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LMRT 226 Skull Final CHCP Questions with
Detailed Verified Answers
Question: For a lateral facial bones projection, the chin should be
adjusted so the IOML is perpendicular to the front edge of the IR.
Ans✅ ✅: true
Question: Which positioning line is placed perpendicular to the plane of
the IR with a true lateral nasal bone projection?
Ans✅ ✅: interpupillary
Question: The modified parietoacanthial (modified Waters) projection
requires more extension of the head and neck as compared with the
parietoacanthial (Waters) projection.
Ans✅ ✅: false
Question: Where is the CR centered for a lateral projection of the
cranium?
Ans✅ ✅: 2 inches superior to EAM
Question: How much difference is there between the OML and IOML
positioning lines?
Ans✅ ✅: 7-8 degrees
Question: Where does the CR exit for a modified parietoacanthial
(modified Waters) projection of the facial bones?
Ans✅ ✅: Acanthion
Question: A patient comes to radiology for a routine study of the
cranium. He is unable to flex his head and neck sufficiently to place the
OML perpendicular to the IR for the AP axial projection. What should the
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technologist do to compensate for this problem without creating
excessive magnification of the occipital bone?
Ans✅ ✅: Use IOML increase angulation by 7 degrees
Question: The 15° PA axial (Caldwell) projection produces an
unobstructed view of the maxilla.
Ans✅ ✅: false
Question: Which one of the following cranial projections will best
demonstrate a possible basilar fracture?
Ans✅ ✅: horizontal beam lateral
Question: Why is the chin extended for an axiolateral oblique projection
of the mandible?
Ans✅ ✅: To prevent superimposition of cervical spine
Question: A pediatric patient enters radiology for a paranasal sinus
series. Because of her age, the child is unable to hold still for the
projections even with the use of immobilization devices. The decision is to
hold the child during each exposure. Which of the following individuals
should be asked to hold the child?
Ans✅ ✅: guardian
Question: What projection of the skull requires the central ray (CR) to
be centered to exit at the glabella?
Ans✅ ✅: PA
Question: A patient comes to radiology with a possible bone cyst within
the squamous portion of the frontal bone. Which of the following
projections would best demonstrate this region with a minimal amount of
distortion of the frontal bone?
Ans✅ ✅: PA with no CR angulation to OML
Question: Which one of the following positioning errors most often
results in a repeat exposure of a cranial position?
LMRT 226 Skull Final CHCP Questions with
Detailed Verified Answers
Question: For a lateral facial bones projection, the chin should be
adjusted so the IOML is perpendicular to the front edge of the IR.
Ans✅ ✅: true
Question: Which positioning line is placed perpendicular to the plane of
the IR with a true lateral nasal bone projection?
Ans✅ ✅: interpupillary
Question: The modified parietoacanthial (modified Waters) projection
requires more extension of the head and neck as compared with the
parietoacanthial (Waters) projection.
Ans✅ ✅: false
Question: Where is the CR centered for a lateral projection of the
cranium?
Ans✅ ✅: 2 inches superior to EAM
Question: How much difference is there between the OML and IOML
positioning lines?
Ans✅ ✅: 7-8 degrees
Question: Where does the CR exit for a modified parietoacanthial
(modified Waters) projection of the facial bones?
Ans✅ ✅: Acanthion
Question: A patient comes to radiology for a routine study of the
cranium. He is unable to flex his head and neck sufficiently to place the
OML perpendicular to the IR for the AP axial projection. What should the
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technologist do to compensate for this problem without creating
excessive magnification of the occipital bone?
Ans✅ ✅: Use IOML increase angulation by 7 degrees
Question: The 15° PA axial (Caldwell) projection produces an
unobstructed view of the maxilla.
Ans✅ ✅: false
Question: Which one of the following cranial projections will best
demonstrate a possible basilar fracture?
Ans✅ ✅: horizontal beam lateral
Question: Why is the chin extended for an axiolateral oblique projection
of the mandible?
Ans✅ ✅: To prevent superimposition of cervical spine
Question: A pediatric patient enters radiology for a paranasal sinus
series. Because of her age, the child is unable to hold still for the
projections even with the use of immobilization devices. The decision is to
hold the child during each exposure. Which of the following individuals
should be asked to hold the child?
Ans✅ ✅: guardian
Question: What projection of the skull requires the central ray (CR) to
be centered to exit at the glabella?
Ans✅ ✅: PA
Question: A patient comes to radiology with a possible bone cyst within
the squamous portion of the frontal bone. Which of the following
projections would best demonstrate this region with a minimal amount of
distortion of the frontal bone?
Ans✅ ✅: PA with no CR angulation to OML
Question: Which one of the following positioning errors most often
results in a repeat exposure of a cranial position?
