RDGY10120 Technology 1 UCD Assignment Sample Ireland
RDGY10120 Technology 1 is a course offered at Many universities. The course is often required for students studying to become Registered dietitians.
The purpose of the course is to provide students with the foundational knowledge necessary to understand how food and nutrition impact human health. Students learn about the role of food in disease prevention, as well as how to counsel patients on healthy eating habits.
Topics covered in the course include macronutrients, micronutrients, dietary guidelines, food allergies and intolerances, weight management, and eating disorders. Upon completion of the course, students should be able to apply their knowledge to create healthy diets for individuals of all ages and lifestyles.
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There are many types of assignments given to students like individual assignments, group-based assignments, reports, case studies, final year projects, skills demonstrations, learner records, and other solutions given by us. We also provide Group Project Presentations for Irish students.
We’ll talk about some tasks in this course. These are:
Assignment Task 1: Understand the basic principles of electricity and heat and how these are applied in general radiography.
Radiography is the study of X-rays and their medical applications. The basic principles of electricity and heat are applied in radiography in order to produce clear diagnostic images. In order to understand how radiography works, it is first necessary to understand how X-rays are produced.
X-rays are a type of electromagnetic radiation, which means they are made up of electric and magnetic fields that travel through the air at the speed of light. When an X-ray machine is turned on, an electrical current is passed through a special pair of valves called an X-ray tube. This produces a beam of X-rays that passes through the body being examined and onto a film screen on the other side.
The X-rays that pass through the body interact with the tissues in different ways, depending on the density of the tissue. For example, X-rays will pass straight through soft tissues such as skin and fat but will be absorbed by denser tissues such as bones. This absorption creates an image of the inside of the body on the film screen.
Different body tissues absorb X-rays to different degrees, which is why it is possible to create images of specific parts of the body by using filters and other techniques. For example, a bone image can be created by using a filter that absorbs soft tissue but allows the bone to show up more clearly.
Assignment Task 2: Explain the concepts of X-ray production and interaction and describe how these impact image quality.
When an x-ray is produced, the energy of the beam is sufficient to cause the ejection of an electron from an atom. This process is called photoelectric emission. The ejected electron is called a primary electron.
A number of secondary electrons are then emitted by the atom. The number of secondary electrons emitted depends on the angle at which the x-ray beam hits the atom. If the angle is small, only a few secondary electrons will be emitted. If the angle is large, many secondary electrons will be emitted.
The quality of an x-ray image depends on how many secondary electrons are produced. A large number of secondary electrons produces a high-quality image while a small number produces a low-quality image.
The number of secondary electrons produced also depends on the energy of the x-ray beam. A higher energy x-ray beam produces more secondary electrons than a lower energy x-ray beam.
Assignment Task 3: Understand the beam spectrum and the effects of filtration.
Beam spectrum refers to the distribution of energy in a beam of photons. The shape of the spectrum can be affected by various factors, such as the type of material the beam is made up of, the wavelength of the photons, and the angle at which the beam is incident on a surface. The effects of filtration also play a role in shaping the spectrum.
Different materials will emit beams with different spectral shapes. For example, dioxide lasers typically emit Gaussian-shaped beams, while argon lasers tend to emit more tapered beams. The wavelength of the photons also affects the shape of the spectrum. In general, shorter wavelengths result in narrower spectra, while longer wavelengths lead to broader ones. For instance, ultraviolet light has a very narrow spectrum, while infrared light has a very broad one.
The angle at which the beam is incident on a surface also affects the shape of the spectrum. If the angle is small, only a few photons will be scattered, resulting in a sharp peak in the spectrum. If the angle is large, more photons will be scattered, leading to a more diffuse spectrum.
The effects of filtration also play a role in shaping the beam spectrum. For example, if a beam of light is passed through a blue filter, the resulting spectrum will be shifted towards the blue end of the spectrum. This is because the filter absorbs photons with wavelengths other than blue, leaving only the blue photons to pass through.
Different filters will have different effects on the shape of the spectrum. For instance, a low-pass filter will allow all photons with wavelengths below a certain cutoff to pass through, while a high-pass filter will only allow photons with wavelengths above the cutoff to pass through.
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Assignment Task 4: Describe the construction and functions of the X-ray tube, automatic exposure control device, and anti-scatter grids.
An X-ray tube is a device that produces X-rays, a type of ionizing radiation. The most common use for X-ray tubes is in medical imaging, where they are used to generate images of the human body. However, X-ray tubes are also used in a variety of other fields, such as security and industrial inspection.
X-ray tubes consist of three basic parts: an electron gun, a target, and a housing. The electron gun produces a beam of electrons which is then directed at the target. When the electrons hit the target, they cause it to emit X-rays. The housing protects the electron gun and target from damage due to the high temperatures generated by collisions between electrons and the target.
Automatic exposure control devices (AECs) are used to regulate the amount of X-radiation that is produced by an X-ray tube. AECs are important because they help to ensure that patients are not exposed to more radiation than is necessary. This helps to protect patients from the potentially harmful effects of ionizing radiation.
Anti-scatter grids are used to reduce the amount of scattered radiation that reaches the patient. Scattered radiation is a type of X-ray that has been deflected by the body tissues before reaching the image receptor. This can lead to artifacts in the image, so it is important to minimize the amount of scattered radiation that reaches the patient. Anti-scatter grids are placed between the patient and the X-ray tube, and they help to absorb scattered photons before they can reach the patient.
Assignment Task 5: Understand the fundamentals of the digital image.
A digital image is composed of a series of tiny squares, or pixels. The total number of pixels in an image is referred to as the resolution of the image. The higher the resolution, the more detailed the image will be.
Each pixel is assigned a color, depending on the RGB values for that pixel. Red, green, and blue are the three primary colors that make up all other colors. By combining different amounts of red, green, and blue light, any color can be created. This is why images on your computer screen are displayed in full color.
When an image is displayed on a computer screen or printed out, it is usually shown at a certain size. If you view an image at 100% on your screen, each pixel in the image will be the same size as one pixel on your screen. If you view an image at 50% on your screen, each pixel in the image will be half the size of one pixel on your screen.
The resolution of an image can also be increased or decreased by changing the number of pixels per inch (PPI). The PPI is a measure of how many pixels there are in one inch of the image. An image with a higher PPI will have more pixels in one inch than an image with a lower PPI. This means that the higher PPI image will be able to show more detail than the lower PPI image.
Assignment Task 6: Understand the basic principles of digital X-ray image capture devices.
Digital X-ray image capture devices use a digital sensor to convert X-rays into electrical signals. These signals are then processed by a computer to create an image.
Digital sensors are made up of an array of small pixels, each of which responds to the number of X-rays that strike it. The computer processes these signals to produce an image on a screen or monitor. The more pixels in the sensor, the higher the resolution of the image.
There are two main types of digital X-ray sensors: charge-coupled devices (CCDs) and flat-panel detectors (FPDs). CCDs have been used in consumer electronics for many years and are very well established. FPDs are a newer technology, but they are becoming more widely used in medical imaging due to their advantages over CCDs.
Digital X-ray image capture devices have many advantages over film-based X-ray systems. They provide better image quality, lower radiation doses to patients, and the ability to store and retrieve images electronically.
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