Radiographic TechniqueCâu 51 / 100
What is the purpose of the raised identification dot on intraoral film, and how should it be oriented during placement?
a.It marks the lead foil side and must face away from the beam
b.It allows the operator to determine the patient's left and right during mounting, and the convex side faces the beam, toward the occlusal or incisal edge
c.It indicates the expiration date and should face the tongue
d.It has no clinical function and may be oriented in any direction
Giải thích
The identification dot establishes orientation so the mounted series can be correctly assigned to the patient's right and left; the raised convex side faces the beam and is positioned toward the occlusal or incisal edge to avoid obscuring apical structures. It does not mark the lead foil, which is on the back of the packet facing away from the beam. The dot carries no date information, and orienting it randomly makes accurate mounting impossible.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Which routine quality-assurance test lets an office detect gradual changes in processing solutions before image quality suffers?
- An image of an elderly patient shows the entire radiograph blurred, with no sharp outlines anywhere. What is the most likely cause?
- Using the bisecting technique, how does vertical angulation differ between maxillary and mandibular projections?
- Which head position is correct when preparing a patient for a panoramic radiograph?
- A panoramic radiograph shows a dark radiolucent band across the apices of the maxillary teeth. What instruction was missed?
- Which darkroom test verifies that the safelight is not fogging film?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với DANB Radiation Health & Safety (RHS) + Infection Control (ICE) Exams · Quy trình kiểm tra