Quiz 43: Assisting With Diagnostic Imaging

The _____________ is a fluoroscopic examination of the esophagus, stomach, and duodenum, involving oral administration of barium sulfate as a contrast medium. A) CT scan B) MRI C) lower GI scan D) upper GI scan

The doughnut-shaped part of a CT scanner that surrounds the patient and gathers imaging data is called a A) gantry. B) contrast medium. C) transducer. D) table.

The _______________ is the fluoroscopic examination of the colon, usually involving rectal administration of barium sulfate as a contrast medium. A) CT scan B) MRI C) lower GI scan D) upper GI scan

A badge for monitoring the radiation exposure of personnel is called a A) gantry. B) dosimeter. C) transducer. D) roentgen.

The computed x-ray imaging technique that provides axial and three-dimensional scans is commonly called a(n) A) CT scan. B) MRI. C) sonogram. D) upper GI scan.

______________ is the direct observation of the x-ray image in motion. A) CT scan B) MRI C) IVU D) Fluoroscopy

__________ is an imaging method in which a magnetic field and radiofrequency pulses are used to create computer images of bones and soft tissue in multiple planes. A) CT scan B) Ultrasound C) MRI D) IVU

_______________ is an imaging method in which radioactive materials are injected into the body or ingested to provide information about the function of organs and tissues. A) Nuclear medicine B) Ultrasound C) MRI D) IVU

Which of the following terms means "toward the head"? A) Cephalic B) Inferior C) Caudal D) Posterior

Which medical term means "front" or "in front of"? A) Superior B) Inferior C) Anterior D) Posterior

The medical term meaning "toward the midline of the body" is A) medial. B) lateral. C) ventral. D) dorsal.

What medical term means "toward or nearest the trunk of the body"? A) Proximal B) Distal C) Superficial D) Deep

What word means "farther away" or "farthest from" the trunk or the point of origin of a body part? A) Proximal B) Distal C) Superficial D) Deep

What plane divides the body into two equal right and left halves? A) Midsagittal B) Frontal C) Transverse D) Crosswise

The plane that divides the body into anterior and posterior portions is the _____ plane. A) sagittal B) frontal C) midsagittal D) transverse

If the physician orders a plantar x-ray film, the technician would take an image of the A) palm of the hand. B) superior side of the foot. C) inferior aspect of the heel. D) sole of the foot.

Which statement is true of a UGI? A) It is performed with an iodine contrast medium. B) Patient prep includes the use of a cathartic. C) It is a fluoroscopic examination. D) It is an MRI procedure.

Diverticulosis may be diagnosed with which procedure? A) UGI B) LGI C) Abdominal sonography D) MRI with iodine dye

How would you explain an IVU procedure to a patient? A) It uses iodine as a contrast medium and aids in the diagnosis of kidney stones. B) No special patient prep is required. C) It is performed with an MRI machine. D) Iodine is used as a contrast medium, and the uterus is visualized.

Why is it important to ask patients scheduled for an IVP if they are allergic to shellfish? A) Food allergies can alter the results of certain diagnostic tests. B) Fish allergies are a contraindication when barium contrast material is used. C) Iodine creates a bitter taste in patients allergic to shellfish. D) Shellfish contain high levels of iodine, which is the contrast used in an IVP.

What is the most frequent concern of patients scheduled for CT studies? A) Exposure to x-rays B) Anxiety about entering the confined space of the tube C) Iodine allergies D) Magnetic pull on metal objects

You have a patient scheduled for an MRI. What should you include in the patient education? A) It cannot be done if the patient is allergic to iodine. B) The MRI uses advanced radiation technology to provide the physician with a multiple view of the area. C) A very loud tapping noise is heard throughout the procedure. D) The patient does not have to enter the machine, unlike with a CT scan.

Which statement is true about cell sensitivity to radiation exposure? A) Older cells are more sensitive than younger ones. B) Cells that divide and multiply rapidly are more sensitive than those that replicate slowly. C) Cells that have a slower metabolic rate are more sensitive. D) Highly complex cells are the most sensitive to radiation effects.

Which of the following cells are most sensitive to radiation exposure? A) Neurons B) Muscles C) Hepatocytes D) Epidermal cells

Which statement is true about the somatic effects of radiation exposure? A) The low doses associated with radiography produce long-term effects that may not be apparent for decades. B) X-ray exposure must be limited because of the immediate effects it can have. C) Somatic effects are a problem only for radiologists. D) Radiation exposure affects everyone in the same way.

You are concerned about the safety of working in a facility that performs x-ray studies on site. Which statement is true about your risk of radiation exposure as an employee in the facility? A) The x-ray room collects radiation over time. B) Scatter radiation is present at all times. C) The only time a radiation hazard exists is during the x-ray exposure itself. D) People consistently exposed to scatter radiation have a shortened life span.

Which of the following occurs when an x-ray strikes something and bounces in different directions? A) Primary radiation B) Secondary radiation C) Remnant radiation D) Scatter radiation

Which part(s) of a radiographic table is (are) called a "Bucky"? A) Cassette holder B) Grid C) Image receptor D) Both B and C

What is the electrical control setting that determines the penetrating power and speed of the x-ray beam? A) Milliamperage B) Kilovoltage C) Exposure time D) Source-to-image distance

Which of the following terms describes penetrating to the head, or toward the head? A) Caudal B) Anterior C) Cephalic D) External

Which of the following terms is referring to the palm (anterior surface) of the hand? A) Medial B) Palmar C) Plantar D) Posterior

Which of the following planes divides the body into equal right and left parts? A) Sagittal plane B) Midsagittal plane C) Coronal plane D) Midcoronal or midfrontal plane E) Transverse plane

Which of the following refers to the position when the patient's right side is on the image receptor, with his or her front leaning toward the IR? A) Left anterior oblique B) Right anterior oblique C) Left posterior oblique D) Right posterior oblique

Which of the following fluoroscopic examinations would have the patient swallow a barium sulfate suspension? A) Upper gastrointestinal series B) Lower gastrointestinal series C) Intravenous urogram D) Arthrogram

Which of the following agents is (are) injected into joint capsules to produce an arthrogram? A) Barium B) Iodine C) Radioactive carbon D) Paramagnetic agents

Which of the following is a noninvasive diagnostic modality that allows visualization of anatomic structures without the use of radioactive x-rays? A) Magnetic resonance imaging B) Computed tomography C) Angiocardiogram D) Myelography

Which of the following examinations cannot be performed on a patient with a cardiac pacemaker? A) MRI B) CT C) Arteriography D) Doppler ultrasound

Which types of scans do not provide clear images of anatomic structures but are used to obtain information about the function of organs and tissues? A) MRIs B) CT scans C) Nuclear medicine scans D) Sonograms E) All of the above

DEXA scanners are used for which of the following? A) Evaluate bone density of the hip B) Diagnose cancerous tumors C) Evaluate blood flow to the heart D) Determine the sex of the fetus E) Diagnose herniated intervertebral disks

Which of the following is not a documented latent effect of low doses of ionizing radiation? A) Cataract formation B) Carcinogenesis C) Shortened life span D) Osteoradionecrosis

Which trimester poses the greatest fetal risk from radiation to the uterus in excess of 150 mGy-t (5 rad)? A) First trimester B) Second trimester C) Third trimester D) All of the above

Which of the following methods is (are) used to protect personnel from unnecessary radiation during fluoroscopic procedures and mobile radiographic examinations? A) Time B) Distance C) Shielding D) All of the above

Which of the following statements is correct regarding placement of a gonad shield on a female patient? A) Required on patients over the age of 55 B) Placed with its lower margin at the level of the pubic symphysis C) Positioned with its upper margin about 1 inch below the pubic symphysis D) Only used when gonads are within the primary radiation field E) Both A and B

The radiopaque substance used to enhance the visibility of soft tissues in imaging studies is called a(n) __________.

The radiographic view in which the coronal plane of the body or body part is parallel to the film plane (AP or PA) is a(n) __________ projection.

The radiographic view in which the sagittal plane of the body or body part is parallel to the film is called __________.

The frontal projection in which the patient is prone, or facing the x-ray film or image receptor, is called __________.

The radioactive substance administered to a patient for nuclear medicine imaging procedures is called a(n) __________.

AP stands for __________.

__________ is a procedure in which a catheter is used to open or widen a blood vessel.

A fluoroscopic examination of a joint in which a contrast medium is used to allow visualization of the soft tissue components is a(n) __________.

A(n) __________ is a moving grid device that prevents scatter radiation from fogging an x-ray film.

__________ is a therapeutic technique performed by the radiologist in which a catheter is used to block a blood vessel and prevent hemorrhage.

__________ ultrasonography can be used to detect vascular disease, such as atherosclerosis and venous thrombosis.

A(n) __________ should be worn close to the collar and outside a lead apron to pick up radiation exposure.

For a(n) __________, iodine dye is given IV to allow visualization of the renal system.

Radioactive tracers are used in __________ to provide information about the function of organs and tissues.

Summarize the safety checks that should be performed before an x-ray image is taken.

You have a 58-year-old patient who is suspected of having osteoporosis. The physician orders a DEXA scan, and the patient is scheduled to return for a visit to learn the results. Explain to the patient what a DEXA scan is, how it is performed, and what the results might mean.

Patients with cardiac pacemakers cannot have an MRI scan.

A patient is not exposed to an average amount of radiation during an MRI procedure.

Nuclear medicine scans provide clear, detailed images of anatomic structures.

A barium enema is performed before a colonoscopy to ensure the best visualization of the colon.

All radiographic examinations requiring the use of iodine uptake should be scheduled before a lower GI series.

The potential formation of cataracts is a concern for radiographers who work extensively with fluoroscopy.

A parent, rather than a professional radiographer, should hold a child in position for an x-ray examination.

A lateral projection takes an image from either the patient's right or left side.

The source-to-image distance is the distance from the gantry to the film.

The collimator uses a shielded device to limit the amount of radiation exposure to the patient.

Digital radiography uses a filmless imaging system.

In the lateral recumbent position, the patient is sitting up on the right or left side.

In a frontal projection, the coronal plane of the body or body part is parallel to the film plane.

Indications of serious complications from iodine dye injection include flushing and nausea.

Cardiac catheterization allows visualization of the endocardium of the atria and ventricles.

CT studies are noninvasive, painless examinations that typically do not require any special patient preparation.

The best tool for detailed studies of the organs of the chest and abdomen is either a chest x-ray film or a flat plate of the abdomen.

An open MRI does not always provide image quality equal to that produced by conventional units.

The radioisotopes used in nuclear medicine cause the patient to become radioactive; this requires special precautions for family members.

PET scans frequently are used to assess the spread of cancerous tumors.

Patients on long-term steroid therapy are at increased risk for developing osteoporosis.

Buttons and thick seams in clothing may cause an artifact on an x-ray film.

Patients with diabetes should take their insulin before examinations that require NPO preparation to prevent hyperglycemia.

Blood cells and blood-producing cells are very sensitive to radiation exposure.

The amount of exposure to radiation is directly linked to the length of time spent in the radiation field.