Applications of Ultrasound in Medicine

Applications of Ultrasound in Medicine AB Assessment Using Waves Introduction Ultrasound is a sound wave with an oscillating pressure wave with frequencies ranging from 20 kHz until approximately 200 MHz. These frequencies are not audible to humans. Ultrasonic devices are used to detect objects and measure the distance between them. Ultrasound has been more frequently used in medical imaging displaying the patient an object in their body or just generally looking at their body. Ultrasound seemingly is becoming popular due to it not emitting any radiations unlike X-Rays. [6] Uses of Ultrasound Ultrasound is used in the medical department as a means of imaging, enabling medical staff to view the patients body without any major problems. The most common use of Ultrasound in the medical department is its use in what is called an â€Å"ultrasound scan†. This is used to project a moving image of a fetus inside a pregnant womans body. An example of this can be seen on the left. Ultrasound is not only used to detect unborn fetuses but also view several organs in the body through ‘prenatal scanning’: The same method used for an ultrasound scan. Since ultrasound easily reflect off soft tissue, gel needs to be added to the part of the body where the scan is going to be conducted. A transducer is then used to generate the ultrasound waves and detect any echoes it receives from the reflected waves. During the process of scanning the waves also erode pieces of gallstone which reside within our organs, with their constant vibrations.[6][7][12] Another use of Ultrasound is echo sounding. This is used by the quality control industry to detect flaws in pieces of metal. As an ultrasound wave is being passed through the metal, it will reach the defect area in the metal and the reflected wave that came of the defect area will be received by the transducer that emitted the wave. If there is more than one reflected wave it means the metal is defect. [7][12][13][15] â€Å"Ultrasound waves can be used by the industry for cleaning.†[12] The waves are sent through a fluid and bubbles formed from the vibration of the ultrasound remove dirt from an object. The object which is placed in water or another solvent has fluid collapse into the gap left behind from the solvent. The bubbles then move rapidly, removing the dirt and resulting in a transcending standard of cleanliness.[12][15] Dangers and Risks The dangers of Ultrasound are considerably low compared to other waves. Even though there is no major threat in using ultrasound it does have its risks which could harm the user. Excessive exposure to ultrasound waves of 120dB can lead to hearing loss. [6] Excessive exposure of ultrasound waves at 155dB will cause cavitation heating up the users body cells. [6] Excessive exposure to ultrasound waves of 180dB may lead to death. [6] Cavitation may cause the users cells to heat up and invoke toxic reactions. [23] Change in cells may cause Intestinal bleeding. [23] Damage to fetus’s brain may lead to left handedness. [23] Prenatal scans may cause early labour, premature birth, miscarriage and perinatal deaths. [23] Possible disabilities formed are: epilepsy, dyslexia and delayed speech development. [23] Ultrasound in Physiotherapy â€Å"The aim of physiotherapy is to help restore movement and normal body function in cases of illness, injury and disability.†. [1] Physiotherapy tries to cure disabled body functions from affected people. Ultrasound has found its way into this world, bringing it’s useful treatment methods with it. It’s used to treat deep tissue injuries, reduce pain from spasms as wells as inflammation and swellings, increase tissue extensibility, speed up metabolism, reduce nerve irritation, enhance drug delivery and speed up healing. Ultrasound stimulates the blood circulation and the activity of cells to assist in the therapeutics. [1] [3] The ultrasound frequency that is used for physiotherapy ranges between 0.7 and 3 MHz. [5] Gel is applied to the patients body to reduce friction with the transducer and aid the transmission of ultrasound waves. The waves are absorbed by ligaments, tendons and fascia and the therapeutics affect apply. [5] Advantages and Disadvantages Impacts Social Impact Hospitalized childbirth has gained a sudden rise since the 20th century. This is due to the improved hospital technology and successful childbirth probability. [16] Since ultrasound has been part of the hospitals technology, mothers have wanted to view a fetal scanning of their unborn child. This has been done multiple times, but society keeps questioning if ultrasound scanning is safe. The fact of being able to view your unborn child provides ultrasound a plus point to it’s beneficial use. It allowed parents to find out the gender of their child before delivery and detect any abnormalities that may occur during pregnancy. [16] Moral Impact The use of ultrasound in prenatal scanning seems to be that it affects the relationship between mother and fetus. The cultural communication is gone and what remains is communication through a computer screen displaying the fetus. The mother will then use what she sees instead of relying on her embodied knowledge. [17] Ultrasound brings imbalance to the moral standing of the victim through injurious damage to the victim. This raises the moral awareness of fetuses and if they should be exposed to the waves emitted, which can bring injurious damage. But this will then degrade the mothers moral standing as she also becomes a victim of the injurious damage ultrasound can bring. [17] Ethical Impact Ultrasound has been most commonly known for determining the gender of the fetus. Ultrasound is a cheap resource since all you need is a transducer and someone who can operate the device. In countries like China and India, parents exploit this method by checking the gender of their child and then deciding to abort it due to the countries preference of males. [18] In india there are 250,000 female feticide abortions each year. The government has been trying to motivate people into valuing female fetuses but the Economic and Social impacts have lead to the occurrence of this ethical issue. [18] Conclusion Ultrasound is a secure soundwave with a minor probability of great risks. Ultrasound has been proven to be beneficial and useful in most industries and is popular in the medical industry. It’s a method used in physiotherapy to speed up healing and to improve the overall therapeutics. Although it has contrasting advantages and disadvantages, and is not worth recommending it should not discourage anyone from using ultrasound waves. Bibliography [1] Physiotherapy How It Works . Physiotherapy. N.p., n.d. Web. 07 May 2014. http://www.nhs.uk/Conditions/Physiotherapy/Pages/How-does-it-work.aspx>. [2] Rheumatology. Therapeutic Ultrasound in Soft Tissue Lesions. N.p., n.d. Web. 7 May 2014. http://rheumatology.oxfordjournals.org/content/40/12/1331.full>. [3] Ultrasound in Physiotherapy. Ultrasound in Physiotherapy. N.p., n.d. Web. 7 May 2014. http://www.greatlakes-physiotherapy.com/physiotherapy-ultrasound.html>. [4] Does Ultrasound Work? SaveYourselfca RSS. N.p., n.d. Web. 7 May 2014. http://saveyourself.ca/articles/ultrasound.php>. [5] Wikipedia. Wikimedia Foundation, n.d. Web. 7 May 2014. http://en.wikipedia.org/wiki/Therapeutic_ultrasound#Physical_therapy>. [6] Ultrasound. Wikipedia. Wikimedia Foundation, n.d. Web. 7 May 2014. http://en.wikipedia.org/wiki/Ultrasound>. [7] Ultrasound. Pass My Exams. N.p., n.d. Web. 7 May 2014. http://www.passmyexams.co.uk/GCSE/physics/ultrasound.html>. [8] BBC News. BBC, n.d. Web. 7 May 2014. http://www.bbc.co.uk/schools/gcsebitesize/science/add_gateway_pre_2011/radiation/ultrasoundrev2.shtml>. [9] BBC News. BBC, n.d. Web. 7 May 2014. http://www.bbc.co.uk/schools/gcsebitesize/science/triple_aqa/medical_applications_physics/ultrasound/revision/1/>. [10] BBC News. BBC, n.d. Web. 7 May 2014. http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel_pre_2011/waves/soundultrasoundandseismicwavesrev2.shtml>. [11] BBC News. BBC, n.d. Web. 7 May 2014. http://www.bbc.co.uk/schools/gcsebitesize/science/add_ocr_gateway/radiation/ultrasoundrev3.shtml>. [12] Ultrasound. Ultrasound. N.p., n.d. Web. 7 May 2014. http://www.cyberphysics.co.uk/topics/waves/ultrasound.htm>. [13] What Is Fetal Imaging and Pre-Natal Scanning? What Are the Uses of Ultrasound? N.p., n.d. Web. 7 May 2014. http://www.gcsescience.com/pwav14.htm>. [14] Uses of Sound Waves. GCSE Physics Uses of Waves Revision. N.p., n.d. Web. 7 May 2014. http://www.s-cool.co.uk/gcse/physics/uses-of-waves/revise-it/uses-of-sound-waves>. [15] Ultrasound. Revision World. N.p., n.d. Web. 7 May 2014. http://www.revisionworld.com/gcse-revision/physics/waves/ultrasound>. [16] Ultrasound Technology and Its Social Impact. Yahoo Contributor Network. N.p., n.d. Web. 7 May 2014. http://voices.yahoo.com/ultrasound-technology-its-social-impact-6812902.html>. [17] Ultrasounds Risk: Reproductive Autonomy and Epistemic Moral Injury.[emailprotected]. N.p., n.d. Web. 7 May 2014. http://ir.lib.uwo.ca/iaph/June27/Presentations/5/>. [18] Female Feticide ethical Issues of Ultrasound in India and China. Why Is American Health Care so Expensive? N.p., n.d. Web. 7 May 2014. http://whyisamericanhealthcaresoexpensive.blogspot.co.at/2013/03/female-feticide-ethical-issues-of.html>. [19] BCF Technology. Economic Benefits of Ultrasound. N.p., n.d. Web. 7 May 2014. http://www.international.bcftechnology.com/learning/farm-animal/clinical-resources/economic-benefits-of-ultrasound> [20] Benefits of the Use of Ultrasound in Physical Therapy. LIVESTRONG.COM. LIVESTRONG.COM, 7 July 2010. Web. 7 May 2014. http://www.livestrong.com/article/172706-benefits-of-the-use-of-ultrasound-in-physical-therapy/>. [21] Ultrasound Therapy. For Treatment of Sports Injuries. N.p., n.d. Web. 7 May 2014. http://www.sportsinjuryclinic.net/treatments-therapies/electrotherapy/ultrasound-therapy>. [22] Powers, Julie. Risks From Ultrasound Therapy. EHow. Demand Media, 29 Oct. 2009. Web. 7 May 2014. http://www.ehow.com/about_5589797_risks-ultrasound-therapy.html>. [23] Hall, Harriet. Are Prenatal Ultrasounds Dangerous? Science-Based Medicine. N.p., 30 Aug. 2011. Web. 9 May 2014. http://www.sciencebasedmedicine.org/are-prenatal-ultrasounds-dangerous/>.

Meg Whitman – Ceo Ebay

Transactional leadership involves motivating and directing followers primarily through appealing to their own self-interest (Hellriegel, D. , & Slocum, J. W, Jr. 2009). In this case Meg Whitman’s leadership reflects transaction leadership through the focus on basic management process of controlling, organizing and short-term planning. Hellriegel and Slocum mentions Whitman craves for statistics and for bottom line results. Employees are cheerful and informal but are consistent in Whitman’s transactional leadership in planning, systems, numbers, and results. Whitman’s primary component of transactional leadership is viewed by prompting her employees at eBay to achieve their performance goals. Through these attributes Whitman believe this is one reason why eBay has been so successful (Hellriegel, D. , & Slocum, J. W, Jr. 2009). Authentic Leadership Authentic leadership refers to individuals who (1) know and understand themselves (2) know what they believe and value, and (3) act on their values and beliefs through open and honest communications with subordinates and others (Hellriegel, D. , & Slocum, J. W, Jr. 2009). The aspects of Whitman’s leadership that reflects authentic leadership is that she builds credibility and win the respect of her employees by encouraging and respecting diverse viewpoints. Whitman is described as a person with experience and discipline and not to be stereotype of a new economy executive. Whitman has learned that since she has been as eBay she has become a better leader, manger, and executive than when she arrived as a youngster (Hellriegel, D. , & Slocum, J. W, Jr. 2009). Whitman has provided a number of insights and perspectives on her leadership. Bay’s goal is to be the world’s most compelling commerce platform on the Internet. In meeting their goals and eBay’s goals, Whitman wants her employees to continue attracting more customers, expand the goods traded on the site, spread eBay to more global markets, making the user experience more fun, exciting, and easier, and acquiring Internet companies to become a full service retailer (Hellrie gel, D. , & Slocum, J. W, Jr. 2009). Under the authentic leadership Whitman has empowered and motivated eBay’s employees to trust and follow her leadership style. Transformational Leadership. Transformational leadership involves anticipating future trends inspiring followers to understand and embrace a new vision of possibilities, developing others to be leaders or better leaders and building organization or groups into a community of challenged and rewarded leaders (Hellriegel, D. , & Slocum, J. W, Jr. 2009). Transformational leadership style reflected in Whitman’s leadership through individualized consideration and intellectual stimulation. Individualized consideration is the degree to which the leader attends to followers’ needs, acts as a mentor or coach, and listens to followers’ concern (Hellriegel, D. & Slocum, J. W, Jr. 2009). Whitman shows individualized consideration when she decided to change course when one of her managers became ill on a business trip. She attended to her employee needs by staying by his side while he was in the ambulance on the way to the hospital until he was stabilized. Intellectual stimula tion is the degree to which the leader challenges assumptions, take risks and solicits followers’ ideas (Hellriegel, D. , & Slocum, J. W, Jr. 2009). Whitman’s transformational leadership style encourages her employees to â€Å"think outside the box† by being innovative. Meyers (2005) reference to Whitman leadership style is one who keeps a steady hand on the tiller rather than gripping and pulling hard on the levers of power. That means subtly steering an influencing relationship instead of controlling them to generate financial returns. For example, Whitman working from a cube and not from a corner office or conversing and not commanding her employees. Getting the employees to ask questions, as opposed to providing them with answers, and sharing what they have learned. Finally, understanding that the bottom line success often stems from experimenting and failing or from doing nothing when bold action seems desperately needed (Meyers, 2005). Whitman used her leadership skills to transform the company from an online auction house into a general purpose shopping destination. Her experience and discipline created a platform for global online market place where everybody’s chance to succeed is equal and to stay focused on the same goals (Hellriegel, D. , & Slocum, J. W, Jr. 2009). Bay’s goal of being the first people to turn to when they want to buy anything. eBay owns no inventory and warehouse which helps make it highly profitable. It has cleverly used email, message boards, and its virtual community to forge bonds with customers. A key element to eBay’s growth is the continuous expansion of their market place and new services to communicate around the world (Hellriegel, D. , & Slocum, J. W, Jr. 2009). eBay Employees Employees at eBay respond to Whitman’s leadership style in a positive way. Employees are cheerful and informal (Hellriegel, D. & Slocum, J. W, Jr. 2009). The employees are dedicated and goal driven they don’t talk about fun and games but about plans, systems, numbers, and results. Hellriegel and Slocum mentions one of Whitman’s managers stated: â€Å"I have numbers. I know them. They’re very clear. And the expectations are high† (2009, pg. 316). The employees of eBay also value Whitman’s opinion when the managers are struggle in making decisions. For example, the managers went to Whitman the CEO to make the financial decision on not selling certain Nazi memorabilia. The employees seem to enjoy working under Whitman’s leadership style. One of Whitman’s employee stated: â€Å"She will exert herself personally, far and above the call of duty. She makes you want to the right thing† (Hellriegel, D. , & Slocum, J. W, Jr. 2009). Whitman looks for ways to encourage the contributions and development of her employees. Whitman’s leadership qualities have lead eBay to great success and the global trading platform where anyone can trade practically anything.

The Death of Julius Caesar, a Great Leader - 1034 Words

Julius Caesar was a great leader of Rome. Not only did he lead a very strong army, but his people also loved him. The debate is always should he have been killed or should he have lived and lead us to more victories. The first document that was used in the debate is a primary source. It’s called De Vita Caesarum, Divus Iulius. The document is a biography of Julius Caesar and his life. Suetonius wrote the biography. Suetonius was a roman historian who wrote about the Roman Empire. It was written in 110 CE. It was written to show the side of the senators, and how they felt about having emperors. It is trustworthy because Suetonius used eyewitnesses and other evidence from books to provide a lot of information about Caesar. The only thing that I think is missing is the side of Caesar because he wrote it from the perspective of the senators’ view. Which puts Caesar in a bad light because the senators did not like Caesar. Considering that the article was written based off of the senators, it put Caesar in a bad light. Meaning that this author did not want Caesar to live. Another document that was used was a secondary source. It was an article written in the Britannica Student Encyclopedi a. It was written for the public to read and understand Julius Caesar. It was used to give a brief overview of Julius Caesar’s life. It talked about him as a person, the civil war that he was involved with, the march he lead, as well as his reputation. The article is moderately trustworthyShow MoreRelatedWhy Augustus Caesar was a Better Ruler than Julius Caesar652 Words   |  3 Pagesgreatest leaders of Rome are without a doubt Julius Caesar and Augustus Caesar. These two men have defined leadership for a country. Many other countries have modeled their ethics and used them as their own to better themselves as a whole. Without these two men, our world would not be the same in just about every way. 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Article Review Is Google Making Us Stupid By Nicholas Carr

Technology is quickly becoming a huge part of day to day life for nearly everyone. If you walk around most places, you will see a large percent of people either on their cell phones, on their computers, or using some other electronic device. While some of it is being used for business and other important things, most of the time, it is more for entertainment. It is because of this that people claim that technology is changing the way people think today. In his article â€Å"Is Google making us stupid†, Nicholas Carr argues that people have become dependent upon the internet for information rather than having to work to figure it out. In the article â€Å"Does texting effect writing†, Michaela Cullington argues that people’s texting is effecting the way people write because people don’t show emotion when texting, so that is translating back into their writing. Both arguments are effective, both appeal to emotion, but the more effective argument is Carrâ₠¬â„¢s because it is a more sound argument based on logic and credibility. One of the biggest differences in the two articles is the credibility of the two authors. Carr is a proven writer having written for the New York Times, Wall Street Journal, and has also written many blogs in his time. He has also published many writings of his own prior to writing this article. Based on all of that evidence, Carr is a very credible source, whereas Cullington on the other hand, is a very inexperienced writer. At the time when she wrote thisShow MoreRelatedIs Google Making Us Stupid?1040 Words   |  5 PagesAuthor Nicholas Carr poses the question â€Å"Is Google Making Us Stupid?† This has set off a debate on the effects the internet is having on our brains. Obviously the internet is here to stay, but is it making us scatterbrained? Are we losing the ability to think deeply? Criticism of the Web most often questions whether we are becoming more superficial and scattered in our thinking . In the July-August 2008 Atlantic magazine, Nicholas Carr published Is Google Making Us Stupid? (http://www.theatlanticRead MoreIs Google Making Us Stupid?920 Words   |  4 Pagesthe internet. We can either let the unreliable reviews take our attention away from the internet or let it contribute to the way we learn. While the false reports haven’t had much negative effects on usage, Nicholas Carr offers a different perspective than that of Manuel Castells. In â€Å"Is Google Making Us Stupid?† Carr believes the Internet has taken the foundation out of learning, socializing and reading. Coupled with Manuel Castells, Nicholas Carr agrees that the Internet has been of good use inRead More`` Is Google Making Us Stupid?1505 Words   |  7 Pagesthat technology is indeed changing the way we think. Among the members contributing to this conversation, two strikingly different outlooks on how these changes will affect the future exist. Either we should be terrified, or worr ying is premature. Articles written by experts specializing in psychology and the brain, such as Pinker’s â€Å"Mind Over Mass Media,† as well as How Has the Internet Reshaped Human Cognition? by Kee and Loh, as well as and finally â€Å"Children, Wired- for Better and for Worse† byRead MoreCarrs Argument in Vital Paths1823 Words   |  8 Pagesplausible. Carr introduces the argument for neurological flexibility with the tangible effects noted by Nietzsche, where the use of the mechanical typewriter changed Nietzsches writing style and choice of words. Following Nietzsche, Carr discusses the conceptualization of neurological flexibility through the examples of Freud, J.Z. Young, and William James. Freud, J.Z. Young, and William James, each theorized a brain which could be changed, in time periods when such theories were absurd. Carr thenRead MoreThe Impact Of Technological Innervation On The Way People Act And Think On A Daily Basis876 Words   |  4 PagesNicholas Carr, a technology, culture and economics writer, examines the impact technological innervation has on the way people act and think on a daily basis. His recent difficulties concentrating while reading books and lengthy articles has led him to believe that his time spent online may be contributing to his lacking concentration and contemplation skills. By prefacing his argument with anecdotes from his friends and acquaintances, he is convinced that a new type of reading and interpreting isRead MoreIs Google Making Us Stupid? Essay1400 Words   |  6 PagesIs Google Making Us Stupid? Is an article that exemplifies rhetoric expertise. The writer of the article, Nicholas Carr, is well known for his writing regarding the tech industry. Before understanding the author’s approach, the reader must understand the author’s background. What authority do they have to write about this subject? In this case, I’ll deliver my own knowledge of his background. Carr is a scholar writer who has written for the Harvard Business Review, various essays covering techRead MorePositive And Negative Effects Of Technology1600 Words   |  7 Pagestoday’s world through their work. Many authors have very different views on the topic, some such as Ann Woo and Vannear Bush argue that technology is a positive addition to our society, where othe r influential individuals such as Neal Gabler, Nicholas Carr, and Charlie Brooker each argue that technology is having a negative influence on our society and will in the future have a continued negative effect on our society for copious reasons. However, technology in my opinion with my experience as aRead MoreNegative Effects Of Technology On The Brain Essay1465 Words   |  6 Pagesincreased in usage within many ways and has caused successful changes in a person’s lively routine. However, technology has evolved since the very beginning which concern has grown over the negative effects of its excessive use. Nicholas Carr’s article â€Å"Is Google Making Us Stupid† addresses the tendency of technology to create a sort of mental laziness where people look for instant answers rather than thinking for themselves. Daphne Bavelier, C. Shawn Green, and Matthew W.G. Dye have written in â€Å"ChildrenRead MoreGoogle Makes People Smarter?1723 Words   |  7 PagesGoo gle Makes People Smarter People are adapting, and changing their approach of how they seek knowledge: From hours, and hours of researching in the library to find information, to a five-second research on the internet with a click of a button? In an ever-changing world, humans are evolving with the ease of technology. The google search engine allows the users to search anything with the tip of their fingers. The World Wide Web has billions of website with information. People can search anythingRead MoreInternet Vs Knowledge1441 Words   |  6 Pagesdisagree like Nicholas Carr that believes we are all being spoon-fed and are not absorbing information in the right way. In his article â€Å"Is Google Making Us Stupid† he describes how our critical thinking skills and attention spans are degrading the process of our mental capacities and internet is reprogramming us become more robotics. Although, he does not see a positive side on the internet he recognizes the research that take days that collects infor mation can now be done in minutes. Carr says â€Å"I think