カテゴリー 全て - contraindications - technical - procedure - imaging

によって Patricia Brownell 3年前.

192

Genitourinary System Imaging

Genitourinary System Imaging

Genitourinary System Imaging

Vesicouretal Imaging

Subtopic

Morphological Renal Imaging

Renal Scintigrahy w/ Ace Inhibitor

Diuretic Renal Scan

Functional Renal Imaging

Procedure
-Patient is supine -one arm can be at patient's side and other is placed on side table for easy flow injection -bolus of rph inject via IV -IV at antecubital preferred -Sternal notch in top one third of image -Begin flow acquisition immediately after injection
Images
Post Void

-posterior static acquisition for 2 minutes

Function

-Dynamic acquisition -19 minutes of 20 s/frame

Flow Renal Perfusion

-Dynamic acquisition -30 frames x 2s/frame -1 minute total time

Technical Details
-Single or dual head gamma camera -full field of view for adults -LEAP (all purpose) collimator -128x128 flow -256x256 function -Camera position posterior -Camera anterior if previous kidney transplant
Radiopharmaceutical
99mTc-DTPA (Pentetate)

-Cleared by glomerular filtration with minimal binding to the renal parencyma -Useful for Glomerular Filtration Rates (GFR) -Useful for blood flow rates to each kindey

99mTc-MAG3 (Mertiatide)

Facts

-Excreted by tubular secretion -high first pass extraction fraction -rapid plasma clearance -Preferred over DTPA (Pentetate) -Used for Effective Renal Plasma Flow (ERPF)

Dose Amount

10-20 mCi

Patient Preparation
-patient history (abdominal surgery) -Patient should hydrate well before exam -void just before exam
Contraindications
-recent iodine contrast study -pregancy
Indications
-Evaluation of a renal transplant -Evaluation of acute renal failure -Measurement of relative renal function