CT — Urografie split-bolus (MCB)
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MCB Radiology — 18 Urography Split-Bolus
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Documentul original MCB — Urografie split-bolus
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
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Pagina 4
Textul documentului original
Pagina 1 — text în engleză
Updated 03/09/25 CT Urogram Split-Bolus Reviewed 05/14/25 Indications - hematuria, renal/ureteral stones/calculi, nephrolithiasis, hydronephrosis, hydroureter, chronic urinary tract infection, urothelial malignancy. Use this protocol on anyone under 50 years of age and on those who get frequent CTs. GENERAL SCAN NOTES Move the patient's arms over his/her head if possible. Remove any metal from the imaging field of view. Topogram - lung bases through pubic symphysis (obtained during end inspiration). Craniocaudal scan coverage - lung bases through pubic symphysis on both phases (obtained during end inspiration). Adjust FOV (field of view) on topogram to smallest without cropping anatomy. IV Contrast: Administer weight-based Omnipaque-300 - 1 mL/kg up to 150 mL (100 mL minimum). Inject at 2.5 mL/sec followed by 40 mL saline flush, 20-gauge or larger in forearm or more proximal. Oral contrast: Give patient 32 oz water 30 mins prior to imaging. Tell patient not to use the restroom prior to scan. The bladder needs to be distended for the best study. Split-Bolus Technique: Inject patient with 1/3 IV contrast dose. DO NOT SCAN PATIENT. About 3 mins after IV contrast, roll the patient three times to mix contrast within bladder. After rolling the patient, inject the remaining 2/3 IV contrast dose. 90 seconds after start of second injection SCAN PATIENT. 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.
Pagina 2 — text în engleză
CT Urogram Split-Bolus SIEMENS PARAMETERS & RECONS For the Pre Contrast and Split-Bolus phases: Scan
Care
Scan
Mode kV mAs Care
Dose kV & Lvl Pitch Acq Coll Rot Time Time Sensation 16 spiral 120 200 on NA 0.80 16 1.5 0.5 13.0 Go Up 32 spiral 130 92 on on 145 0.80 32 0.7 0.8 22.3 Sensation 64 spiral 120 200 on NA 1.20 24 1.2 0.5 7.2 0.5 21.7 Definition 64 spiral 120 180 on off 0.60 64 0.6 Go Top 64 spiral 120 112 on on 145 0.80 64 0.6 0.5 8.1 Drive 128 spiral 120 147 on on 0.60 128 0.6 0.5 10.9 Force 192 spiral 120 147 on on 0.60 192 0.6 0.5 7.2 PRE CONTRAST PHASE IR
Recon
Name of Series Thick Interval Kernel Window Lvl Direction AX PRE 3.0 3.0 Br40 / B41f mediastinum head/feet 3 COR PRE 3.0 3.0 Br40 / B41f mediastinum 3 front/back POST SPLIT-BOLUS PHASE AX SPLIT 3.0 3.0 Br40 / B41f mediastinum 3 head/feet COR SPLIT 3.0 3.0 mediastinum Br40 / B41f 3 front/back SAG SPLIT Br40 / B41f 3.0 3.0 mediastinum 3 left/right Br40 / B41f COR SPLIT MIPS 5.0 3.0 mediastinum front/back 3 SAG SPLIT MIPS 5.0 3.0 mediastinum left/right Br40 / B41f 3
Care
Scan
Mode kV mAs Care
Dose kV & Lvl Pitch Acq Coll Rot Time Time Sensation 16 spiral 120 200 on NA 0.80 16 1.5 0.5 13.0 Go Up 32 spiral 130 92 on on 145 0.80 32 0.7 0.8 22.3 Sensation 64 spiral 120 200 on NA 1.20 24 1.2 0.5 7.2 0.5 21.7 Definition 64 spiral 120 180 on off 0.60 64 0.6 Go Top 64 spiral 120 112 on on 145 0.80 64 0.6 0.5 8.1 Drive 128 spiral 120 147 on on 0.60 128 0.6 0.5 10.9 Force 192 spiral 120 147 on on 0.60 192 0.6 0.5 7.2 PRE CONTRAST PHASE IR
Recon
Name of Series Thick Interval Kernel Window Lvl Direction AX PRE 3.0 3.0 Br40 / B41f mediastinum head/feet 3 COR PRE 3.0 3.0 Br40 / B41f mediastinum 3 front/back POST SPLIT-BOLUS PHASE AX SPLIT 3.0 3.0 Br40 / B41f mediastinum 3 head/feet COR SPLIT 3.0 3.0 mediastinum Br40 / B41f 3 front/back SAG SPLIT Br40 / B41f 3.0 3.0 mediastinum 3 left/right Br40 / B41f COR SPLIT MIPS 5.0 3.0 mediastinum front/back 3 SAG SPLIT MIPS 5.0 3.0 mediastinum left/right Br40 / B41f 3
Pagina 3 — text în engleză
CT Urogram Split-Bolus GE PARAMETERS & RECONS For the Pre Contrast and Split-Bolus phases: Scan
Smart
Slice
Beam
Dose
Scan
Type SFOV kV mA
Range Noise
Index mA Thick Coll Pitch Speed Rot
Time Red ASIR Time LS 16 helical large 120 50-440 16.36 on 2.5 20 1.375 27.50 0.6 NA NA 10.9 Opt 540 helical large 120 50-440 16.36 on 2.5 20 1.375 27.50 0.6 NA NA 10.9 LS VCT 64 helical large body 120 50-650 16.36 on 2.5 40 1.375 55.00 0.5 50 50 4.5 Disc VCT 64 helical large body 120 50-650 16.36 on 2.5 40 1.375 55.00 0.5 NA NA 4.5 PRE CONTRAST PHASE Window
Recon
Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX PRE 2.5 2.5 std full 400/40 head/feet Must be first recon. COR PRE 2.5 2.5 std full 400/40 front/back POST SPLIT-BOLUS PHASE AX SPLIT 2.5 2.5 std full 400/40 head/feet Must be first recon. COR SPLIT 2.5 2.5 std full 400/40 front/back SAG SPLIT 2.5 2.5 std full 400/40 left/right COR SPLIT MIPS 5.0 3.0 std full 400/40 front/back SAG SPLIT MIPS 5.0 3.0 std full 400/40 left/right
Smart
Slice
Beam
Dose
Scan
Type SFOV kV mA
Range Noise
Index mA Thick Coll Pitch Speed Rot
Time Red ASIR Time LS 16 helical large 120 50-440 16.36 on 2.5 20 1.375 27.50 0.6 NA NA 10.9 Opt 540 helical large 120 50-440 16.36 on 2.5 20 1.375 27.50 0.6 NA NA 10.9 LS VCT 64 helical large body 120 50-650 16.36 on 2.5 40 1.375 55.00 0.5 50 50 4.5 Disc VCT 64 helical large body 120 50-650 16.36 on 2.5 40 1.375 55.00 0.5 NA NA 4.5 PRE CONTRAST PHASE Window
Recon
Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX PRE 2.5 2.5 std full 400/40 head/feet Must be first recon. COR PRE 2.5 2.5 std full 400/40 front/back POST SPLIT-BOLUS PHASE AX SPLIT 2.5 2.5 std full 400/40 head/feet Must be first recon. COR SPLIT 2.5 2.5 std full 400/40 front/back SAG SPLIT 2.5 2.5 std full 400/40 left/right COR SPLIT MIPS 5.0 3.0 std full 400/40 front/back SAG SPLIT MIPS 5.0 3.0 std full 400/40 left/right
Pagina 4 — text în engleză
CT Urogram Split-Bolus PHILIPS PARAMETERS & RECONS For the Pre Contrast and Split-Bolus phases: Scan
Dose
3D
Rot Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Time Time Incisive 128 helical 120 115 20 on 1.00 64 0.625 0.75 5.6 PRE CONTRAST PHASE Name of Series Thick Interval Filter Window iDose Recon
Direction AX PRE 3.0 3.0 B mediastinum 3 head/feet COR PRE 3.0 3.0 B mediastinum 3 front/back POST SPLIT-BOLUS PHASE AX SPLIT 3.0 3.0 B mediastinum 3 head/feet COR SPLIT 3.0 3.0 B mediastinum 3 front/back SAG SPLIT 3.0 3.0 B mediastinum 3 left/right COR SPLIT MIPS 5.0 3.0 B mediastinum 3 front/back SAG SPLIT MIPS 5.0 3.0 B mediastinum 3 left/right
Dose
3D
Rot Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Time Time Incisive 128 helical 120 115 20 on 1.00 64 0.625 0.75 5.6 PRE CONTRAST PHASE Name of Series Thick Interval Filter Window iDose Recon
Direction AX PRE 3.0 3.0 B mediastinum 3 head/feet COR PRE 3.0 3.0 B mediastinum 3 front/back POST SPLIT-BOLUS PHASE AX SPLIT 3.0 3.0 B mediastinum 3 head/feet COR SPLIT 3.0 3.0 B mediastinum 3 front/back SAG SPLIT 3.0 3.0 B mediastinum 3 left/right COR SPLIT MIPS 5.0 3.0 B mediastinum 3 front/back SAG SPLIT MIPS 5.0 3.0 B mediastinum 3 left/right