Low Dose

Leading the way in image reconstruction.

Incremental reductions in dose can go a long way toward supporting improved care, but the highest standard can only be achieved through breakthrough innovation in image reconstruction.

Discovery CT750 HD FREEdom Edition- Low Dose

[A] Obtained by EUR 16262EN, using an abdomen factor of 0.015* DLP and a pelvis factor of 0.019* DLP.
[B] Obtained by EUR-16262 EN, using an adult chest factor of 0.017*DLP.
[C] Obtained by EUR-16262 EN, using an head factor of 0.023*DLP.

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ASiR

Typically, lowering dose has increased noise and image artifacts, creating a difficult balancing between higher image quality and lower dose. In order to overcome this obstacle, GE developed an industry exclusive approach to image reconstruction - Adaptive Statistical Iterative Reconstruction (ASiR*). The Discovery CT750 HD can reach any part of the body, any age patient, and any application that demands the leading edge of CT clarity.



Innovation

GE Healthcare develops products based on the idea that both dose and image quality are important factors in providing quality medical care. To assist you in optimizing each CT exam for your patients, GE Healthcare has innovated over the years, with Optidose technology and iterative reconstruction techniques, to provide solutions to help you manage dose.

1980's
Bowtie filters
To optimize imaging of the head and body in pediatric, small, medium, and large patients.

1998
SmartTrack
Advanced hardware and software for x-ray beam tracking minimizes patient dose.

Prospective Dose Display
CTDIvol, DLP (Dose Length Product), and Dose Efficiency display during scan prescription provide patient dose information to the operator.

2002
Color Coding for Kids
This Color Coding system is incorporated into the protocol selection on the operator’s console and is designed to facilitate pediatric emergency care and reduce medical errors.

3D Dose Modulation
During the scan, real-time, 3D dose modulation helps deliver consistent image quality because it automatically accounts for the changing dimensions of your patient's anatomy.

Adaptive Image Filtration
Provides users the capability to reconstruct filtered images using different steps of noise (pixel standard deviation) reduction, this lower noise may allow a reduction of mA while maintaining an acceptable level of image noise.

2003
ECG Dose Modulation
For cardiac applications, prospective ECG dose modulation automatically adjusts the mA to minimize the patient’s exposure to x-rays – reducing dose during systolic phases of the cardiac cycle.

2005
Volara* HD Digital Data Acquisition System (DAS)
Enables true high definition acquisitions with an 8-to-1 miniaturization delivering dramatic reduction in electronic noise for improved low signal imaging performance and fast sampling rates.

2007
SnapShot Pulse
Prospective axial ECG-gated cardiac acquisition protocol to complete the scan via step-and-shoot mode with a potential for less dose compared to low pitch helical technique (up to 83% less).

2008
VolumeShuttle*
Volume Shuttle doubles Z-coverage to 80mm (128 slice width) for neuro perfusion studies including angiographic information, which may enable lower dose (up to 24% less) compared to a 40mm Cine protocol due to x-ray being turned off during table moves.

ASiR*1
Adaptive Statistical Iterative Reconstruction, advanced reconstruction technique that may enable reduction in pixel noise standard deviation. ASiR may allow use of a lowered mA protocol thereby reducing the required dose. ASiR may enable an improvement in LCD.

2009
DICOM Structured Dose Report
Dose Reporting (DICOM) provides access to the CTDIvol and DLP with the patient record prior, during and post exam. 

2010
Dynamic Z-axis Tracking
Provides automatic and continuous correction of the x-ray beam position to block unused x-rays at the beginning and end of a helical scan to reduce unnecessary radiation.

2011
Veo*2
First Model-Based Iterative Reconstruction (MBIR) product. Our next revolution in reconstruction innovation that may provide significant Image Quality benefits, at lower radiation dose.

DoseWatch
The cornerstone of a proactive radiation management program.

1.In clinical practice, the use of ASiR may reduce CT patient dose or improve LCD depending on the clinical task, patient size, anatomical location and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task. ASiR dose reduction was measured on a standard 20cm water phantom. The test involved maintaining constant pixel standard deviation as the mA was reduced at 120 kVp.

2.In clinical practice, the use of Veo may reduce CT patient dose depending on the clinical task, patient size, anatomical location and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task.

Clinical Images

1 Obtained by EUR-16262 EN, using an head factor of 0.023*DLP

2 Obtained by EUR-16262 EN, using an abdomen factor of 0.015* DLP and a pelvis factor of 0.019* DLP.

Obtained by ICRP 5-year-old neck factor of 0.011 x DLP using a 16 cm phantom. ICRP Publication 102, March 2007.

Obtained by EUR-16262 EN, using an adult chest factor of 0.017*DLP.

Obtained by ICRP using a chest factor of 0.014DLP.


Related

Downloads

Comprehensive Dose Management

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Dose Working Together

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