Protocol for Abd/Pelv/Extrem

Question 1

Wrist scan type is

Answer 1

helical

Question 2

Wrist typical algorithm

Answer 2

Bone +

Question 3

window for the wrist

Answer 3

2000ww/50wl

Question 4

Indications for wrist CT

Answer 4

complex, scaphoid, carpal #s that are unclear on general radiography

Question 5

Shoulder scan type is

Answer 5

helical

Question 6

Shoulder algorithm is

Answer 6

Bone

Question 7

window for the shoulder

Answer 7

2000ww/500wl

Question 8

Indications for shoulder CT

Answer 8

Proximal humerus, scapula fractures. Pre-operation planning, shoulder implants, tumors, etc.

Question 9

Knee scan type is

Answer 9

helical

Question 10

Knee algorithm is

Answer 10

bone +

Question 11

typical window for knee

Answer 11

2000ww/500wl

Question 12

Indications for knee CT

Answer 12

Assess tibial plateau fracture.
Degree of alignment of # fragments especially on articular surface
assess bone integrity around a prosthesis

Question 13

Enhanced abd/pelv scan type

Answer 13

helical

Question 14

Enhanced abd/pelv algorithm

Answer 14

Standard

Question 15

Contrast used in Enhanced abd/pelv + scan delay

Answer 15

IV: 150mL @ 3.0mL/sec with 50mL saline flush
Oral: 675mL before exam + 225mL right before scan starts
scan delay = 65 sec

Question 16

Typical window for Enhanced abd/pelv

Answer 16

Soft tissue: 400ww/50wl
Liver: 150ww/70wl
Lung: 1500ww/-700wl

Question 17

Indications for Enhanced abd/pelv

Answer 17

suspected abdominal mass, tumor staging and abscess

Question 18

unenhanced abd/pelv will be the same as enhanced, the only difference is…

Answer 18

… There is no contrast used

Question 19

Liver scan type

Answer 19

helical

Question 20

Liver indications

Answer 20

suspected hypervascular hepatic tumors
(carcinoma/melanoma/sarcomas)

Question 21

Liver group A is called…

Answer 21

Arterial Scan

Question 22

Arterial scan requires patient to hold their breathe on

Answer 22

inspiration

Question 23

Arterial scan contrast oral and IV + scan delay:

Answer 23

IV: 125mL @ 4.0mL/ with 50mL saline @ 4.0mL
Oral: 450mL 30 minutes before exam, 225mL 10 minutes before exam, 225mL again right before scan
Scan delay = 35sec

Question 24

Liver group B is called…

Answer 24

Venous scan

Question 25

venous scan requires patient to hold their breathe on

Answer 25

inspiration

Question 26

venous scan doesnt require additional contrast because.. ...Scan delay will be

Answer 26

...This isn't a split dose procedure, the contrast from group A will be in the patient still. scan delay = 65 seconds

Question 27

Arterial scan window (soft tissue + liver)

Answer 27

ST: 350ww/50wl L: 150ww/70wl

Question 28

Venous scan window (soft tissue)

Answer 28

ST: 350ww/50wl

Question 29

venous scan algorithm

Answer 29

standard

Question 30

Enhanced pelvis scan type

Answer 30

helical

Question 31

Enhanced pelvis breathing instructions:

Answer 31

hold on inspiration

Question 32

Enhanced pelvis contrast + scan delay:

Answer 32

IV: 135mL @ 3.0 mL/s with 50mL saline flush no oral contrast used scan delay = 3 minutes

Question 33

Enhanced pelvis algorithm:

Answer 33

standard

Question 34

Typical window for Enhanced pelvis (Soft tissue + liver)

Answer 34

Soft tissue: 400ww/50wl Liver: 150ww/70wl

Question 35

Indications for pelvis CT

Answer 35

similar to indications for abd/pelv. To detect suspected hypervascular hepatic tumors