The normal adult platelet count should be in the range of:

During a one-person cardiopulmonary resuscitation, the proper ratio of chest compressions to ventilations would be…

The escape of intravenous fluids from a needle or blood vessel into the surrounding tissues is called…

Medication administration using parenteral routes include which of the following?

1. Intradermal
2. Subcutaneous
3. Transdermal

The position of the seminal vesicles in the male pelvis should be located…

Of the following section widths and spacing, which is most suitable for a general survey CT of the neck?

The type and number of detectors and material used does NOT affect the number of x-rays that completely penetrates the patient.

The introduction of a multi-row detector scanner design in the late 1990s allowed for the acquisition of four slices in a single rotation.

What causes scatter radiation?

The type of isolation technique used to protect against infection transmitted through fecal material is…

The dose experienced by the pituitary gland from a typical CT brain examination would be approximately…

The most important consideration in the care of an unconscious patient is to ensure the…

What is indicated by the arrow in the image?

Which of the following is preferred to perform an intravenous contrast administration with an automatic injector during a CT examination?

Intravenous drip infusion for contrast material should remain at what level?

A risk of peritonitis is associated with which type of oral contrast media if leakage from the digestive tract occurs due to perforation?

Which statement concerning parenteral routes of medication administration is correct?

During a post-myelogram CT examination of the lumbar spine, the prone position is used in an effort to…

The radiologist has requested a CT examination to identify the thymus gland in a young pre-puberty patient. The thymus gland is located…

The introduction of third-generation CT scanners made continuous rotating (spiral/helical) scanning possible.

An enormous amount of heat builds up in the CT tube because…

The production of scatter radiation results from an x-ray photon passing close to an atom of the target material causing it to be greatly deflected off its course.

Enteric precautions attempt to protect persons from the spread of infection through indirect or direct contact with fecal matter.

The CTDI should be ________________ the MSAD if there is no overlap or gap between adjacent slices.

The average radiation dose to the pituitary gland during a typical CT brain scan is…

What is indicated by the arrow in the image?

The term __________ refers to late effects of radiation, such as genetic mutations, occurring from even small doses of radiation.

A patient arrives in the CT exam room from the ER, the technologist notices the IV bag is laying on the edge of the stretcher and blood has returned into the tubing, what if anything should be done?

The oral contrast media Gastrografin, barium sulfate and Hypaque pose no associated risk in a patient who is suspected of having a perforation of the digestive tract.

Which of the following can be used to decrease the viscosity of an iodinated contrast material?

A CT examination of a female pelvis reveals ascites present in an area posterior to the uterus and ovaries are known as…

The thymus gland in prepuberty patients is easily visualized with CT scans of the mediastinum area.

What made spiral/helical imaging possible?

Heat build-up in the CT tube is NOT a factor due to the x-ray filter positioned in the tube which absorbs the lower energy photons before they can enter the patient.

Which generation of scanners employs multi-row detector technology?

Following an intravenous contrast administration, which of the following methods provides the greatest plasma-iodine concentration?

The resulting dose calculation of a CT examination with overlapping of adjacent slices will result in the CTDI being ________ the MSAD.

When no overlap or gap exists between adjacent slices of a CT scan, the CTDI will be __________ the MSAD.

What is indicated by the arrow in the image?

Proper handwashing technique requires the technologist to use soap and warm water with a circular rubbing motion for at least…

Intravenous drip infusion contrast material should be placed at a height of 18-24 inches above the patient to ensure correct flow and that no blood is returned into the tubing.

The patient dose can be decreased during spiral/helical CT examination with which of the following?

When using iodinated contrast media the viscosity can be decreased by an increase in temperature of the contrast media.

Which factor(s) has no measurable effect on the spatial resolution?

1. kVp
2. Focal spot size
3. Detector sampling frequency
4. Matrix size

A CT study of the head has been ordered without contrast, which of the following may be performed without the use of a contrast agent?

Which statement listed below is NOT true regarding the collection of CT data?

The quantity of electrons that flow from the cathode to the anode in the CT tube is controlled by…

Multi-row detector scanners technology can be found on both third and fourth-generation CT scanners.

To provide the maximum plasma-iodine concentration and tissue enhancement the iodinated contrast medium should be administered in a drip infusion technique.

During a CT scan of the brain, the mAs is changed from 2 seconds to 4 seconds, if all other technical factors remain unchanged the patient dose is…

A normal GFR value is greater than 60?

What is indicated by the arrow in the image?

When completing a patient consent form for a CT scan involving intravenous contrast media, which of the following should be included?

The medical term commonly used in place of the word vomit would be…

Shortly after the administration of intravenous iodinated contrast media, a patient develops diffuse urticaria. Treatment should include…

Dyspnea is an example of a mild reaction to iodinated intravenous contrast media.

To reconstruct an image a second time with some change in technical factor is called ________________.

When performing a CT study of the head to rule out a possible subdural hematoma the administration of intravenous iodinated contrast is necessary to visualize the area in question.

To produce a quality image the x-rays must be passed through the body at many different angles to collect a complete set of CT data using long scan times to average out motion artifacts.

Which of the following are part of the CT tube?

Which of the following is FALSE concerning third and fourth-generation CT scanners?

The kV or tube voltage originates from the tube cathode and is important to the production of x-ray photons due to…

If the mA of a 2-second brain scan is double and all the other technical factors remain the same the patient dose will quadruple.

What techniques could be used to increase the chance of scanning during the optimal peak of density in the pulmonary arteries during a PE study?

What is indicated by the arrow in the image?

Of the following laboratory tests, which would be correct for the acronym PTT?

A patient with an immunosuppressed condition would be placed in which of the following types of isolation precautions?

A patient is having difficulty breathing, which of the following terms is used to describe this condition?

Which of the following is/are considered examples of a mild reaction to iodinated intravenous contrast media?

1. Shock
2. Pulmonary edema
3. Vomiting
4. Dyspnea

Which of the following areas is/are most commonly imaged using high-resolution CT?

To best demonstrate a tumor of the liver the CT scan should be performed during which of the following phases of contrast enhancement?

Which of the following would you find in the gantry of a modern CT system:

1. X-ray tube
2. Solid-state detectors
3. Pre-patient collimators
4. Array processor

Of the list below which is not a part of the CT tube?

Multi-row detector scanners use all of the detector arrays during every scan.

During a CT examination, the CT technologist is responsible for monitoring the patient…

The complete name of the laboratory test known as PTT is…

What is indicated by the arrow in the image?

What is indicated by the arrow in the image?

One major advantage of non-ionic contrast media over ionic media is…

A patient with an immunosuppressed condition is placed under contact precautions during their hospital stay to guard against the possible contamination of the patient with a potential infection.

The term used to describe the reduction in the number of infectious organisms without complete elimination is…

Patient consent is not required for which of the following CT studies?

High-resolution CT is a specialized technique that uses narrow section widths and a low-resolution algorithm for image reconstruction.

CT examination of the liver for hepatic tumor evaluation should NOT be performed during which of the following phases of contrast enhancement?

Found within the gantry of modern CT systems are the solid-state detectors, x-ray tube, array processor, and the collimators.

Which of the following are NOT commonly available on today’s commercial CT scanners?

1. Fourth-generation technology
2. Xenon detectors
3. Continuous rotation technology

Modern CT systems are limited to non-oblique transverse scanning.

It is NOT the CT technologist’s responsibility to monitor the patient while in the CT examination department, this is done by the nurse.

Before giving a patient IV contrast or performing a biopsy the results for the laboratory test PTT should be checked.

What is indicated by the arrow in the image?

What is indicated by the arrow in the image?

The relationship between radiation exposure and its potentially harmful effects is termed nonstochastic.

Of the following CT examinations, which may be performed using an intrathecal injection of iodinated contrast material?

To reduce the number of infectious organisms without completely eliminating is termed…

The patient is not required to give informed consent for a noncontrast CT study of the brain to rule out a subdural hematoma.

High-resolution CT is most commonly used for evaluation of the lungs.

The streaking artifact shown in this image is most likely due to?

The array processor is located near the host computer and is the site of the reconstruction of the CT image data into CT raw data.

Today’s commercially available CT scanners use fourth-generation technology and xenon detectors.

The device used to measure the patient dose from a CT examination is the ionization chamber.

The radiation dose to the patient will NOT be minimized by which of the following?

Renal function refers to the function of the liver.

What is indicated by the arrow in the image?

What is indicated by the arrow in the image?

The term used to describe radiation exposure and its potentially harmful effects is called…

Intrathecal injections of iodinated contrast media may be performed to evaluate the lumbar spine during a CT examination.

The normal pulse rate for a child should be within what range?

Which of the following is considered a non-ionic contrast material?

1. iodamide
2. iohexol
3. iothalamate
4. diatrizoate

High-resolution CT would be used for the evaluation of which of the following areas of anatomy?

Pancreas
Brain
Lung
Mediastinum

The limiting resolution of a CT scanner is 15 lp/cm, what is the smallest object size that can be resolved?

Why are x-rays used in CT image acquisition?

Which system component converts the projection attenuation data into the proper form for the array processor?

The device used to measure the radiation dose to the patient from a CT examination is…

Increasing the distance between the patient and the x-ray tube will minimize the radiation dose to the patient.

All states are required by law to have a patient’s sign consent forms before performing any invasive procedure.

What is indicated by the arrow in the image?

The bore dimension of butterfly needles is indicated by the gauge, which of the following lists places the gauge in decreasing order of bore dimension?

Statistically speaking, severe reactions to intravenous iodinated contrast material occur in approximately what percentage of all CT patients?

Symptoms or signs of hypovolemic shock include…

1. Hypertension
2. Pallor
3. Oliguria
4. Tachycardia

Where is cerebrospinal fluid produced?

Before a CT-guided needle biopsy is performed, the area the needle is inserted in is usually anesthetized with…

The CT technologist controls what part of x-ray production in a CT exam?

X-ray production in CT is produced using a high-frequency generator to produce the tube voltage across the tube cathode and anode.

The system component responsible for converting the projection attenuation data into the proper form for the array processor is the analog-to-digital converter.

A history of an allergic reaction to shellfish is an absolute contraindication of the use of intravenous contrast administration.

When speaking of x-ray radiation, which of the following is true?

Which of the following values for prothrombin time are considered outside the normal range?

1. 10 seconds
2. 25 seconds
3. 30 seconds

What is indicated by the arrow in the image?

Of the following statements, which is NOT an advantage of using an automatic power injector over the manual bolus method of intravenous contrast administration?

The drug known as Solu-Cortef may be classified as a…

The signs and symptoms of hypovolemic shock include:

1. Hypertension
2. Pallor
3. Tachycardia
4. Oliguria

Gas accumulating within a degenerating intervertebral disk is termed…

All of the following drugs are commonly used as a local anesthetic in the preparation of the needle insertion site during a percutaneous biopsy.

1. Diazepam
2. Lidocaine
3. Lithium

The CT technologist controls the energy level of x-ray photons by selecting the appropriate ____________?

The two events that produce x-ray photons (Bremsstrahlung radiation) useful in CT imaging result from the loss of kinetic energy from the incoming electron.

X-ray photons can be produced by a collision with an atomic nucleus, passing close to an atomic nucleus and colliding with an electron within an atom and ejecting it.

Which of the following is/are not an absolute contraindication of intravenous contrast administration?

1. Elevated serum creatinine level
2. Sickle cell anemia in active crisis
3. Allergic history to shellfish
4. Pheochromocytoma 

The following statement regarding x-ray radiation measurement is correct: When measuring radiation dose only from x-rays, rads and rems are equivalent.

An elevation of which of the following lab tests would impact the decision to administer IV contrast media?

1. BUN
2. PT
3. Creatinine

What is indicated by the arrow in the image?

The maximum intravenous iodinated contrast media dose should not exceed ___________ for a child.

Corticosteroids are a type of hydrocortisone used during the treatment of anaphylactoid reactions to iodinated contrast materials.

Which of the following are used as common sites for the injection of iodinated contrast material?

1. Antecubital vein
2. Cephalic vein
3. Brachial artery
4. Basilic vein

A CT examination calls for the use of a stereotactic unit, this specialized equipment is required with which of the following exams?

For a three-dimensional disarticulation study of the hip, small overlapping section widths and an SFOV (small scan field of view) produce the best quality image.

The CT technologist controls the quantity of x-ray photons by selecting the appropriate ___________________ , which determines the the number of x-ray photons emitted from the tube.

Bremsstrahlung radiation is the type of interaction that produces the x-ray photons used in CT imaging. Which of the following types of electron activity does NOT result in Bremsstrahlung radiation?

1. A collision between the incoming electron and the nucleus of the target atom.
2. A collision between the incoming electron and an electron in an inner shell of the target atom.
3. A slowing down of an incoming electron resulting from passing close to the positive charge of the target atoms nucleus.

Solid-state detectors ionize in response to an x-ray conversion resulting in a flash of light which is converted to an electrical signal.

The total quantity of radiation dose received by the patient from a CT scan series is termed…

Which of the following statements regarding x-ray radiation is true:

1 rad = 1 Gy
1 rad = 1 Sv
1 rem = 1 rad
1 rem = 1 Gy

The platelets found in blood are small…

What is indicated by the arrow in the image?

Normal prothrombin time should range between ___________ seconds.

An automatic injector is set at 1.5 mL/sec injection rate. What is the injection time for a contrast volume of 150 mL?

Which of the following would not be used as a site for the injection of iodinated contrast material?

To accurately demonstrate _____________________ the use of intravenous iodinated contrast media during a CT study of the chest would be required.

Which of the following scan parameters should NOT be used for a three-dimensional disarticulation study of the hip?

1 to 2 mm section width
(SFOV) Small scan field of view
Overlapping sections

mA is the voltage potential between the tube cathode and the anode while kV controls the filament current and the temperature of the cathode filament.

Characteristic radiation results from the collision between an incoming electron and an electron in an inner shell of the target atom.

Xenon detectors can be used in third-generation CT scanners, but cannot be used in fourth-generation scanners.

Which of the following iodinated contrast media may NOT be used for an intrathecal injection?

The average pulse rate range for an infant is ________ BPM.

A possible long-term effect of repeated exposure to radiation include which of the following?

1. Cancer
2. Cataracts
3. A decrease in life expectancy

What is indicated by the arrow in the image?

A moderate adverse reaction to iodinated intravenous contrast media may include which of the following examples?

1. Syncope
2. Shock
3. Severe vomiting

The most dependable laboratory value to measure renal function is…

Iodinated contrast media is not commonly administered in the brachial artery.

A female patient is scheduled for a double-contrast CT study of the bladder, an intravenous injection of iodinated contrast and _________________ is indicated to accurately visualize the bladder.

A CT examination of the liver shows an abnormal finding of reduced density, which of the following is most likely the cause?

The mA controls the number of x-ray photons emitted from the tube, while the kV determines the energy level of the x-ray photons.

The ______ atomic number and a ___________ melting point make tungsten the target material of choice.

Increasing which of the following will increase the likelihood that a given x-ray will penetrate a material.

1. kV
2. mA
3. collimation

Which of the following sizes of butterfly needles allows the least amount of iodinated intravenous contrast media to be administered?

An infant with a pulse rate of 140 BPM is brought to the CT department, this is not a normal BPM for an infant.

A cardiac arrest victim must be administered CPR within a maximum of ____ minute(s) or there is a risk of brain damage.

What is indicated by the arrow in the image?

A moderate adverse reaction to iodinated intravenous contrast media may include shock, syncope and severe vomiting.

Diastolic blood pressure in a normal adult should range between…

To decrease patient dose during a CT examination, which of the following technical changes should be made?

To best demonstrate a thoracic intervertebral disk of a patient with severe lateral scoliosis, which of the following may be used to improve visibility?

An abnormal density of the liver is found to be a fatty infiltrate. The CT number for this area would most likely be in the range of -100 Hounsfield units.

The distance traveled by the x-ray photon on their course through the patient’s body does NOT affect the total quantity of x-rays photons that completely penetrate the patient.

Tungsten has a high atomic number of 74 and a low melting point which makes it an excellent source of x-rays.

An increase in kV will increase the likelihood that a given x-ray photon will penetrate a material but does NOT increase the energy of the x-ray photon.

To administer iodinated intravenous contrast media at a rapid rate a butterfly needle with a gauge of _________ should be used.

During which trimester is the human embryo/fetus most sensitive to radiation?

To reduce the risk of brain damage to a patient experiencing cardiac arrest, CPR should be administered within 10 minutes of the patient’s last breath.

What is indicated by the arrow in the image?

An average skin dose of __________ would be considered typical for a CT study of the head.

A normal range for the diastolic blood pressure of an adult is between 60-90 mmHg.

The patient dose can be reduced by using a technique termed “partial scan” or “half-scan” which reduces the total rotation of the x-ray tube.

The average density in Hounsfield units of a renal cyst should be between -20 to +20 Hounsfield units.

When performing a general survey CT examination of the neck a section width and spacing that is most suitable is 5 mm thick every 5 mm.

The molecular composition of the tissues through which the x-ray photons pass will affect the total quantity of x-ray photons completely penetrating the patient body.

Which of the following scanner designs was the first to acquire four slices in a single rotation of the x-ray tube?

Collimation blocks x-ray electronically to control the thickness of the x-ray beam.

A patient states a feeling of faintness, which of the following terms may be used to indicate this?

The human embryo/fetus is most sensitive to the effects of radiation during the first trimester of pregnancy.

A normal pulse rate for an average adult is __________ BPM.

What is indicated by the arrow in the image?