Nobody downloaded yet

RF Burns - causes and prevention - Assignment Example

Comments (0) Cite this document
Radiofrequency Burns – Causes and Prevention Introduction Magnetic Resonance imaging is a medical imaging technique used to visualize the body’s internal structures. MRIs have three types of magnetic field. First, is a large superconducting magnet producing the main magnetic field; second is the Radio Frequency field (RF); and third are the gradient magnets…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER92.7% of users find it useful
RF Burns - causes and prevention
Read TextPreview

Extract of sample "RF Burns - causes and prevention"

Download file to see previous pages This study is being carried out in order to establish guidelines in the use and application of radiofrequency, mostly in terms of its safety and prevention of injuries. Body Causes 1. Heating of implants An RF pulse would often be transmitted by the MRI to stimulate protons through energy exchange. The pulse is an electromagnetic wave coming from the RF coils (Lin, 2008). RF power during MR scans are changed into heat within the tissue of the patient due to resistive losses (Eising, 2010). This absorption of energy is specifically considered the SAR (Specific Absorption Rate). The specific effects of heating during MR scanning and burns usually refer to conductive implants and normal tissue. Most studies discuss the impact of conductive wires, including pacemaker cables, ECG cables, and metallic stents (Eising, 2010). Issues in the use of aneurysm clips in the brain, cochlear implants, implanted spinal cord stimulator, metallic implants, and metal fragments in one or both eyes can also cause burns (Premier Diagnostic Center, n.d). Based on an experimental study by Nakamura et al. (2001), 55-235 volts could be induced with the RF irradiation in a metallic loop placed inside the bore of a 0.5-T scanner. A resistor which was inserted sparked and then burned out (Nakamura et al., 2001). This was seen only with the axis of loops being parallel to the linearly polarized transmitting field. For cables, heatings at 20 degrees Celsius, 26 Celsius, and 63.5 Celsius have been assessed. Assessments indicate that the heating of the ECG cable is known to cause fire. Small implants can lead to issues with the heating of skin seen in tattooed patients caused by the heating of metallic elements of the ink used for the tattoo (Klitscher et al., 2010). Implants (, n.d.) Some reports on excessive heating or burns have also been seen for iron-based oxide tattoos and transdermal patches added with metal elements; these patches may include testosterone, nicotine, and clonidine patches (Tope and Shellock, 2002). Tattoos using ferromagnetic compounds can cause react to the MRI machine (Ross and Metava, 2011). In general, the image would somehow appear distorted following the MRI; however, the injuries usually represent burns on the patient’s skin. As such, any redness or apparent injury on the skin has to be managed medically (Ross and Matava, 2011). As seen in the image below, the ferromagnetic compounds of the tattoo caused the RF burns, mostly manifesting as burns and redness on the patient’s skin on the site of the tattoo. Tattoo with ferromagnetic compounds following MRI (Melina, 2010) Currents may be triggered by two fields. The first is the pulsed magnetic-gradient field, and the second being the pulsed radiofrequency field (Jacob et al., 2010). These two fields increase their intensity over time and may eventually cause an electromotive force through a conductive loop. Heating will then come about from the current originating from the loop; with the amount of heating based on the resistance in the conductive processes (Dempsey and Condon, 2001). The pulsed magnetic field is triggered by a large coil which encompasses the coils and is often found near the patient to be scanned. The issue of excessive heating is based on the distance of the RF coil to the patient, ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“RF Burns - causes and prevention Assignment Example | Topics and Well Written Essays - 2000 words”, n.d.)
Retrieved from
(RF Burns - Causes and Prevention Assignment Example | Topics and Well Written Essays - 2000 Words)
“RF Burns - Causes and Prevention Assignment Example | Topics and Well Written Essays - 2000 Words”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF RF Burns - causes and prevention

Paediatric Burns

...water caused 50 % of the scalds. In most cases, the burns could have been prevented. A lapse in parental supervision and curiosity of a child are the two reasons quoted for the tragic incidents. Occasionally the child may not be able to get away from the burning substance Child abuse is another sad cause (Green, 2010). Children who are burnt have a tendency to suffer from post-traumatic stress disorder (Anjali et al, 2009). A study has revealed that young boys and children below 6 years are influenced by movies which exhibit flames and explosions in toys (Anjali et al, 2009). It was also noted that children below 6 had thinner skin making them prone to...
4 Pages(1000 words)Essay

Burns and Engineered Skin Grafts

...? Burns and engineered skin grafts Your al affiliation Skin is the largest organ in the body and is multifunctional as it provides immune defense, acts as a barrier to external insults and regulates heat and moisture exchange in the body. It also has sensory functions. Therefore, when injured through burns, timely healing and repair is needed to ensure patients’ survival. Healing is a dynamic process and in sometimes there is delay of onset of the process (Peng Liu et al, 2008). Older methods of burn management includes the use of autografts, allografts and xenografts and they have many limitations such as variable acceptance rates of grafts, vulnerability of the patient to infections ,...
4 Pages(1000 words)Research Paper

Prevention Strategies and Causes of Adolescent Substance Abuse Prevention Strategies

...? Prevention Strategies and Causes of Adolescent Substance Abuse Prevention Strategies Introduction Raising teenagers and being a teenager has proved to be quite a challenge due to the involved unique concerns and needs as argued by the Department of Health, DoH (2001). Among the social problems facing this category of people include substance abuse, also referred to as drug abuse which McKim (2003) defines as maladaptive pattern following consumption of a drug considered not to be dependent. These encompass psychoactive drugs and substances that alter one’s moods and cause impulsivity. Britain has widespread adolescent abuse of alcohol, tobacco and other illegal drugs...
6 Pages(1500 words)Essay

MRI Safety: RF Burns - Causes and Prevention

...? MRI Safety: RF BurnsCauses and Prevention Introduction Advances in the field of imaging technology have made magnetic resonance imaging (MRI), available to medical science. MRI is a powerful and versatile diagnostic tool, with the consequence of increasing popularity in its use. Developments in MRI technology have only added to increased application of MRI as a diagnostic tool across all kinds of patient populations. A vast majority of MRI examinations pass off without any untoward incident to the patients. However, the interaction of MRI technology with the human body cannot be deemed to be totally safe, with incidents of harm occurring in some cases of MRI examinations (Stokowski, 2005). Background Bio-effects of MRI refer... to the...
8 Pages(2000 words)Essay


... and blanching with pressure. The vascular permeability of the vessels also increases. Cells like platelets and leukocytes adhere to the vascular endothelium in the early phases of burns, followed by influx of polymorphonuclear leukocytes and monocytes. There after, new capillaries, immature fibroblasts and new collagen fibrils appear within the wound as a part of regeneration activity (Nettina 2006). Tissues damaged in burn 1. Skin being the largest organ in the body is the most commonly and widely affected part in the body. Burns causes loss of functions of the skin. The main functions of the skin are thermal regulation, prevention of loss of fluid from the body by evaporation, barrier against infections from the environment... degree...
8 Pages(2000 words)Essay

Airplane accidents causes and prevention

...Airplane Accidents- Causes and Prevention Introduction Since the U.S. aviation was not properly developed in the early 19th century because there was no rule applying on who should fly the plane and who should guarantee the passengers’ safety, there was great need for the federal government to make such regulations that would best cater to the security requirements of the civilians in order to gain public’s trust. Thus, to build new safety standards and maintain them to the highest level, an Act regarding aviation safety was passed on May 20, 1926. According to this Act, all aircraft should be properly checked and certified in order to be suitable for flight. The improved aviation operations enabled the...
5 Pages(1250 words)Research Paper


...Burns of Affiliation: Burns Burns contribute to a large percentage of accidental injuries and even deaths worldwide, coming only after motor vehicle/ pedestrian injuries and drowning. Even though certain cases of injury do not require hospitalization, severe burn injuries can usually lead substantive morbidity or even death in certain cases, making burn injuries a significant aspect of consideration especially on the care that such patients require. Burnt patients usually differ from other critically ill patients in a number of ways. For the most-effective care, burn patients usually require monitoring that concentrates on the...
1 Pages(250 words)Essay

Ursula burns

...Ursula Burns Born on 20Th September 1958 in Manhattan, Ursula grew up in a single parent family together with her two siblings (Baillie, Alice & Donna 143). Initially, life to her was extremely complicated but the single mother singlehandedly and with sheer determination managed to put her through private, which was a catholic institution. This was to get the best education she could and that will enable her thrive highly in life. Her mother during then managed to cater for her families needs by relying on proceeds from a day care facility together with ironing that comprised her main income jobs. At a young age, Burns exhibited unequaled interest and capability in mathematics thus prompting her to like...
6 Pages(1500 words)Essay

RF and Microwaves

...for the impedance above and this also was crucial generation of the smith chart at a frequency of 3.3 GHz. Figure 2: Smith chart Variation of the parameters of the set up, we are able to get the coefficient of reflection at a frequency range of 3-4 GHz. The parameters that are varied include the area of the free space, the length of the antenna and the number of turns in the set up. This resulted in the waveform below. Figure 5: Reflection co-efficient of spiral antenna The vector network analyzer (VNA) Use of the vector network analyzer (VNA) in the analysis of circuits is the most common measurement task in RF and micro waves. This instrument is versatile and can be used to evaluate almost all types of devices...
6 Pages(1500 words)Essay

Causes of Police Stress and Prevention Methods

...CAUSES OF POLICE STRESS AND PREVENTION METHODS Causes of police stress and prevention methods This is a proposal on a research that will determine the causes of stress among police officers and manners in which this kind of stress can be prevented. It starts with an introduction which asserts that the nature of police work make stress probable. The proposal then goes ahead and discusses the various studies that have been carried out on the causes of stress among police officers and the manner in which stress among police officers can be put under control. The literature review part introduces the kind of environment...
9 Pages(2250 words)Research Proposal
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Assignment on topic RF Burns - causes and prevention for FREE!

Contact Us