CT — Claviculă (MCB)

Updated 01/18/25 CT Clavicle Reviewed 05/15/25 Indications - trauma, fracture, dislocation, pain, bone tumor, soft tissue mass, infection, abscess, soft tissue gas, osteomyelitis, pre/post surgical evaluation. Bill under CT Shoulder charges. GENERAL SCAN NOTES Have the arm on the side of interest by the patient's side and the other arm over his/her head. Remove any metal from the imaging field of view. Topogram - from above top of shoulder to proximal humerus. Craniocaudal scan coverage - 3 cm above most superior portion of clavicle to 3 cm below most inferior portion. Side side scan coverage - Lateral to AC joint through sternal manubrium. Adjust FOV (field of view) on topogram to smallest without cropping anatomy. IV Contrast: 100 mL Omnipaque-300, inject at 2.5 mL/sec, 60 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
Acq Coll Rot Mode kV mAs Care
Dose kV & Lvl Pitch Time Time Sensation 16 spiral 120 150 on NA 0.80 16 0.75 1.0 10.4 Go Up 32 spiral 130 84 on on 130 0.80 32 0.7 1.0 5.6 Sensation 64 spiral 120 150 on 0.90 64 0.6 1.0 5.8 NA Definition 64 spiral 120 165 on on 0.80 64 0.6 1.0 6.5 Go Top 64 spiral 130 100 on 0.80 64 0.6 1.0 3.3 on 130 Drive 128 spiral 120 116 on on 0.80 128 0.6 1.0 3.3 Force 192 spiral 120 116 on on 0.80 192 0.6 1.0 2.2 IR
Recon
Name of Series Thick Interval Kernel Window Lvl Direction AX BONE 2.0 2.0 Br59 / B60f bone/osteo 3 head/feet COR BONE 2.0 2.0 Br59 / B60f bone/osteo 3 front/back SAG BONE 2.0 2.0 Br59 / B60f bone/osteo 3 left/right SHORT BONE 2.0 2.0 Br59 / B60f bone/osteo 3 left/right 2.0 LONG BONE 2.0 Br59 / B60f bone/osteo 3 head/feet AX SOFT 2.0 2.0 Br40 / B31f abdomen 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 2.0 2.0 Br40 / B31f abdomen 3 head/feet

CT Clavicle GE PARAMETERS & RECONS Scan
Smart
Slice
Beam
Dose
Pitch Speed Rot
Type SFOV kV mA
Range Noise
Index mA Thick Coll Time Red ASIR Scan
Time on 1.25 10 0.938 9.37 0.5 LS 16 helical large 120 100-440 17.68 NA NA 5.3 Opt 540 helical large 120 100-440 17.68 on 1.25 10 0.938 9.37 0.5 NA NA 5.3 1.3 40 0.984 39.37 0.5 20 20 LS VCT 64 helical large body 120 100-450 22.63 on 1.25 0.516 20.625 0.6 Disc VCT 64 helical large body 140 100-610 20.00 on 1.25 40 NA NA 2.9 Window
Recon Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX BONE 1.25 1.25 bone full 2500/480 head/feet Must be first recon. COR BONE 1.25 1.25 bone full 2500/480 front/back SAG BONE 1.25 1.25 bone full 2500/480 left/right SHORT BONE 1.25 1.25 bone full 2500/480 left/right LONG BONE 1.25 1.25 bone full 2500/480 head/feet AX SOFT 1.25 1.25 std full 400/40 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 1.25 1.25 std full 400/40 head/feet PHILIPS PARAMETERS & RECONS Scan
Dose
3D
Scan
Pitch Detect Colli Rot Mode kV Avg
mAs Index Dose Time Time Incisive 128 helical 120 129 22 on 0.80 64 0.625 1.00 3.1 Recon
Name of Series Thick Interval Filter Window iDose Direction AX BONE 2.0 2.0 YC bone 3 head/feet COR BONE 2.0 2.0 YC bone 3 front/back SAG BONE 2.0 2.0 YC bone 3 left/right SHORT BONE 2.0 2.0 YC bone 3 left/right LONG BONE 2.0 2.0 YC bone 3 head/feet AX SOFT 2.0 2.0 B abdomen 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 2.0 2.0 B abdomen 3 head/feet

CT Clavicle Axial Recon (off coronal plane) Coronal Recon (off sagittal plane) Sagittal Recon (off axial plane)

CT Clavicle Short Recon (off double oblique coronal plane) Long Recon (off double oblique coronal plane)