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A paper on exposure to radiation
Radiation and its health effects
Radiation and its health effects
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Cancer is known to have a multidisciplinary approach. “Cancer, far more than any other disease entity, requires a multidisciplinary approach. This multidisciplinary approach to cancer involves the integration of treatment strategies specifically set forth by surgical oncologists, medical oncologists, and radiation oncologists” (Povoski, Stephen; Hall, Nathan, date, page). Each type of medical doctor, whether an oncologist or a radiologist, offers cancer patients different routes for treatment care. All of the treatments revolving around the oncological field require radiological involvement, hence clinical imaging. Clinical imaging involves radiation and the help from radiologists, doctors specializing in treating diseases through clinical …show more content…
I say this because radiology was discovered through ionizing and nonionizing radiation. At that time, ionizing radiation was considered an “electromagnetic radiation that has sufficiently high energy to remove electrons on interaction with specific atoms, thereby producing ionization in the substance through which it passes” (Oweida, Ayman); while “Nonionizing radiation cannot change the atomic structure of the materials with which it interacts.”(Oweida, Ayman) Through this discovery and the research embedded in ionizing and nonionizing radiation, Wilhelm Conrad Roentgen’s discovered the X-ray. However, the x-ray was not the only type of ionizing radiation that was found. Through the years, researchers discovered other types of radiological techniques through ionizing radiation. These techniques include: ultrasound imaging, MRI’s, nuclear Imaging, and many …show more content…
This image portrays the first radiological advancement produced and expanded to the medical field. I say this because the radiological discovery created what is today known as imaging tests and/or diagnostic tests. X-rays are known to create a clear bone/skeletal transparency of the human body. Through time X-rays as well as other radiological techniques progress into a more useful resource for professionals. Although the discovery of the different types of ionizing radiation was historical and life changing in the life of science, the high levels of energy within that radiation process was also harmful. Many people/Medical Doctors were unaware that by having X-rays tested on them, they were exposing themselves to radiations sickness and even worse, cancer. After radiology was known to be dangerous, physicians and nuclear energy workers researched and found better ways to prevent the human body from being affected by the radiation. Since then, radiology has guided practitioners when trying to determine the location from where the disease began and how much the disease has spread since its initial state. “Use of highly conformal radiotherapy techniques has heightened the need for image-based verification of treatment delivery on a more frequent basis than just the weekly portal images” (Clinic Radiation Oncology chapter 6. Radiation Oncology Physics Pg.137). Radiation oncology has served as a form of
the effective doses from diagnostic CT procedures are typically estimated to be in the range of 1 to 10 mSv. This range is not much less than the lowest doses of 5 to 20 mSv estimated to have been received by some of the Japanese survivors of the atomic bombs. These survivors, who are estimated to have experienced doses slightly larger than those encountered in CT, have demonstrated a small but increased radiation-related excess relative risk for
The role of the radiologist is one that has undergone numerous changes over the years and continues to evolve a rapid pace. Radiologists specialize in the diagnoses of disease through obtaining and interpreting medical images. There are a number of different devices and procedures at the disposal of a radiologist to aid him or her in these diagnoses’. Some images are obtained by using x-ray or other radioactive substances, others through the use of sound waves and the body’s natural magnetism. Another sector of radiology focuses on the treatment of certain diseases using radiation (RSNA). Due to vast clinical work and correlated studies, the radiologist may additionally sub-specialize in various areas. Some of these sub-specialties include breast imaging, cardiovascular, Computed Tomography (CT), diagnostic radiology, emergency, gastrointestinal, genitourinary, Magnetic Resonance Imaging (MRI), musculoskeletal, neuroradiology, nuclear medicine, pediatric radiology, radiobiology, and Ultrasound (Schenter). After spending a vast amount of time on research and going to internship at the hospital, I have come to realize that my passion in science has greatly intensified. Furthermore, both experiences helped to shape up my future goals more prominently than before, which is coupled with the fact that I have now established a profound interest in radiology, or rather nuclear medicine.
Cancer is a disease in which cells multiply out of control and gradually build a mass of tissue called a tumor. There has been a large amount of research dedicated to the treatment and cure of cancer. Several types of treatments have been developed. The following are just some of the major examples of cancer therapy: surgery, chemotherapy, radiation therapy, biologic therapy, biorhythms, unconventional treatments, and hyperthermia. Each type of treatment is discussed in detail below.
Radiology is one of the few so-called “physical-science”-based fields of medicine, making it a challenging and rewarding application of an academic interest in science. It combines advanced knowledge of human physiology with principles of atomic physics and nuclear decay, electricity and magnetism, and both organic and inorg...
As a starting point in CT diagnostic imaging the form of radiation used to provide an image are x-rays photons , this can also be called an external radiation dose which detect a pathological condition of an organ or tissue and therefore it is more organ specific. However the physics process can be described as the radiation passes through the body it is received by a detector and then integrated by a computer to obtain a cross-sectional image (axial). In this case the ability of a CT scanner is to create only axial two dimensional images using a mathematical algorithm for image reconstruction. In contrast in RNI the main property for producing a diagnostic image involves the administration of small amounts of radiotracers or usually called radiopharmaceutical drugs to the patient by injection or oral. Radio meaning the emitted of gamma rays and pharmaceutical represents the compound to which a nuclide is bounded or attached. Unlike CT has the ability to give information about the physiological function of a body system. The radiopharmaceutical often referred to as a nuclide has the ability to emit ga...
Radiation therapists work closely with patients to fight cancer. According to Health Care Careers, Oncologists, Dosimetrists and nurses are some of the professionals that a radiation therapist works with while caring for a cancer patient. This group of professionals will determine a specialized treatment plan. The first step usually includes a CT scan performed by a radiologist to find the exact area that needs to be targeted with x-rays. Next, the therapist uses a special machine that emits radiation called a Linear Accelerator. They use this machine during a treatment called external beam therapy. During this process, the Linear Accelerator will project x-rays at targeted cancer cells or tumors. Another therapist will be in a different room monitoring the patient’s viral signs until the procedure is over. The external therapy l...
To begin with, how has technology changed the field of radiology? Since the discovery of X-radiation there has been a need and desire for studying the human body and the diseases without actually any intervention. Over the past fifty years there has been a revolution in the field of radiology affecting medicine profoundly. “The ability to produce computers powerful enough to reconstruct accurate body images, yet small enough to fit comfortably in the radiology department, has been the major key to this progress”(Gerson 66). The core of radiology’s vast development consists of four diagnostic techniques: computed tomography (CT), digital subtraction angiography (DSA), ultrasonography, and magnetic resonance imaging (MRI). These methods of diagnostic imaging provide accurate information that was not seen before. Amid this information advancement, radiologists have broadened their role of diagnostician. Gerson writes, “With the advent of computer-enhanced imagery and new interventional techniques, these physicians are able to take an active part in performing therapeutic procedures”(66). A radiology breakthrough in 1972 was computed tomography discovered by Godfrey Hounsfield and Allan Cormack. Unlike standard radiography, computed tomography would spin the X-ray tube 360 degrees and inversely another 360 degrees while the patient ta...
When we hear, cancer treatment, our minds naturally shoot straight to chemotherapy. Chemotherapy is the most commonly used way to treat cancer. There is a saying that goes “Chemotherapy is an opponent itself simultaneously caring you and hurting you”. (Morasca, 2015). Cancer refers to the abnormal growth of cells which tend to proliferate in an uncontrolled way and in some cases, it spreads to other parts of the body. The main types of cancer treatment include: surgery, radiation therapy, immunotherapy, targeted therapy, hormone therapy, stem cell transplant, precision medicine, and chemotherapy.
Before MRI scans, X-rays were popular. However, X-rays use ionizing radiation that could be harmful to humans.
Radiologic Technologists use radiation to produce images of tissue, organs, and vessels that make up the body, as well as cancer, tumors, broken bones, and tumors (Cape Fear Community College). If a person is in the medical imaging field to become a Radiologic Technologist to help people, this part of the job is what grabs their attention, because as soon as they find these problems they omit the images to a doctor that helps take care of it. Radiologic Technologist is a branch of Health Science Cluster Diagnostic services pathway (OkCollegeStart). When a person’s knows where their career choice starts it helps get a better overview of where to start and helps get them where they want to be. Radiologic Technologists review and evaluate developed x-ray, videotape, or computer generated information to determine if images are “satisfactory for diagnostic purposes” (OkCollegeStart). Persons who are more technology driven are attracted to this career because of the technology a person gets to use and process. Radiologic
The X-ray was first invented by William Conrad Rontgen in 1895. He invented the x-ray by accident. He discovered an image from his cathode generator not knowing that it was an x-ray. Future investigation showed the rays were generated when the cathode ray beam on the inside of the vacuum tube, known as a radiograph. Lungs look black on an radiograph because the deal with air and air absorbs the least x-rays.
The history of Nuclear medicine has a lot of importance and made a significant improvement to today’s medicine. Nuclear medicine has made genetic therapy a success and improved the rate of surviving cancer a lot more likely than before. There is no real birthdate for nuclear medicine according to medical historians and this is due to Nuclear medicine multidisciplinary nature. However, there is a given approximate range of its birthdate, which was between 1934 and 1946. In 1934, the artificial radioactivity was discovered, and in 1946, radionuclides were produced by the Oak Ridge National Laboratory for medical use. Through this article, the following would be discussed; the achievements and great discoveries that helped evolve Nuclear Medicine, the important uses for Nuclear Medicine, and the growth and expansion of Nuclear Medicine outside North America.
Images can be enhanced by adjusting the brightness and contrast of an x-ray to get more clear image to identify lesions more clearly and easily. 2. Images can be stored digitally which saves space and perhaps the loss of images over years. 3. Less retakes of images which then causes less radiation to the patient and radiographer and less time consuming.
Before the discovery of X-rays in 1895, it was impossible to look inside human body, without causing harmful side effects. The famous quote of Anna Bertha Ludwig - “I have seen my death” is a testimony to this. In ancient times, the only way to study internal human organs was the dissection of dead bodies. Additionally, this was also subject to availability or religious beliefs. Leonardo da Vinci made 240 detailed sketches between 1510 and 1511, which were way ahead of their time. Unfortunately, it could not be published, except for a small amount in 1632. Images aide in visualization of illnesses (e.g. a malignant tumor), which are impossible to observe from outside of the body. A surgeon must know the various attributes of the tumor like location and size, before she can operate on it. Similarly an oncologist needs this information to decide the course of treatment e.g. tumor size and metabolic activity may be needed to determine the number of chemotherapy sessions. With images, all this information can be obtained without cutting open the patient. And what’s remarkable is that u...
Three-dimensional (3D) in-vitro cell culture is a system best in reflecting or mimicking the in vivo cancer cell behavior and its progression in cancer microenvironment (Gurski et al., 2010). As before, cancer research is depends on 2D model and the small animal test model to study on the tumor angiogenesis, invasion and metastasis (Godugu et al., 2013). However, animal model is not an ideal for long term and large scale research although it response with the more accurate tumor environment. Besides, 3D cell culture is beneficial over 2D cell culture system as 2D model unable to completely study on the cell-cell interaction during tumor progression as 3D model does. The removal of tiny piece animal or human cancerous tissue or obtained of the cell-line is required in the 3D model in which the tissue cell will interact with the organized matrix of 3D model and express the similar cell behavior (Godugu et al., 2013). 3D model also require precise considerations on the cell density, culture surface composition, culture medium used, supplements such as growth factor, pH, serum and oxygen in which all of these may affect the cell proliferation, differentiation, migration and apoptosis.