Native Renal

Question 1

RP

Dose

Answer 1

Tc99m MAG3: 3-8 mCi
Boil for 10 minutes
Stable for 6 hours

Question 2

Indications

Answer 2

Evaluate renal function
Evaluate acute renal failure
Evaluate Flow, function and obstructio

Question 3

Contraindications

Answer 3

Iodine contrast study on the same day
Patient still on ACE inhibitors
Patient still on angiotensin receptor blockers

Question 4

Positioning

Answer 4

Patient supine with camera POS

Position using anatomical markers: Elbows, half way between pubic symphysis and curve of the ribs

Question 5

Target Organ
Critical Organ
Method of Localization
Route of Excretion

Answer 5

Target Organ - Kidney
Critical Organ – Kidney/ bladder
Method of Localization: Compartmentalization
Route of Excretion – Urinary tract

Question 6

Procedure

Answer 6

Phase 1: flow - 1-2 sec/ frame for 1 minute
Phase 2: function - 20-40 sec/frame for 20-30 minutes
Post Void Statics

Question 7

Lasix

Answer 7

0. 5 mg/kg with max dose of 20-40 mg

1. 0 mg/kg for Peds

Question 8

Treatment

Answer 8

Stent

Meds

Question 9

Normal

Answer 9

Visualize both kidneys at the same time
Activity in each kidney should be 50%
Peak concentration is 2-4 min post inj
Clearance t½ is 8-12 minutes
Normal LASIX – t½  20 minutes

Question 10

Patient Prep

Answer 10

DC ACE inhibitors 3-7 days
Patient must be well hydrated
Peds must be cathed and may require saline drip)
Patient must drink at least 2 glasses of water prior to exam
NPO 4 hours
Check creatinine and BUN levels

Question 11

Computer Set Up

Answer 11

LEHR
Renogram Analysis
Flow: 64x64
Function: 128x128

Question 12

Abnormal

Question 13

Treatment

Answer 13

Stent

Meds

Question 14

Indications

Answer 14

Evaluate renal function
Evaluate acute renal failure
Evaluate Flow, function and obstructio

Question 15

Positioning

Answer 15

Patient supine with camera POS

Position using anatomical markers: Elbows, half way between pubic symphysis and curve of the ribs

Question 16

Target Organ
Critical Organ
Method of Localization
Route of Excretion

Answer 16

Target Organ - Kidney
Critical Organ – Kidney/ bladder
Method of Localization: Compartmentalization
Route of Excretion – Urinary tract

Question 17

Procedure

Answer 17

Phase 1: flow - 1-2 sec/ frame for 1 minute
Phase 2: function - 20-40 sec/frame for 20-30 minutes
Post Void Statics

Question 18

Lasix

Answer 18

0. 5 mg/kg with max dose of 20-40 mg

1. 0 mg/kg for Peds

Question 19

Lasix procedure

Answer 19

1st Protocol
Perform regular renal study
Void and check for renal pelvis activity
If persistent activity in renal pelvis do a Lasix study
Administer Lasix and image 60 sec/frame for 20-30 minutes longer
2nd Protocol
Renal study with Lasix
Lasix given 10-15 minutes after injection of MAG3
Continue to image for 20 min post Lasix
Peak Lasix effect time is 15 minutes post administration

Question 20

Normal

Answer 20

Visualize both kidneys at the same time
Activity in each kidney should be 50%
Peak concentration is 2-4 min post inj
Clearance t½ is 8-12 minutes
Normal LASIX – t½  20 minutes

Question 21

Abnormal

Question 22

Treatment

Answer 22

Stent

Meds

Question 23

RP

Dose

Answer 23

Tc99m MAG3: 3-8 mCi
Boil for 10 minutes
Stable for 6 hours

Question 24

Contraindications

Answer 24

Iodine contrast study on the same day
Patient still on ACE inhibitors
Patient still on angiotensin receptor blockers

Question 25

Patient Prep

Answer 25

DC ACE inhibitors 3-7 days
Patient must be well hydrated
Peds must be cathed and may require saline drip)
Drink at least 2 glasses of water prior to exam
NPO 4 hours
Check creatinine and BUN levels

Question 26

Computer Set Up

Answer 26

LEHR
Renogram Analysis
Flow: 64x64
Function: 128x128