Head Work RTBC UPDATED ACTUAL
Exam Questions and CORRECT Answers
What is the recommended source-to-image distance (SID) for a
submentovertical (SMV) projection of the skull?
a. 40 inches (102 cm)
b. 48 inches (122 cm)
c. 60 inches (152 cm)
d. 72 inches (183 cm) - CORRECT ANSWER - a. 40 inches (102 cm)
Which cranial positioning line is parallel to the IR when positioning the patient for a
submentovertical (SMV) skull radiograph?
A. orbtiomeatal line
B. infraorbitomeatal line
C. mentomeatal line
D. acanthiomeatal line - CORRECT ANSWER - B. infraorbitomeatal line
In a diagnostic lateral projection of the nasal bones, which anatomical structures are visualized?
A. nasal bone and anterior nasal spine
B. nasal bone and frontal nasal structure
C. nasal bone
D. nasal bone, anterior nasal spine, and frontal nasal suture - CORRECT ANSWER - D.
nasal bone, anterior nasal spine, and frontal nasal suture
What is the recommended source-to-image distance (SID) for a parietoacanthial projection,
Waters method, of the nasal bones?
A. 40 inches
B. 48 inches
C. 60 inches
, D. 72 inches - CORRECT ANSWER - A. 40 inches
For the lateral projection of the nasal bones, the inter pupillary line )IPL) is:
A. at 37 degree angle to the image receptor
B. at a 45 degree angle to the image receptor
C. parallel to the image receptor
D. perpendicular to the image receptor - CORRECT ANSWER - D. perpendicular to the
image receptor
What degree and direction of angulation is used for the central
ray (CR) for an anteroposterior (AP) axial projection, Towne
method, of the skull if the patient is able to depress their chin,
aligning the orbitomeatal line (OML) perpendicular to the image
receptor (IR)?
a. 30 degrees caudal
b. 37 degrees caudal
c. 30 degrees cephalad
d. 37 degrees cephalad - CORRECT ANSWER - a. 30 degrees caudal
Which cranial positioning line should be perpendicular to the
image receptor (IR) if the patient is unable to flex their neck for
an anteroposterior (AP) axial projection, Towne method, of the
skull?
a. Orbitomeatal line (OML)
b. Infraorbitomeatal line (IOML)
c. Acanthiomeatal line (AML)
d. Mentomeatal line (MML) - CORRECT ANSWER - b. Infraorbitomeatal line (IOML)
Exam Questions and CORRECT Answers
What is the recommended source-to-image distance (SID) for a
submentovertical (SMV) projection of the skull?
a. 40 inches (102 cm)
b. 48 inches (122 cm)
c. 60 inches (152 cm)
d. 72 inches (183 cm) - CORRECT ANSWER - a. 40 inches (102 cm)
Which cranial positioning line is parallel to the IR when positioning the patient for a
submentovertical (SMV) skull radiograph?
A. orbtiomeatal line
B. infraorbitomeatal line
C. mentomeatal line
D. acanthiomeatal line - CORRECT ANSWER - B. infraorbitomeatal line
In a diagnostic lateral projection of the nasal bones, which anatomical structures are visualized?
A. nasal bone and anterior nasal spine
B. nasal bone and frontal nasal structure
C. nasal bone
D. nasal bone, anterior nasal spine, and frontal nasal suture - CORRECT ANSWER - D.
nasal bone, anterior nasal spine, and frontal nasal suture
What is the recommended source-to-image distance (SID) for a parietoacanthial projection,
Waters method, of the nasal bones?
A. 40 inches
B. 48 inches
C. 60 inches
, D. 72 inches - CORRECT ANSWER - A. 40 inches
For the lateral projection of the nasal bones, the inter pupillary line )IPL) is:
A. at 37 degree angle to the image receptor
B. at a 45 degree angle to the image receptor
C. parallel to the image receptor
D. perpendicular to the image receptor - CORRECT ANSWER - D. perpendicular to the
image receptor
What degree and direction of angulation is used for the central
ray (CR) for an anteroposterior (AP) axial projection, Towne
method, of the skull if the patient is able to depress their chin,
aligning the orbitomeatal line (OML) perpendicular to the image
receptor (IR)?
a. 30 degrees caudal
b. 37 degrees caudal
c. 30 degrees cephalad
d. 37 degrees cephalad - CORRECT ANSWER - a. 30 degrees caudal
Which cranial positioning line should be perpendicular to the
image receptor (IR) if the patient is unable to flex their neck for
an anteroposterior (AP) axial projection, Towne method, of the
skull?
a. Orbitomeatal line (OML)
b. Infraorbitomeatal line (IOML)
c. Acanthiomeatal line (AML)
d. Mentomeatal line (MML) - CORRECT ANSWER - b. Infraorbitomeatal line (IOML)
