CT CT-
QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
CT Angiograms:MIP(30mm)
: MD-CTA vs. MRA MD-CTA CTA MRA
CT
CT CT (30 (30cm) cm) 5.66 5.66 0.5 0.5sec sec 53/64= 53/64= 0.8281 0.8281 0.5 0.5mm mm 10 10 0.5 0.5sec sec 15/16= 15/16= 0.9375 0.9375 1mm mm 25 25 0.5 0.5sec sec 6/4= 6/4= 1.5 1.5 1mm mm 28 28 0.7 0.7sec sec 1.5 1.5 5mm mm Rotation Rotation Time Time Helical Helical Pitch Pitch
30 30cm 64 CT /
Enhancement Unit(EU) Sixteen-Detector tector Row CT Angiography of Carotid Arteries: Comparison of Different Volumes of Contrast Material with and without a Bolus Chaser (Radiology 2005;237:555-562.) 562.)
QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
20 20mL ml 3mL/sec /sec 1mL/sec /sec 1,200 1,200
Bolus Tracking/Test Injection Bolus Tracking/Test Injection
Bolus Tracking/Test Injection Monitoring : SVC C-4 ROI Trigger:160HU120EU Delay Time :12 4ml/sec 7
Bolus Tracking/Test Injection SVC C 4 50mm
CEA(carotid endartetectomy) CAS(carotid artery stenting) MDCT
0.35mm / 0.5mm Tilt 0 H.P 11 Tilt 10 H.P 11 Tilt 10 H.P 15 Tilt 10 H.P 19 WL:-480 / WW:180
0.35mm / 0.5mm Tilt 0 H.P 11 Tilt 0 H.P 11 FC51 Tilt 13 H.P 11 Tilt 0 H.P 11 1mmx16 WL:-480 / WW:180
Tilt 0 Pitch 11 Tilt 10 Pitch 11 Tilt 10 Pitch 19 Tilt 13 Pitch 11
(Craniocaudalscan) scan) (Caudocranialscan) 16 CT Angiography 2006 11
CT Angiography Caudocranial scan Craniocaudal scan Artifacts
28 28 Caudocranial Caudocranial scan scan 2005 2005 11 11 2006 2006 5 Craniocaudal Craniocaudal scan scan 2006 2006 6 2006 2006 8 21 21 7 72 72 58 58 84 84 CT CT Aquilion16 Aquilion16 GX GX ZIOSTATION ZIOSTATION system 610 system 610
1 16 11 ( Gantry rotation time 120 150 Real EC 7.5 RASP filter
CT Angiograms:MIP(30mm) Caudocranial scan Craniocaudal scan
G Caudocranial Caudocranial scan scan L/ L/sec sec L Craniocaudal Craniocaudal scan scan L/ L/sec sec L L/ L/sec sec L I/mL I/mL
Bolus tracking Real Prep. Region of interest ROI HU Trigger Trigger Caudocranial Caudocranialscan Craniocaudal Craniocaudalscan
Caudocranial scan Caudocranial scan Craniocaudal scan Craniocaudal scan
Caudocranial scan( ) ml
Craniocaudal scan( ) ml
VR MIP MIP Lat.
Artifacts Streak artifacts 2 3 Streak artifacts Streak artifacts p.
Score 0 Score 1 Score 2 Score 3
CT Angiograms:Axial(1mm) Caudocranial scan Craniocaudal scan
CT CT....................... p HU HU
CT CT....................... p HU HU
................ Right Right Left Left p
CT
CT
Craniocaudal scan Caudocranial scan CT Angiography Craniocaudal scan Caudocranial Caudocranialscan CT
Craniocaudal scan CT HU Streak artifacts L L 2
Craniocaudal scan Streak artifacts
, CT AEC (Auto ma,care Dose,Real EC ) AEC
Axial MPR multi-planar reconstruction/reformation Sagital / Coronal / CPR MIP maximum intensity projection VR volume rendering
Axial > MPR > MIP > VR VR VR CT CT
Axial Thin Slice(1mm) FOV 150 150mm MPR CPR oblique angle MPR Thin MIP 4mm mm MIP VR
NASCET NASCET 1 A/C A/C 100 100 30 30 49 49 : 50 50 69 69 : 70 70 : (1 (1-1.4/5.9) 1.4/5.9)x100=76.3% x100=76.3%
VR CPR
VR Narrow-band VR Gradient MIP CPR Stretch MPR
CPR QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB 512512matrix FOV
MIP Thin MIP coronal QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB 4mmSlice Thin MIP coronal MIP
VR QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
plaque imaging plaque imaging
CT 0 050 50120 120400 400 HU
QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ ÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-Ç
QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
MIP Coronal / Sagital QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
VR QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
CPR QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB
CPR QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB QuickTimeý Dz êlí ÉvÉçÉOÉâÉÄ Ç Ç±ÇÃÉsÉNÉ`ÉÉǾå ÇÈÇžÇ½Ç ÇÕïKóvÇ-ÇÅB