Genitourinary (CTBC-18)

Question 1

CT Renal Stone (KUB): FOV

Answer 1

Kidneys through bladder

Question 2

CT Renal Stone (KUB): Indications (4)

Answer 2

Renal Stone
Flank Pn
Hematuria
Dysuria

Question 3

CT Renal Stone (KUB): Scan Type

Answer 3

Helical

Question 4

CT Renal Stone (KUB): Slice Parameters

Answer 4

3.75mm w matching interval

Question 5

CT Renal Stone (KUB): Gantry Tilt

Answer 5

None

Question 6

CT Renal Stone (KUB): Contrast

Answer 6

None

Question 7

CT Renal Stone (KUB): Algorithm

Answer 7

Standard 400/40

Question 8

CT Renal Stone (KUB): PKD

Answer 8

Polycystic Kidney Ds
Innumerable cystic lesions in the kidneys (and liver)
Eventually leads to kidney failure

Question 9

CT Kidney: Indications (2)

Answer 9

Renal Mass
Renal Abnormality

Question 10

CT Kidney: Scan Type

Answer 10

Helical

Question 11

CT Kidney: Slice Parameters

Answer 11

3.75 mm w matching interval

Question 12

CT Kidney: Gantry Tilt

Answer 12

None

Question 13

CT Kidney: Oral Contrast

Answer 13

600 mL 40-60 min prior

Question 14

CT Kidney: (IV) Contrast
Volume
Rate
Timing

Answer 14

100mL
3mL/s
1) NonCon
2) Corticomedullary: 30s delay
3) Nephrographic: 90s delay
4) Excretory: 4min

Question 15

CT Kidney: Corticomedullary Phase

Answer 15

30s delay

Question 16

CT Kidney: Nephrographic Phase

Answer 16

90s delay

Question 17

CT Kidney: Algorithm

Answer 17

Standard 400/40

Question 18

CT Kidney: Non-Con Benefit

Answer 18

Establish baseline

Question 19

CT Kidney: Arterial Phase
Timing
Name
Purpose (2)

Answer 19

(30 s delay)
“Corticomedullary”
Eval renal arteries
Eval Renal Cortex (initially receives arterial blood supply)

Question 20

CT Kidney: Venous Phase
Timing
Name
Purpose (3)

Answer 20

(90 s delay)
“Nephrographic”
Eval nephrons
Eval for infarct
Eval for tumor characterization

Question 21

CT Kidney: Nephrons
Location
Purpose

Answer 21

Middle portion of Kidneys
Perform the work of filtering (e.g., contrast) from blood

Question 22

CT Kidney: Benefit (& timing) of Excretory Phase

Answer 22

(4+ min delay)
Eval Renal Pelvis
Eval Collecting system of Kidneys

Question 23

CT Adrenals: Purpose

Answer 23

Differentiate benign from cancerous adrenal tumors

Question 24

CT Adrenal: Clinical presentation

Answer 24

Abnormal hormone levels
E.g., Estrogens (female), Androgens (male)

Question 25

CT Adrenal: Indication

Answer 25

Adrenal Tumor

Question 26

CT Adrenal: Scan Type

Answer 26

Helical

Question 27

CT Adrenal: Slice Parameters

Answer 27

3.75 mm w matching interval

Question 28

CT Adrenal: Gantry Tilt

Answer 28

None

Question 29

CT Adrenal: Contrast Volume Rate Timing

Answer 29

100mL 3mL/s 1) Non-Con 2) 60 s Portal Venous 3) 15min Delayed

Question 30

CT Adrenal: Algorithm

Answer 30

Standard 400/40

Question 31

CT Adrenal: HU measurements

Answer 31

Completed during each phase to determine type of adrenal tumor

Question 32

CT Adrenal: Most common adrenal lesion identified in CT

Answer 32

Adrenal adenoma

Question 33

CT Urogram: Purpose

Answer 33

Examine functionality and anatomy of urinary system

Question 34

CT Urogram: Scan Covers _______ during _______

Answer 34

Entire Collecting System (KUB) during Excretory Phase

Question 35

CT Urogram: Indications (5)

Answer 35

Pre-planning for ureteral STENT placement Renal Stone Diagnose functional/anatomical causes of recurrent renal stones Pain Hematuria

Question 36

CT Urogram: Scan Type

Answer 36

Helical

Question 37

CT Urogram: Slice Parameters

Answer 37

3.75mm w matching interval

Question 38

CT Urogram: Gantry Tilt

Answer 38

None

Question 39

CT Urogram: Oral Contrast

Answer 39

1000 mL 30 min prior

Question 40

CT Urogram: (IV) Contrast Volume Rate Timing

Answer 40

100mL 3mL/s 1) Non-Con 2) excretory: 4+ min delay

Question 41

CT Urogram: Algorithm

Answer 41

Standard 400/40

Question 42

CT Urogram: While the Excretory phase is Essential, some scans may include_______ & _______ of _______

Answer 42

arterial imaging venous imaging (through the kidneys)

Question 43

CT Urogram: Variability in timing of excretory phase

Answer 43

4-10 minutes

Question 44

CT Urogram: Hydronephrosis

Answer 44

Swelling of renal pelvis

Question 45

CT Urogram: Bifid Ureter

Answer 45

double ureter