B5-079 Renal Imaging

Question 1

• cheap and quick
• poor soft tissue detail and radiation

Answer 1

conventional radiographs

Question 2

• high spatial resolution, relatively short exam
• high radiation dose, risks of contrast

Answer 2

CT scans

Question 3

• provides functional data
• poor resolution, radiation

Answer 3

nuclear scintigraphy

Question 4

• relatively cheap and quick, no radiation
• can’t visualize the ureters, operator dependent

Answer 4

US

Question 5

• high spatial resolution, no radiation
• high cost, long procedure, prone to artifact

last choice

Answer 5

MRI

Question 6

non-contrast CT is very good at looking for

Answer 6

renal stones

Question 7

the corticomedullary phase and nephrographic phase are good for evaluating

CT

Answer 7

solid or cystic masses

renal carcinoma vs. simple cyst

Question 8

the pyelographic phase is good for evaluating

CT

Answer 8

renal pelvis and ureter for mass lesions

urothelial carcinoma

Question 9

the further a structure is from the US transducer, the […] it takes for the sound beam to travel

Answer 9

longer

Question 10

most common renal scintigraphic study is

Answer 10

MAG-3

Question 11

good for evaluating renal function in CKD

Answer 11

nuclear scintigraphy

Question 12

appropriate intial imaging for microhematuria

Answer 12

CTU with and without contrast

Question 13

Answer 13

kidney stones

Question 14

Answer 14

RCC

Question 15

most common subtype of RCC?

Answer 15

clear cell

Question 16

large irregularly enhancing mass arising from superior pole of the kidney

Answer 16

clear cell RCC

Question 17

risk factors for RCC

Answer 17

smoking, obesity

Question 18

arises from PCT

Answer 18

RCC

Question 19

classic RCC triad

Answer 19

• flank pain
• hematuria
• flank mass

Question 20

only [..]% of patients present with the RCC triad

Answer 20

10

Question 21

a majority of RCC are found

Answer 21

incidentally

Question 22

where does RCC invade

2

Answer 22

ipsilateral renal vein and adrenal gland

Question 23

non contrast CT is very sensitive for

Answer 23

calculi

Question 24

best initial imaging modality for the evaluation of hematuria

Answer 24

CT

Question 25

sensitive for mass lesions in renal parenchyma

Answer 25

contrast CT

Question 26

does a patient with pyelonephritis need imaging?

Answer 26

not usually

Question 27

who should receive imaging for suspected pyelonephritis?

Answer 27

diabetics
immunocompromised

Question 28

best imaging modality for renal abscesses

Answer 28

CT

Question 29

best imaging modality for decreased perfusion in affected segments of kidney in pyelo

Answer 29

CT

Question 30

• wedge shaped or round areas of poor enhancement in parenchyma
• “striated nephrogram”

Answer 30

pyelonephritis

Question 31

wedge shaped diminshed perfusion

Answer 31

pyelonephritis

Question 32

Answer 32

pyelonephritis

Question 33

mixed solid/cystic enhancing lesion

Answer 33

RCC

Question 34

RCC has a heterogenous apperance due to

Answer 34

necrosis and hemorrhage

Question 35

[…] adds little value to the management of patients with pyelonephritis who improve within 72 hrs

Answer 35

imaging

Question 36

decreased perfusion of renal pyramids

Answer 36

pyelonephritis

Question 37

[…] images allow for the detection of renal calcifications

Answer 37

pre-contrast images

Question 38

[…] images help to detect and characterize solid vs cystic cortical masses

Answer 38

post-contrast

Question 39

[…] helps to evaluate the renal pelvis and ureter for mass lesions

Answer 39

delayed imaging