HRRA protocols: CT
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CT Head, without contrast
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Indications and preparation
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Indications:- memory loss, shunt check, TIA, trauma, AMS, CVA, MVA, HA, dementia, hemorrage, alzheimers, dizziness, ataxia
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Preparation:- none
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Acquisitionsscan delayrespirationanatomic coverage
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noncontrastn/an/a- base of skull to top of head
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ParameterskVpmAscollimationpitchdirection
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Siemens 12812032032 x1.2axial scanbottom to top
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Siemens 1612035012 x1.5axial scanbottom to top
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GE 64120auto MA5.0 mm/20 intervalaxial scanbottom to top
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GE 16120auto MA5.0 mm/10 intervalaxial scanbottom to top
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Comments:- scan in standard algorithm; WW 90 WL 35 ASIR 30% (GE 64)
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Reconstructionscoverageplanethickness/incrementalgorithmwindow W/L
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GE 64entire volumeAX5.0/20bone plus2000/200
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GE 16entire volumeAX5.0/10bone plus2000/200
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Siemens 128entire volumeAX5.0/32x1.2bone2500/450
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Siemens 16entire volumeAX4.5bone
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Comments:Siemens 16
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Add sagittal and coronal reformations to all in standard algorithm, WW 90 WL 35
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CT Head, with contrast
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Indications and preparation
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Indications:- mets, hx of cancer, AIDS, abscess, meningitis, tumor
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Preparation:- NPO 2 hours prior to scan
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Contrasttyperatevolumesaline flush
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intravenousnonionic2.5cc/sec80cc0
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Acquisitionscan delayrespirationanatomic coverage
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post-contrast2-3minutesn/a- base of skull to top of head
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ParameterskVpmAscollimationpitchdirection
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Siemens 1281203205.0/32x1.2axialbottom to top
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Siemens 1612035012/1.5bottom to top
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GE 64120auto MA5.0mm/ 20 intervalaxial scanbottom to top
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GE 16120auto MA5.0mm/ 10 intervalaxial scanbottom to top
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Comments:- scan in standard algorithm; WW 90 WL 35 ASIR 30% (GE 64)
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Reconstructionscoverageplanethickness/incrementalgorithmwindow W/L
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GE 64entire volumeAX5.0/20bone plus2000/200
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GE 16entire volumeAX5.0/10bone plus2000/200
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Siemens 16entire volumeAX4.5bone
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Siemens 128entire volumeAX5.0/32x1.2bone2500/450
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Siemens 4entire volumeAX5/2.5boneKernel-H60s sharp
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Comments: Siemens 16
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CTA and CTV Head
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Indications and preparation
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Indications:- CVA, aneurysm, stroke
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Preparation:- NPO
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Contrasttyperatevolumesaline flush
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intravenous- nonionic5cc/sec20cc test injection; 80cc for scan50cc after test; 50cc for scan
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Comments:  - bolus track on SIEMENS with 100 cc and 50cc IV flush
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Acquisitionscan delayrespirationanatomic coverage
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test injectionOn/a- C-2
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post-contrastdepends on test inject'nn/a- C-2 to top of head
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ParameterskVpmAscollimationpitchdirection
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Siemens 128Care kVCare Dose 4D3.0x/ 123x0.60.45bottom to top
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Siemens 1612020016x.750.65arch to top
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GE 64120auto MA1.25 x 1.250.516:1bottom to top
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GE 16120auto MA1.25 x 1.250.562:1bottom to top
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Comments: - CTV coverage from skull base to vertex with delay based on venous tracking parameters (typically 30-45 seconds should be adequate if bolus track not used). Sagittal and coronal reformats with MIP reconstructions.
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Reconstructionscoverageplanethickness/incrementalgorithmwindow W/L
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GE 64, GE 16entire volumeAX0.625/0.625standard600/250
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GE 64, GE 16entire volumeSAG/COR MIP5.0/1.0standard600/250
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Comments:- thin reformats sent out for 3D reconstructions on CTA
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CTA Head and Neck
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Indications and preparation
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Indications:- CVA, aneurysm, stroke, stenosis
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Preparation:- NPO
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Contrasttyperatevolumesaline flush
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intravenous- nonionic5cc/sec80cc50cc
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Comments:  - bolus track on SIEMENS with 100 cc and 50cc IV flush
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Acquisitionscan delayrespirationanatomic coverage
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post-contrastsmart prep arch n/a- below arch to top of head
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ParameterskVpmAscollimationpitchdirection
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Siemens 128Care kVCare Dose 4D3.0/123x0.60.55bottom to top
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Siemens 1612020016x.750.65bottom to top
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GE 64120Auto MA2.5 x 2.50.984:1bottom to top
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GE 16120Auto MA2.5 x 2.50.938:1bottom to top
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Reconstructionscoverageplanethickness/incrementalgorithmwindow W/L
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Siemens 128entire volumeAxial0.625mmx0.625mmstandard700/80
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GE 64, GE 16entire volumeAxial0.625/0.625standard600/250
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GE 64, GE 16entire volumeCOR/bilat SAG oblique1.0/1.0standard600/250
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GE 64, GE 16head onlyAX/COR/SAG MIP5.0/1.0standard600/250
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Siemens 16Head MIP3 plane5.0/1.0
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Siemens 16neckCOR/SAG Oblique1.0/1.0
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Siemens 128neckCOR5.0/1.0standard700/80
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Siemens 128Rt&Lt obliquesSAG5.0/1.0standard950/250
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Siemens 128head onlyAX/COR/SAG MIP5.0/1.0standard700/80
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Comments:- thin reformats sent out for 3D reconstructions
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Stealth Brain/Deep Brain Stimulator
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Indications and preparation
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Indications:- pre-op
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Preparation:- none
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Contrasttyperatevolumesaline flush
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- none
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Acquisitionscan delayrespirationanatomic coverage
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noncontrastn/an/a- top of head through maxillary sinuses
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ParameterskVpmAscollimationpitchdirection
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Siemens 128120CareDose 4D0.6mm/128x0.60.55Bottom to top
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GE 64120Auto MA1.25 x 1.250.531:1top to bottom
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GE 16120Auto MA1.25 x 1.250.562:1top to bottom
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Comments: - include all soft tissue including top of head WW 90 WL 35
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Head and CTA/CTV
Orbits
T-bone
Face
Sinuses
Neck
A/P and Body CTA
Pelvis
CT Cystogram
Liver
Chest
Sheet2
Kidney
Adrenal
Pancreas
Spine
Extremity
HeadCT16SiemensXL
 
 
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