Pelvis/Hip projections

Question 1

For AP Pelvis what is the cassette size?

Answer 1

14x17

Question 2

For AP Pelvis what is the IR position?

Answer 2

2” below ASIS and 2” above public symphysis

Question 3

For AP Pelvis what is the CR position?

Answer 3

perpendicular to midpoint of IR

Question 4

For AP Pelvis what is the collimation?

Answer 4

14x17

Question 5

For All pelvis/hip projections breathing instructions are?

Answer 5

suspend

Question 6

For AP Pelvis what is the criteria to be met?

Answer 6

entire pelvis
prox femora 
both ilia and greater trochanters
symmetric ilia, obturator foramen
ischial spine seen
sacrum/coccxy aligned
greater trochanter in profile

Question 7

For all Pelvis/Hip projections SID is?

Answer 7

40”

Question 8

For AP Oblique Modified cleaves “Froglegs” what is the cassette size?

Answer 8

14x17

Question 9

For AP Oblique Modified cleaves “Froglegs” what is the IR position?

Answer 9

1” above pubic symphysis

Question 10

For AP Oblique Modified cleaves “Froglegs” what is the CR position?

Answer 10

@ level 1” above pubic symphysis

Question 11

For AP Oblique Modified cleaves “Froglegs” what is the criteria to be met?

Answer 11

no rotation
acetabulum, femoral neck/head in profile
less trochanter on medial side
femoral neck w/o superimposition

Question 12

For all Hip projections cassette size is?

Answer 12

10x12

Question 13

For all hip projections collimation is?

Answer 13

10x12

Question 14

For AP Hip projection the IR is positioned?

Answer 14

center to central ray

Question 15

For AP Hip projection the CR is positioned?

Answer 15

2.5” distal to line drawn between ASIS and pubic symphysis

Patient medially rotate feet 15-20 degrees

Question 16

For AP Hip projection the criteria to be met?

Answer 16

proximal 1/3 of femur 
hip joint seen
femoral head seen through acetabulum
femoral neck not foreshortened
greater trochanter in profile

Question 17

For Lateral Hip (Lauenstein/Hickey) what is the IR Position?

Answer 17

center to central ray

Question 18

For Lateral Hip (Lauenstein/Hickey) what is the CR Position?

Answer 18

perpendicular to hip joint between ASIS and pubic symphysis

Hickey - 20-25 degree cephalic angle

Question 19

For Lateral Hip (Lauenstein/Hickey) what is the criteria to be met?

Answer 19

hip joint centered
include hip joint, acetabulum and femoral head
femoral neck overlap by greater trochanter-lauenstein
femoral neck free of superimposition-hickey

Question 20

For Axiolateral Dan Miller “Crosstable” What is the IR positon?

Answer 20

vertical in crease of iliac crest

Question 21

For Axiolateral Dan Miller “Crosstable” What is the CR positon?

Answer 21

2.5” below point of localization lines: femoral neck

Patient medially rotate feet 15-20 degrees

Question 22

For Axiolateral Dan Miller “Crosstable” What is the criteria to be met?

Answer 22

hip joint with acetabulum
femoral neck w/o overlap
small amt of lesser/greater trochanter
ischial tuberosity below femoral head/neck

Question 23

For AP oblique Judet (Acetabulum) what is the IR position?

Answer 23

center to hip

Question 24

For AP oblique Judet (Acetabulum) what is the CR position?

Answer 24

perpendicular to IR entering pubic symphysis
Patient will have 45 degree angle
affected hip up=internal posterior obl
affected hip down=external posterior obl

Question 25

For AP oblique Judet (Acetabulum) what is the criteria met?

Answer 25

internal: fracture of iliopubic column (anterior) and posterior rim acetabulum
external: fracture of ilioischial column (Posterior) and anterior rim acetabulum Acetabulum centered