Positioning Chapter 7

50問 • 1年前

ユーザ名非公開

通報

問題一覧

What is the central-ray angulation for the axial (plantodorsal) projection of the calcaneus?

40 degrees

For an axial projection of the calcaneus, the ankle should be dorsiflexed so the plantar surface of the foot is

90 degrees from the plane of the IR.

The central-ray angulation for a lateral projection of the calcaneus is

0 degrees

Which of the following is the essential lateral projection of the calcaneus?

Lateral (mediolateral)

The central-ray angulation for the AP ankle projection is

0 degrees

For an AP projection of the ankle, the central ray must enter the

ankle joint, midway between the malleoli.

Which of the following is not clearly demonstrated on an AP projection of the ankle?

Ankle mortise

To prevent lateral rotation, how should the foot be positioned for a lateral projection of the ankle?

In dorsiflexion

The central-ray angle for a lateral projection of the ankle is

0 degrees

For a lateral projection of the ankle, the central ray must enter the

medial malleolus.

Where will the fibula be located on a properly positioned lateral radiograph of the ankle?

Over the posterior half of the tibia

All of the following must be rotated for all oblique projections of the ankle, except

pelvis.

To demonstrate the ankle mortise, the leg and foot should be rotated medially how many degrees?

15 to 20

When the malleoli of the ankle are positioned parallel with the IR, the ankle is in position for which projection?

AP oblique, 15- to 20-degree medial rotation for the ankle mortise

The medial and lateral oblique projections of the ankle require the leg and foot to be rotated how many degrees?

Which ankle projection will clearly demonstrate the ankle mortise in profile?

AP oblique, 15- to 20-degree internal rotation

The central-ray angulation for an AP oblique projection of the ankle is

0 degrees

Which projection will clearly demonstrate the joint spaces between the talus and both malleoli?

AP oblique, 15- to 20-degree internal rotation

Which projections of the ankle are performed on a patient following an inversion or eversion injury?

AP stress studies

What is the central-ray angle for an AP projection of the leg?

0 degrees

What is the position of the femoral condyles when the leg is properly positioned for an AP projection?

Parallel to the IR

How far should the IR or collimated field extend beyond the ankle or knee joint for an AP projection of the leg?

1 to 1.5 inches

Often, the leg is too long to fit on one IR for radiographs. Which joint or joints should be included on the IR when the site of a lesion is unknown?

Both joints on two IRs

Where is the IR centered for an AP projection of the knee?

1/2 inch below the patellar apex

An alternative method for a lateromedial projection of the leg when a patient cannot be turned from the supine position is

perform the projection cross-table using a horizontal central ray.

When the knee is properly positioned for an AP projection

the patella is completely superimposed on the femur.

Where is the central ray directed for an AP projection of the knee?

1/2 inch below the patellar apex

When the ASIS-to-tabletop measurement is between 19 and 24 cm, the central-ray angulation for an AP knee is

0 degrees

When the ASIS-to-tabletop measurement is greater than 24 cm, the central-ray angulation for an AP knee is

5 degrees cephalad.

When the ASIS-to-tabletop measurement is less than 19 cm, the central-ray angulation for an AP knee is

5 degrees caudad.

How much should the leg be flexed for a lateral projection of the knee?

20 to 30 degrees

Which of the following will ensure that the knee is in proper position for a lateral projection? 1. Epicondyles perpendicular to the IR 2. Patella perpendicular to the IR 3. Leg flexed 20 to 30 degrees

1, 2, and 3

To prevent fragment separation in an unhealed patellar fracture, the knee should not be flexed more than _____.

10 degrees

The central-ray angulation for a lateral projection of the knee is

5 to 7 degrees cephalad.

Which of the following projections of the knee best demonstrates the narrowing of a joint space?

AP of both knees with weight-bearing

Valgus and varus deformities of the knee can be evaluated with which of the following projections?

AP, bilateral weight-bearing

Leach et al. recommended which of the following projections to be routinely included in the radiographic examination of arthritic knees?

AP, bilateral weight-bearing

The central-ray angle for an AP, bilateral weight-bearing knee is

0 degrees

The central-ray angle for AP oblique projections of the knee is

variable, depending on the ASIS-to-tabletop distance.

For an AP oblique projection of the knee, the limb is rotated _____ degrees.

Which of the following is clearly demonstrated on an AP oblique projection of the knee in medial rotation?

Tibiofibular articulation

The patient position and central ray shown in this figure will demonstrate the

intercondylar fossa.

How is the central ray directed for the PA axial projection (Holmblad method) of the intercondylar fossa?

Perpendicular to the lower leg

Which of the following positions can be used to demonstrate the intercondylar fossa using the Holmblad method? 1. Standing (horizontal central ray) 2. Kneeling on the table (vertical central ray) 3. Standing with knee on stool (vertical central ray)

1, 2, and 3

The patient position and central-ray method demonstrated in this figure is the

Camp-Coventry (intercondylar fossa).

In which position is the patient placed for a PA projection of the patella?

Prone

To place the patella parallel with the plane of the IR for a PA projection, the heel must be rotated

5 to 10 degrees laterally.

What is the central-ray angle for a PA projection of the patella?

0 degrees

Where should the central ray be directed for a PA projection of the patella?

Midpopliteal area

How much is the knee flexed for a lateral projection of the patella?

5 to 10 degrees

Physics Chapter 1

Physics Chapter 1

Physic Chapter 7

Physic Chapter 7

Physics Chapter 8

Physics Chapter 8

Physics Chapter 9

Physics Chapter 9

Physics Chapter 10

Physics Chapter 10

Physic Chapter 15

Physic Chapter 15

Physics Chapter 16

Physics Chapter 16

Physics Chapter 22

Physics Chapter 22

Physics Chapter 25

Physics Chapter 25

Physics Chapter 35

Physics Chapter 35

Physics Chapter 37

Physics Chapter 37

Physics Chapter 40

Physics Chapter 40

Positioning Chapter 1

ユーザ名非公開 · 35問 · 1年前

Positioning Chapter 1

35問 • 1年前

ユーザ名非公開

Positioning Chapter 2

ユーザ名非公開 · 100問 · 1年前

Positioning Chapter 2

100問 • 1年前

ユーザ名非公開

Positioning Chapter 3

ユーザ名非公開 · 88問 · 1年前

Positioning Chapter 3

88問 • 1年前

ユーザ名非公開

Positioning Chapter 4

ユーザ名非公開 · 31問 · 1年前

Positioning Chapter 4

31問 • 1年前

ユーザ名非公開

Positioning Chapter 5

ユーザ名非公開 · 93問 · 1年前

Positioning Chapter 5

93問 • 1年前

ユーザ名非公開

Positioning Chapter 6

ユーザ名非公開 · 55問 · 1年前

Positioning Chapter 6

55問 • 1年前

ユーザ名非公開

Positioning Chapter 7

ユーザ名非公開 · 50問 · 1年前

Positioning Chapter 7

50問 • 1年前

ユーザ名非公開

問題一覧

What is the central-ray angulation for the axial (plantodorsal) projection of the calcaneus?

40 degrees

For an axial projection of the calcaneus, the ankle should be dorsiflexed so the plantar surface of the foot is

90 degrees from the plane of the IR.

The central-ray angulation for a lateral projection of the calcaneus is

0 degrees

Which of the following is the essential lateral projection of the calcaneus?

Lateral (mediolateral)

The central-ray angulation for the AP ankle projection is

0 degrees

For an AP projection of the ankle, the central ray must enter the

ankle joint, midway between the malleoli.

Which of the following is not clearly demonstrated on an AP projection of the ankle?

Ankle mortise

To prevent lateral rotation, how should the foot be positioned for a lateral projection of the ankle?

In dorsiflexion

The central-ray angle for a lateral projection of the ankle is

0 degrees

For a lateral projection of the ankle, the central ray must enter the

medial malleolus.

Where will the fibula be located on a properly positioned lateral radiograph of the ankle?

Over the posterior half of the tibia

All of the following must be rotated for all oblique projections of the ankle, except

pelvis.

To demonstrate the ankle mortise, the leg and foot should be rotated medially how many degrees?

15 to 20

When the malleoli of the ankle are positioned parallel with the IR, the ankle is in position for which projection?

AP oblique, 15- to 20-degree medial rotation for the ankle mortise

The medial and lateral oblique projections of the ankle require the leg and foot to be rotated how many degrees?

Which ankle projection will clearly demonstrate the ankle mortise in profile?

AP oblique, 15- to 20-degree internal rotation

The central-ray angulation for an AP oblique projection of the ankle is

0 degrees

Which projection will clearly demonstrate the joint spaces between the talus and both malleoli?

AP oblique, 15- to 20-degree internal rotation

Which projections of the ankle are performed on a patient following an inversion or eversion injury?

AP stress studies

What is the central-ray angle for an AP projection of the leg?

0 degrees

What is the position of the femoral condyles when the leg is properly positioned for an AP projection?

Parallel to the IR

How far should the IR or collimated field extend beyond the ankle or knee joint for an AP projection of the leg?

1 to 1.5 inches

Often, the leg is too long to fit on one IR for radiographs. Which joint or joints should be included on the IR when the site of a lesion is unknown?

Both joints on two IRs

Where is the IR centered for an AP projection of the knee?

1/2 inch below the patellar apex

An alternative method for a lateromedial projection of the leg when a patient cannot be turned from the supine position is

perform the projection cross-table using a horizontal central ray.

When the knee is properly positioned for an AP projection

the patella is completely superimposed on the femur.

Where is the central ray directed for an AP projection of the knee?

1/2 inch below the patellar apex

When the ASIS-to-tabletop measurement is between 19 and 24 cm, the central-ray angulation for an AP knee is

0 degrees

When the ASIS-to-tabletop measurement is greater than 24 cm, the central-ray angulation for an AP knee is

5 degrees cephalad.

When the ASIS-to-tabletop measurement is less than 19 cm, the central-ray angulation for an AP knee is

5 degrees caudad.

How much should the leg be flexed for a lateral projection of the knee?

20 to 30 degrees

1, 2, and 3

To prevent fragment separation in an unhealed patellar fracture, the knee should not be flexed more than _____.

10 degrees

The central-ray angulation for a lateral projection of the knee is

5 to 7 degrees cephalad.

Which of the following projections of the knee best demonstrates the narrowing of a joint space?

AP of both knees with weight-bearing

Valgus and varus deformities of the knee can be evaluated with which of the following projections?

AP, bilateral weight-bearing

Leach et al. recommended which of the following projections to be routinely included in the radiographic examination of arthritic knees?

AP, bilateral weight-bearing

The central-ray angle for an AP, bilateral weight-bearing knee is

0 degrees

The central-ray angle for AP oblique projections of the knee is

variable, depending on the ASIS-to-tabletop distance.

For an AP oblique projection of the knee, the limb is rotated _____ degrees.

Which of the following is clearly demonstrated on an AP oblique projection of the knee in medial rotation?

Tibiofibular articulation

The patient position and central ray shown in this figure will demonstrate the

intercondylar fossa.

How is the central ray directed for the PA axial projection (Holmblad method) of the intercondylar fossa?

Perpendicular to the lower leg

1, 2, and 3

The patient position and central-ray method demonstrated in this figure is the

Camp-Coventry (intercondylar fossa).

In which position is the patient placed for a PA projection of the patella?

Prone

To place the patella parallel with the plane of the IR for a PA projection, the heel must be rotated

5 to 10 degrees laterally.

What is the central-ray angle for a PA projection of the patella?

0 degrees

Where should the central ray be directed for a PA projection of the patella?

Midpopliteal area

How much is the knee flexed for a lateral projection of the patella?

5 to 10 degrees