Questions for Thought Assignment Example | Topics and Well Written Essays - 500 words - 2

Questions for Thought - Assignment Example On the other hand, the waterfall method is a sequential design process. Completion of one stage usually leads to the next stage that has different goals. Agile methods allow an individual to make frequent changes to the management process and test the various stages of the project (Nayab 1). Change management is a vital process for IT professionals in many organizations. Every organization undergoes different forms of change. As the world of technology and business is changing it is paramount for organizations particularly the IT departments to conform to these changes. Change management is whereby the organization applies structured processes and tools for leading people during the change to achieve a particular outcome. Organization change management offers a framework upon which organizations can manage the changes in organization structure, new business processes, and cultural changes facing the company. Change management is beneficial particularly when the change requires all employees or people in the organization to learn new behaviors and skills. Organizations should set expectations, use tools to improve communication and reduce misinformation among employees to ensure they adapt to the change. Managing change is paramount for organizations that seek in the cor porate world (Fernandez and Rainey 168). There is a growing contention on whether organizations should develop their software packages of not. Several advantages are cited to support the development of personal software packages. However, before developing build in software packages, the company should assess the benefits of the software in relation to canned software packages. The â€Å"build versus buy† discussion is an important issue facing companies today. If building seems cheaper, it may be the best option rather than buying. Other benefits of building software packages include the ability to

Identify the artifacts produced on the images during CT scans Essay

Identify the artifacts produced on the images during CT scans. Describe the - Essay Example Several strategies have been developed to prevent artifacts. In this article, different artifacts in CT imaging and various techniques to prevent then will be elaborated. Different researchers have classified artifacts in different manner. While some experts have classified artifacts based on appearance, like ring artifacts, shading artifacts and streak artifacts (Goldman, 2007, 222), others have classified them based on the causes (Yazdi and Beaulieu, 2008, 135). In this articles, classification by Yazdi and Beaulieu (2008, 135) will be used. Patient-based artifacts occur because of some attributes in the body of the patients. The most common patient-based artifacts are metallic artifacts. These artifacts occur due to presence of irremovable metals in the body of the patient like hip prosthesis, dental filling, fracture fixation rods, cardiac prosthesis, chemotherapy ports and surgical clips. Metallic artifacts appear like streaks on images. They occur because of improper and inaccurate correction of beam hardening within the back projection that is filtered. As such, metals absorb photons heavily and cause overestimation of activity in the metallic region. This is the reason why patients are asked to remove all metallic objects in their body prior to entering the scan room. Several techniques have been developed to prevent on minimize metallic artifacts in CT images (Yazdi and Beaulieu, 2008, 136). One such strategy is to disregard data related to projections from metal objects and reconstruct image only based on projec tion data from non-corrupted regions. However, this method is very costly for regular scans and convergence problems occur frequently. Another strategy is to reconstruct images by manually identifying the missing projections and replacing them with non-missing projections of the surrounding areas. This method is known as projection-interpolation method. Other strategies to