Throughout time, the modern-day medical applications have undergone many accomplishments. Nowadays there are many opportunities to receive information about human bodies, with that being said, medical imaging has created a more efficient practice. Over time, a variety of different medical imaging have been developed, however each have their own disadvantages and advantages. The ultrasound is a medical imaging application. Ultrasounds use high-frequency sound waves. From there, the ultrasound machine creates images from the sound waves. The sound waves allow people to view the structure and organs located in the body (Ultrasound: Medline). Many professionals use the ultrasounds to view many parts of the body, such as the heart, blood …show more content…
However majority of the time, ultrasounds are used during pregnancy. Doctors use ultrasounds to view the progress and health of the fetus. The return time of the waves allow people to understand and acknowledge the depth of the reflecting surface. Throughout the mid-century, the ultrasound was used for non-destructive testing of materials. Also, the ultrasound was used as diagnostic tools in 1942, it was used to locate brain tumors (Lecture). In 1950, the ultrasound was used for presenting 2D gray-scale images and in 1965, the ultrasound was used for real-time imaging (Lecture). A professional, technician/doctor moves a device, known as a transducer over a certain part of the patient’s body. The transducer then sends out sound waves, which eventually bounce off the tissues inside the body (Ultrasound: Medline). The transducer captures the waves …show more content…
Molecular imaging is a specific type of medical imaging which allows people to view detailed images of the activities occurring throughout the body at the molecular and cellular level (About Nuclear). This application enables physicians to view how the body is functioning and to measure the chemical and biological processes. Molecular imaging techniques use multiple types of light microscopes and a variety of “optical probes,” which are molecules that have been specifically labeled to emit light of various different wavelengths, that “contrast” the target cells of interest from other cells (Publications). This specific application is very easy to use. Molecular imaging is great for external areas of the body, however not for internal areas. Molecular imaging was made possible by the advances in molecular and cell biology techniques. Also, molecular imaging was first presented in the early 70’s, in nuclear medicine. However it was not until the mid 90’s that efforts were made to advance the technologies and to broaden the biological and molecular field (Publications). Overall, molecular imaging procedures are safe and painless! Molecular imaging is used to manage and diagnose the proper treatment for cancer, heart disease, brain disorders (such as Alzheimer’s and Parkinson’s disease), gastrointestinal disorders, lung disorders, bone disorders, kidney and thyroid disorders and much more (About
Stethoscope functionality generally has not changed over the past few decades evolving from the monaural hollowed out wooden tube first invented in the early 1800’s by Rene Laennec to the more familiar long multi tubular version, improved upon by George Cammann 50 years later, we so typically see today. The core components of a modern stethoscope are comprised of ear tips, binaural piece, tubing and a diaphragm with a bell on the back. The bell transmits low frequency waves all the way up to the ear pieces, while the diaphragm is designed to carry the higher frequency sound. The two fathers of the stethoscope left little room for improvement on the near perfect design for just over a century until a Harvard Medical School professor by the name of David Littmann turned the simple listening device into the versatile diagnostic tool resting around almost every health care professional’s neck today.
Johnston, J. (2012). Essentials of Radiographic Physics and Imaging. St Loius, Missouri: Elsevier Mosby Publishing.
Diagnostic medical sonography is a profession where sonographers direct high-frequency sound waves into a patient’s body through the use of specific equipment to diagnose or monitor a patient’s medical condition. As described by the Bureau of Labor Statistics, this examination is referred to as an ultrasound, sonogram, or echocardiogram. The high-frequency sound waves emitted from the handheld device, called a transducer, bounce back creating an echo and therefore produce an image that can be viewed on the sonographers computer screen. This image provides the sonographer and physician with an internal image of the patient’s body that will be used in the diagnosis. The most familiar use of ultrasound is used in monitoring pregnancies and is provided by obstetric and gynecologic sonographers, who also provide imaging of the female reproductive system. Other types of sonography include; abdominal sonography, breast sonography, musculoskeletal sonography, neurosonography and cardiovascular sonography. Due to the vast nature of uses in sonography, most professionals study one field that they choose to specialize in. Diagnostic medical sonography is a rapidly growing field because of the increase in medical advances. The area of Cleveland, Ohio has continued to rise in the medical field with great strides, providing better career prospects with the availability of numerous employment positions.
Ultrasound is sound waves that have a frequency above human audible. (Ultrasound Physics and Instrument 111). With a shorter wavelength than audible sound, these waves can be directed into a narrow beam that is used in imaging soft tissues. As with audible sound waves, ultrasound waves must have a medium in which to travel and are subject to interference. In addition, much like light rays, they can be reflected, refracted, and focused.
Do diagnostic Medical Sonographers actually help begin a new life? Yes, according to researchers they do help patients indicate any problems that there may be and what may be expected. This essay will talk about Diagnostic Medical Sonographers and everything it takes to become one and how to become successful as well as why they are important to our global community. Sonographer’s are also known as ultrasound Technicians, they are very important in the medical field because they help patients and physicians diagnose and treat diseases as well as other medical information. The following paragraphs will talk about the information of the Salary and also the Job Responsibilities. With the technicians continuously providing
Ultrasound Technicians are very valuable in the world of health care. Also known as Diagnostic Medical Sonographer, an Ultrasound Technician uses special machines and equipment that operates on sound waves to determine or diagnose medical problems for patients. There are specializations within this field in which some individuals explore. For instance, areas of specialization includes but not limited to; pregnancy, heart health, gynecology, and abdominal sonography. Although each specializing branch has its own distinctive function, they all involve probing the body to facilitate doctors with diagnoses.
He was the first to use a magnetic field gradient to vary the resonant frequencies of spinning atoms. Although his images were very difficult to produce, he had a variety - glass tubes, mouse thoracic cavity, and the first human body part - a finger!!
Magnetic Resonance Imaging (MRI) has been around since the 1930s. An MRI machine has a great purpose in the medical field. It is a radiology technique that uses magnetism, radio waves, and a computer to produce images of body structures, such as a patient’s head, chest, blood vessels, bones and joints, and much more. MRI machines help doctors figure out what is wrong with their patient's bodies. It allows doctors to take a closer look at a certain location and see things that other machines cannot see. By using this machine, it helps doctors figure out the problem faster and allows them to try and find a treatment or a cure.
Radiation has been successfully applied to addressing a great variety of global issues; arguably most importantly that of medicine. Medical uses of radiation commonly include modern diagnostic and treatment techniques such as X-rays, radionuclides and radiotherapy (International Atomic Energy Agency, 2004). In the context of X-rays, the use of radiation is most recognised in four individually focused treatments, the first of these being the Chest X-ray. This particular diagnostic examination is used to confirm patients as fit for surgery or else distinguish diseases of the lung such as emphysema, pneumonia and lung cancer (The American Association of Physics Teachers, 2007). The X-ray picture is able to be printed though the use of specialized X-ray machines. These machines work similarly to everyday cameras however, instead of using light with frequencies within the visible spectrum, the machines use electromagnetic waves with much higher frequencies which are consequently able to penetrate through thicker mediums. (howstuffworks, 2013)‘Barium Enema’ is an examination of the intestines in which a small amount of radioactive material (Barium) is inserted into the body; showing doctors even the smallest of blockages through the use of a screen. Cardiologists also use a form of X-ray (an angiogram) in order to detect blockages. This works in a very similar manner to that of the Barium Enema. Mammograms are used to diagnose abnormalities such as breast cancer and use X-ray imaging to do so. They are very useful to doctors and patients alike as they can detect the abnormalities sometimes almost two years before a given patient may notice any changes to their body.
Radioisotopes have helped create advanced imaging techniques. Beforehand, X rays could only provide so much information such as broken bones, abnormal growths, and locating foreign objects in the body. Now it is possible to obtain much more information from medical imaging. Not only can this advanced imaging give imaging of tiny structures in the body, but it can also provide details such as cancerous cells and damaged heart tissue from a heart...
When you take ultrasound waves and apply them to your patient’s skin, the sound waves that are transmitted from your transducer and into your patient’s tissue go through a series of changes. The sound waves can be reflected, refracted, scattered about and also attenuated.
Images of human anatomy have been around for more than 500 years now. From the sketches created by Leonardo da Vinci, to the modern day Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) scan, images have played a great role in medicine. Evolution in medical imaging brought together people from various disciplines such as Biology, Physics, Chemistry and Mathematics, a collaboration which has further contributed to healthcare as a whole. Modern day imaging improves medical workflows by facilitating a non-invasive insight into human body, accurate and timely diagnostics, and persistence of an analysis.
Produced sound from speakers has become so common and integrated in our daily lives it is often taken for granted. Living with inventions such as televisions, phones and radios, chances are you rarely ever have days with nothing but natural sounds. Yet, few people know the physics involved in the technology that allows us to listen to music in our living room although the band is miles away. This article will investigate and explain the physics and mechanism behind loudspeakers – both electromagnetic and electrostatic.
Frequencies associated with relaxation phenomena fall within the range of ultrasonic therefore can be easily focused.
“Sound or acoustic energy involves the actual vibration of the actual material through which it passes and thus, in general, propagates best through solids and liquids, less well in gasses and not at all in a vacuum” (Wright et al., 1995, p. 70)