HESI Practice Test 3 | 189 Questions and Answers with complete solution

midcoronal plane - Which body plane is positioned perpendicular to the IR on a lateral chest projection? 1/2 inch below the apex of the patella - Which is the correct CR location for an AP knee projection? image noise is increased - Opening the collimators wider than necessary using digital radiography has which effect on image quality? hand pronated with fingers flexed - How are the patient's hand and fingers positioned for a PA wrist projection? high LET radiation such as alpha particles - Biologic damage resulting from the ionization of key atoms causing these molecules to become inactive or functionally altered is much more likely to occur after exposure to which type of radiation? increase the amount of exposure to the IR - Which is the best way to avoid excessive quantum noise when using cassette-based digital systems? no dose may be considered completely safe - Which describes a linear, nonthreshold dose-response relationship? 15-20 degrees cephalad - How should the CR be angled to compensate for a patient who is unable to assume the erect lordotic position for an AP axial lordotic projection of the chest? wear a particulate respirator mask, gloves and gown - What precautions should a radiographer take when entering the room of a patient with varicella virus? image unsharpness decreases - Which effect does switching to the small focal spot size have on the manifest image?