NURS 5355 Mid-Term Exam Questions with Correct Answers | Grade A

Does conventional x-ray assess for intracranial abnormalities? Ans: No. Conventional x-ray does not have a significant role in assessing for intracranial abnormalities What does contrast do? Ans: Emphasizes certain structures by blocking x-rays. Appears white on imaging. What are indications for a CT Brain? Ans: Acute stroke/CVA or acute and severe headache with suspicion of ICH or head trauma. Order non-contrasted CT Brain. What can appear white on a non-contrasted CT Brain? Ans: Bone, blood, or metallic foreign body. When would you NOT give contrast? 2 Ans: Contrast allergy or renal failure. DO NOT give contrast if creatinine is greater than 1.5 mg/dL (can cause acute tubular necrosis) What is the brain window? Ans: Brain window is used to assess densities that are close to the average density of brain soft tissue. "Windowing"-the process for which CT imaging is manipulated on a gray scale based on certain numbers to change or enhance the appearance of the image to highlight specific features. Brain window has limited info on bone structures. What is the bone window?