尊龙凯时 - 人生就是搏!

       
           

Redefine CT Imaging with AIIR* Technology

           

The Artificial-Intelligence Iterative Reconstruction (AIIR) Technology utilizes deep learning-based AI technology to attain robust noise reduction and natural image texture, while incorporating MBIR (Model-Based Iterative Reconstruction) technology to achieve precise anatomical structure representation and artifact suppression. This technique surpasses the limitations of using either MBIR or DLR (Deep Learning Reconstruction) exclusively.

       
   
*Optional

Technical Principle


The image reconstruction algorithm is crucial for CT imaging quality and diagnostic reliability. AIIR Technology integrates the benefits of cutting-edge deep learning technology with the power of MBIR to deliver extraordinary CT images for confident diagnosis.

Advances in CT reconstruction moved from filtered back projection to iterative and deep learning methods. However, each still has its strengths and limitations.

Considering the statistical noise characteristics of the data and the system acquisition models, MBIR effectively reduces noise, enhances spatial resolution and low-contrast detectability (LCD), and suppresses streak and cone-beam artifacts.
However, the application of a regularization term for noise reduction can result in an unnatural noise pattern, and the image texture differs significantly from that from FBP(Filterd Back Projection). Additionally, the reconstruction process is notably time-consuming due to the complexity of the computations involved.

DLR algorithms have demonstrated the potential to rapidly reconstruct images with low noise, desired noise patterns, and preserved spatial resolution, thereby offering the opportunity to reduce radiation dose.
However, deep learning networks are highly complex and use models that are not always fully interpretable, which could introduce incorrect anatomic or pathologic features, particularly in low-dose settings[1].

[1] Deep Learning Image Reconstruction for CT: Technical Principles and Clinical Prospects. Radiology. 2023 Mar;306(3):e221257.

AIIR Technology harnesses the benefits of both MBIR and DLR to overcome their respective challenges.
AIIR maintains factors for modeling optics, noise, anatomy, and physics statistics to accurately retain anatomic and pathologic features. It also incorporates deep learning based de-noising technology to replace the role of traditional regularization of MBIR to optimize reconstruction process and image texture.

The evolution of CT image reconstruction

Advances in CT reconstruction moved from filtered back projection to iterative and deep learning methods. However, each still has its strengths and limitations.

The strengths and limitations of MBIR

Considering the statistical noise characteristics of the data and the system acquisition models, MBIR effectively reduces noise, enhances spatial resolution and low-contrast detectability (LCD), and suppresses streak and cone-beam artifacts.
However, the application of a regularization term for noise reduction can result in an unnatural noise pattern, and the image texture differs significantly from that from FBP(Filterd Back Projection). Additionally, the reconstruction process is notably time-consuming due to the complexity of the computations involved.

The strengths and limitations of DLR

DLR algorithms have demonstrated the potential to rapidly reconstruct images with low noise, desired noise patterns, and preserved spatial resolution, thereby offering the opportunity to reduce radiation dose.
However, deep learning networks are highly complex and use models that are not always fully interpretable, which could introduce incorrect anatomic or pathologic features, particularly in low-dose settings[1].

[1] Deep Learning Image Reconstruction for CT: Technical Principles and Clinical Prospects. Radiology. 2023 Mar;306(3):e221257.

AIIR Technology: a breakthrough in CT reconstruction

AIIR Technology harnesses the benefits of both MBIR and DLR to overcome their respective challenges.
AIIR maintains factors for modeling optics, noise, anatomy, and physics statistics to accurately retain anatomic and pathologic features. It also incorporates deep learning based de-noising technology to replace the role of traditional regularization of MBIR to optimize reconstruction process and image texture.

Clinical Benefits

AIIR can reduce image noise, suppress streak artifacts, increase spatial resolution and improve low contrast detectability. AIIR allows for the reduction of radiation dose required for a diagnostic CT image while maintaining image quality.

Unparalleled Image Quality

Improved Image Resolution

AIIR contributes high-resolution images for highly confident diagnosis.

Reduced Radiation Dose

AIIR assists to lower radiation dose for Patient-centered care following ALARA principle.

Consistent Image Quality

AIIR aids to deliver consistent and reliable image quality even in challenging scenarios.

*AIIR images compared with FBP based on phantom tests. Data on file.

Clinical Evidence

Owing to its innovative design, AIIR Technology delivers high-quality images for routine clinical applications as well as challenging scenarios.

Improved Image Resolution

The AIIR image shows significantly reduced image noise with a 69% dose reduction[2].
Enhances low-contrast detectability for clearer visualization of the liver lesions and the cyst in the right kidney.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 217
    CTDIvol: 4.65 mGy
    Eff. Dose: 2.94 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
    WW/WL: 300/40
  • Contrast
  • 350 mg/ml
    65 ml
    2.5 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Improved Image Resolution

The AIIR image shows significantly reduced image noise with a 66% dose reduction[2].
Enhances low-contrast detectability for a more distinct visualization of the irregular enhancement within the pancreatic head lesion, as well as a sharper depiction of the dilated pancreatic ducts.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 100；mAs: 118
    CTDIvol: 5.41 mGy
    Eff. Dose: 2.71 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
    WW/WL：300/40
  • Contrast
  • 350 mg/ml
    65 ml
    2.5 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Improved Image Resolution

AIIR could significantly reduce the image noise and have huge improvements in spatial resolution.
In Hybrid IR image, it is blurring between the lesion and the serosa, which could possibly lead to further examination or even invasive surgeries.
By using AIIR, there is clearly a fat space between the lesion and the serosa. Based on this fact, physician concluded that there is no obvious thickening or invasion of the rectal wall.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 120；mAs: 119
    CTDIvol: 10.6 mGy
    Eff. Dose: 3.09 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • -
Improved Image Resolution

AIIR technology enhances low-contrast detectability and spatial resolution while reducing image noise, thereby revealing more details of small structures.
The lenticulostriate artery is more clearly visualized in the AIIR image, offering a higher level of detail than the HIR image.

  • Head CTA
  • 320×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 384
    CTDIvol: 7.01 mGy
    Eff. Dose: 0.53 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x0.5 mm
    HIR: H_SOFT_B/KARL 5
    AIIR: HeadStandard/AIIR 3
  • Contrast
  • 50 mL
    5.5 mL/s
Improved Image Resolution

Enhances spatial resolution and improves low-contrast detectability for clearer visualization of small vessels.
The AIIR images provide more detailed information, thereby better meeting the needs of clinical diagnosis.

  • Lower Extremity
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 512
    CTDIvol: 11.01 mGy
    Eff. Dose: 10.50 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 5
  • Contrast
  • 350 mg/ml
    85 ml
    4.5 ml/s
Improved Image Resolution

The AIIR image shows significantly reduced image noise with a 69% dose reduction[2].
Enhances low-contrast detectability for clearer visualization of the liver lesions and the cyst in the right kidney.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 217
    CTDIvol: 4.65 mGy
    Eff. Dose: 2.94 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
    WW/WL: 300/40
  • Contrast
  • 350 mg/ml
    65 ml
    2.5 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Improved Image Resolution

The AIIR image shows significantly reduced image noise with a 66% dose reduction[2].
Enhances low-contrast detectability for a more distinct visualization of the irregular enhancement within the pancreatic head lesion, as well as a sharper depiction of the dilated pancreatic ducts.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 100；mAs: 118
    CTDIvol: 5.41 mGy
    Eff. Dose: 2.71 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
    WW/WL：300/40
  • Contrast
  • 350 mg/ml
    65 ml
    2.5 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Improved Image Resolution

AIIR could significantly reduce the image noise and have huge improvements in spatial resolution.
In Hybrid IR image, it is blurring between the lesion and the serosa, which could possibly lead to further examination or even invasive surgeries.
By using AIIR, there is clearly a fat space between the lesion and the serosa. Based on this fact, physician concluded that there is no obvious thickening or invasion of the rectal wall.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 120；mAs: 119
    CTDIvol: 10.6 mGy
    Eff. Dose: 3.09 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • -
Improved Image Resolution

AIIR technology enhances low-contrast detectability and spatial resolution while reducing image noise, thereby revealing more details of small structures.
The lenticulostriate artery is more clearly visualized in the AIIR image, offering a higher level of detail than the HIR image.

  • Head CTA
  • 320×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 384
    CTDIvol: 7.01 mGy
    Eff. Dose: 0.53 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x0.5 mm
    HIR: H_SOFT_B/KARL 5
    AIIR: HeadStandard/AIIR 3
  • Contrast
  • 50 mL
    5.5 mL/s
Improved Image Resolution

Enhances spatial resolution and improves low-contrast detectability for clearer visualization of small vessels.
The AIIR images provide more detailed information, thereby better meeting the needs of clinical diagnosis.

  • Lower Extremity
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 512
    CTDIvol: 11.01 mGy
    Eff. Dose: 10.50 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 5
  • Contrast
  • 350 mg/ml
    85 ml
    4.5 ml/s
Reduced Radiation Dose

When compared to HIR images, the advantages of AIIR images are evident:
A marked reduction in image noise enhances the clarity of lung details. By eliminating noise, the visibility of interlobar fissures is greatly improved, simplifying the identification of different lung segments.
With the implementation of 60 kV ultra-low-dose imaging, the examination dose is effectively minimized.

  • Chest Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 60；mAs: 67
    CTDIvol: 0.35 mGy
    Eff. Dose: 0.22 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SHARP_C, KARL 8
    AIIR: LungStandard/AIIR 5
  • Contrast
  • -
Reduced Radiation Dose

AIIR images significantly reduce radiation dose while also reducing image noise, suppressing streak artifacts, and enhancing spatial resolution, thus accurately reproducing the true nature of the images.
Under low-dose conditions, the vacuole sign of ground-glass nodules cannot be accurately defined on hybrid iterative images, but it is clearly visible on AIIR images.

  • Chest Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 26
    CTDIvol: 0.55 mGy
    Eff. Dose: 0.21 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SHARP_C, KARL 8
    AIIR: LungStandard/AIIR 3
  • Contrast
  • -
Reduced Radiation Dose

Radiation dose was reduced nearly 70%[2].
The level of noise in AIIR images has been notably diminished, with an improved contrast in the low-density areas of the abdomen.
The gastric wall thickening is distinctly visible and well-defined; the mucosal and serosal layers of the gastric wall are distinctly layered with sharp contrast.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 100；mAs: 128
    CTDIvol: 5.89 mGy
    Eff. Dose: 4.08 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • 350 mg/ml
    60 ml
    5.0 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Reduced Radiation Dose

Radiation dose was reduced nearly 90%[2] by 70 kV imaging.
More small vessels can be displayed in VR mode using AIIR reconstruction compared to HIR reconstruction.

  • CorAxial CTA
  • 320×0.5 mm
    0.25 sec/rotation
    kV: 70；mAs: 177
    CTDIvol: 4.19 mGy
    Eff. Dose: 0.82 mSv
  • Aorta CTA
  • kV: 70；mAs: 147
    CTDIvol: 1.56 mGy
    Eff. Dose: 1.62 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 0.5x 0.5 mm
    HIR: C_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • 350 mg/ml
    60 ml
    5.0 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Reduced Radiation Dose

When compared to HIR images, the advantages of AIIR images are evident:
A marked reduction in image noise enhances the clarity of lung details. By eliminating noise, the visibility of interlobar fissures is greatly improved, simplifying the identification of different lung segments.
With the implementation of 60 kV ultra-low-dose imaging, the examination dose is effectively minimized.

  • Chest Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 60；mAs: 67
    CTDIvol: 0.35 mGy
    Eff. Dose: 0.22 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SHARP_C, KARL 8
    AIIR: LungStandard/AIIR 5
  • Contrast
  • -
Reduced Radiation Dose

AIIR images significantly reduce radiation dose while also reducing image noise, suppressing streak artifacts, and enhancing spatial resolution, thus accurately reproducing the true nature of the images.
Under low-dose conditions, the vacuole sign of ground-glass nodules cannot be accurately defined on hybrid iterative images, but it is clearly visible on AIIR images.

  • Chest Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 26
    CTDIvol: 0.55 mGy
    Eff. Dose: 0.21 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 1.0 mm
    HIR: B_SHARP_C, KARL 8
    AIIR: LungStandard/AIIR 3
  • Contrast
  • -
Reduced Radiation Dose

Radiation dose was reduced nearly 70%[2].
The level of noise in AIIR images has been notably diminished, with an improved contrast in the low-density areas of the abdomen.
The gastric wall thickening is distinctly visible and well-defined; the mucosal and serosal layers of the gastric wall are distinctly layered with sharp contrast.

  • Abdomen CE
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 100；mAs: 128
    CTDIvol: 5.89 mGy
    Eff. Dose: 4.08 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • 350 mg/ml
    60 ml
    5.0 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Reduced Radiation Dose

Radiation dose was reduced nearly 90%[2] by 70 kV imaging.
More small vessels can be displayed in VR mode using AIIR reconstruction compared to HIR reconstruction.

  • CorAxial CTA
  • 320×0.5 mm
    0.25 sec/rotation
    kV: 70；mAs: 177
    CTDIvol: 4.19 mGy
    Eff. Dose: 0.82 mSv
  • Aorta CTA
  • kV: 70；mAs: 147
    CTDIvol: 1.56 mGy
    Eff. Dose: 1.62 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 0.5x 0.5 mm
    HIR: C_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • 350 mg/ml
    60 ml
    5.0 ml/s

[2] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Consistent Image Quality

The AIIR image exhibits significantly reduced image noise with a 32.5% dose reduction[2].
Compared with HIR, AIIR technology enhances the differentiation between grey and white matter, offering detailed visualization of the cerebellar sulci's fine structures. It also effectively suppresses streak artifacts in the skull base region.

  • Head Vol-Axial
  • 320×0.5 mm
    1.0 sec/rotation
    kV: 120；mAs: 277
    CTDIvol: 38.45 mGy
    Eff. Dose: 1.13 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: H_SOFT_B/KARL 5
    AIIR: HeadStandard/AIIR 3
  • Contrast
  • -

* Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Consistent Image Quality

Comprehensive one-stop imaging from head to abdomen: Effective Dose 2.9 mSv only.
AIIR's strengths in lowering dose, reducing noise, increasing density resolution, and removing striping artifacts are evident, making minor liver abnormalities clearly discernible and reducing the risk of missed diagnoses.

  • Abdomen Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 112
    CTDIvol: 2.01 mGy
    Eff. Dose: 1.45 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 0.5 x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 5
    WW/WL：300/40
  • Contrast
  • 350 mg/ml
    65 ml
    3.5 ml/s

* Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Consistent Image Quality

In challenging scenarios with less-than-ideal examination conditions, AIIR technology overcomes difficulties and outputs stable and reliable high-quality images.
It effectively overcomes streak artifacts caused by radiation starvation and beam hardening, allowing for clear detection of a small cyst in the left kidney.
During follow-up examinations with the patient's hands raised at normal dosages, it was confirmed that the left kidney did indeed have a small cyst.

  • Abdomen Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 100；mAs: 55
    CTDIvol: 2.52 mGy
    Eff. Dose: 1.97 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • -
Consistent Image Quality

Image noise is significantly reduced for this obese patient in the AIIR image.
Image quality, specifically LCD, is improved in the AIIR image.
AIIR image removes streak artifacts and reveals natural image texture.

  • Patient
  • Female，BMI 40 kg/㎡
  • Abdomen Helical Low Dose
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 120；mAs: 150
    CTDIvol: 11.69 mGy
    Eff. Dose: 6.77 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 0.5x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • -
Consistent Image Quality

The AIIR image exhibits significantly reduced image noise with a 32.5% dose reduction[2].
Compared with HIR, AIIR technology enhances the differentiation between grey and white matter, offering detailed visualization of the cerebellar sulci's fine structures. It also effectively suppresses streak artifacts in the skull base region.

  • Head Vol-Axial
  • 320×0.5 mm
    1.0 sec/rotation
    kV: 120；mAs: 277
    CTDIvol: 38.45 mGy
    Eff. Dose: 1.13 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: H_SOFT_B/KARL 5
    AIIR: HeadStandard/AIIR 3
  • Contrast
  • -

* Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Consistent Image Quality

Comprehensive one-stop imaging from head to abdomen: Effective Dose 2.9 mSv only.
AIIR's strengths in lowering dose, reducing noise, increasing density resolution, and removing striping artifacts are evident, making minor liver abnormalities clearly discernible and reducing the risk of missed diagnoses.

  • Abdomen Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 80；mAs: 112
    CTDIvol: 2.01 mGy
    Eff. Dose: 1.45 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 0.5 x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 5
    WW/WL：300/40
  • Contrast
  • 350 mg/ml
    65 ml
    3.5 ml/s

* Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations.

Consistent Image Quality

In challenging scenarios with less-than-ideal examination conditions, AIIR technology overcomes difficulties and outputs stable and reliable high-quality images.
It effectively overcomes streak artifacts caused by radiation starvation and beam hardening, allowing for clear detection of a small cyst in the left kidney.
During follow-up examinations with the patient's hands raised at normal dosages, it was confirmed that the left kidney did indeed have a small cyst.

  • Abdomen Helical
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 100；mAs: 55
    CTDIvol: 2.52 mGy
    Eff. Dose: 1.97 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 1.0x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • -
Consistent Image Quality

Image noise is significantly reduced for this obese patient in the AIIR image.
Image quality, specifically LCD, is improved in the AIIR image.
AIIR image removes streak artifacts and reveals natural image texture.

  • Patient
  • Female，BMI 40 kg/㎡
  • Abdomen Helical Low Dose
  • 80×0.5 mm
    0.5 sec/rotation
    kV: 120；mAs: 150
    CTDIvol: 11.69 mGy
    Eff. Dose: 6.77 mSv
  • Reconstruction
  • Matrix: 512x512
    Slice: 0.5x 0.5 mm
    HIR: B_SOFT_B/KARL 5
    AIIR: BodyStandard/AIIR 3
  • Contrast
  • -

Scientific Reference

AIIR Technology breaks through the limitations of traditional FBP, HIR, and DLR algorithms, emerging as a cutting-edge CT image reconstruction technology. This advancement is poised to enhance clinical diagnostics and therapy, improve patient care, thus creating a fresh foundation and new opportunities for clinical and scientific research.

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Scientific Reference

More Information

AIIR Technology Technical Whitepaper

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