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University Medical Center Utrecht pulmonary embolism

Philips CT Clinical Science Philips Healthcare USA

Clinical AreaThorax
ExamCardPulmonary Embolism
InstitutionUniversity Medical Center Utrecht
Publication DateSep 1, 2004
ScannerBrilliance 40 Channel Version: Brilliance Version 1.2
Pulmonary Embolism
Scan 1Injection Protocol
Scan 2Surview
Scan 3Bolus Tracking Locator Image
Scan 4Bolus Tracking Scan
Scan 5Contrast Scan
Scan 6Post Processing Visualization

Injection Protocol
Power InjectorYes with bolus tracking
RouteRAC or LAC
Size of Angiocath19-20 G
Amount of Contrast120 ml
Concentration of Contrast300 mg/ml
Contrast Injection Rate40-60 kg3 ml/sec70 ml total5 sec delay61-80 kg4 ml/sec90 ml total5 second delay81-110 kg5 ml/sec120 ml total5 second delay
Saline Injection RateSame rate as injection
Delay(s) to ScanScan triggered off of bolus tracking threshold

Landmark - Feet FirstSuperior sternal notch
Length of Surview400 mm

Bolus Tracking Locator Image
Landmark PositionBelow carina
Scan LocationAbdominal aorta

Bolus Tracking Scan
Threshold Preset150 HU
TipsDo not use a one pixel ROI to determine the threshold. Remember to watch for voice instructions; this adds to the delay time of the scan.

Contrast Scan
Scan ModeHelical
Collimation40 x 0.625
Thickness3 mm
Increment2 mm
Rotation Time0.42 seconds
kVSee chart below
mAsSee chart below
FilterC - Sharp
Scan DirectionBottom Up
CoverageWhole Chest
Additonal ReconstructionsAxialThickness: 0.9 mmIncrement: 0.7Sent to workstation
Images to PACSAxials: 3 x 2's
TipsGive the patient breathing instructions before the scan

Post Processing Visualization
ApplicationWorkspace - CT Viewer
RenderingMIP or MPR
Thickness0.9 mm

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Jul 25, 2005

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Brilliance 40-channel
Body, bolus tracking, Brilliance Version 1.2, lung, MIP, MPR, PE, pulmonary arteries, Thorax

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