Radiographic TechniqueCâu 48 / 100
Which routine quality-assurance test lets an office detect gradual changes in processing solutions before image quality suffers?
a.Weighing the lead apron each month
b.Counting the number of retakes per patient
c.Measuring the length of the position-indicating device
d.Exposing a stepwedge daily and comparing the densities with a reference film
Giải thích
A stepwedge exposed under identical conditions each day produces a strip of known densities that can be compared with a reference, so drift in developer strength or temperature is caught early. Weighing the apron and measuring the PID check equipment condition, not solution performance. Retake counts are a useful indicator but reveal problems only after images have already failed.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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