RENAL ARTERY CTA (last updated 6/20/2016, last reviewed 02/10/2022)
INDICATION: r/o renal artery stenosis. Renovascular hypertension. Fibromuscular Dysplasia. Vasculitis, vasculopathy.
SERIES
- 1mm Axial CTA
- 3mm Coronal CTA
- 3mm Sagittal CTA
- 3D volume rendered & MIPS
| | |
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POSITIONING/MODE
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supine/helical |
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kV/mA/rot time
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120kV/auto mA/0.5 sec |
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DETECTOR COLLIMATION
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16 x 1.5mm (S16) 24 x 1.2mm (D64) |
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SLICE THICKNESS
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1mm |
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PITCH
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1 to 1.5 |
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TABLE FEED
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4.8 cm/sec (S16) 5.8 cm/sec (D64) |
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KERNAL
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std |
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SFOV
|
large |
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COVERAGE
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diphragm -> ~2 cm above acetabular roof |
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ACQUISITION
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craniocaudal |
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ORAL CONTRAST
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--- |
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IV CONTRAST
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100 mL Isovue 370, then 40 mL saline |
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INJECTION RATE
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4 mL/sec |
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SCAN DELAY
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Care bolus Descending Aorta at diaphragm (100 HU) ~30 sec |
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RESPIRATION
|
Inspiration |
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POSTPROCESSING
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3mm Coronal and Sagittal. 3D volume rendered & MIPS |