X-ray

To understand radiation safety, one must first be familiar with the term radiation. Simply put, radiation may be defined as energy traveling through space as waves or high speed particles. There are two types of radiation, ionizing and non-ionizing (e.g. Heat, visible light), they are differentiated by how they interact with matter. Non- ionizing radiation is essential to life, but excessive exposures can cause tissue damage. Ionizing radiation has sufficient energy to ionize atoms and…

periods, emission of radioactive particles into the atmosphere, and negative side effects from its many medical uses. Radioactive particles vary in strength, alpha particles, for example, are able to pass through sheet of paper. On the other hand, gamma rays are about to pass through solid lead (6 inches) or concrete (6 feet). By analyzing the human eye, scientists were able to develop a highly accurate system for identifying the age of a corpse. This method calls of the use of radioactive…

Computed Tomography A CT scan is produced using plenty of x-ray images from lots of different angles using computerized axial tomography (cat). It produces cross-sectional images or slices of bones, tissues and the angio portion which is produced through a CTA (cat scan angio) allows professionals to view the blood vessels. It is a great medical tool, with interesting history and of course like everything else in the worldwide medicine, it has its pros and cons. A Computed Tomography scan is a…

Kanamycin sulphate and rifampicin were purchased from Hangzhou Dayangchem Co., Ltd., Zhejiang, China. Acetonitrile and ethanol (High performance liquid chromatography, HPLC, grade) were purchased from Merck, Germany. Sodium dihydrogen phosphate, phenylisocyanate, triethylamine, orthophosphoric acid (analytical reagent grade) and silicone oil (viscosity 10 cSt) were purchased from Sigma–Aldrich, St. Louis, USA. Size 3 hard gelatin capsules were kindly donated by Capsugel Co., Ltd., Tokyo, Japan.…

Due to the exposure to an enhanced level of radiation, astronauts could experience about 1 mSv/day in deep space. It is equal to the radiation strength taking an x-ray every day. There would be two different consequences of the exposure to the space radiation, the acute consequences and the delayed consequence. The acute consequence is determined by the amount and the type of the radiation exposure, which would cause…

One example of a gastric emptying study is an operation that is done by nuclear medicine physicians using radioactive chemicals that examines how fast the food leaves the stomach and goes to the small intestine. Gastric emptying studies are used for checking patients who are experiencing signs of slow and, less commonly, rapid emptying of the stomach. Some signs to watch for are low energy levels, nausea, and heartburn. During a gastric emptying study, the patient eats a meal where the food in…

isotope of the artificially and it has many characteristics for nuclear medicine scan the first one it has a half-life of six hours and it decay by process called “ isomeric ” and emit low energy of gamma rays and this helps to easily exit the body and can be detected accurately also emit beta rays but without high energy radiation dose to the patient is low . It has different number of compounds created for various structures such as CNS imaging it use Tc-99 ECD , bone imaging it use Tc-99…

at elevated temperatures. The images in this paper were obtained by the detection of secondary electrons that were emitted by atoms excited by the primary electron beam. The primary beam scans in a raster fashion, making horizontal passes across the x-axis one at a time. This allows the detector to display the information into the image on pixel at a time in synchronized manner. The number of secondary electrons that can be detected…

An unexpected murder case has arrived again but this time it was in a different town next to Beverly Hills. that Laposha Brown was in. However this time it wasn't Daniel Grayson, since he died nearly over 6 years ago. Some say his soul still roams around town haunting everyone who ever had something to do with him. Laposha Brown is now currently living in secret with her son, Todd Grayson, for fear that her brother Tyler may find out her dirty little secret. Tyler is happy since he’s been out of…

Labradorite has such a mystical appearance, it can seem like such an ordinary looking rock but with just a slight tilt of your head, the most beautiful flashes of colourful light appear. It is no wonder that this mystical appearance has inspired legends and was used in healing potions by the Inuit people of Labrador. As a fashion accessory it’s grey/iridescent color makes it a great item to go with just about any attire. Labradorite Physical Properties What is Labradorite? Labradorite is…