Lowers lab Flashcards
In AP foot Provide the following:
Cassette size and orientation
part position
CR
10x12 LW NB
Foot is directly on IR, (plantar surface)
CR is 10 degree towards heel, directed at base of 3rd metatarsal
In OBL foot provide the following:
Cassette size and orientation
part position
CR
10x12 LW NB
foot is rotated 30 degree medially
no angle, directed at base of 3rd metatarsal
In LAT foot provide: Cassette size and orientation part position Affected knee position CR
10x12 LW NB
In a true lateral position
Affected knee down and flexed 45 degree
CR is directed at medial cuneiform
In AP ankle provide: cassette size and or. part position CR Collimation
10x12 LW NB
foot and ankle in true AP position
directed midway btwn malleoli
incld prox half of metatarsals and distal tib-fib
In AP mortise ankle provide:
Cassette size
Part position
CR
10x12 LW NB
entire affected leg and foot, internally rotated 15-20 degree (hint, have pt lie on the affected side for complete rotation)
CR is directed mid btwn malleoli
In LAT ankle provide: Cassette size degree of affected knee Part position CR
10x12 LW NB
45 degree
dorsiflexed foot, in true lateral position
CR directed at medial malleolus
In AP leg provide cassette size and OR part position part to IR CR collimation
14x17 Diag, NB
True lateral position, no angle, foot is dorsiflexed
IR is diag oriented, include ankle and knee joint 1-2 inches
CR mid point of tibia
include maximum ankle and knee joint
in LAT leg, provide: cassette size and OR part position Part to IR SID
14x17 diag, NB
True lat, dorsiflexed foot 90 degree
same as AP leg
44” SID
In AP knee provide:
Cassette size and OR
Prt position
CR
10x12 LW B
True AP, rotate leg internally 3-5 degree
CR is 1/2” distal to apex of patella
Tube angle mnemonic for memorization is LAST. what view does each letter represent?
L= Lat Knee, A= AP foot, S= Sun Rise, T= Tunnel
Tube angulation on LAST
L= 5, A=10, S= 15, T= 20
Knee flexion mnemonic for memorization is LAFF, what does each letter represent?
L= Lat knee, A= Ankle, F= foot, F= femur
As a rule of thumb, each joint has angulation to be accounted for, what are the angulation for Hip, Knee, and Ankle
Hip= 15, Knee= 5, Ankle = 15
In lateral knee, provide: Cassette size and orientation pt position part position Central ray position
10x12 LW Bucky
pt on the affected side, unaffected knee out of view
Knee is flexed at 20-30, in true lat, epicondyles superimposed
tube is angled 5-7 degree towards head, CR 1” distal to medial epicondyle
In sunrise patella, provide: cassette size and orientation pt position part position IR placement CR (angulation, position of CR) collimation
8x10 LW NB
pt is seated, unaffected leg extended
affected knee is bent at 90 degree with the plantar surface of foot on the table
IR rested on the midthigh, parallel to the tube angle
Tube angulation is at 15-20 towards the femoropatella joint
collimation is tightly to affected part
for AP axial, provide: cassette size pt position part position part to IR CR
8x10 cw NB
pt is supine
knee is flexed 40-45 degree
under IR use sandbag/tools to raise the IR to decrease OID
CR is angled 20-25 degree cephalic, 1/2” distal to apex of patella
AP proximal Femur, provide: cassette size part position Part to IR CR
14x17 LW B
femur internally rotated, 15-20 degree
femoral neck to mid IR
CR= top of IR to level of ASIS, then center it
AP distal femur, provide Cassette size part position (position of epicondyles and angle of internal rotation) Prt to IR collimation
14x17 LW B
epicondyles are parallel to IR, limb internally rotated 5 degree
femur to mideline of IR, lower IR 2” below knee joint
collimate to skin border, and 1” knee joint
Lateral prox femur, provide: cassette size pt position prt position prt to IR CR what to include in collimation
14x17 LW B
pt is supine, on side of affected leg, unaffected is behind and away
knee is flexed 45 degree, femur in line with midline of CR shadow
upper IR is at lvl of ASIS
as much as the ends of collimation allow
Lat distal femur, provide: cassette size pt position prt to IR CR collimation
14x17 LW b
same as lat prox femur
knee flexed at 45, bottom of IR to 2” below knee joint
CR to midpoint of IR
sides to skin, include as much femur and min of knee joint
AP pelvis, provide: Cassette size Pt position prt position Prt to IR CR collimation
14x17 CW bucky
supine, legs extended no pelvic rotation
prt position is bilateral feet at a 15-20 degree internal rotation
Mid Sagi plane, centerline of table
CR = midway btwn asis and pubis symphysis ( two inches below ASIS)
sides to skin, full colli ends
AP Hip, provide: cassette size pt position prt position prt to IR CR Collimation
10x12 LW B
supine
affected leg internally rotated 15-20 degree
in combination, find ASIS, go 1” medial and then 3.5” distal then you’ll have center of IR
on all 4 sides
Lat hip (frog leg) provide: cassette size pt position prt position prt to IR CR collimation
10x12 CW B
supine with flexed knee and hip to side
center affected femoral neck to midline IR ( do this by finding the ASIS and then go medially one inch)
for CR 1” medial to ASIS (as stated) is and then 3.5” distal to ASIS.
