Radiographic procedures Chapter 9 Questions
and Answers| Latest Update
Gonadal shielding must always be used on female patients for an AP lumbar spine projection
✅false
Bone densitometry is accurate to within ✅1% and the radiation skin dose is very low
What type of CR angulation is required for an AP axial projection of the coccyx ✅10 degrees
caudad
What type of lesion is destructive with irregular margins and increased density ✅osteoblastic
(increased density) osteolytic (irregular margins) type of metastases
An abnormal lateral curvature of the spine is a congenital condition is termed ✅scoliosis
A radiograph of a lateral projection of the lumbar spine reveals that the mid- to lower-
intervertebral joint spaces are not open. The patient's waist was supported. What
modification/modifications will help open these joint spaces during the repeat exposure
✅increase waist support and/or angle CR 5-8 degrees caudal
A radiograph of an AP axial sacrum reveals that it is foreshortened and the sacral foramina are
not clearly seen. The patient was in an AP supine position, and the technologist angled the CR
10° cephalad. What specific positioning error is present on this radiograph ✅Insufficient CR
angulation
A radiograph of an AP axial L5-S1 projection reveals that the joint space is not open. The
following factors were used on this female patient: 80 kV, 40-inch (102 cm) SID, grid, 35°
, caudad angle, and CR centered to the ASIS. What factor or factors needs to be modified to
produce a more diagnostic image ✅change the direction of the CR angulation
A young female patient comes to radiology for a scoliosis study. The patient has had this series
performed frequently. How much will the breast dose be decreased if a PA rather than an AP
projection is taken ✅90% reduction
What type of fracture is due to a hyperflexion force injury ✅Chance fx
The nose of the Scottie dog is on what part of the vertebra ✅transverse process
For the AP right and left bending projections of the scoliosis series the pelvis must remain ✅as
stationary as possible. The pelvis acts as a fulcrum (pivot point) during changes in position.
How much obliquity of the body is required for posterior oblique positions for the sacroiliac
joints ✅25-30° posterior oblique
A radiograph of the left sacroiliac joint demonstrates it open and clearly seen. What positions
could have been performed ✅RPO for Lt. side (upside) SI joints
Where is the CR centered for posterior oblique projections of the SI joints ✅CR perpendicular
to IR, direct CR 1" medial to upside ASIS, center IR to CR
Zygapophyseal Joints ✅classification is Synovial, mobility is Diarthrodial, movement is Plane
(gliding)
Intervertebral Joints ✅classification is Cartilaginous, mobility is Amphiarthrodial (slightly
moveable), no movement type
and Answers| Latest Update
Gonadal shielding must always be used on female patients for an AP lumbar spine projection
✅false
Bone densitometry is accurate to within ✅1% and the radiation skin dose is very low
What type of CR angulation is required for an AP axial projection of the coccyx ✅10 degrees
caudad
What type of lesion is destructive with irregular margins and increased density ✅osteoblastic
(increased density) osteolytic (irregular margins) type of metastases
An abnormal lateral curvature of the spine is a congenital condition is termed ✅scoliosis
A radiograph of a lateral projection of the lumbar spine reveals that the mid- to lower-
intervertebral joint spaces are not open. The patient's waist was supported. What
modification/modifications will help open these joint spaces during the repeat exposure
✅increase waist support and/or angle CR 5-8 degrees caudal
A radiograph of an AP axial sacrum reveals that it is foreshortened and the sacral foramina are
not clearly seen. The patient was in an AP supine position, and the technologist angled the CR
10° cephalad. What specific positioning error is present on this radiograph ✅Insufficient CR
angulation
A radiograph of an AP axial L5-S1 projection reveals that the joint space is not open. The
following factors were used on this female patient: 80 kV, 40-inch (102 cm) SID, grid, 35°
, caudad angle, and CR centered to the ASIS. What factor or factors needs to be modified to
produce a more diagnostic image ✅change the direction of the CR angulation
A young female patient comes to radiology for a scoliosis study. The patient has had this series
performed frequently. How much will the breast dose be decreased if a PA rather than an AP
projection is taken ✅90% reduction
What type of fracture is due to a hyperflexion force injury ✅Chance fx
The nose of the Scottie dog is on what part of the vertebra ✅transverse process
For the AP right and left bending projections of the scoliosis series the pelvis must remain ✅as
stationary as possible. The pelvis acts as a fulcrum (pivot point) during changes in position.
How much obliquity of the body is required for posterior oblique positions for the sacroiliac
joints ✅25-30° posterior oblique
A radiograph of the left sacroiliac joint demonstrates it open and clearly seen. What positions
could have been performed ✅RPO for Lt. side (upside) SI joints
Where is the CR centered for posterior oblique projections of the SI joints ✅CR perpendicular
to IR, direct CR 1" medial to upside ASIS, center IR to CR
Zygapophyseal Joints ✅classification is Synovial, mobility is Diarthrodial, movement is Plane
(gliding)
Intervertebral Joints ✅classification is Cartilaginous, mobility is Amphiarthrodial (slightly
moveable), no movement type
