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Rad Posi 1 > Pelvis > Flashcards

Pelvis Flashcards

1
Q

Anatomy: Pelvis and Upper Femora
AP Projection
Patient Position

A
  • Supine
    Part Position:
  • Center MSP to the midline of the grid
  • Medially rotate feet and lower limbs 15 to 20 degrees (if no trauma or other pathological factor)
  • Heels placed 8 - 10 inches (20 - 24 cm) apart
  • Places femoral necks parallel with IR
  • Equal ASIS-to-table distance on both
    sides
  • Ensures the pelvis is not rotated
  • Upper border of IR or light field 1 to 11⁄2 inches (2.5 to 3,8 cm) above crests
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2
Q

Anatomy: Pelvis & Upper Femora
AP Projection
Central Ray

A

Perpendicular to IR, 2 inches (5 cm) inferior to the ASIS and 2 inches (5 cm) superior to the pubic symphysis

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3
Q

Anatomy: Pelvis & Upper Femora
AP Projection
Collimation

A
  • Radiation field 14 × 17 inch (35 x
    43 cm) on the collimator.
  • For smaller patients, collimate 1 inch (2.5 cm) beyond the skin shadow on the sides
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4
Q

Pelvis and the head, neck,
trochanters, and proximal one-third or one-fourth of the femur.

A

AP Projection

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5
Q

Anatomy: Proximal Femura & Necks
AP Oblique (Modified Cleaves Method)
Central Ray

A

Bilateral: Perpendicular to MSP at level 1 inch (2.5 cm) above pubic symphysis
Unilateral: Perpendicular to femoral neck

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6
Q
  • Bilateral image shows AP
    oblique
    projection
  • Femoral heads
  • Femoral necks
  • Trochanteric
    areas
A

AP Oblique (Modified Cleaves Method)

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7
Q

Anatomy: Hip
Projections

A

•AP Projection
•Lateral Hip Lauenstein & Hickey (Mediolateral)
•Axiolateral Hip (Danelius-Mill er Method)
•Modified Lateral Hip (Clements-Na kayama Modification)

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8
Q

Anatomy:Hip

AP Projection
Central Ray

A
  • Perpendicular to femoral neck
  • Use localization technique
  • CR placed approximately 2.5
    inches (6.4 cm) distal on a line drawn perpendicular to the midpoint of a line between the ASIS and the pubic
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9
Q
  • Head
  • Neck
  • Trochanters
    -Proximal
    one-third of the body of the femur
A

AP Projection

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10
Q

Anatomy: Hip

Lateral Hip Lauenstein & Hickey (Mediolateral)
Central Ray

A

Perpendicular through hip joint (Lauenstein method)
Enters midway between ASIS and pubic symphysis
Cephalic angulation of 20 - 25 degrees entering an additional 1 inch (2.5 cm) inferior (Hickey method)

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11
Q
  • Lateral projection of hip
  • Acetabulum
  • Proximal end of femur
  • Relationship of the femoral head to the acetabulum
A

Lateral Hip Lauenstein & Hickey (Mediolateral)

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12
Q

Anatomy: Hip
Axiolateral Hip (Danelius-Mill er Method)
Central Ray

A

Horizontal and perpendicular to
long axis of femoral neck

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13
Q
  • Acetabulum
  • Head
  • Neck
  • Trochanters
A

Axiolateral Hip (Danelius-Mill er Method)

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14
Q

Anatomy: Hip
Modified Lateral Hip (Clements-Na kayama Modification)

Central Ray

A

15 degrees posteriorly and
perpendicular to the femoral neck

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15
Q
  • Acetabulum
  • Proximal femur in lateral profile
  • Head
  • Neck
  • Trochanters
A

Modified Lateral Hip (Clements-Na kayama Modification)

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16
Q

Anatomy: Acetabulum

AP Oblique Projection Judet Method
Central Ray

A

Internal Oblique
- Perpendicular to IR
- Enters 2 Inches (5 cm) inferior to
ASIS of a ected
side
External Oblique
- Perpendicular to IR
- Enters pubic symphysis

17
Q

Shows the Acetabular rim

A

AP Oblique Projection Judet Method

18
Q

Anatomy: Anterior Pelvic Bones
Projections

A

AP Axial Projection (Outlet) Taylor Method

Superoinferior Axial Projection (Inlet) Bridgman Method

19
Q

Anatomy: Anterior Pelvic Bones

AP Axial Projection (Outlet) Taylor Method
Central Ray

A
  • Men: angle 20 - 25 degrees cephalad
  • Women: angle 30- 45 degrees cephalad
  • Enters the midline at a point 2 inches (5cm) inferior to the superior border of the pubic symphysis
20
Q

Superior and inferior rami
without foreshortening

A

AP Axial Projection (Outlet) Taylor Method

21
Q

Anatomy: Anterior Pelvic Bones
Superoinferior Axial Projection (Inlet) Bridgman Method
Central Ray

A
  • Directed 40 degrees caudad
  • Entering the midline at the
    level of ASIS
22
Q

Axial projection of the entire
pelvic ring, or inlet.

A

Superoinferior Axial Projection (Inlet) Bridgman Method

Rad Posi 1 (20 decks)

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