CT — Venografie cerebrală (MCB)
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MCB Radiology — 7 CTV Head
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Documentul original MCB — Venografie cerebrală
Protocol · 4 pagini · consultat la 2026-09-27.
Descarcă PDF-ul integral · Sursa MCB · Catalogul MCB pentru această modalitate
Instrucțiunile, valorile și ilustrațiile din documentul original sunt păstrate în engleză. Titlul și navigarea sunt în română.
Pagina 1
Pagina 2
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Pagina 4
Textul documentului original
Pagina 1 — text în engleză
Updated 03/03/25 CT Venogram Head Reviewed 05/14/25 Indications - venous sinus thrombosis, headache, nausea, vomiting, vision changes, focal neurologic deficits and seizures. Use CT Angiography Head w/ + w/o Contrast charge. GENERAL SCAN NOTES Remove any metal from the imaging field of view. Position patient's head so that the line connecting the lateral canthus of the eye and the EAC is perpendicular to the CT tabletop. Topogram - C2 vertebrae through top of head. Craniocaudal overage - C2 vertebrae through top of head. Adjust FOV (field of view) on topogram to smallest without cropping anatomy. IV Contrast: Administer weight-based Omnipaque-350 - 1 mL/kg up to 100 mL. Inject at 4 mL/sec followed by 40 mL saline flush, 20-gauge or larger in forearm or more proximal. For GE scanners, it is essential for the 1st recon thickness on the scanner to match the 1st recon thickness in this protocol book for the prescribed Noise Index to be valid. The 1st recon should generally be the thickest recon in the protocol. Non contrast technical parameters and reconstructions are the same as routine head. Venogram technical parameters and reconstructions are the same as CTA head.
Pagina 2 — text în engleză
CT Venogram Head SIEMENS PARAMETERS & RECONS For the Non Contrast phase: Scan
Care
Scan
Pitch Acq Coll Rot Mode kV mAs Care
Dose kV & Lvl Time Time Sensation 16 spiral 120 320 on NA 0.55 16 1.5 1.0 9.1 Go Up 32 spiral 130 230 off 0.55 32 0.7 1.0 9.7 off Sensation 64 spiral 120 380 on NA 0.85 64 0.6 1.0 7.4 Definition 64 spiral 120 350 on 0.55 64 0.6 1.0 11.4 on Go Top 64 spiral 120 265 off off 0.55 64 0.5 1.0 6.8 Drive 128 spiral 120 332 on 0.55 128 0.6 1.0 5.7 on Force 192 spiral 120 332 on on 0.55 192 0.6 1.0 3.8 For the Venogram phase: Scan
Care
Scan
Pitch Acq Coll Rot Mode kV mAs Care
Dose kV & Lvl Time Time Sensation 16 spiral 120 140 on NA 1.15 16 0.75 0.5 4.3 Go Up 32 spiral 80 84 on 1.50 32 0.7 0.8 2.9 on 105 Sensation 64 spiral 120 160 on NA 1.20 64 0.6 0.5 2.6 Definition 64 spiral 100 175 on 1.40 64 0.6 0.5 2.2 on Go Top 64 spiral 90 83 on on 105 1.50 64 0.6 0.33 0.7 0.70 64 0.6 0.33 2.9 Sn140 89 Drive 128 spiral 80 178 on on 0.90 64 0.6 0.25 1.7 140 69 Force 192 spiral 80 345 on on NON CONTRAST PHASE Recon
Name of Series Thick Interval Kernel Window IR
Lvl Direction AX SOFT 4.0 4.0 Hr40 / H31s cerebrum 3 feet/head TRUE AX SOFT 4.0 4.0 Hr40 / H31s cerebrum 3 feet/head COR SOFT 3.0 3.0 Hr40 / H31s cerebrum 3 front/back SAG SOFT 3.0 3.0 Hr40 / H31s cerebrum 3 left/right AX BONE 4.0 4.0 Hr64 / H70s bone 3 feet/head VENOGRAM PHASE (30 secs) Recon
Name of Series Thick Interval Kernel Window IR
Lvl Direction AX VEIN 2.0 2.0 Bv36 / H20f CT angio 3 feet/head AX VEIN THINS 1.0 1.0 Bv36 / H20f CT angio 3 feet/head COR VEIN MIPS 2.0 2.0 Bv36 / H20f CT angio 3 front/back SAG VEIN MIPS 2.0 2.0 Bv36 / H20f CT angio 3 left/right 3D VRT (spin) 0.75 0.5 Bv36 / B31f CT angio 3D VRT (tumble) 0.75 0.5 Bv36 / B31f CT angio
Care
Scan
Pitch Acq Coll Rot Mode kV mAs Care
Dose kV & Lvl Time Time Sensation 16 spiral 120 320 on NA 0.55 16 1.5 1.0 9.1 Go Up 32 spiral 130 230 off 0.55 32 0.7 1.0 9.7 off Sensation 64 spiral 120 380 on NA 0.85 64 0.6 1.0 7.4 Definition 64 spiral 120 350 on 0.55 64 0.6 1.0 11.4 on Go Top 64 spiral 120 265 off off 0.55 64 0.5 1.0 6.8 Drive 128 spiral 120 332 on 0.55 128 0.6 1.0 5.7 on Force 192 spiral 120 332 on on 0.55 192 0.6 1.0 3.8 For the Venogram phase: Scan
Care
Scan
Pitch Acq Coll Rot Mode kV mAs Care
Dose kV & Lvl Time Time Sensation 16 spiral 120 140 on NA 1.15 16 0.75 0.5 4.3 Go Up 32 spiral 80 84 on 1.50 32 0.7 0.8 2.9 on 105 Sensation 64 spiral 120 160 on NA 1.20 64 0.6 0.5 2.6 Definition 64 spiral 100 175 on 1.40 64 0.6 0.5 2.2 on Go Top 64 spiral 90 83 on on 105 1.50 64 0.6 0.33 0.7 0.70 64 0.6 0.33 2.9 Sn140 89 Drive 128 spiral 80 178 on on 0.90 64 0.6 0.25 1.7 140 69 Force 192 spiral 80 345 on on NON CONTRAST PHASE Recon
Name of Series Thick Interval Kernel Window IR
Lvl Direction AX SOFT 4.0 4.0 Hr40 / H31s cerebrum 3 feet/head TRUE AX SOFT 4.0 4.0 Hr40 / H31s cerebrum 3 feet/head COR SOFT 3.0 3.0 Hr40 / H31s cerebrum 3 front/back SAG SOFT 3.0 3.0 Hr40 / H31s cerebrum 3 left/right AX BONE 4.0 4.0 Hr64 / H70s bone 3 feet/head VENOGRAM PHASE (30 secs) Recon
Name of Series Thick Interval Kernel Window IR
Lvl Direction AX VEIN 2.0 2.0 Bv36 / H20f CT angio 3 feet/head AX VEIN THINS 1.0 1.0 Bv36 / H20f CT angio 3 feet/head COR VEIN MIPS 2.0 2.0 Bv36 / H20f CT angio 3 front/back SAG VEIN MIPS 2.0 2.0 Bv36 / H20f CT angio 3 left/right 3D VRT (spin) 0.75 0.5 Bv36 / B31f CT angio 3D VRT (tumble) 0.75 0.5 Bv36 / B31f CT angio
Pagina 3 — text în engleză
CT Venogram Head GE PARAMETERS & RECONS For the Non Contrast phase: Scan
Smart
Slice
Beam
Dose
Pitch Speed Rot
Type SFOV kV mA
Range Noise
Index mA Thick Coll Time Red ASIR Scan
Time on 5.0 10 0.562 5.62 0.8 LS 16 helical head 120 50-250 3.54 NA NA 17.1 Opt 540 helical head 120 50-250 3.54 on 5.0 10 0.562 5.62 0.8 NA NA 17.1 20 0.531 10.62 0.7 30 30 LS VCT 64 helical head 120 50-210 2.47 5.0 on 7.9 Disc VCT 64 helical head 120 50-210 2.47 on 5.0 20 0.531 10.62 0.7 NA NA 7.9 For the Venogram phase: Scan
Smart
Slice
Beam
Dose
Type SFOV kV mA
Range Noise
Index mA Thick Coll Pitch Speed Rot
Time Red ASIR Scan
Time LS 16 helical head 120 100-400 3.50 on 2.5 NA 6.4 10 0.938 9.37 0.5 NA 10 0.938 9.37 0.5 NA NA Opt 540 helical on 2.5 head 120 100-400 3.50 6.4 LS VCT 64 helical head 120 100-450 5.00 on 2.5 20 0.969 19.37 0.5 20 20 3.1 on 2.5 20 0.969 19.37 0.5 Disc VCT 64 helical head 120 100-450 5.00 NA NA 3.1 NON CONTRAST PHASE Recon
Window
Recon
Name of Series Thickness Interval Algorithm Width/Level Direction AX SOFT 5.0 5.0 std full 80/40 feet/head Must be first recon. TRUE AX SOFT 5.0 5.0 std full 80/40 feet/head COR SOFT 2.5 2.5 std full 80/40 front/back SAG SOFT 2.5 2.5 std full 80/40 left/right AX BONE 5.0 5.0 bone full 2500/480 feet/head VENOGRAM PHASE (30 secs) Window
Recon Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX VEIN 2.5 2.5 std full 400/40 feet/head Must be first recon. AX VEIN THINS 1.25 1.25 std full 400/40 feet/head COR VEIN MIPS 2.5 2.5 std full 400/40 front/back SAG VEIN MIPS 2.5 2.5 std full 400/40 left/right 3D VRT (spin) 0.625 0.625 std full 400/40 3D VRT (tumble) 0.625 0.625 std full 400/40
Smart
Slice
Beam
Dose
Pitch Speed Rot
Type SFOV kV mA
Range Noise
Index mA Thick Coll Time Red ASIR Scan
Time on 5.0 10 0.562 5.62 0.8 LS 16 helical head 120 50-250 3.54 NA NA 17.1 Opt 540 helical head 120 50-250 3.54 on 5.0 10 0.562 5.62 0.8 NA NA 17.1 20 0.531 10.62 0.7 30 30 LS VCT 64 helical head 120 50-210 2.47 5.0 on 7.9 Disc VCT 64 helical head 120 50-210 2.47 on 5.0 20 0.531 10.62 0.7 NA NA 7.9 For the Venogram phase: Scan
Smart
Slice
Beam
Dose
Type SFOV kV mA
Range Noise
Index mA Thick Coll Pitch Speed Rot
Time Red ASIR Scan
Time LS 16 helical head 120 100-400 3.50 on 2.5 NA 6.4 10 0.938 9.37 0.5 NA 10 0.938 9.37 0.5 NA NA Opt 540 helical on 2.5 head 120 100-400 3.50 6.4 LS VCT 64 helical head 120 100-450 5.00 on 2.5 20 0.969 19.37 0.5 20 20 3.1 on 2.5 20 0.969 19.37 0.5 Disc VCT 64 helical head 120 100-450 5.00 NA NA 3.1 NON CONTRAST PHASE Recon
Window
Recon
Name of Series Thickness Interval Algorithm Width/Level Direction AX SOFT 5.0 5.0 std full 80/40 feet/head Must be first recon. TRUE AX SOFT 5.0 5.0 std full 80/40 feet/head COR SOFT 2.5 2.5 std full 80/40 front/back SAG SOFT 2.5 2.5 std full 80/40 left/right AX BONE 5.0 5.0 bone full 2500/480 feet/head VENOGRAM PHASE (30 secs) Window
Recon Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX VEIN 2.5 2.5 std full 400/40 feet/head Must be first recon. AX VEIN THINS 1.25 1.25 std full 400/40 feet/head COR VEIN MIPS 2.5 2.5 std full 400/40 front/back SAG VEIN MIPS 2.5 2.5 std full 400/40 left/right 3D VRT (spin) 0.625 0.625 std full 400/40 3D VRT (tumble) 0.625 0.625 std full 400/40
Pagina 4 — text în engleză
CT Venogram Head PHILIPS PARAMETERS & RECONS For the Non Contrast phase: Scan
Dose
3D
Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Rot Time Time Incisive 128 helical 120 310 37 on 0.70 64 0.625 1.0 4.3 For the Venogram phase: Scan
Dose
3D
Scan
Pitch Detect Colli Rot Mode kV Avg
mAs Index Dose Time Time Incisive 128 helical 120 203 22 on 1.00 64 0.625 1.00 3.0 NON CONTRAST PHASE Name of Series Thick Interval Filter Window iDose Recon
Direction AX SOFT 4.0 4.0 UB brain 1 feet/head TRUE AX SOFT 4.0 4.0 UB brain 1 feet/head COR SOFT 3.0 3.0 UB brain 1 front/back SAG SOFT 3.0 3.0 UB brain 1 left/right feet/head AX BONE 4.0 4.0 YB bone 1 VENOGRAM PHASE (30 secs) Recon
Name of Series Thick Interval Filter Window iDose Direction AX VEIN 2.0 2.0 B CTA 2 feet/head AX VEIN THINS 1.0 1.0 B CTA 2 feet/head COR VEIN MIPS 2.0 2.0 B CTA 2 front/back SAG VEIN MIPS 2.0 2.0 B CTA 2 left/right 3D VRT (spin) 0.75 0.5 B 3D VRT (tumble) 0.75 0.5 B
Dose
3D
Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Rot Time Time Incisive 128 helical 120 310 37 on 0.70 64 0.625 1.0 4.3 For the Venogram phase: Scan
Dose
3D
Scan
Pitch Detect Colli Rot Mode kV Avg
mAs Index Dose Time Time Incisive 128 helical 120 203 22 on 1.00 64 0.625 1.00 3.0 NON CONTRAST PHASE Name of Series Thick Interval Filter Window iDose Recon
Direction AX SOFT 4.0 4.0 UB brain 1 feet/head TRUE AX SOFT 4.0 4.0 UB brain 1 feet/head COR SOFT 3.0 3.0 UB brain 1 front/back SAG SOFT 3.0 3.0 UB brain 1 left/right feet/head AX BONE 4.0 4.0 YB bone 1 VENOGRAM PHASE (30 secs) Recon
Name of Series Thick Interval Filter Window iDose Direction AX VEIN 2.0 2.0 B CTA 2 feet/head AX VEIN THINS 1.0 1.0 B CTA 2 feet/head COR VEIN MIPS 2.0 2.0 B CTA 2 front/back SAG VEIN MIPS 2.0 2.0 B CTA 2 left/right 3D VRT (spin) 0.75 0.5 B 3D VRT (tumble) 0.75 0.5 B