CT — Paratiroide (MCB)
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MCB Radiology — 12 Neck Parathyroid
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- 2026-09-27
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Documentul original MCB — Paratiroide
Protocol · 4 pagini · consultat la 2026-09-27.
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Instrucțiunile, valorile și ilustrațiile din documentul original sunt păstrate în engleză. Titlul și navigarea sunt în română.
Pagina 1
Pagina 2
Pagina 3
Pagina 4
Textul documentului original
Pagina 1 — text în engleză
Updated 05/02/24 CT Neck Parathyroid 4D Reviewed 05/14/25 Indications - hyperparathyroidism, parathyroid hyperplasia, parathyroid adenoma, elevated PTH level, hypercalcemia. GENERAL SCAN NOTES Remove any metal from the imaging field of view (particularly dentures). Use non metallic markers for palpable areas. Do not use metallic skin markers areas due to streak artifact. Patient positioning is very important to decrease beam hardening artifact from shoulders: Place rolled towel/sheet between patient's shoulder blades to drop shoulders posteriorly. Have patient pull a folded sheet/towel wrapped around foot with both hands to pull shoulders towards feet. Instruct patient to not swallowing during imaging. Topogram - orbital floor through inferior aspect of main pulmonary artery. Craniocaudal coverage - orbital floor through inferior aspect of main pulmonary artery on all phases. Adjust FOV (field of view) on topogram to smallest without cropping anatomy. IV Contrast: Administer 100 mL Omnipaque-300. Inject at 4 mL/sec followed by 40 mL saline flush, 20-gauge or larger in forearm or more proximal. 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
CT Neck Parathyroid 4D SIEMENS PARAMETERS & RECONS For the Pre Contrast, 25 secs and 85 secs phases: Scan
Care
Scan
Mode kV mAs Care
Dose kV & Lvl Pitch Acq Coll Rot Time Time Sensation 16 spiral 120 150 on NA 0.80 16 0.8 0.75 15.6 Go Up 32 spiral 130 102 on on 155 0.80 32 0.7 1.0 11.2 Sensation 64 spiral 120 150 on NA 0.90 64 0.6 1.0 11.6 Definition 64 spiral 120 165 on on 0.80 64 0.6 1.0 13.0 Go Top 64 spiral 120 119 on on 155 0.80 64 0.6 1.0 6.5 Drive 128 spiral 120 116 on on 0.80 128 0.6 1.0 6.5 Force 192 spiral 120 116 on on 0.80 192 0.6 1.0 4.3 PRE CONTRAST Recon
Name of Series Thick Interval Window Kernel Direction AX SOFT 3.0 3.0 abdomen head/feet Br40 / B31s COR SOFT 3.0 3.0 abdomen front/back Br40 / B31s 25 SEC DELAY PHASE AX 25 SECS 3.0 3.0 abdomen head/feet Br40 / B31s COR 25 SECS 3.0 3.0 abdomen front/back Br40 / B31s SAG 25 SECS 3.0 3.0 abdomen left/right Br40 / B31s AX 25 SECS THINS 1.0 1.0 abdomen head/feet Br40 / B31s 85 SEC DELAY PHASE AX 85 SECS 3.0 3.0 abdomen head/feet Br40 / B31s COR 85 SECS 3.0 3.0 abdomen front/back Br40 / B31s SAG 85 SECS 3.0 3.0 abdomen left/right Br40 / B31s AX 85 SECS THINS 1.0 1.0 abdomen head/feet Br40 / B31s
Care
Scan
Mode kV mAs Care
Dose kV & Lvl Pitch Acq Coll Rot Time Time Sensation 16 spiral 120 150 on NA 0.80 16 0.8 0.75 15.6 Go Up 32 spiral 130 102 on on 155 0.80 32 0.7 1.0 11.2 Sensation 64 spiral 120 150 on NA 0.90 64 0.6 1.0 11.6 Definition 64 spiral 120 165 on on 0.80 64 0.6 1.0 13.0 Go Top 64 spiral 120 119 on on 155 0.80 64 0.6 1.0 6.5 Drive 128 spiral 120 116 on on 0.80 128 0.6 1.0 6.5 Force 192 spiral 120 116 on on 0.80 192 0.6 1.0 4.3 PRE CONTRAST Recon
Name of Series Thick Interval Window Kernel Direction AX SOFT 3.0 3.0 abdomen head/feet Br40 / B31s COR SOFT 3.0 3.0 abdomen front/back Br40 / B31s 25 SEC DELAY PHASE AX 25 SECS 3.0 3.0 abdomen head/feet Br40 / B31s COR 25 SECS 3.0 3.0 abdomen front/back Br40 / B31s SAG 25 SECS 3.0 3.0 abdomen left/right Br40 / B31s AX 25 SECS THINS 1.0 1.0 abdomen head/feet Br40 / B31s 85 SEC DELAY PHASE AX 85 SECS 3.0 3.0 abdomen head/feet Br40 / B31s COR 85 SECS 3.0 3.0 abdomen front/back Br40 / B31s SAG 85 SECS 3.0 3.0 abdomen left/right Br40 / B31s AX 85 SECS THINS 1.0 1.0 abdomen head/feet Br40 / B31s
Pagina 3 — text în engleză
CT Neck Parathyroid 4D GE PARAMETERS & RECONS For the Pre Contrast, 25 secs and 85 secs phases: Scan
Smart
Slice
Beam
Dose
Type SFOV kV mA
Range Noise
Index mA Thick Coll Pitch Speed Rot
Time Red ASIR Scan
Time LS 16 helical large 120 100-440 8.60 1.375 13.75 0.6 on 2.5 10 NA NA 8.7 Opt 540 helical large 120 100-440 8.60 on 2.5 10 1.375 13.75 0.6 NA NA 8.7 LS VCT 64 helical small body 120 100-335 9.10 on 2.5 40 0.984 39.375 0.5 30 30 2.5 Disc VCT 64 helical small body 120 100-335 9.10 on 2.5 40 0.984 39.375 0.5 NA NA 2.5 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. COR PRE 2.5 2.5 std full 400/40 front/back 25 SEC DELAY PHASE AX 25 SECS 2.5 2.5 std full 400/40 head/feet Must be first recon. COR 25 SECS 2.5 2.5 std full 400/40 front/back SAG 25 SECS 2.5 2.5 std full 400/40 left/right AX 25 SECS AX THINS 1.25 1.25 std full 400/40 head/feet 85 SEC DELAY PHASE AX 85 SECS 2.5 2.5 std full 400/40 head/feet Must be first recon. COR 85 SECS 2.5 2.5 std full 400/40 front/back SAG 85 SECS 2.5 2.5 std full 400/40 left/right AX 85 SECS AX THINS 1.25 1.25 std full 400/40 head/feet
Smart
Slice
Beam
Dose
Type SFOV kV mA
Range Noise
Index mA Thick Coll Pitch Speed Rot
Time Red ASIR Scan
Time LS 16 helical large 120 100-440 8.60 1.375 13.75 0.6 on 2.5 10 NA NA 8.7 Opt 540 helical large 120 100-440 8.60 on 2.5 10 1.375 13.75 0.6 NA NA 8.7 LS VCT 64 helical small body 120 100-335 9.10 on 2.5 40 0.984 39.375 0.5 30 30 2.5 Disc VCT 64 helical small body 120 100-335 9.10 on 2.5 40 0.984 39.375 0.5 NA NA 2.5 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. COR PRE 2.5 2.5 std full 400/40 front/back 25 SEC DELAY PHASE AX 25 SECS 2.5 2.5 std full 400/40 head/feet Must be first recon. COR 25 SECS 2.5 2.5 std full 400/40 front/back SAG 25 SECS 2.5 2.5 std full 400/40 left/right AX 25 SECS AX THINS 1.25 1.25 std full 400/40 head/feet 85 SEC DELAY PHASE AX 85 SECS 2.5 2.5 std full 400/40 head/feet Must be first recon. COR 85 SECS 2.5 2.5 std full 400/40 front/back SAG 85 SECS 2.5 2.5 std full 400/40 left/right AX 85 SECS AX THINS 1.25 1.25 std full 400/40 head/feet
Pagina 4 — text în engleză
CT Neck Parathyroid 4D PHILIPS PARAMETERS & RECONS For the Pre Contrast, 25 secs and 85 secs phases: Scan
Dose
3D
Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Rot Time Time Incisive 128 helical 120 129 22 on 0.80 64 0.625 0.75 4.7 PRE CONTRAST Name of Series Thick Interval Filter Window iDose Recon
Direction AX SOFT 3.0 3.0 3 B soft tissue neck head/feet COR SOFT 3.0 3.0 B soft tissue neck 3 front/back 25 SEC DELAY PHASE AX 25 SECS 3.0 3.0 B soft tissue neck 3 head/feet COR 25 SECS 3.0 3.0 B soft tissue neck 3 front/back SAG 25 SECS 3.0 3.0 B soft tissue neck 3 left/right AX 25 SECS THINS 1.0 1.0 B soft tissue neck 3 head/feet 85 SEC DELAY PHASE AX 85 SECS 3.0 3.0 B soft tissue neck 3 head/feet COR 85 SECS 3.0 3.0 B soft tissue neck 3 front/back SAG 85 SECS 3.0 3.0 B soft tissue neck 3 left/right AX 85 SECS THINS 1.0 1.0 B soft tissue neck 3 head/feet
Dose
3D
Scan
Mode kV Avg
mAs Index Dose Pitch Detect Colli Rot Time Time Incisive 128 helical 120 129 22 on 0.80 64 0.625 0.75 4.7 PRE CONTRAST Name of Series Thick Interval Filter Window iDose Recon
Direction AX SOFT 3.0 3.0 3 B soft tissue neck head/feet COR SOFT 3.0 3.0 B soft tissue neck 3 front/back 25 SEC DELAY PHASE AX 25 SECS 3.0 3.0 B soft tissue neck 3 head/feet COR 25 SECS 3.0 3.0 B soft tissue neck 3 front/back SAG 25 SECS 3.0 3.0 B soft tissue neck 3 left/right AX 25 SECS THINS 1.0 1.0 B soft tissue neck 3 head/feet 85 SEC DELAY PHASE AX 85 SECS 3.0 3.0 B soft tissue neck 3 head/feet COR 85 SECS 3.0 3.0 B soft tissue neck 3 front/back SAG 85 SECS 3.0 3.0 B soft tissue neck 3 left/right AX 85 SECS THINS 1.0 1.0 B soft tissue neck 3 head/feet