Welcome to your Radiography Name: Email: [Image artifacts are usually classified as:] Scatter Plus or minus density Compton and photoelectric Patient motion and equipment motion None . [A reaction at the site of injection of iodinated contrast media may be caused by:] Extravasation of contrast agent Allergy to seafood Anaphylaxis Allergy to certain medications None . [In digital fluoroscopy, the image should be viewed on what device to take advantage of the digital capabilities?] Digital viewbox High-resolution monitor High-definition TV Plasma TV None . [For an AP projection of the elbow, which of the following statements are true? 1. The forearm and humerus should be at right angles 2. The central ray is directed perpendicular to the joint 3. The forearm and humerus should be parallel to the table 4. The hand must be pronated 5. The patient may have to lean laterally to ensure AP alignment] 1, 2 2, 3, 5 1, 4 2, 3, 4, 5 None . [The structure designated as III is the fig.] Head of the ulna Radial head Medial epicondyle Lateral epicondyle None Comment . [Which photon-tissue interaction produces radiation that may expose others in the room during fluoroscopy?] Compton Coherent Photoelectric Pair production None . [Marks on the focal track of the anode resulting from bombardment of electrons are called:] Melts Bullet marks Pitting Cracks None . [Bit depth is equal to:] 2n (n equals the number of bits) 4096 shades of gray Pixel pitch Bits times bytes None . [Radiographic contrast in computed radiography may be adjusted by changing the:] Window level Window width Area of the patient being irradiated Imaging plate None . [An ionization chamber circuit places:] A photomultiplier tube between the IR and the patient An ionization chamber beneath or behind the IR An ionization chamber between the patient and the x-ray tube An ionization chamber between the IR and the patient None . [What agency publishes radiation protection standards based on scientific research?] Nuclear Regulatory Commission (NRC) American Society of Radiologic Technologists (ASRT) National Council on Radiation Protection and Measurements (NCRP) Bureau of Radiological Health (BRH) None . [The filament circuit makes use of what type of transformer?] Step-up Autotransformer Step-down Falling load None . [Which of the following units would be used to describe the radiation present in a fluoroscopic room?] Bq Sv Gya Gyt None . [Which of the following is a graphical representation of pixel values?] Dynamic range Luminance Look-up table Histogram None . [As radiation strikes matter:] The energy of the rays is destroyed The energy of the rays is increased as they acquire the energy of the atoms The energy is transferred to the atoms according to the law of conservation of energy The energy is converted to matter according to Einstein’s theory None . [Photoelectric interaction occurs at what level in the atom?] L-shel K-shell M-shel Outer shell None . [When an AP oblique projection is performed for the cervical vertebrae, the central ray is directed:] 25 to 30 degrees cephalad 15 to 20 degrees caudad 5 to 10 degrees cephalad 15 to 20 degrees cephalad None . [The components of a grid are:] Pb strips and Pb interspacers Al strips and Pb interspacers Pb strips and Al interspacers Pb strips and cardboard interspacers None . [Structure F is the fig.] Surgical neck Semilunar notch Anatomic neck Greater tubercle None Comment . [Exposure linearity must be accurate to within:] 4 5% 2% of SID 10% None . [Factors that may cause the patient to react to a contrast agent simply as a result of anxiety are termed:] Local irritation Cardiovascular Anaphylactic Psychogenic None . [Image acquisition, image display, and image storage are the primary components of what system?] DICOM CR/DR PACS HIS None . [When a tangential projection of the patella is performed with the patient prone, the central ray should be angled:] 15 degrees cephalad 15 degrees caudad 25 degrees cephalad 45 degrees cephalad None . [Which of the following may result in occupational exposure for a radiographer?] Photoelectric interaction Compton interaction Coherent scatter Pair production None . [Radiation with a high LET:] Has low ionization Is highly ionizing Carries a low quality factor Equates with a low RBE None . [Structure A is the fig. ] Pedicle Spinous process Transverse process Lamina None Comment . [If SID is increased, what is the effect on IR exposure?] Increases Decreases No appreciable effect None . [If you suspect an object is contaminated, assume:] That it is contaminated That it should be used immediately That it is not contaminated, so as not to waste supplies That your hands must be sterilized None . [A patient history should be taken by the radiographer:] To assist the radiographer in understanding the patient’s injury and to assist the radiologist with interpretation of the images To verify patient name and form of payment Only on patients from the ED Only in the absence of the patient’s chart None . [The best way to keep the radiation dose to the patient low is:] Distance Shielding Time Avoidance of repeat exposures None . Time's up
