RAD 112 Facial Bones with Correct Answers 2025

Which of the following is NOT an aspect of the maxilla? A. Frontal process B. Body C. Zygomatic process D. Ramus - Correct Answer-D. Ramus Which is the only unpaired bone in the adult? mandible maxillia palatine bone - Correct Answer-manidible The point of union between both halves of the mandible is termed: ramus mentum symphysis menti - Correct Answer-symphysis menti Which two bones form the bony nasal septum? - Correct Answer-Ethmoid and vomer Which of the following structures are described as scroll-like projections found in the nasal cavity? - Correct Answer-chonchae What is the function of the conchae? to warm air to clean air send oxygen to the lungs 1 and 2 only - Correct Answer-1 and 2 only Which of the following terms describes the junction of the two nasal bones? acanthion nasion mental point - Correct Answer-nasion Which imaging modality best demonstrates bony erosion of the maxillary sinus resulting form acute sinusitis? xray Ct Mri ultrasound - Correct Answer-CT Rad112 Rad112 T/F Facial bone studies should be performed erect whenever possible - Correct Answer-T T/F A Le Fort fracture produces a "free-floating" zygomatic bone - Correct Answer-F T/F A Tri-pod fracture produces a "free-floating" zygomatic bone - Correct Answer-T Which bone is involved with a tripod fracture? zygomatic maxilliary frontal mandible - Correct Answer-zygomatic bone Which frontal projection of the facial bones best visualize the region of the maxilla and orbits? waters (parietoacanthial) caldwell rheese - Correct Answer-waters Where are the petrous portions seen on a Parietoacanthial (Waters method) projection? In the maxillary sinuses superior to the maxillary sinuses inferior to the maxillary sinuses - Correct Answer-inferior to the maxillary sinuses Which single projection of the facial bones best demonstrate any possible air-fluid levels in the sinuses if the patient cannot stand or sit erect? horizontal beam AP PA - Correct Answer-horizontal beam The CR is centered to exit at the level of the __________ for a well positioned 15° PA axial projection of the facial bones glabella acanthion nasion mental point - Correct Answer-nasion T/F The 15° PA axial (Caldwell) projection produces an unobstructed view of the maxilla. - Correct Answer-False Which plane is place parallel to the IR with a true lateral projection of the facial bones? coronal Rad112 Rad112 midsagittal - Correct Answer-midsagittal Where is the CR centered for a lateral projection of the facial bones? zygoma midway between the outer canthus and EAM all of the above - Correct Answer-all of the above T/F For a lateral facial bones projection, the chin should be adjusted so the IOML is perpendicular to the front edge of the IR. - Correct Answer-T Which positioning line is placed perpendicular to the IR for a modified parietoacanthial (Waters method) projection: facial bones? MML AML LML GAL GML - Correct Answer-LML The CR is centered to exit the level of the __________ for a well positioned parietoacanthial (Waters method) projection? nasion acanthion mental point glabella - Correct Answer-acanthion What is the angle between the OML and the plane of the IR with a parietoacanthial (Waters method) projection? This places the __________ positioning line perpendicular to the IR. 30 MML 37 MML 30 GAL 37 GAL - Correct Answer-37 MML T/F The CR should be angled as needed to be parallel to the glabellomeatal line (GML) for the superoinferior tangental projection of the nasal bones - Correct Answer-False What line should be parallel to the CR for a superoinferior tangental projection of the nasal bones? GML GAL MML - Correct Answer-GAL Where are the petrous ridges projected for a properly positioned modified parietoacanthial (Waters method) projection? upper half of the maxillary sinuses Rad112 Rad112 lower half of the maxillary sinuses inferior to the maxillary sinuses superior to the maxillary sinuses - Correct Answer-lower half of the maxillary sinuses Where is the CR centered for a lateral projection of the nasal bones? 1/2 superior to nasion 1/2 medial to nasion 1/2 in inferior to nasion - Correct Answer-1/2 in inferior to nasion Which of the following technical factors do NOT apply to lateral nasal bone projections? A. The technologist should not use automatic exposure control (AEC). B. The technologist should use a small focal spot. C. The technologist should use low to medium kV. D. All of the above apply - Correct Answer-D. All of the above apply T/F A grid is not required for the lateral projection of the nasal bones - Correct Answer-T Which projection will best demonstrate the bony nasal septum? Caldwell waters mod calwell mod waters - Correct Answer-waters How much CR angle is required for the AP axial projection of the zygomatic arches if the IOML is placed perpendicular to the IR? (Hint: this is the same as for an AP axial skull) - Correct Answer-37 caudad How much skull tilt and rotation are required for the oblique inferosuperior (tangental) projection for the zygomatic arches? 15° rotation and 15° tilt toward the affected side 15° rotation and 15° tilt toward the unaffected side 25° rotation and 25° tilt toward the affected side - Correct Answer-15° rotation and 15° tilt toward the affected side Which positioning line, if placed parallel to the IR, ensures adequate extension of the head for the SMV projection for zygomatic arches? OML IOML GAL MML - Correct Answer-IOML During an orthopantomographic procedure, it is important to keep the ___________ positioning line parallel to the floor. OML IOML MML - Correct Answer-IOML Rad112 Rad112 Where is the CR centered for an AP axial projection for the mandible? mental point acanthion nasion glabella - Correct Answer-glabella What CR angulation is used for the AP axial projection of the TMJ with the OML perpendicular to the IR? 30 caudad 35 caudad 20 cephlad 15 cephlad - Correct Answer-35 caudad Which aspect of the mandible is best demonstrated with an AP axial projection? mentum ramus condyloid process temporomandibular fossae - Correct Answer-condyloid process What structures are better defined with the CR angulation is increased from 35° to 40° caudad for the AP axial projection of the mandible? mentum ramus condyloid process temporomandibular fossae - Correct Answer-temporomandibular fossae How much CR angulation should be used for a PA axial projection of the mandible? 20-25 caudad 15-30 cephlad 20-25 cephlad - Correct Answer-20-25 cephlad Where does the CR exit for the optional PA axial projection of the mandible? Acanthion nasion glabella - Correct Answer-Acanthion Which positioning line is perpendicular to the IR for a PA projection of the mandible? OML IOML MML - Correct Answer-OML Rad112 Rad112 Where is the CR centered for an SMV projection of the mandible? - Correct Answer-1½ inches inferior to mandibular symphysis (or midway between angles of mandible) Which factor prevents superimposition of the ramus on the cervical spine for the axiolateral oblique mandible projection? Extending the chin Retracting the chin - Correct Answer-Extending the chin Why is the chin extended for an axiolateral oblique projection of the mandible? - Correct Answer-To prevent superimposition upon the cervical spine A aviolateral oblique projection of the manible shows superimposition of the manible and the cervical spine, how should this be fixed? extend chin nothing this is correct tuck chin - Correct Answer-extend chin How much skull rotation (from a lateral position) is required to place the ramus parallel to the IR for the axiolateral oblique projection of the mandible? none 15 25 30 45 - Correct Answer-none How much skull rotation (from lateral position) toward the IR is required for the axiolateral oblique projection best provides a general survey of the mandible? 0-5 10-15 15-30 30-45 - Correct Answer-10-15 How much skull rotation (from lateral position) toward the IR is required for the axiolateral oblique projection specifically for the mentum? none 15 30 45 - Correct Answer-45 How much skull rotation (from lateral position) toward the IR is required for the axiolateral oblique projection specifically for the bo