Dosimetry Exam #2 Questions with Complete Solutions (Latest 2025) A patient is lying supine and the physician wants the field moved cephalad 1cm. What direction is the table moved? - Correct Answers ✅out "Smearing" or moving junctions and/or gaps between fields is
called: - Correct Answers ✅feathering
Simulation with a fluoroscope is a: - Correct Answers
✅dynamic study What type of setup is preferred? - Correct Answers ✅isocentric SAD A type of 3-dimensional film commonly used for implants whereby the film and patient remain stationary while the
target rotates is called: - Correct Answers ✅stereo-shift
Positive contrast agents appear ____on a film - Correct Answers ✅white, opaque Which of the following is not an example of a positive contrast agent? - Correct Answers ✅lungs The large half beam block (or asym jaws) used on our tangential breast fields serves to reduce beam divergence from the tangents into the lungs. 1 / 3
Dosimetry Exam #2 Questions with Complete Solutions (Latest 2025) T/F - Correct Answers ✅True What is the simplest and easiest method for contouring? - Correct Answers ✅solder wire What is the most accurate contouring device? - Correct Answers ✅CT What is the primary advantage of treating patients isocentrically? - Correct Answers ✅not moving patients between fields An attempt at 3-dimensional filming that uses only one lateral film and relates magnification and divergence on film compared to isocenter is (i.e.-how one of our doctors In the past determined the depth of the spinal cord on pa spine
patients): - Correct Answers ✅cross table lateral
A port film taken before a treatment that aids in localization
is called: - Correct Answers ✅scout film
Which of the following has been a method for taking contours? - Correct Answers ✅plaster of Paris solder wire 2 / 3
Dosimetry Exam #2 Questions with Complete Solutions (Latest 2025) CT If a patient is lying prone and the physician wants the field moved 1.0cm anterior, in what direction is the table moved? - Correct Answers ✅up If a patient is lying prone and the physician wants the patient moved 1.0cm anterior, in what direction is the table moved? - Correct Answers ✅down Which of the following is an example of an orthogonal field arrangement? - Correct Answers ✅3 field H&N breast with yoke field cranial-spinal axis Which of the following is an immobilization device? - Correct Answers ✅sandbag thermoplastics headrest bite block system A German helmet field is associated with what treatment area? - Correct Answers ✅cranio-spinal axis
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