RTBC - fundamentals of fluoroscopy-
Questions & Answers
Which two terms are used interchangeably to refer to the overall amount of radiation delivered to
a patient? ✔️Correct Ans-Dose area product (DAP) and kerma area product (KAP)
The primary role of the dose area product (DAP) meter in a fluoroscopic system is to measure
the: ✔️Correct Ans-Total of air kerma striking the surface of the patient
Where is the dose area product (DAP) meter located in the fluoroscopic system? ✔️Correct Ans-
Attached to the collimator
What term refers to the total amount of exposure given to a patient for a fluoroscopic procedure?
✔️Correct Ans-Reference dose
What can result from a fluoroscopic procedure dose in the range of 2-5 Grays (Gy)? ✔️Correct
Ans-Transient erythema
What injury is classified as a sentinel event and occurs after exposure of 15 Grays (Gy)?
✔️Correct Ans-Tissue necrosis
What includes the record of patient dose? ✔️Correct Ans-Radiologist interpretation
, During a fluoroscopic procedure, the tech observes that the fluoroscopy time is reaching the five
minute mark. What steps should be taken? ✔️Correct Ans-Notify the operator that the 5 minute
point is approaching
What does the acronym "SSD" stand for in fluoroscopy? ✔️Correct Ans-Source-to-skin distance
How are source-to-skin distance (SSD) and patient dose related in fluoroscopy? ✔️Correct Ans-
Reduced SSD results in increased patient dose
Which mnemonic device can be used to remember the required source-to-skin distance (SSD) for
mobile fluoroscopy? ✔️Correct Ans-Have lunch at 12:30 in the OR
What is the consequence of increasing the object-to-image distance (OID) in fluoroscopy?
✔️Correct Ans-Increased size distortion or magnification
How is the distance between the x-ray source and the image receptor (IR) different in mobile
fluoroscopy and stationary fluoroscopy? ✔️Correct Ans-In mobile fluoroscopy, the x-ray source
and the IR usually remain equidistant due to the C-arm.
What two potential hazards should tech be aware of during operating room procedures that
involve fluoroscopy? ✔️Correct Ans-Sterile field disruption
X-ray source placement being placed too close to the patient's skin
Questions & Answers
Which two terms are used interchangeably to refer to the overall amount of radiation delivered to
a patient? ✔️Correct Ans-Dose area product (DAP) and kerma area product (KAP)
The primary role of the dose area product (DAP) meter in a fluoroscopic system is to measure
the: ✔️Correct Ans-Total of air kerma striking the surface of the patient
Where is the dose area product (DAP) meter located in the fluoroscopic system? ✔️Correct Ans-
Attached to the collimator
What term refers to the total amount of exposure given to a patient for a fluoroscopic procedure?
✔️Correct Ans-Reference dose
What can result from a fluoroscopic procedure dose in the range of 2-5 Grays (Gy)? ✔️Correct
Ans-Transient erythema
What injury is classified as a sentinel event and occurs after exposure of 15 Grays (Gy)?
✔️Correct Ans-Tissue necrosis
What includes the record of patient dose? ✔️Correct Ans-Radiologist interpretation
, During a fluoroscopic procedure, the tech observes that the fluoroscopy time is reaching the five
minute mark. What steps should be taken? ✔️Correct Ans-Notify the operator that the 5 minute
point is approaching
What does the acronym "SSD" stand for in fluoroscopy? ✔️Correct Ans-Source-to-skin distance
How are source-to-skin distance (SSD) and patient dose related in fluoroscopy? ✔️Correct Ans-
Reduced SSD results in increased patient dose
Which mnemonic device can be used to remember the required source-to-skin distance (SSD) for
mobile fluoroscopy? ✔️Correct Ans-Have lunch at 12:30 in the OR
What is the consequence of increasing the object-to-image distance (OID) in fluoroscopy?
✔️Correct Ans-Increased size distortion or magnification
How is the distance between the x-ray source and the image receptor (IR) different in mobile
fluoroscopy and stationary fluoroscopy? ✔️Correct Ans-In mobile fluoroscopy, the x-ray source
and the IR usually remain equidistant due to the C-arm.
What two potential hazards should tech be aware of during operating room procedures that
involve fluoroscopy? ✔️Correct Ans-Sterile field disruption
X-ray source placement being placed too close to the patient's skin
