Everything You Need To Know About:


Specifications, Parts, Repairs, Service

Brief Overview About The GE CT VCT 64

The LightSpeed VCT has the ability to generate images at very small spacing and thereby exceed the number of native acquisition channels. When the scanner operates in a helical mode of data acquisition with its 64×0.625 mm detector configuration and a 1.375:1 helical pitch, images can be reconstructed spacings as small as 0.1 mm. The table below shows the average number of slices that can be generated per 360 deg of gantry rotation. The average number of slices per gantry rotation is calculated by dividing the total number of reconstructed slices by the number of rotations during the data acquisition.


Number of rotations Coverage in z (mm) Total number of reconstructed slices (images) Average number of slices
1.71 30 301 176
2.00 46 461 230
3.00 101 1011 337
4.00 156 1561 390
5.00 211 2111 422
6.00 266 2661 443



Premium Image Quality Helical Example

Premium image quality (near axial image quality) is achieved as follows:

  • Detector macro-row size = 50% of the desired image slice thickness.
  • Pitch (table travel over beam collimation) = at lowest pitch

Cardiac Overview

Cardiac helical is a lower pitch helical scan is available for cardiac applications in conjunction with
the CardIQ SnapShot option. In this scanning mode, heart rate monitoring is performed during the
helical acquisition and the associated EKG gating information is stored with the scan data such
that a cardiac gated SnapShot reconstruction algorithm can be applied for prospective and
retrospective images. SnapShot reconstruction is used to minimize the motion of the heart in the
resultant images. The pitch factor for the cardiac helical scan is determined by the system and is a
function of the patient heart rate.

Cardiac Helical imaging features include:

  • Scan Speeds: 0.35*, 0.375*, 0.4, 0.425, 0.45, 0.475, and 0.5 seconds.
  • * only available if the sub 0.4 second option is installed.
  • All kV and mA stations available, dependent on generator and tube limitations.
  • 60 second maximum cardiac helical scan time.
  • Pitches: determined by system, ranging from .16 – .325, based on patient heart rate. A higher heart rate will use a higher pitch factor.
  • Variable image thickness of:
  • 0.625, 1.25 and 2.5 mm for 40 mm detector coverage for 64 slice configuration.
  • 0.625, 1.25 and 2.50 mm for 20 mm detector coverage.
  • SnapShot Segment, Segment Plus, Burst, Burst Plus, and Segmented (non-gated) reconstruction options.
  • Cardiac phase location parameter of 0 to 99% of R-to-R cycle.
  • 0.1mm minimum incremental retrospective recon image spacing.

Once the cardiac helical data has been collected, it can be reconstructed at one or more arbitrary
heart cycle phase locations. Segmented reconstruction is also available retrospectively if nongated images are desired.
Cardiac Cine acquisition for cardiac imaging is available in conjunction with SnapShot Pulse and
prospective cardiac gating. In this step and shot cine scanning mode, the heart rate is monitored
during the scan and the R-peak triggers the acquisition of data for that location. The table moves
to the next location and waits for the next R-peak to trigger acquisition of data for the phase
specified. SnapShot Pulse is a lower dose mode compared to cardiac helical modes. A padding
value allows for flexibility of neighboring phase locations to accommodate small fluctuations in
heart rate (a few BPM or less). However, a stable heart rate of 65BPM or less is recommended for
SnapShot Pulse.

Cardiac Cine imaging features include:

  • Scan speeds 0.35* seconds.
  • * only available if the sub 0.4 second option is installed.
  • All kV and mA stations available, dependent on generator and tube limitations.
  • Image thickness of 0.625 mm.
  • Retrospective gated cardiac volumes are limited to common phases across all cine locations in the acquisition.
  • 0.1mm minimum incremental retrospective recon image spacing.


 GE CT VCT 64 Parts in Stock


5113617 Top Cover Side Brkt 11 positioning GT GE CT
2252889 DAS Duct Center Filter GE CT
2250656 SAF H1 HSDCD Antenna GE CT
2225209 Right Side Power Supply Assembly GE CT
2335326 Harness, DC Power (H16) GE CT
2217993 Belt 4400MM 30MM GE CT
2142415-7 LP-CC-15 Fuse GE CT
5255299-31 VRB2 – VERB – VOLUME RECO GE CT
5133506 Right Top Side Cover 1700 Assembly, Positioning GT GE CT
2214606-22 Programmed KV Control Board GE CT
5325728 Kittyhawk XA Detector GE CT
5112551 Gantry Bearing Assembly GE CT
2233745 DRF2 Assembly GE CT
2317526 Display Board Panel GE CT
2351200-3 KV Board GE CT
5134582 PET Scan Window Kit GE CT
5124921 Cable DAS Routing Cable GE CT
5130814 Front Left Side Panel Assembly, VCT Table GE CT
2347434-H H-Power Table Cable Harness GE CT
2218158 DAS 5VDC Analog Power Supply with Bracket GE CT
MX200-F MX200 Fan Assembly GE CT
5330953-5 HP 8600 Power Supply GE CT
46-229455P1 CT Table Power Supply Tube Axial Fan Axial GE CT
5308760 250GB Seagate Constilation ES SADA Family Hard Drive GE CT
5310002-3 CT Gantry Display for HDCT, White GE CT
01-W1904B02B MVME 147SA-2 GE CT
2367470-5 Fans Speed Control Sub-Assembly GE CT
2247015 P2014NA Collimator Assembly GE CT
5233047 Halo Detector Module VCT 64 GE CT
2143979 CSB Assembly GE CT
2300482 Pegasus Nancy TLA Assembly GE CT
2245261 SDAS DIP GE CT
2300169-2 Octane II Host Computer (Dual Processor) GE CT
5109480 P9363BQ Display Assy GE CT
2107544-2 HP DAS Digital Controller GE CT
5125111 Limit Switch GE CT
5131624 High Resolution BGO Detector Module – 6×8 Block GE CT
E2210882 Motherboard- Intel GE CT
2394871-2 16 Channel Cable GE CT
5272157 Cherokee 48V Power Supply GE CT
5162691 CFC J4T to Temperature Sensor GE CT
2320572-2 New SBC Raptor Module GE CT
2371593 positioning assembly DST GE CT
46-325279P2 1.4M LG Fiber Optic Cable, GE Discovery LS Pet/CT GE CT
5174254 Fan Tubaxial GE CT
5219979 Cradle Cover Assembly with Logo Label Positioning GT GE CT
5271284 VCT 64 Collimator Motor GE CT
2137130-16 GE Performix 40 Plus Tube GE CT
5335009 Detector Power Supply GE CT
5113612 TOP FRONT BRKT 3 positioning GT GE CT
Tube Cable Set GE CT
2349543-2 MTCB GE CT
CT-GCVC-01 VCT 2000 Series Table Slicker Cushion / Pad GE CT
46-329097P2 Battery Assembly GE CT
46-325278P3 PET Fiber optic cable GE CT
2238776 Jedi NP V3 Generator GE CT
2382791-4 PPC KV Control Board GE CT
46-271511P1 71 (Trim AR); Swaged Ball One End GE CT
5105346-3 Performix Pro 100 Smart Pump – VCT HD – RoHS GE CT
2214606-19 KV Control Board GE CT
2342733 H-Power, AC Elevation Motor GE CT
2136996-2 P9231ZR Front Panel Assembly GE CT
7750396 K2 Power Contact GE CT
5335963 FDIP PWA GE CT
2344195 4 Port Terminal Server PET/CT GE CT
5129366 48VDC Power With Special Jack Cable GE CT
2204424 P9231VS PCI Tray GE CT
5330953-8 NVIDIA FX480C PCI-E GE CT
2162595 Diode Laser GE CT
2293396 Fuse Box/Switch Box Assembly GE CT
46-317220P14 (731) MG3-A36-J14 / MG2-A16-OUT-J4 GE CT
2373436 Cardiac Lan Cable GE CT
2354761 Cardiac/Pulmonary Cable GE CT
2169940-81 CT Octane 2 73GB Hard Drive GE CT
5372507 Power Supply Assembly GE CT
5233004 CCB Assembly GE CT
5324605-EN Black Keyboard GE CT
2167014 Rhapsode Intercom GE CT
5222001-2 VCTHD WSO SRM Collimator SIL GE CT
8871910 IRS MX2 GE CT
5430000-5 GEM Flex Interface 16 Channel Fixed 1.5T P-Connector GE CT
2217038 OBC backplane GE CT
5142244 IMS Rear Cover GE CT
5130811-3 Pet IG Computer GE CT
5166832 Backplane to Backplane VCT Cable GE CT
5101529 Door Interface Board 4L GE CT
46-195120G21 H1 HV Cables GE CT
5310001-3 Left Control Panel GE CT
2241327 P9234SZ Motor Driver For Z-Axis GE CT
P40RB P40 Roller Bearing Tube GE CT
2324118-3 VCT-JH4 Auxiliary Equipped GE CT
VCT Table Right Cover Set GE CT


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