CT — Umăr Catalyst (MCB)

Updated 09/25/25 CT Catalyst Shoulder Reviewed 09/25/25 Indications - pre surgical evaluation for shoulder joint replacement. Bill under CT Shoulder w/o Contrast charge. GENERAL SCAN NOTES Remove any metal from the imaging field of view. Arms in neutral position by patient's side. Topogram - from above top of shoulder to proximal humerus. Craniocaudal scan coverage - from above top of clavicle to proximal humerus. Include entire ipsilateral scapula in FOV. Matrix must be 512 x 512. IV Contrast: not given for this protocol. 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 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 NA 0.90 64 0.6 1.0 5.8 Definition 64 spiral 120 165 on on 0.80 64 0.6 1.0 6.5 Go Top 64 spiral 130 100 on on 130 0.80 64 0.6 1.0 3.3 on 0.80 Drive 128 spiral 120 116 on 128 0.6 1.0 3.3 Force 192 spiral 120 116 on on 0.80 192 0.6 1.0 2.2 Name of Series IR
Recon
Thick Interval Kernel Window Lvl Direction AX BONE 3.0 3.0 Br59 / B60f bone/osteo 3 head/feet COR BONE 3.0 3.0 Br59 / B60f bone/osteo 3 front/back SAG BONE 3.0 3.0 Br59 / B60f bone/osteo 3 left/right AX SOFT head/feet 3.0 3.0 Br40 / B31f abdomen 3 Catalyst specific recon. AX THINS 0.625 0.5 Br40 / B31f bone/osteo 3 head/feet If the scan parameters do not allow for 0.625 mm thickness, pick as close to 0.5 mm as the scanner will allow but no thicker than 1.0 mm. The interval cannot be thicker than 0.5 mm.

CT Catalyst Shoulder 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 2.5 10 0.938 9.37 0.5 LS 16 helical large 120 100-440 12.50 NA NA 5.3 Opt 540 helical large 120 100-440 12.50 on 2.5 10 0.938 9.37 0.5 NA NA 5.3 40 0.984 39.37 0.5 20 20 LS VCT 64 helical large body 120 100-450 16.00 on 2.5 1.3 Disc VCT 64 helical large body 140 100-610 14.14 on 2.5 40 0.516 20.625 0.6 NA NA 2.9 Window
Recon Name of Series Thickness Interval Recon
Algorithm Width/Level Direction AX BONE 2.5 2.5 bone full 2500/480 head/feet Must be first recon. COR BONE 2.5 2.5 bone full 2500/480 front/back SAG BONE 2.5 2.5 bone full 2500/480 left/right AX SOFT 2.5 2.5 std full 400/40 head/feet AX THINS 0.625 0.5 std full 2500/480 head/feet Catalyst specific recon. If the scan parameters do not allow for 0.625 mm thickness, pick as close to 0.5 mm as the scanner will allow but no thicker than 1.0 mm. The interval cannot be thicker than 0.5 mm. 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 3.0 3.0 YC bone 3 head/feet COR BONE 3.0 3.0 YC bone 3 front/back SAG BONE 3.0 3.0 YC bone 3 left/right head/feet AX SOFT 3.0 3.0 B abdomen 3 head/feet Catalyst specific recon. AX THINS 0.625 0.5 B bone 3 If the scan parameters do not allow for 0.625 mm thickness, pick as close to 0.5 mm as the scanner will allow but no thicker than 1.0 mm. The interval cannot be thicker than 0.5 mm.

CT Catalyst Shoulder Coronal Plane Sagittal Plane

Archer™ 3D Targeting by Catalyst OrthoScience® POWERED BY CT PROTOCOL REFERENCE CARD PATIENT POSITION When positioning the patient, ensure the patient is in supine position (SFF: Supine, Feet First). Additionally, ensure the patient’s shoulders and arms are in a natural position, with the arms lying alongside the body. The patient shall not move during the scan procedure. ANATOMY TO SCAN When scanning the patient, be certain the scan captures the entire scapula and proximal humerus, from the acromioclavicular joint to the bottom end of the scapula. The acromion and coracoid are also required for the scan. SCAN PARAMETERS Scan Type CT Scan without contrast (no arthrography) Axial Slice Thickness Slice thickness: 0.5mm is preferred; 1.0mm is acceptable Slice increment: 0.0mm - 0.5 mm Slice increment should NOT be greater than the slice thickness Field Of View (FOV) FOV includes the whole scapula
and the proximal humerus.
It starts a few slices above the
AC joint. DO NOT Inject contrast product Change the coordinates system during the acquisition Change the image parameters Merge several CT scan acquisitions into one Matrix 512 x 512 Reconstruction Parameters Standard algorithm without edge enhancement Bone filter is suitable Any filter beneficial to the diagnosis (e.g., metal artifact reduction) can be additionally calculated No gantry tilt No oblique reconstructions DATA FORMAT The CT scan must be exported as a primary scan in DICOM format without compression, axial slices only. ADDITIONAL REQUIREMENTS The original data must be archived by the radiology center. Anonymization of images is kept at the discretion of the hospital policy. Patient’s data will be pseudonymized when fed into the software (first 3 letters of last name, first 3 letters of first name). ® indicates U.S. trademark registration. All trademarks and/or images are the property of their respective owners or holders. ©2021 Catalyst OrthoScience Inc. All rights reserved. Catalyst OrthoScience Inc. • 14710 Tamiami Trail N. Suite 102 Naples, FL 34110 (800) 587.5137

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