Radiation Essay

as the substrate thickness increases, surface waves and spurious feed radiation increase, which for practical designs limit the bandwidth. 2.8.2 Coaxial feed In this type, the inner conductor of the coaxial cable is attached to the patch while the outer conductor is connected to the ground plane. This is the widely used type of feeding. The coaxial probe feed is also easy to fabricate and match, and it has low spurious radiation. However, it also has narrow bandwidth and it is more difficult to model

The human body is a complex system that is composed of billions of cells, undergoing growth, division and death in an orderly fashion on a daily basis. When this process occurs in an abnormal manner, the outcome is typically referred to as a tumor. In today’s world, tumor is a term that is commonly heard throughout the world. Also referred to as neoplasm, a tumor is an abnormal growth of tissue resulting from the rapid cell division due to some form of mutation (Cooper). They are classified into

international consortium to develop MR-Linac technology, I believe that time spent within the Radiation Medicine Programme at Princess Margaret Cancer Centre will be useful as it has a dedicated 3T MRI unit on rails and would provide a unique opportunity to learn how to integrate MRI guided radiation therapy to improve outcomes for patients. STTARR (spatio-temporal targeting and amplification of radiation response programme) is the imaging centre associated with the Princess Margaret Cancer Centre

unit number 4 of the Chernobyl Nuclear Power Plant exploded, releasing mass amounts of potent radiation. A mass evacuation was conducted, moving hundreds of thousands of residents out of the area. The large amounts of radiation traveled into the atmosphere and over time made its way back to the surface, impacting the wildlife. Multiple studies have been conducted regarding specifically what impact the radiation has had on the local and international wildlife. These experiments were conducted in the CEZ

Chemotherapy and radiation both work be destroying rapidly growing cancer cells. Chemotherapy does this by sending medication throughout the entire body. Radiation therapy targets the cancer cells more directly, but is sometimes sent throughout the body as well. When it is, the radiation is more likely to make its way into the cancer cells without affecting other tissues. Unfortunately, these treatments

help restore immune response against melanoma cells. Radiation treatments utilizes high-energy (x-rays) to murder cancer cells. External beam radiation therapy, a type of radiation treatment, is used to treat melanoma by pointing radiation to the body from a source outside the body. Changes in skin color, hair loss, fatigue, and nausea are side effect of the procedure. If a loved one or I were to be diagnosed with melanoma, I would choose radiation therapy because it is a strong treatment to get rid

investigate the relationship between target/filter combinations, kilovoltage (kV), radiation dose and image quality using a mammographic phantom which is currently used for the quality assurance programme in the breast imaging department. Digital x-ray technologies

shape of tears drop is implemented with good radiation directivity and frequency response. A dual spiral antenna for ultra wideband capsule endoscope system is implemented. The capsule endoscope system transmits the image data of internal human body to an external receiver wirelessly. This system contains sensors, a tiny camera, LEDs, a wireless IC transceiver and antenna and these are encased in small capsule. The antenna has omni directional radiation pattern to

A cross-sectional anatomy is the representation of an organ’s slices of the patient for a given plane of section; the sagittal, coronal or transverse planes. According to Madden (2008), the sectional anatomy images are the organ’s slices obtained for acquiring the details of the anatomical organ and the nearby structures. Due to the some limitations of the conventional x-ray modality that is provides the 2D images of grayscale anatomy structures and a small amount of diagnostic detail of the anatomy

Nuclear medicine, based on Merriam Webster dictionary, nuclear medicine is “a branch of medicine dealing with the use of radioactive materials in the diagnosis and treatment disease.” Providing doctors widespread information about the functions and structures of the body, it is quickly expanding to new heights. Even though the history of Nuclear Medicine is undetermined, News Medical historians, propose that it was discovered by Frédéric Joliot-Curie and Irène Joliot-Curie in the year of 1934.