Proc pelvis Flashcards

Refer to the image. What anatomy is labeled as letter C?
iliac crest AIIS ASIS ala of ilium

ASIS

Situation: A patient comes to radiology with a request for a right
hip study. He is from an extended care facility and is confused about
the cause of the injury. The technologist takes an AP pelvis, and when
the lateral frog-leg projection is attempted, the patient complains
loudly about the pain in his affected hip. What should the
technologist do to complete the study?
Continue to position the patient, but move the affected limb more
gently Perform the axiolateral (inferosuperior) projection
Perform the anterior pelvis (Taylor) outlet projection Perform
the AP pelvis projection only

Perform the axiolateral (inferosuperior) projection

The term pelvic girdle refers to the total pelvis including the
sacrum and coccyx. False True

FALSE

Refer to the image. What projection and anatomy of interest is
depicted? AP axial (Taylor); anterior pelvic bones
AP axial (Bridgeman); pelvic inlet AP oblique (modified
Cleaves); femoral necks AP oblique (Cleaves); femoral necks

AP oblique (modified Cleaves); femoral necks

A radiograph of an AP pelvis reveals that the right iliac wing is
foreshortened as compared with the left side. What specific
positioning problem is present on this radiograph? Incorrect CR
centering or angulation Right rotation Left rotation
Right tilt

Left rotation

The internal oblique position of the AP oblique projection (Judet
method) demonstrates the: iliopubic column and anterior rim of
acetabulum ilioischial column and anterior rim of
acetabulum ilioischial column and posterior rim of
acetabulum iliopubic column and posterior rim of acetabulum

iliopubic column and posterior rim of acetabulum

What CR angle is required for the AP axial, inlet projection?
10 to 15 degrees cephalad 30 degrees cephalad 40 degrees
caudad 20 to 30 degrees caudad

40 degrees caudad

The letter B on the illustration below identifies the :
ilioischel column iliopubic column acetabulum
column ischelpubic column

iliopubic column

The angle of the SI joints is ____ degrees relative to the
midsagittal plane. 30 to 35 degrees 10 degrees 25 to
30 degrees 20 degrees

25 to 30 degrees

A radiograph of an AP pelvis reveals that the left obturator foramen
is more open or elongated as compared with the right. What is the
specific positioning error present on this radiograph? Right
rotation Left tilt Incorrect CR centering or
angulation Left rotation

Right rotation

A radiograph of an AP pelvis demonstrates that the right obturator
foramen is foreshortened but the left foramen is open. Which one of
the following positioning errors is present on this radiograph?
Right tilt Excessive CR angle Left rotation Right rotation

Right rotation

Which of the following imaging modalities will best detect early
signs of bone infection of the pelvis? Nuclear medicine
MRI CT Radiography

Nuclear medicine

The below pictured projection is called the: Cleaves
Method Bridgeman Method Judet Method Taylor Method

Bridgeman Method

Unless contraindicated, the lower limb and leg should be internally
rotated for an axiolateral projection of the hip (Danelius-Miller).
How many degrees of rotation are required? 10 degrees 15
degrees 20 degrees 15 to 20 degrees

15 to 20 degrees

Which projection of the hip is shown in the figure above?
axiolateral lateral axiolateral oblique superoinferior

axiolateral

The posterior oblique (Judet method) for the acetabulum requires a
10- to 15-degree rotation of the body. True False

FALSE

Which of the following describes the direction of the central ray for
an axiolateral projection of the hip (Danelius-Miller)?(1)
perpendicular to the IR(2) perpendicular to the long axis of the
femoral neck(3) perpendicular to the long axis of the
femur 1 and 2 1 and 3 1, 2, and 3 2 and 3

1 and 2

A radiograph of an AP axial (Taylor) �outlet� projection reveals that
the obturator foramina are not symmetric. What type of positioning
problem is present on this radiograph? Rotation of the
pelvis Probable fracture of the pubis or ischium The CR
was off-center Tilt of the pelvis

Rotation of the pelvis

A radiograph of an LPO projection for sacroiliac joints reveals that
the ilium is superimposed over the involved joint. What type of
positioning error is present on this radiograph? Excessive
rotation or obliquity Incorrect CR angulation Tilt toward
the right Insufficient rotation or obliquity

Excessive rotation or obliquity

The body is placed at what angle for the AP oblique projection (Judet
method) of the acetabulum? 45 degrees 50 degrees 40
to 50 degrees 45 to 60 degrees

45 degrees

The following projection is being demonstrated in the image below:
Ilium Projection Inlet Projection Outlet
Projection Acetabulum Projection

Inlet Projection

For the AP oblique femoral necks (modified Cleaves method), the
central ray is directed: 35 degrees 45 degrees 0
degrees 15 degrees

0 degrees

How much is the central ray angled for the AP oblique projection
(Judet method) of the acetabulum? 10 degrees 15
degrees 12 degrees 0 degrees

0 degrees

Examine this AP oblique (Judet) image of the right hip obtained with
the patient positioned for the internal oblique. What is the anatomy
of interest? anterior acetabular rim and ilioischial
column posterior acetabular rim and ilioischial column
anterior acetabular rim and iliopubic column posterior
acetabular rim and iliopubic column

posterior acetabular rim and iliopubic column

The following projection is being demonstrated in the image below:
Bridgeman Method Projection Clements-Nakayama
Projection Taylor Method Projection Judet Projection Projection

Bridgeman Method Projection

How much should the thighs be abducted for the AP oblique projection
of the femoral necks (modified Cleaves method)? 30 degrees
10 degrees 45 degrees 20 degrees

45 degrees

Which bones fuse to form the acetabulum? Pubis, ilium, and
sacrum Ischium and pubis Ischium, pubis, and ilium
Ilium and ischium

Ischium, pubis, and ilium

Where is the IR centered for an AP pelvis? at the level of the
ASIS 2 inches below the iliac crest midway between the
ASIS and the pubic symphysis at the level of the pubic symphysis

midway between the ASIS and the pubic symphysis

Using the above hip localization method, the femoral head can be
located: 1� inches (4 cm) below the midpoint of the imaginary
line between the two bony landmarks. 1 inch (2.5 cm) below the
midpoint of the imaginary line between the two bony landmarks.
2� inches (6 to 7 cm) below the midpoint of the imaginary line between
the two bony landmarks. at the level of the symphysis pubis.

1� inches (4 cm) below the midpoint of the imaginary line between the
two bony landmarks.

Which bone of the pelvic girdle forms the anterior inferior
aspect? Ischium Pubis Sacrum Ilium

Pubis

The following position is demonstrating which of the following
Methods ?
Bridgeman Method Jedet Method Taylor Method
Clements-Nakayama Method

Clements-Nakayama Method

Which of the following methods demonstrate the hip in an axiolateral
projection? Danelius-Miller modified Cleaves
Chassard-Lapin� Lauenstein, Hickey

Danelius-Miller

How much is the image receptor tilted from the horizontal for the
modified axiolateral (Clements-Nakayama) projection? 5 to 10
degrees None. The IR must be keep perpendicular to the
tabletop 25 to 30 degrees 15 to 20 degrees

15 to 20 degrees

The respiration phase for the axiolateral projection of the hip
(Danelius-Miller) is: inspiration shallow breathing
expiration suspended respiration

suspended respiration

Examine this AP oblique (Judet) image of the right hip obtained with
the patient positioned for the internal oblique. What patient position
is depicted in this image? 45 degrees LPO 45
degrees RAO 45 degrees RPO 45 degrees LAO

45 degrees LPO

Refer to the image. What anatomy is labeled as letter B?
lesser trochanter iliac crest acetabulum femoral head

lesser trochanter

Situation: A patient comes to the ED with a possible pelvic ring
fracture. The initial AP pelvis projection is inconclusive. What other
projection can be taken to assist with the diagnosis? Modified
bilateral axiolateral projections AP, bilateral frog-leg
projection AP axial inlet projection Posterior oblique
positions for SI joints

AP axial inlet projection

The image receptor must be placed parallel to the femoral neck for
the axiolateral (inferosuperior) projection of the hip.
False True

TRUE

A radiograph of a right SI joint demonstrates it open and clearly
seen. Which of the following positions was performed? LAO
RPO LPO AP

LPO

The below pectured projection is called the :
Cleaves Method Bridgeman Method Taylor Method
Judet Method

Taylor Method

The radiograph below best demonstrates which area the best:
acetabulum column ilioischel column ischeopubic
column iliopubic column

ilioischel column

A radiograph of an axiolateral (inferosuperior) projection of the hip
reveals a soft tissue artifact seen across the affected hip. This
artifact prevents a clear view of the femoral head and neck. What must
the technologist do to eliminate this artifact or its effect during
the repeat exposure? Slightly rotate the patient toward the
affected side and angle 5 degrees caudad. Increase the elevation
and flexion of the patient�s unaffected leg. Ensure that the CR
is centered to the grid to prevent grid cutoff. Increase the kV.

Increase the elevation and flexion of the patient�s unaffected leg.

Which of the following describes the position of the IR for the
axiolateral projection of the hip (Danelius-Miller)?(1) parallel
with the long axis of the femoral neck(2) its upper border in
the crease above the iliac crest(3) perpendicular to the long
axis of the femur 2 and 3 1 and 3 1 and 2 1,
2, and 3

1 and 2

Which of the following lateral hip projections cannot be performed on
a trauma patient with a possible hip fracture? Judet
method Danelius-Miller Clements-Nakayama Modified
Cleaves method

Modified Cleaves method

Which of the following methods will demonstrate the hip in a lateral
projection? Danelius-Miller Cleaves modified
Cleaves Lauenstein, Hickey

Lauenstein, Hickey

Situation: A patient enters the ED with a possible separation of the
symphysis pubis due to trauma. The AP pelvis projection is
inconclusive for determining the extent of the injury. What other
projection can be taken to evaluate this region? AP axial
�inlet� projection Axiolateral (inferosuperior) projection
Posterior oblique (Judet) projection AP axial (Taylor) outlet projection

AP axial (Taylor) outlet projection

The proper name of the method used for the unilateral frog-leg
projection is the: Taylor. Grashey. modified
Cleaves. Danelius-Miller.

modified Cleaves.

Which of the following projections can be performed with one exposure
if a compensating filter is used? axiolateral hip
(Danelius-Miller method) AP hip AP oblique acetabulum
(Judet method) AP oblique ilium

axiolateral hip (Danelius-Miller method)

The radiograph below best demonstrates which area the best:
ischeopubic column iliopubic column ilioischel
column acetabulum column

iliopubic column

Refer to the image. What projection (method) is demonstrated?
mediolateral (Lauenstein) AP oblique (modified
Cleaves) axiolateral (Danelius-Miller) AP oblique (Judet)

axiolateral (Danelius-Miller)

A radiograph of an axiolateral (inferosuperior) projection reveals
that there is an excessive amount of grid lines present. A 6:1 linear
grid was used. Which of the following points will correct this problem
on the repeat exposure? Keep the image receptor perpendicular to
the femoral neck. Decrease the SID. Keep the image
receptor parallel to the femoral neck. Use a screen rather than
a grid.

Keep the image receptor parallel to the femoral neck.

Refer to the image. What positioning error is evident?
The knees were not flexed to reduce lordotic curve. The lower
limbs were not externally rotated. None. This image meets all
evaluation criteria. The lower limbs were not internally rotated

The lower limbs were not internally rotated

The following projection is being demonstrated in the image below :
Acetabulum Projection Outlet Projection Inlet
Projection Ilium Projection

Outlet Projection

Which of the following bony structures cannot be palpated?
ASIS Symphysis pubis Ischial spine Ischial tuberosity

Ischial spine

Situation: A patient enters the ED with possible bilateral fractured
hips. Which of the following routines should be performed? AP
pelvis and axiolateral (inferosuperior) projections for both
hips AP pelvis and bilateral frog-leg projections AP
pelvis and posterior oblique (Judet) projections AP pelvis and
modified axiolateral (Clements-Nakayama method) projections for both hips

AP pelvis and modified axiolateral (Clements-Nakayama method)
projections for both hips

The following projection is being demonstrated in the image below :
Clements-Nakayama Projection Judet Projection Projection
Bridgeman Method Projection Taylor Method Projection

Taylor Method Projection

Which of the following devices are necessary to perform an
axiolateral projection of the hip (Danelius-Miller)?(1)
sandbags(2) leg support device(3) vertical IR holder
2 and 3 1 and 3 1 and 2 1, 2, and 3

1, 2, and 3

Where is the central ray directed for the AP oblique projection
(modified Cleaves) of the femoral necks? 1 inch inferior to the
pubic symphysis at the pubic symphysis 2 inches superior
to the pubic symphysis 1 inch superior to the pubic symphysis

1 inch superior to the pubic symphysis

In the below illustration, the Right acetabulum is demonstated in the
which of the follolwing
None of the above Internal Oblique Position Exteranl
Oblique Position Neutral Oblique Position

Internal Oblique Position

Which of the following projections provides the greatest amount of
gonadal dose for a male patient (without the use of shielding)?
AP hip projection Axiolateral (inferosuperior) projection
AP bilateral frog-leg (modified Cleaves) projection AP pelvis projection

Axiolateral (inferosuperior) projection

The below pictured projection is called the :
Taylor Method Bridgeman Method Judet Method
Cleaves Method

Judet Method

Which of the following positions will best demonstrate the superior
and posterior rim of the acetabulum? AP axial (Taylor
method) Posterior oblique (Judet method) Modified
axiolateral (Clements-Nakayama method) RPO and LPO projections

Posterior oblique (Judet method)

Refer to the image. What anatomy is labeled as letter C?
femoral neck acetabulum iliac crest femoral head

femoral head

The AP axial projection (Bridgeman method) requires the central ray
be directed: 40 degrees caudad 20 to 35 degrees caudad for
males; 30 to 45 degrees caudad for females perpendicular
40 degrees cephalad

40 degrees caudad

What is the central-ray entrance point for the AP oblique projection
(Judet method) of the acetabulum? 2 inches inferior to the
ASIS 3 inches superior to the ASIS 3 inches inferior to
the ASIS 2 inches superior to the ASIS

2 inches inferior to the ASIS

Which part of the acetabulum is being best demonstrated ?
Anterior rim of the acetabulum Posterior rim of the acetabulum

Posterior rim of the acetabulum

The use of the 80 kV technique (as opposed to 90) with a
corresponding mAs change for an AP pelvis projection will result in
higher contrast but will have what effect on the male and female
gonadal dose? Will reduce dose by 10% to 15% Will reduce
dose by 20% to 30% Will increase dose by 20% to 30% None
of the above; difference is not measurable

Will increase dose by 20% to 30%

Which part of the acetabulum is being best demonstrated ?
Anterior rim of the acetabulum Posterior rim of the acetabulm

Anterior rim of the acetabulum

During a repeat study of the AP axial (Taylor) outlet projection,
both obturator foramina are symmetric but foreshortened. Which of the
following positioning modifications must be performed to correct this
error? Correct for rotation. Use a perpendicular CR.
Increase the cephalic CR angulation. Increase the caudal CR angulation.

Increase the cephalic CR angulation.

What CR angle must be used for an AP axial (Taylor method) �outlet�
projection for a male patient? 15 to 20 degrees cephalad
20 to 35 degrees cephalad 20 to 35 degrees caudad 0
degrees (CR perpendicular to the image receptor)

20 to 35 degrees cephalad

The radiograph below best demonstrates the Right hip in which of the
following None of the above Exteranl Oblique
Position Internal Oblique Position Neutral Oblique Position

Exteranl Oblique Position

A radiograph of an AP pelvis reveals that the lesser trochanters are
not visualized. This pelvis projection was performed for nontraumatic
reasons. What should the technologist do (if anything) to correct this
on the repeat exposure? Do nothing. Accept the radiograph and
don�t repeat the exposure. Ensure that the ASIS is an equal
distance from the tabletop. Angle the CR 10 to 15 degrees
cephalad. Rotate the lower limbs more internally.

Do nothing. Accept the radiograph and don�t repeat the exposure.

The lesser sciatic notch is an aspect of the: sacrum.
ilium. ischium. pubis.

ischium

Which of the following projections would be best for a patient with
trauma to both proximal femurs (in addition to the AP pelvis)?
Modified axiolateral (Clements-Nakayama) Axiolateral
(inferosuperior) Anterior oblique (Teufel) AP axial (Taylor)

Modified axiolateral (Clements-Nakayama)

How much obliquity of the body is required for posterior oblique
positions for the sacroiliac joints? 10 to 15 degrees 45
degrees 25 to 30 degrees 60 to 70 degrees

25 to 30 degrees

The letter A on the illustration below identifies the :
iliopubic column ischelpubic column acetabulum
column ilioischel column

ilioischel column

The LPO position for sacroiliac joints will best demonstrate the
right joint. True False

True False

Situation: A patient enters ED with a possible pelvic ring fracture
due to a MVA. The initial pelvis projections do not reveal any
fracture or dislocation, but the ED physician is concerned about a
possible right acetabular fracture. Which of the following projections
will best demonstrate the right acetabulum? Axiolateral
inferosuperior projection (Danelius-Miller method) AP axial
inlet projection Modified axiolateral projection
(Clements-Nakayama method) Posterior oblique pelvis projection
(Judet method)

Posterior oblique pelvis projection (Judet method)

Only a small part of the lesser trochanter, if any, will be visible
on a well-positioned axiolateral (inferosuperior) lateral hip.
True False

TRUE

The external oblique position of the AP oblique projection (Judet
method) demonstrates the: ilioischial column and anterior rim of
acetabulum iliopubic column and posterior rim of
acetabulum iliopubic column and anterior rim of acetabulum
ilioischial column and posterior rim of acetabulum

ilioischial column and anterior rim of acetabulum

Refer to the image. What anatomy is labeled as letter A?
greater trochanter femoral neck femoral head acetabulum

acetabulum