CT — Torace cu doză redusă (MCB)
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MCB Radiology — 2 Low-Dose
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- 2026-09-27
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Documentul original MCB — Torace cu doză redusă
Protocol · 2 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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Textul documentului original
Pagina 1 — text în engleză
Updated 05/01/24 CT Chest Low-Dose Reviewed 05/14/25 Use this protocol when ordered/protocoled as low-dose, when recommended on a prior CT report or when a screening CT patient doesn't meet screening criteria. This protocol's dose is intermediate between a screening chest dose and a routine chest dose. Use regular CT chest charges. Do not use CT Lung RADS Screening / Follow-up charge. GENERAL SCAN NOTES Move the patient's arms over his/her head if possible. Remove any metal from the imaging field of view. Have the patient cough a few times to clear secretions. This reduces incidence of small lung nodules. Topogram - lung apices through diaphragm (obtained during end inspiration). Craniocaudal scan coverage - lung apices through adrenal glands (obtained during end inspiration). Adjust FOV (field of view) on topogram to smallest without cropping anatomy. Recons are the same as routine chest protocol. IV Contrast: 100 mL Omnipaque-300, inject at 2 mL/sec, 30 secs scan delay. 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. SIEMENS PARAMETERS & RECONS Scan
Care
Rot Scan
Coll Mode kV mAs Care
Dose kV & Lvl Pitch Acq Time Time NA 1.15 16 0.75 0.5 10.9 Sensation 16 spiral 120 60 on on 80 1.50 32 0.7 0.8 7.1 Go Up 32 spiral 130 31 on NA 1.40 64 0.6 0.5 5.6 60 on Sensation 64 spiral 120 Definition 64 spiral on on 1.20 64 0.6 0.5 6.5 120 66 0.6 0.33 2.1 on 80 1.20 64 Go Top 64 spiral 120 37 on Drive 128 120 on 1.20 128 0.6 0.5 3.3 40 on spiral on 1.20 192 0.5 0.5 2.6 Force 192 spiral 110 31 on Recon
Name of Series Thick Interval Kernel Window IR
Lvl Direction AX LUNG 3.0 3.0 Bl57 / B70f lung 3 head/feet AX SOFT 3.0 3.0 Br40 / B41f mediastinum 3 head/feet COR SOFT 3.0 3.0 Br40 / B41f mediastinum 3 front/back SAG SOFT 3.0 3.0 Br40 / B41f mediastinum 3 left/right AX THINS 1.0 0.8 Br40 / B41f mediastinum 3 head/feet AX MIPS 8.0 3.0 Br40 / B41f lung 3 head/feet Send the above recons on the pre contrast scan (if without only) or on the post contrast scan (if IV given). Send only the following recon on the pre contrast scan (if without and with). AX SOFT PRE 3.0 3.0 Br40 / B41f mediastinum 3 head/feet
Care
Rot Scan
Coll Mode kV mAs Care
Dose kV & Lvl Pitch Acq Time Time NA 1.15 16 0.75 0.5 10.9 Sensation 16 spiral 120 60 on on 80 1.50 32 0.7 0.8 7.1 Go Up 32 spiral 130 31 on NA 1.40 64 0.6 0.5 5.6 60 on Sensation 64 spiral 120 Definition 64 spiral on on 1.20 64 0.6 0.5 6.5 120 66 0.6 0.33 2.1 on 80 1.20 64 Go Top 64 spiral 120 37 on Drive 128 120 on 1.20 128 0.6 0.5 3.3 40 on spiral on 1.20 192 0.5 0.5 2.6 Force 192 spiral 110 31 on Recon
Name of Series Thick Interval Kernel Window IR
Lvl Direction AX LUNG 3.0 3.0 Bl57 / B70f lung 3 head/feet AX SOFT 3.0 3.0 Br40 / B41f mediastinum 3 head/feet COR SOFT 3.0 3.0 Br40 / B41f mediastinum 3 front/back SAG SOFT 3.0 3.0 Br40 / B41f mediastinum 3 left/right AX THINS 1.0 0.8 Br40 / B41f mediastinum 3 head/feet AX MIPS 8.0 3.0 Br40 / B41f lung 3 head/feet Send the above recons on the pre contrast scan (if without only) or on the post contrast scan (if IV given). Send only the following recon on the pre contrast scan (if without and with). AX SOFT PRE 3.0 3.0 Br40 / B41f mediastinum 3 head/feet
Pagina 2 — text în engleză
CT Chest Low-Dose GE PARAMETERS & RECONS Scan
Smart
Scan
Slice
Beam
Dose
kV mA
Speed Rot
Thick Pitch Coll Time ASIR Red Type SFOV Range Noise
Index mA Time LS 16 helical large 120 on NA 5.5 100-300 25.46 NA 20 2.5 1.375 27.50 0.5 27.50 0.5 NA NA 5.5 Opt 540 helical large 120 100-300 25.46 on 2.5 20 1.375 on 30 40 2.5 0.984 39.375 0.5 70 3.8 LS VCT 64 helical large body 120 50-300 25.46 39.375 0.5 NA NA on 40 2.5 3.8 0.984 Disc VCT 64 helical large body 120 50-300 25.46 Window
Recon
Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX LUNG 2.5 2.5 lung 1600/-600 head/feet Must be first recon. AX SOFT 2.5 2.5 std full 400/40 head/feet COR SOFT 2.5 2.5 std full 400/40 front/back SAG SOFT 2.5 2.5 std full 400/40 left/right AX THINS 1.25 1.0 std full 400/40 head/feet AX MIPS 8.0 3.0 std full 1600/-600 head/feet Send the above recons on the pre contrast scan (if without only) or on the post contrast scan (if IV given). Send only the following recon on the pre contrast scan (if without and with). AX SOFT PRE 2.5 2.5 std full 400/40 head/feet PHILIPS PARAMETERS & RECONS Scan
Dose
3D
Rot Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Time Time 5.6 Incisive 128 helical 120 55 19 on 1.00 64 0.625 0.75 Recon
Name of Series Thick Interval Filter Window iDose Direction AX LUNG 3.0 3.0 YA lung 3 head/feet AX SOFT 3.0 3.0 B mediastinum 3 head/feet COR SOFT 3.0 3.0 B mediastinum 3 front/back SAG SOFT 3.0 3.0 B mediastinum 3 left/right AX THINS 1.0 0.75 B mediastinum 3 head/feet AX MIPS 8.0 2.0 B lung 3 head/feet Send the above recons on the pre contrast scan (if without only) or on the post contrast scan (if IV given). Send only the following recon on the pre contrast scan (if without and with). AX SOFT PRE 3.0 3.0 B mediastinum 3 head/feet
Smart
Scan
Slice
Beam
Dose
kV mA
Speed Rot
Thick Pitch Coll Time ASIR Red Type SFOV Range Noise
Index mA Time LS 16 helical large 120 on NA 5.5 100-300 25.46 NA 20 2.5 1.375 27.50 0.5 27.50 0.5 NA NA 5.5 Opt 540 helical large 120 100-300 25.46 on 2.5 20 1.375 on 30 40 2.5 0.984 39.375 0.5 70 3.8 LS VCT 64 helical large body 120 50-300 25.46 39.375 0.5 NA NA on 40 2.5 3.8 0.984 Disc VCT 64 helical large body 120 50-300 25.46 Window
Recon
Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX LUNG 2.5 2.5 lung 1600/-600 head/feet Must be first recon. AX SOFT 2.5 2.5 std full 400/40 head/feet COR SOFT 2.5 2.5 std full 400/40 front/back SAG SOFT 2.5 2.5 std full 400/40 left/right AX THINS 1.25 1.0 std full 400/40 head/feet AX MIPS 8.0 3.0 std full 1600/-600 head/feet Send the above recons on the pre contrast scan (if without only) or on the post contrast scan (if IV given). Send only the following recon on the pre contrast scan (if without and with). AX SOFT PRE 2.5 2.5 std full 400/40 head/feet PHILIPS PARAMETERS & RECONS Scan
Dose
3D
Rot Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Time Time 5.6 Incisive 128 helical 120 55 19 on 1.00 64 0.625 0.75 Recon
Name of Series Thick Interval Filter Window iDose Direction AX LUNG 3.0 3.0 YA lung 3 head/feet AX SOFT 3.0 3.0 B mediastinum 3 head/feet COR SOFT 3.0 3.0 B mediastinum 3 front/back SAG SOFT 3.0 3.0 B mediastinum 3 left/right AX THINS 1.0 0.75 B mediastinum 3 head/feet AX MIPS 8.0 2.0 B lung 3 head/feet Send the above recons on the pre contrast scan (if without only) or on the post contrast scan (if IV given). Send only the following recon on the pre contrast scan (if without and with). AX SOFT PRE 3.0 3.0 B mediastinum 3 head/feet