CT — Aortă toracică (MCB)
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MCB Radiology — 2 Aorta Thoracic
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Documentul original MCB — Aortă toracică
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.
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Textul documentului original
Pagina 1 — text în engleză
Updated 05/02/24 CTA Thoracic Aorta (Chest Only) Reviewed 05/14/25 Indications - chest pain, aneurysm, dissection, hemoptysis, aneurysm repair including open repair and endograft. If indication is PE and hemoptysis, tech should contact ordering clinician to pick either PE or hemoptysis which will determine which protocol to use. Bill under CT Angiography Chest w/ and w/o Contrast charge. 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 apices through adrenal glands (obtained during end inspiration). Craniocaudal scan coverage - lung apices through adrenal glands on all phases (obtained during end inspiration). Only do a delayed phase if there is a stent/endograft in the aorta. Adjust FOV (field of view) on topogram to smallest without cropping anatomy. Scan parameters are the same as PE protocol. IV Contrast: Administer weight-based Omnipaque-350 - 1 mL/kg up to 150 mL (100 mL minimum). Inject at 4 mL/sec followed by 40 mL saline flush, 20-gauge or larger in forearm or more proximal. Bolus track off ascending aorta triggered at 100 HU. 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
CTA Thoracic Aorta (Chest Only) SIEMENS PARAMETERS & RECONS For the Pre Contrast, Angio and Delay (5 mins) phases: Scan
Care
Rot Scan
Mode kV mAs Care
Dose kV & Lvl Pitch Acq Coll Time Time Sensation 16 spiral 120 150 on NA 1.15 16 0.75 0.5 10.9 Go Up 32 spiral 110 56 on on 70 1.50 32 0.7 0.8 7.1 Sensation 64 spiral 120 150 on NA 1.20 64 0.6 0.5 6.5 Definition 64 spiral 120 127 on on 1.40 64 0.6 0.3 3.3 Go Top 64 spiral 100 62 on on 70 1.50 64 0.6 0.33 1.7 Drive 128 spiral 100 105 on on 1.20 128 0.6 0.28 1.8 Force 192 spiral 100 105 on on 1.20 192 0.5 0.25 1.3 PRE CONTRAST IR
Recon
Name of Series Thick Interval Window Kernel Lvl Anatomy AX PRE 3.0 3.0 mediastinum head/feet Br40 / B41f 3 ANGIO PHASE AX ANGIO 3.0 3.0 mediastinum head/feet Br40 / B41f 3 AX ANGIO THINS 1.0 1.0 head/feet Br40 / B41f mediastinum 3 COR ANGIO 3.0 3.0 Br40 / B41f mediastinum 3 front/back CANDY CANE ANGIO 3.0 3.0 mediastinum left/right Br40 / B41f 3 AX LUNG 3.0 3.0 lung head/feet Br57 / B70f 3 AX MIPS 8.0 3.0 lung head/feet 3 Br40 / B41f 3D VRT (spin) 0.75 0.5 CT angio Bv36 / B31f DELAY PHASE (5 mins) AX DELAY 3.0 3.0 mediastinum head/feet 3 Br40 / B41f
Care
Rot Scan
Mode kV mAs Care
Dose kV & Lvl Pitch Acq Coll Time Time Sensation 16 spiral 120 150 on NA 1.15 16 0.75 0.5 10.9 Go Up 32 spiral 110 56 on on 70 1.50 32 0.7 0.8 7.1 Sensation 64 spiral 120 150 on NA 1.20 64 0.6 0.5 6.5 Definition 64 spiral 120 127 on on 1.40 64 0.6 0.3 3.3 Go Top 64 spiral 100 62 on on 70 1.50 64 0.6 0.33 1.7 Drive 128 spiral 100 105 on on 1.20 128 0.6 0.28 1.8 Force 192 spiral 100 105 on on 1.20 192 0.5 0.25 1.3 PRE CONTRAST IR
Recon
Name of Series Thick Interval Window Kernel Lvl Anatomy AX PRE 3.0 3.0 mediastinum head/feet Br40 / B41f 3 ANGIO PHASE AX ANGIO 3.0 3.0 mediastinum head/feet Br40 / B41f 3 AX ANGIO THINS 1.0 1.0 head/feet Br40 / B41f mediastinum 3 COR ANGIO 3.0 3.0 Br40 / B41f mediastinum 3 front/back CANDY CANE ANGIO 3.0 3.0 mediastinum left/right Br40 / B41f 3 AX LUNG 3.0 3.0 lung head/feet Br57 / B70f 3 AX MIPS 8.0 3.0 lung head/feet 3 Br40 / B41f 3D VRT (spin) 0.75 0.5 CT angio Bv36 / B31f DELAY PHASE (5 mins) AX DELAY 3.0 3.0 mediastinum head/feet 3 Br40 / B41f
Pagina 3 — text în engleză
CTA Thoracic Aorta (Chest Only) GE PARAMETERS & RECONS For the Pre Contrast, Angio and Delay (5 mins) phases: Scan
Smart
Slice
Beam
Dose
Pitch Speed Rot
Type SFOV kV mA
Range Noise
Index mA Thick Coll Time Red ASIR Scan
Time LS 16 helical large 120 100-440 16.36 on 2.5 20 1.375 27.50 0.5 NA NA 5.5 Opt 540 helical large 120 100-440 16.36 on 2.5 20 1.375 27.50 0.5 NA NA 5.5 LS VCT 64 helical large body 120 100-600 14.14 on 2.5 40 0.984 39.375 0.5 40 40 3.8 Disc VCT 64 helical large body 120 100-600 14.14 on 2.5 40 0.984 39.375 0.5 40 40 3.8 PRE CONTRAST 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. ANGIO PHASE AX ANGIO 2.5 2.5 std full 400/40 head/feet Must be first recon. AX ANGIO THINS 1.25 1.25 std full 400/40 head/feet COR ANGIO 2.5 2.5 std full 400/40 front/back CANDY CANE ANGIO 2.5 2.5 std full 400/40 left/right AX LUNG 2.5 2.5 lung 1600/-600 head/feet AX MIPS 8.0 3.0 std full 1600/-600 head/feet 3D VRT (spin) 0.625 0.625 std full 400/40 DELAY PHASE (5 mins) AX DELAY 2.5 2.5 std full 400/40 Must be first recon. head/feet
Smart
Slice
Beam
Dose
Pitch Speed Rot
Type SFOV kV mA
Range Noise
Index mA Thick Coll Time Red ASIR Scan
Time LS 16 helical large 120 100-440 16.36 on 2.5 20 1.375 27.50 0.5 NA NA 5.5 Opt 540 helical large 120 100-440 16.36 on 2.5 20 1.375 27.50 0.5 NA NA 5.5 LS VCT 64 helical large body 120 100-600 14.14 on 2.5 40 0.984 39.375 0.5 40 40 3.8 Disc VCT 64 helical large body 120 100-600 14.14 on 2.5 40 0.984 39.375 0.5 40 40 3.8 PRE CONTRAST 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. ANGIO PHASE AX ANGIO 2.5 2.5 std full 400/40 head/feet Must be first recon. AX ANGIO THINS 1.25 1.25 std full 400/40 head/feet COR ANGIO 2.5 2.5 std full 400/40 front/back CANDY CANE ANGIO 2.5 2.5 std full 400/40 left/right AX LUNG 2.5 2.5 lung 1600/-600 head/feet AX MIPS 8.0 3.0 std full 1600/-600 head/feet 3D VRT (spin) 0.625 0.625 std full 400/40 DELAY PHASE (5 mins) AX DELAY 2.5 2.5 std full 400/40 Must be first recon. head/feet
Pagina 4 — text în engleză
CTA Thoracic Aorta (Chest Only) PHILIPS PARAMETERS & RECONS For the Pre Contrast, Angio and Delay (5 mins) phases: Scan
Dose
3D
Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Rot Time Time Incisive 128 helical 120 103 20 on 1.00 64 0.625 5.6 0.75 PRE CONTRAST Name of Series Thick Interval Filter Window iDose Recon
Direction AX PRE 3.0 3.0 B mediastinum 3 head/feet ANGIO PHASE AX ANGIO 3.0 3.0 B mediastinum 3 head/feet AX ANGIO THINS 1.0 1.0 B mediastinum 3 head/feet COR ANGIO 3.0 3.0 B mediastinum 3 front/back CANDY CANE ANGIO 3.0 3.0 B mediastinum 3 left/right AX LUNG 3.0 3.0 YA lung 3 head/feet AX MIPS 8.0 3.0 B lung 3 head/feet 3D VRT (spin) 0.75 0.5 DELAY PHASE (5 mins) AX DELAY 3.0 3.0 B mediastinum 3 head/feet
Dose
3D
Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Rot Time Time Incisive 128 helical 120 103 20 on 1.00 64 0.625 5.6 0.75 PRE CONTRAST Name of Series Thick Interval Filter Window iDose Recon
Direction AX PRE 3.0 3.0 B mediastinum 3 head/feet ANGIO PHASE AX ANGIO 3.0 3.0 B mediastinum 3 head/feet AX ANGIO THINS 1.0 1.0 B mediastinum 3 head/feet COR ANGIO 3.0 3.0 B mediastinum 3 front/back CANDY CANE ANGIO 3.0 3.0 B mediastinum 3 left/right AX LUNG 3.0 3.0 YA lung 3 head/feet AX MIPS 8.0 3.0 B lung 3 head/feet 3D VRT (spin) 0.75 0.5 DELAY PHASE (5 mins) AX DELAY 3.0 3.0 B mediastinum 3 head/feet