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.

Homemade Ultrasound Phantom - Essay Example

Comments (0)
Summary
The author of this essay "Homemade ultrasound phantom" casts light on the peculiarities of the US phantom construction. Admittedly, there are numerous physical principles of US to consider however, there are some basic principles that US assumes…
Download full paper
GRAB THE BEST PAPER

Extract of sample
Homemade Ultrasound Phantom

Download file to see previous pages... Traditionally TMM’s of agar gel combined with graphite has been utilized as it possesses a speed of sound of 1540m/s and similar attenuation coefficients to soft tissues (Goldstein, 2000 and Dudley et al 2002). However, graphite/agar TMM’s tend to have a limit to its productive life as the gel tends to deteriorate. To overcome this problem other materials have been tested namely evaporated milk and urethane rubber. The study by Goldstein (200) suggests that although urethane rubber phantoms have a long useful life (in comparison to agar gel) their acoustic velocities are much lower than 1540m/s and concludes that such phantoms should not be used to check distance measurement accuracies of transducers or focusing performance in a clinical setting. On the other hand, Dudely et al (2002) highlight the point that all TMM’s cannot be reliable when utilized to predict clinical focusing performance because real tissues are inhomogeneous and not truly represented. Hoskins et al (2003) support this by reminding us that the soft tissue velocities vary around the mean value of 1540m/s approximately five percent which can lead to distortions in measurements of an image.A number of reasons for electing a TMM will come into play and may involve availability, durability, and expense. Whichever TMM is adopted the tissue mimicking phantom will still aim to test certain parameters of the performance of the system. Some of these include sensitivity, dead space, resolution, and calibration (Gent 1997)....
Phantom can be means of achieving this. Additionally basic physical principles and imperfections need to be considered when constructing the phantom itself. Phantoms Gent (1997) characterizes an US phantom as a device that permits qualification and testing of the various aspects of an US system performance and transducer. Furthermore phantoms are able to demonstrate limitations and artifacts of the equipment (Gent 1997). Test phantoms play a fundamental role in quality control and performance testing. Browne et al (2002) suggest phantoms should be tissue mimicking however, the literature provides a number of phantom types. These include fluid filled phantoms, thin film test objects with digital scatters (Phillips and Parker 1998) and digital image analysis converters (Zdero et al 2002). It is beyond the scope of this assignment to discuss the merits and drawbacks of each individual test object therefore expansion on the most commonly used phantom- tissue equivalent/tissue mimicking phantoms (Browne et al 2002) will be discussed. This is the type of phantom which will attempt to be constructed. Tissue mimicking phantoms should possess certain characteristics namely; 1) Similar scattering properties and echogenicity often compared to that of the liver. 2) Equivalent attenuation co-efficient to soft tissue (Gent, 1997) 3) Comparative acoustic velocity to the speed of sound in soft tissues, 1540m/s (Browne et al 2002). Numerous mediums can be utilized in order to achieve such properties which are often referred to as tissue mimicking materials. Tissue-Mimicking Materials Traditionally TMM’s of agar gel combined with graphite has been utilized as it possesses a speed of sound of 1540m/s and similar ...Download file to see next pagesRead More
Comments (0)
Click to create a comment
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Wine Making Essay
Wine making. Today, I will break a common misconception that wine has to be bought, because only professional wineries can make it. In reality, it is relatively easy to produce wine, provided that you have the right materials and enough patience. In fact, home winemaking is an American tradition.
4 Pages(1000 words)Essay
Sensation and Perception
This sensation is experienced by approximately 60-80% of all amputees with the majority experiencing phantom pain. Other than limbs, phantom pains and other sensations also occur for other amputated parts of the body. These may include the eyes, breasts, teeth etc.
5 Pages(1250 words)Essay
Phantom Limb Sensations
According to the latest research these sensations are now regarded, as reality, having solid grounds to exist i.e., the mind. The sensations are developed by the support given to them by the mind. "Another classic explanation for phantom limb placed the root of ghostly sensation at the severed sensory neurons themselves.
5 Pages(1250 words)Essay
Effectiveness of Mirror Box Therapy on Phantom Limb Pain

According to the paper, it has long been acknowledged that multiple sensory stimuli contribute to the conscious awareness of the body. Those who have limb amputation will have abnormal body awareness. Many studies have been undertaken to evaluate the effects of mirrorbox therapy as a model of neuro-rehabilitation.

13 Pages(2250 words)Essay
The main uses of Ultrasound in an imaging department and a vascular department
Most of the ultrasound examinations are done through a sonar devise placed outside the body while other examinations involve placing a devise inside the body. Many researches have taken place in order to fully gain the advantages of ultrasound in imaging department. According
5 Pages(1250 words)Essay
A review of the current state of 3D & 4D ultrasound
Consequently, because of how different its properties were compared to other diagnostic agents, the information obtainable through its use usually turns out to be unique. Diagnostic ultrasound,
20 Pages(5000 words)Essay
Risks associated with ultrasound procedure

Ultrasonic imaging involves mechanical energy, in which pressure waves pass through tissue. An image is formed by the reflection and dispersing back to the transducer. It involves heating of tissues due to the absorption of ultrasonic waves by the tissues. Some heat is also generated at the surface of the transducer.

7 Pages(1750 words)Essay
Phantom Limb
Most of the sensations are often very painful. This is because the phantom limb often seems to be distorted, shorter and out of position. The Phantom Limb
2 Pages(500 words)Essay
Phantom of the opera
As Christine started to get known, she falls in love with Vicomte, with no prior knowledge that the Phantom was in love with him. This brings about some twists in the movie. In this paper, comparison and contrast between the play and the movie shall be made in relation the
2 Pages(500 words)Essay
Select a Film and Analyze Relationships in the Film
This will involve answering the questions: How do they develop? How do the characters use language and nonverbal communication to develop relationships? How do the characters work to come together
4 Pages(1000 words)Essay
Let us find you another Essay on topic Homemade Ultrasound Phantom for FREE!
Contact us:
+16312120006
Contact Us Now
FREE Mobile Apps:
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us