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Home Healthcare MRI and CT FCT iStream Focus Edition FCT iStream Focus Edition：Low Dose & High Image Quality

   

FCT iStream Focus Edition   - Low Dose & High Image Quality

A 64ch , 128slice CT System that streamlines examination workflows.
With the evolution of our automated solutions developed using AI technology,
we have added a new feature that reduces motion blur caused by patient motion.

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The content on this page is intended to healthcare professionals and equivalents.

Low Dose and High Image Quality
Intelli IPV

Intelli IPV is an image reconstruction developed using AI technology*1. By using images obtained through sufficient iterative processing as training data, the processing speed is accelerated. Based on the Visual Model developed by Fujifilm, image reconstruction processing starting from raw data reduces NPS: Noise Power Spectrum to FBP: Filtered Back Projection, maintaining image quality even at high noise reduction rates. It reduces image noise by up to 90%*2,*3 and radiation exposure by up to 83% *4. It also improves low contrast detection performance by up to 2times *4.

Managing Low Dose and Visibility
Here are images of the abdominal region. One is the filtered back-projection (FBP) image, and the other is an Intelli IPV image. Intelli IPV reduces noise by up to 90% and radiation dose by up to 83% compared to FBP. Noise reduction was measured at the Intelli IPV intensity level Strong5 on a water phantom. Dose reduction was measured at 0.625 mm slice thickness on the MITA CT IQ phantom by Phantom Laboratory, also using Strong5.Effects may vary based on clinical task and other factors.
Improving Low-contrast Resolution
Here are comparative images of the head region. One is the filtered back-projection (FBP) image, and the other is an Intelli IPV image. Low contrast detectability, measured at 0.625 mm slice thickness and at the Intelli IPV intensity level Strong5 on the MITA CT IQ phantom by Phantom Laboratory using the model observer method, is improved by up to two times compared to FBP. Effects may vary based on clinical task and other factors.
Visual Model

Visual Model controls image noise and image quality through repeated calculations based on statistical models, object models, and physical models.

Here is a conceptual image of the visual model composed of three models: the statistical, object, and physical models. The statistical model models noise originating from X-ray detection and circuit noise and reduces it. The object model simulates shape changes by considering the structures’shape, size, and position to maintain their structure. The physical model uses FBP and reduces noise by evenly adjusting texture across frequencies, achieving a texture close to that of FBP.
Achieves a texture close to FBP

Intelli IPV has adjusted the texture across a ratio from high to low frequencies, bringing noise frequency characteristics that affect visibility as close as possible to FBP.

Here is a graph showing the normalized noise power spectrum from low to high frequencies. It displays the waveforms for FBP, conventional iterative reconstruction, and Intelli IPV. The Intelli IPV waveform is nearly identical to the conventional FBP waveform.
IntelliODM

During head imaging, the X-ray irradiation from above the patient is reduced up to 30% by controlling the tube current. It reduces the exposure of radiation-sensitive areas such as the eye lens. This results in minimal changes of the image quality and allows the control range to be changed as needed.

Here is a graph showing rotation angle on the horizontal axis and tube current on the vertical axis, comparing tube current with and without the IntelliODM function.
Here are comparative images illustrating the difference in X-ray exposure between cases without and with the IntelliODM function.
HiMAR Plus

HiMAR Plus reduces metal artifacts using sequential approximation processing. It extracts metal parts,estimates artifacts, and then corrects them. The strength of the effect can be selected, allowing you to use it according to your purpose. HiMAR Plus can be used in combination with Intelli IPV.

Here are comparative images of the thigh region. They show the differences between cases without and with the HiMAR Plus function.
1. Highly Efficient X-ray Generation System

High-efficiency generator and 6MHU X-ray tube unit enable high output of 60 kW (Up to 670 mA). Also supports flexible scan conditions during low tube voltage scanning.

2. Full Digital HV Detector

The optical system has been redesigned, and the detector has been upgraded. The detector employs MaxiLight technology.
By eliminating the need for analog wiring between bases, electrical noise is reduced, contributing to higher image quality.

Highly efficient X-ray generation system & Full Digital HV Detector system
MaxiLight technology
  • Sample clinical images from SCENARIA View CT System
  • IPV stands for Iterative Progressive reconstruction with Visual modeling.
  • *1 Intelli IPV was developed using Machine Learning, an AI technology. The performance and accuracy of the system do not automatically change after implementation.
  • *2 It is obtained in the abdominal region.
  • *3 Compared to FBP. It was measured using Intelli IPV intensity level Strong5 and tested to a water phantom. Depend on the clinical task, patient size, anatomic location, and clinical examination, the effect obtained may be smaller.
  • *4 Compared to FBP. It was measured at 0.625 mm slice thickness using Intelli IPV intensity level Strong5 and tested to MITA CT IQ phantom: CCT189 which is made by Phantom Laboratory, using the model observer method results. Depending on the clinical task, patient size, anatomic location, and clinical examination, the effect obtained may be smaller.
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