharyngeal airway space on lateral cephalometric and 3D volumetric radiographs to determine if volumetric scans can be of greater diagnostic value than a lateral cephalometric film in determining the degree of airway blockage or patency and (2) to examine the correlation between functional airway resistance, as evaluated by rhinomanometry, and radiographic constriction due to nasal turbinate and adenoid size.

Twenty-eight subjects from …

View Box Case--7 Salter-Harris Type-Ii Fracture, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

Modular Machine Learning Methods For Computer-Aided Diagnosis Of Breast Cancer, Mia Kathleen Markey '94

Doctoral Dissertations

The purpose of this study was to improve breast cancer diagnosis by reducing the number of benign biopsies performed. To this end, we investigated modular and ensemble systems of machine learning methods for computer-aided diagnosis (CAD) of breast cancer. A modular system partitions the input space into smaller domains, each of which is handled by a local model. An ensemble system uses multiple models for the same cases and combines the models' predictions.

Five supervised machine learning techniques (LDA, SVM, BP-ANN, CBR, CART) were trained to predict the biopsy outcome from mammographic findings (BIRADS™) and patient age based on a …

View Box Case--6 Giant Cell Tumor, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

View Box Case--4 Left Sided Tuberculous Autonephrectomy, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

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

Department of Radiology

No abstract provided.

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--2 Mid-Colic Intussusception, I Masroor, R Hashmi

Department of Radiology

No abstract provided.

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 …

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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