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25 Cards in this Set
- Front
- Back
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Anatomy of kidney
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Top of Kidney just under lowest rib. From 12 thoracic to 12th lumbar vertibrae
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Kidney functions
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Excretion of wastes
Resorption Maitenance of acid/base balance Maitenance of fluid balance |
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Kidney size
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Adult
11-12 cmwide 2-3 cm thick |
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Indications
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Evaluation of....
Renal function renal failure renal perfusion collecting system obstruction renovascular hypertension renal trauma |
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Patient prep
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Hydrate
void often |
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Collimator
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LEHR, parallel hole
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Data acuisition
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Static and dynamic
140 KeV 20% window |
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Image recording
(per image and total counts) |
Dynamic Flow: 2 sec /image for 60 sec
Statics: 30 sec-1min/image for 20-30 min |
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Matrix
# of images |
128 X 128
30 images (Flow) 30-60 images (Static) |
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Opt. maneuver
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Ace inhibitor or
Lasix |
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Rph
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99mTc MAG-3
99mTc DTPA |
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Dose
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MAG 3- 5-10 mCi
DTPA- 5-15 mCi |
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ROA
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I.V. Bolus
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Biodistribution/MOL
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Glomerular filtration
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Views
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Posterior or Anterior for Renal transplant
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Patient position
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Supine
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Normal
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Uptake of tracer @ 3-5 min
Activity<50% by 20 min Renal uptake @ 2-3 min Cortical retention @ 15 min T1/2 norm 8-12 min |
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Abnormal
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40% or less activity @ renal uptake in either kids
Diff. of 20% btwn each kid or more poor renal funct. retention |
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Indications for Renal Transplant
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Eval of arterial Flow and function
To help diagnose rejection and acute tubular necrosis To detect urinary leak, infarct or outflow of obstruction |
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Foreshortening
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when imaging kidney looks smaller long axis not parallel to surface of crystal
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More accurate technique for kidney size
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DMSA
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Horseshoe kidney
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Congenital defect bottom of the 2 kids are joined
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Polycystic Kidney disease
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Distorts anatomy of kid, large cysts on renals and liver.
Cysts grow and cause renal failure |
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Ptotic
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A mobile kidney in an abnormal position
Have patient lay supine |
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urine is produced in the Kidneys & is excreted into the _____ ______then to bladder through ureters.
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Renal pelvis
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