CT Domain 2: Safety Welcome to your CT Domain 2: Safety 1. CT: Safety What is the primary reason for using lead shielding in CT imaging? To enhance the image quality To protect the patient from unnecessary radiation To improve the contrast resolution To stabilize the CT machine None 2. CT: Safety During a CT procedure, when should the technologist apply the ALARA principle? Only during pediatric exams Throughout the entire procedure Only in the case of pregnant patients When imaging the abdominal region None 3. CT: Safety Which of the following materials is most effective for shielding against X-rays in CT imaging? Lead Aluminum Plastic Glass None 4. CT: Safety In CT imaging, what is the main purpose of the collimation? To increase the field of view To reduce patient dose by limiting the beam width To enhance the resolution of the image To speed up the imaging process None 5. CT: Safety What is the significance of pitch in CT scanning regarding patient safety? A higher pitch decreases radiation exposure A lower pitch increases image quality A higher pitch increases scan time A lower pitch is used to enhance 3D reconstruction None 6. CT: Safety When considering contrast media for a CT scan, what is a crucial safety consideration? The patient's hair color The patient's previous exposure to contrast media The type of clothing the patient is wearing The patient's dietary restrictions None 7. CT: Safety What is the most appropriate action if a patient experiences an adverse reaction to iodinated contrast during a CT exam? Continue the exam while monitoring the patient Immediately stop the administration of contrast and follow emergency protocols Increase the flow rate of the contrast Switch to a non-iodinated contrast agent None 8. CT: Safety How does time factor into the ALARA principle in CT imaging? Longer scan times are encouraged to ensure clear images Minimizing scan time reduces the patient's radiation exposure Scan time has no impact on radiation dose Increasing scan time allows for lower doses of radiation per slice None 9. CT: Safety In the context of CT imaging, what is the significance of the dose-length product (DLP)? It indicates the speed of the CT scanner It measures the spatial resolution of the images It provides a dose estimate that reflects both scan length and radiation intensity It determines the contrast resolution of the CT images None 10. CT: Safety What is the primary reason for performing a scout scan in CT imaging? To identify the exact location for the detailed scan To calibrate the CT machine To check the functionality of the X-ray tube To provide a preliminary image quality check None 11. CT: Safety Why is it important to verify a patient's pregnancy status before a CT scan? To choose the appropriate scan parameters To prevent unnecessary radiation exposure to the fetus To decide the need for contrast media To adjust the patient positioning None 12. CT: Safety When considering the use of gadolinium-based contrast agents in CT imaging, what is a critical safety concern? The potential for nephrogenic systemic fibrosis in patients with kidney impairment The risk of electromagnetic interference with medical devices The possibility of increased radiation exposure The chance of allergic reactions to the CT scanner's noise None 13. CT: Safety In CT imaging, what is the main reason for monitoring the cumulative radiation dose a patient receives over time? To ensure the machine is functioning correctly To comply with insurance reimbursement policies To minimize the risk of radiation-induced effects To track the patient's recovery progress None 14. CT: Safety How does beam hardening affect CT image quality and patient safety? It increases the radiation dose to the patient It reduces the contrast resolution of the image It causes artifacts that can obscure diagnostic information It decreases the scan time, reducing patient discomfort None 15. CT: Safety What is the primary consideration when selecting the kVp (kilovoltage peak) and mA (milliampere) settings for a CT scan? The patient's age and weight The type of CT scanner used The specific body part being imaged The desired scan speed None 16. CT: Safety What safety measure is recommended when a patient has a known allergy to iodinated contrast media? Proceed with the scan without using contrast Use gadolinium-based contrast instead Administer premedication to the patient Increase the contrast media dosage None 17. CT: Safety How does the principle of "image gently" apply to pediatric CT imaging? By using the highest possible dose for clarity By minimizing radiation exposure through tailored protocols By increasing the contrast media concentration By extending the scan duration None 18. CT: Safety What is the importance of having a radiation dose management program in a CT facility? To ensure rapid imaging processes To facilitate billing and reimbursement To monitor and optimize radiation doses for patient safety To maintain the CT scanner's operational efficiency None 19. CT: Safety In what scenario is the use of a bismuth shield recommended in CT imaging? When imaging the brain to enhance image clarity For abdominal scans to reduce noise During pelvic imaging to improve resolution To protect thyroid and breast tissue during chest and neck scans None 20. CT: Safety What is the primary safety concern with the use of high-osmolality contrast media (HOCM) in CT imaging? They can cause patient discomfort due to heat sensation They are associated with a higher incidence of adverse reactions They increase the risk of nephrotoxicity They lead to prolonged scan times None 1 out of 20 Time is Up! Time's up
