Computed tomography (CT) Board Review - Body CT: The Essentials

Computed tomography (CT) Board Review - Body CT: The Essentials Computed tomography (CT) is at the heart of every modern radiology department because of its: 1. speed 2. reliability 3. ability to separate overlapping structures - ANS: 1, 2, & 3 The primary interaction with the anode is excitation resulting in ___ radiation. - ANS: Infrared (heat) X-rays pass through the patient interacting with tissue by absorption or scattering, which results in a measured attenuation of the incident beam. - ANS: True Once the data has been acquired, the CT gantry rotation ___ and the computer renders the raw projection data as an image set. - ANS: Decelerates A sharpening kernel is commonly referred to as a ___ kernel used to accentuate fine pulmonary or osseous detail, but simultaneously increases noise. - ANS: Bone Numerous formats are available to store images, including: - ANS: a. JPEG b. GIF c. PNG Hodgkin lymphoma accounts for the majority of ___ lymphomas. - ANS: Thymic Carcinoid tumors arising in the thymus tend to be far more aggressive than their pulmonary counterparts, primarily as a result of high rates of local reoccurrence and: - ANS: Metastasis Ectopic parathyroid tissue is a __ cause of anterior mediastinal mass. - ANS: Rare The middle mediastinum is located between the anterior and posterior compartments and contains the: 1. heart 2. pericardium 3. trachea - ANS: 1, 2, & 3 ___ are the most common tumors of the peripheral nerves