StudentShare solutions
Triangle menu

1. Identify the artifacts produced on the images during CT scans. Describe the - Essay Example

Nobody downloaded yet

Extract of sample
1. Identify the artifacts produced on the images during CT scans. Describe the

measurements are consistent, so any error of measurement will usually reflect itself as an error in the reconstructed image (Barrett, and Keat, 2004, 1680). Artifacts have a major role to play in diagnostic accuracy because their presence can degrade the quality of image of computed tomography or CT scan. In this article, various types of CT artifacts and strategies to avoid or minimize them will be discussed.
Based on their appearance, there are several categories of CT artifacts and they are shading artifacts, streak artifacts,ring artifacts (Goldman, 2007, 222), distortion (Barrett, and Keat, 2004, 1680), slab artifacts, step artifacts and blurring artifacts (Siemens, 2).
Beam hardening effects is the most common shading artifact. they are due to imperfect correction of beam hardening and occur in almost all CT images. They appear as "nonuniformities in the CT numbers of a uniform material, such as CT numbers that are lower at the center of a uniform phantom than at the periphery" (Goldman, 2007, 222). The nonuniformities are most of the time less than 5HU and usually unapparent unless viewed through a narrow window. larger hardening occurs if the scan is passing through a contrast medium or thick bone regions. Shading artifacts can also occur due to scattering. But scattering is uncommon in recent scanners.
Streak artifacts are very common and are encountered in almost all scanners. they occur mainly due to bad detector measurements or inconsistent measurements. Such inconsistencies occur due to metals, partial volume effects, motion, insufficient intensity of X-ray and malfunctioning of the tube arc (Goldman, 2007, 222). (Goldman, 2007, 222).
Ring artifacts or partial ring or arc artifacts occur due to drift in calibration, errors, measurement inaccuracies and imbalances. The current generation CT scanners have corrective algorithms and are able to detect inaccuracies in measurements (Goldman, 2007, 222).
Metallic artifacts ...Show more


In other words, artifact is “any systematic discrepancy between the CT numbers in the reconstructed image and the true attenuation…
Author : ethelynhayes
Save Your Time for More Important Things
Let us write or edit the essay on your topic
"1. Identify the artifacts produced on the images during CT scans. Describe the"
with a personal 20% discount.
Grab the best paper

Check these samples - they also fit your topic

Cultural Artifacts
Cultural artifacts are a vital part of humanities deep rooted in anthropology, ethnology and sociology. It comprises of the things created by human beings who enlighten us about the culture of the creator and the user. It encompasses all spheres of life including arts and literature, architecture, laws, religion even economics and way of living.
4 pages (1000 words) Essay
CT scans to detect lung cancer
The principal researchers of this research were The article was published Dr. Henschke and Dr. Yankelevitz. The financing was revealed by chance during review of tax records. Research pertaining to lung cancer cannot be funded by tobacco company because of potential bias.
2 pages (500 words) Essay
The aim of this research project is to critically review the literature on best practice Magnetic Resonance Imaging ('MRI')
Since its implementation into health care settings in the late 1980s, the focus on MRI safety has dramatically increased. This project provides a critical review on best practice MRI safety protocol. The project presents results of a review of peer review literature which is pertinent to MRI safety.
20 pages (5000 words) Essay
Learning Review.Review the placement and academic learning. Identify and reflect upon two pieces of learning about social work practice and link them to the module teaching provided. 2- Describe how your understanding of ADP/AOP has developed during
Clients endure the incapacitating consequences of such life conditions. The human suffering and despairs encountered by social workers nowadays are
8 pages (2000 words) Essay
Routine CT scanning protocols
These strategies include lowering tube voltage (kVp), tube current-time product (mAs), pitch, individualization of scanning parameters by using automatic exposure
13 pages (3250 words) Essay
Identify the artifacts produced on the images during CT scans.describe the method used to reduce or remove these artifacts
Presence of an artifact compromises the quality of the image generated from the scan, thus making it difficult to use the image as a diagnostic tool (Barrett & Keat, 2004). There are several ways by which artifacts originate which include processes involving CT data
4 pages (1000 words) Essay
Identify the artifacts produced on the images during CT scans. Describe the
T scan is not the original image and is actually a reconstruction one developed from several measurements by independent detectors (Barrett, and Keat, 2004, 1680). Artifacts thus affect the quality of imaging and the value of diagnosis. Radiologists must detect CT artifacts
6 pages (1500 words) Essay
L’Oreal, the French world leader in cosmetics, is one of the best cases of the channel and brand image consistency. This has led to
2 pages (500 words) Essay
The decision to use only one of the primary colors, that is black, the author somehow minimized the costs, as when people look at the body of the image. He used minimal black color in his paintings and light intensity too which was also equally low. In this way,
5 pages (1250 words) Essay
Different Generations of X-ray CT
The X-ray tube would rotate as the patient is moved around the scan field. The x-ray tubes had the highest power than prior generations.
1 pages (250 words) Essay
Hire a pro to write
a paper under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
Comments (0)
Click to create a comment
Let us find you another Essay on topic 1. Identify the artifacts produced on the images during CT scans. Describe the for FREE!
Contact us:
Contact Us Now
  • About StudentShare

  • Testimonials

  • FAQ

  • Blog

  • Free Essays
  • New Essays
  • Essays

  • The Newest Essay Topics
Join us:
Contact Us