CT-Exam Secrets Practice Questions

D. Signed consent forms are not required by law in all states.

State laws requires patients to sign consent forms in the following situations: A. Prior to any injection of contrast materials B. Prior to sedation for surgical procedures C. Prior to hospital admission D. Signed consent forms are not required by law in all states

B. Bolus, Non-equilibrium, Equilibrium

What are the three phases of IV contrast enhancement? A. Velocity, Bolus, Venous B. Bolus, Non-equilibrium, Equilibrium C. Equilibrium, Portal Venous, Arterial D. Arterial, Venous, Delayed

C. CTDI and DLP

What are the two scanner-based radiation patient dose estimates displayed on the operator's console after the completion of a CT exam? A. mAs and kVp B. MSAD and DLP C. CTDI and DLP D. mAs and DLP

C. Water and Air

What are two negative contrast agents? A. Barium sulfate and gastrografin oral contrast B. Isomolar and ionic IV contrast C. Water and Air D. Intrathecal and Intra-articular contrast

C. Intrathecal

What category of contrast agents is injected into the subarachnoid space during a myelographic study of the spine? A. Hyper-osmolar B. Intra-articular C. Intrathecal D. Intravenous Ionic

C. Tracheoesophageal Fistula

What condition is a contraindication to having a patient prep orally with Barium Sulfate? A. Diarrhea B. Constipation C. Tracheoesophageal fistula D. Iodine allergy

D. All of the above

What contrast media factor(s) is associated with increased instances of adverse reactions to contrast agents? A. Higher injection rates B. Larger volume of contrast C. Higher concentration of iodine D. All of the above

A. Reduces viscosity

What effect does warming the contrast agent have on the contrast? A. Reduces viscosity B. Decreases osmolality C. Increases chemotoxic reactions D. Increases viscosity

A. Pitch

What imaging parameter is defined as the extent to which the x-ray helix is stretched during a helical scan, determines volume covered, and affects radiation exposure and image quality? A. pitch B. table increment C. slice thickness D. kVp

C. 5-25 mg/dl

What is considered a normal range for Blood Urea Nitrogen (BUN)? A. 30-55mg/dl B. 0.6.-1.7 mg/dl C. 5-25 mg/dl D. 155-190 mg/dl

B. decreased the number of CT studies ordered

What is considered the most effective way to reduce the population dose from CT radiation exposure? A. Newer CT scanners B. Decrease the number of CT studies ordered C. Eliminate pediatric CT scans D. Iodine suppliments

B. Aseptic technique

What method must be utilized for all peripheral venipuncture procedures to reduce the risk of microbial contamination and infection? A. Hand washing B. Aseptic technique C. Proper patient identification D. Wearing sterile gloves

A. mA modulation

What technical factor adapts to mA to the beam attenuation as a function of the projection angle allowing the current to be more efficient, thus reducing patient dose? A. mA modulation B. kVp C. Filtration D. Collimation

A. Ionic

What type of IV contrast agent is rarely used today due to high reaction rates? A. Ionic B. Non-Ionic C. Iso-osmolar D. Intrathecal

C. Iso-osmolar

What type of IV contrast is the same or less osmolality as blood? A. Ionic B. Non-Ionic C. Iso-osmolar D. Intrathecal

B. Rectal Contrast

What type of contrast is often used to enhance CT images of the large intestines and the pelvic organs? A. Oral barium sulfate B. Rectal contrast C. Intrathecal contrast D. Oral water soluble prep

A. Pitch

CTDIvol (CT Dose Index Volume) is a modified patient dose accounting for which technical parameter? A. Pitch B. Slice thickness C. Slice increment D. Filtration

C. Pediatric

Color coded weight based CT protocols have been developed for what population to help reduce patient dose? A. Geriatric B. Adult C. Pediatric D. All of the above

D. Metformin

Diabetic patients should refrain from taking what medication post IV contrast injection and resume only after renal function has been determined to be normal? A. Beta blockers B. Insulin C. Coumadin D. Metformin

D. All of the above

Efforts and measures to reduce patient dose should be initiated by and are the responsibility of whom? A. Ordering physicians B. Clinical radiology staff C. CT manufacturers D. All of the above

C. Increases patient dose

Increasing mAs will decrease noise levels on the CT images. What will it do to the patient dose? A. Decrease patient dose B. Does not affect patient dose C. Increases patient dose D. None of the above

D. Severe

What adverse reaction category classification do Myocardial Infarction and Respiratory Arrest fall? A. Minor B. Delayed C. Moderate D. Severe

A. 20 gauge minimum needle size

Peripheral IV access for an optimal CT Angiogram study should meet which criteria: A. 20 gauge minimum needle size B. Located in the distal extremity C. Must have mid-line access D. Arterial access must be obtained

D. All of the above

Thorough patient preparation and education prior to a CT scan will do which of the following? A. Reduce repeat radiation exposure B. Reduce patient anxiety C. Ensure best possible images D. All of the above

C. Pheochromocytoma

What adrenal pathology may precipitate a hypertensive crisis if IV contrast is utilized? A. Multiple myeloma B. Diabetes C. Pheochromocytoma D. Renal insufficiency

C. CT guided liver biopsy

Which CT procedure requires Prothrombin Time (PT) and Partial Thromboplastin Time (PTT) laboratory results prior to starting the procedure? A. CT abdomen and pelvis with IV contrast B. CTA PE chest C. CT guided liver biopsy D. CT soft tissue neck with IV contrast

D. All of the above

Which factors determine the automatic power injector flow rate during a CT exam? A. IV size and location B. Type of CT exam C. Speed of CT scanner D. All of the above

A. Blood Urea Nitrogen (BUN) and Creatinine

Which laboratory test(s) should be performed prior to CT exams that require IV contrast media injections to determine renal function? A. Blood Urea Nitrogen (BUN) and Creatinine B. Prothrombin Time (PT) C. Platelet Count and Complete Blood Count (CBC) D. Liver Enzymes

D. All of the above

Which of the following questions should be included in the pre-screening for a contrast CT exam on a 35 year old female? A. Chance of pregnancy? B. Allergies? C. Diabetic? D. All of the above

A. Nephrotoxicity

Why is Multiple Myeloma considered a risk factor and possible contraindication to the injection of IV contrast? A. Nephrotoxicity B. Anaphylactic reaction C. Hypotension D. Bronchospasm