Alcoholic Abuse Assignment Example | Topics and Well Written Essays - 2750 words

Alcoholic Abuse - Assignment Example to "hold their liquor" better than those without such history. Experts suggest some people may inherit a lack of those warning signals that ordinarily make people stop drinking. Research suggest this factor may contribute between 40 per cent and 60 per cent of alcoholism cases related to genetic factors. (alcoholism). Alcoholism in parents increase the risk for violent behaviour and abuse toward their children. Children of alcoholics tend to do worse academically than others. I will be using the Wisconsin Psychometric test as a measuring tool to test this hypothesis on my targeted sample of Children of alcoholic parents, against children of parents who are not alcoholics. I will be using the statistical package for the social sciences (SPSS) for inputting my collected data, which will do the correlations, multicollinearity, and hypothesis. I will assess the incidence of depression, anxiety, stress, self-esteem and criminality, of those who are the off spring of alcoholic parents against those who are not. The kind of clear-cut model of the genetic sources of alcoholism perceived by the public and presented in the public tracts does not accurately reflect the state of knowledge in this area. No persuasive genetic mechanism has been proposed to account for accumulated data about alcoholic behaviour, social differences in alcoholism rates or the unfolding of the disease. Biological findings about the offspring of alcoholics have been inconsistent and grounds exist to challenge the notion of an enhanced genetic liability for alcoholism thathas been accepted wisdom for the last decade. Genuine attempts to forge data and theory into genetic models have been limited to men... Abrams and Niura ed (xx), Closing in on Addiction New Findings suggest a biochemical common ground, Social and Biological Theories in a combined Model, National Clearing House For Alcohol and Drug Information. Retrieved on line on March 4, 2006; from Niolon, Richard, Closing In on Addiction New Findings Suggest a Biochemical Common Ground, National Clearinghouse for Alcohol and Drug Information Retrieved on line on March 2, 2006 from www.psychpage.com/problems/library/alcohol,html

Identify the artifacts produced on the images during CT scans.describe Essay

Identify the artifacts produced on the images during CT scans.describe the method used to reduce or remove these artifacts - Essay Example ion, movement of patients during the scanning process or presence of metals on the body, problems with the scanner or during the reconstruction process (Barrett & Keat, 2004). The various types of artifacts and the methods used for reducing their occurrence are discussed below. The most common physics-based artifact is beam hardening which is caused due to differential absorption of low and high energy photons of an x-ray beam as it passes through an object. Such beam hardening phenomena can give rise to cupping and streaking or dark band artifacts. Cupping artifacts arise when the x-rays passing through the middle portion of an object become hardened which causes a reduction in its attenuation rate resulting in an intense beam reaching the detector. Streaking is another common phenomenon where streaks or dark bands appear between two dense objects again due to the hardening effect. This is usually visualized in scans taken in bony regions (Barrett & Keat, 2004). The methods used to reduce artifacts due to beam hardening include filtration of low energy particles, calibration correction, and use of appropriate software algorithms to correct the hardening (Barrett & Keat, 2004; Huang, n.d; Petit et al, 2010). Presence of a heterogeneous tissue mix can result in a CT number that is an attenuation average of all tissue types which can in turn result in a partial volume artifact as bands or streaks. Presence of off-axis objects in the path of the x-ray beam can result in the appearance of shading artifacts in the scan image. Such artifacts can be avoided using thinner sections and image noise can be limited by combining thinner sections to form a thicker section (Barrett & Keat, 2004; Huang, n.d). This effect occurs in parts of the body where attenuation of the x-ray beam is greatest such as the shoulders and the hip. This results in low number of photons reaching the detector which causes noisy projections that are in turn magnified during the reconstruction