Search In this Thesis
   Search In this Thesis  
العنوان
THEORETICAL MODELING AND VALIDATION OF
DIELECTRIC PROPERTIES OF CARTILAGE TISSUES IN THE
MICROWAVE FREQUENCY RANGE /
المؤلف
Khateeb، Ahmed Mohammad Ahmed.
هيئة الاعداد
باحث / أحمد محمد أحمد خطيب
مشرف / عمرو محمد رفعت
مشرف / طارق مصطفى سعيد
مناقش / طارق مصطفى سعيد
الموضوع
qrmak
تاريخ النشر
2022
عدد الصفحات
78 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة الكهربائية والالكترونية
تاريخ الإجازة
8/1/2022
مكان الإجازة
جامعة الفيوم - كلية الهندسة - الهندسة الكهربية
الفهرس
Only 14 pages are availabe for public view

from 80

from 80

Abstract

Based on the chemical composition and structure of its elements, this thesis
proposes a structural theoretical model of dielectric characteristics of cartilage
tissues at microwave. This is performed by applying mixing rules to effectively
combine the known properties of tissue substructures in order to get the effective
macroscopic properties of the medium. The offered approach involves multi-
scales, starting with microscopic scales and progressing to macroscopic qualities
after multiple scale-steps. The model's predictions match the data from existing
measurements in the literature. The model's sensitivity to input parameters has
been verified and analysed. The model will most likely be used in non-invasive
medical sensing, where it will be able to correlate response of dielectric to
pathological structural changes in tissue. theoretical model can also be used to
forecast dielectric characteristics for high frequency computational dosimetry, as
well as to better understand the fundamental mechanisms underlying macroscopic
dielectric behaviour in general.
For a variety of reasons, the advantage of dielectric characteristics of biological
tissues has piqued the curiosity of researchers. They offer physical measurements
that are strongly connected to the underlying chemical and microstructure
composition, and they can be utilised as markers for non-invasive diagnostics and
medical sensing. They may also be used for computational dosimetry of
electromagnetic waves or computational assessment of tissue propagation for
communication with biomedical devices. Spectroscopic measurements can
provide information on dielectric characteristics. As previously demonstrated,
dielectric characteristics of tissues can be theoretically estimated and replicated by
taking into account the tissue's material and microstructure composition, as well as
quasi-electrostatic field solutions. Theoretical models are independent of actual
spectroscopic observations and rely on correctly combining the known features of
many basic elements (which is known as"Mixing").
Keywords: Theoretical model, microwave detection, layered dielectrics,
dielectric permittivity measurements, Cartilage tissues, biological tissues,
Cole-Cole model, Mixing Rules, Complex Dielectric, reflection coefficient.