CT — Torace de rutină (MCB)

Updated 05/01/24 CT Chest Routine Reviewed 05/14/25 Indications - cough, shortness of breath, chest pain, infection, pneumonia, hemoptysis, dyspnea, lung nodule, lung mass, abnormal chest radiograph, etc. 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. 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
Scan
Pitch Acq Coll Rot Mode kV mAs Care
Dose kV & Lvl Time Time Sensation 16 spiral 120 0.5 100 on 1.15 16 0.75 NA 10.9 Go Up 32 spiral 130 51 on 1.50 32 0.7 0.8 on 80 7.1 Sensation 64 spiral 120 100 on NA 1.40 64 0.6 0.5 5.6 Definition 64 spiral 120 110 on on 1.20 64 0.6 0.5 6.5 Go Top 64 spiral 120 62 on on 80 1.20 64 0.6 0.33 2.1 Drive 128 spiral 120 66 on 1.20 128 0.6 on 0.5 3.3 Force 192 spiral 110 51 on on 1.20 192 0.5 0.5 2.6 IR
Recon
Name of Series Thick Interval Kernel Window Lvl Direction AX LUNG 3.0 3.0 Bl57 / B70f 3 lung head/feet AX SOFT 3.0 3.0 Br40 / B41f 3 mediastinum head/feet COR SOFT 3.0 3.0 Br40 / B41f 3 mediastinum front/back SAG SOFT 3.0 3.0 Br40 / B41f 3 mediastinum left/right AX THINS 1.0 0.8 Br40 / B41f 3 mediastinum head/feet AX MIPS 8.0 3.0 Br40 / B41f 3 lung 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 3 mediastinum head/feet

CT Chest Routine GE PARAMETERS & RECONS Scan
Smart
Slice
Beam
Rot
Dose
Scan
Type SFOV kV mA
Range Noise
Index mA Thick Pitch Speed Coll Time ASIR Red Time LS 16 helical large 120 100-440 16.36 on NA NA 20 2.5 1.375 27.50 0.5 5.5 Opt 540 helical large 120 100-440 16.36 20 2.5 1.375 on 27.50 0.5 NA NA 5.5 LS VCT 64 helical large body 120 100-650 18.38 on 1.375 55.00 0.4 50 50 40 2.5 2.2 Disc VCT 64 helical large body 120 100-650 18.38 on NA 55.00 0.4 NA 40 2.5 1.375 2.2 Recon
Window
Recon
Name of Series Thickness Interval 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 Detect Colli Mode kV Avg
mAs Index Dose Pitch Scan
Time Time Incisive 128 helical 120 92 19 on 1.00 64 0.625 5.6 0.75 Name of Series Thick Interval Filter Window Recon
Direction iDose AX LUNG 3.0 3.0 YA lung head/feet 3 AX SOFT 3.0 3.0 B mediastinum head/feet 3 COR SOFT 3.0 3.0 B mediastinum front/back 3 SAG SOFT 3.0 3.0 B mediastinum left/right 3 AX THINS 1.0 0.75 B mediastinum 3 head/feet AX MIPS 8.0 2.0 B lung head/feet 3 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