Computed Tomography

LightSpeed™ VCT XTe*
Proven today. Prepared for tomorrow.

Today, thousands of LightSpeed VCT systems serve the clinical demands of healthcare providers around the world. Offering new levels of speed, power and coverage, it has earned the distinction as the industry’s system of choice. Moving forward, by adopting key Discovery™ HD technologies, the LightSpeed VCT XTe* furthers the ability to perform advanced clinical exams while producing routine exams with reliable speed and consistency. It will remain on the forefront of computed tomography.

*A premium LightSpeed VCT configuration

A fundamental shift in low-dose image quality

Lowering radiation dose used to mean sacrificing image quality — but not anymore. The LightSpeed VCT XTe offers a bold new paradigm, bringing clinicians high-quality images at a low dose.

Typically, dose reduction causes an increase in noise and image artifacts. But GE’s powerful Adaptive Statistical Iterative Reconstruction (ASiR) solves this by actually subtracting noise, not merely masking it. As a result, ASiR delivers enhanced image quality and improved low contrast detectability (LCD) while preserving anatomic detail.
Up to 40% less dose with no compromise in image quality.
Empowered by the new Xtream™ HD console, ASiR allows for low-dose scanning across all anatomies and patients with no loss of image quality. The result is better patient care with a dramatic reduction in dose made possible by GE.

Low-dose Imaging Case
Improved image quality enhances contrast between gray and white matter as well as the details of CTA
Low-dose Imaging Low-dose Imaging Low-dose Imaging Low-dose Imaging
120kVp; mA: 70–200 with AutomA
Rotation speed: 0.5sec		 120kVp; mA: 150–300 with AutomA;
Rotation speed: 0.5sec		 120kVp; mA: 100–198 with AutomA
Rotation speed: 0.4sec		 120kVp; mA: 130–337 with AutomA
Rotation speed: 0.4sec


Comparison Case
Same patient, same coverage. The pair of images on the left were acquired without ASiR. The pair of images on the right were acquired with ASiR in a follow-up exam. The overall dose of the follow-up exam is reduced by 40% with no image quality compromise.
Comparison Case Comparison Case Comparison Case Comparison Case
Prior study acquired on June 9, 2008.
kV: 120; mA: 300–600 with AutomA; DLP: 1025;
Effective dose: 15.37mSv Rotation speed: 0.5sec*		 Current study with ASiR acquired on April 20, 2009.
kV: 100; mA: 300–450 with AutomA; DLP: 615;
Effective dose: 9.22mSv Rotation speed: 0.5sec*


Protocols for all ages

In addition to ASiR’s power to lower dose, the LightSpeed VCT XTe offers procedure-based protocols. Particularly important in pediatric applications, these protocols help clinicians balance dose and image quality to optimize patient care.