Luximos A 76864 900Fps Tileable Pipelined Xray Cmos Image Sensor For Dental Imaging With 26 Lsbngy Sensitivity

• doi: 10.1109/LSSC.2020.3023333
• title: Luximos: A 768×64 900-fps Tileable Pipelined X-Ray CMOS Image Sensor for Dental Imaging With 2.6 LSB/nGy Sensitivity
• publisher: IEEE
• isbn:
• issn: 2573-9603
• rank: 2959
• access_type: LOCKED
• content_type: Journals
• abstract: In this letter, a stitched array of 768×64 pixels for X-ray dental imaging is presented. The sensor architecture allows to increase the frame rate up to 900 fps thanks to a pipeline approach that minimizes the deadtime between consecutive frames. A column-based ADC converts pixel values in digital form while an external FPGA performs the operation of time-delay integration accumulation, thus increasing the signal-to-noise ratio. Internal programmable gain allows to achieve a maximum sensitivity of 2.6 LSB/nGy and, at the same time, to extend the dynamic range of the sensor in case of high intensity. The final system consists of two sensors each one having a size of 74.5×9 mm, assembled in a PCB and coupled with a high sensitive columnar thallium-doped cesium iodide (CsI(Tl)) scintillator for X-ray conversion. The sensor, fabricated in a standard CMOS 0.15-μm technology with a stitching approach, shows a pixel size of 97 μm.
• article_number: 9194762
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9194762
• html_url: https://ieeexplore.ieee.org/document/9194762/
• abstract_url: https://ieeexplore.ieee.org/document/9194762/
• publication_title: IEEE Solid-State Circuits Letters
• conference_location:
• conference_dates:
• publication_number: 8011414
• is_number: 8952828
• publication_year: 2020
• publication_date: 2020
• start_page: 406
• end_page: 409
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 449
• insert_date: 20200911
• index_terms:
  • ieee_terms:
    • Detectors
    • X-ray imaging
    • Sensitivity
    • Signal to noise ratio
    • Imaging
    • Dentistry
    • Scintillators
  • author_terms:
    • CMOS sensors
    • image sensor
    • time-delay integration (TDI)
    • X-ray
  • dynamic_index_terms:
    • Dental Imaging
    • Signal-to-noise
    • Signal-to-noise Ratio
    • Signal To Noise
    • Signal To Noise Ratio
    • Dynamic Range
    • Frame Rate
    • Mm In Size
    • Μm In Size
    • Dead Time
    • Consecutive Frames
    • Scintillator
    • Standard CMOS
    • Cesium Iodide
    • Caesium Iodide
    • X-ray Source
    • High Dynamic Range
    • High-dynamic-range
    • High Frame Rate
    • Pixel Pitch
    • Readout Time
    • Maximum Frame Rate
    • Maximal Frame
    • Independent Outputs
• authors:
  • Author Name: Nicola Massari
    Affiliation: Fondazione Bruno Kessler, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37273438300
    ID: 37273438300
    Order: 1
    Author Affiliations:
    • Fondazione Bruno Kessler, Trento, Italy
  • Author Name: Hesong Xu
    Affiliation: Fondazione Bruno Kessler, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37085387270
    ID: 37085387270
    Order: 2
    Author Affiliations:
    • Fondazione Bruno Kessler, Trento, Italy
    • Austria Micro System, Zürich, Switzerland
  • Author Name: Alessandro Tarolli
    Affiliation: AdvanSid, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37847006400
    ID: 37847006400
    Order: 3
    Author Affiliations:
    • AdvanSid, Trento, Italy
  • Author Name: Luca Parmesan
    Affiliation: Fondazione Bruno Kessler, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37085347023
    ID: 37085347023
    Order: 4
    Author Affiliations:
    • Fondazione Bruno Kessler, Trento, Italy
  • Author Name: Daniele Perenzoni
    Affiliation: Fondazione Bruno Kessler, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37712348700
    ID: 37712348700
    Order: 5
    Author Affiliations:
    • Fondazione Bruno Kessler, Trento, Italy
    • Austria Micro System, Zürich, Switzerland
  • Author Name: Sabrina Colpo
    Affiliation: AdvanSid, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37568149600
    ID: 37568149600
    Order: 6
    Author Affiliations:
    • AdvanSid, Trento, Italy
  • Author Name: Nicola Fronza
    Affiliation: AdvanSid, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37088530557
    ID: 37088530557
    Order: 7
    Author Affiliations:
    • AdvanSid, Trento, Italy
  • Author Name: David Stoppa
    Affiliation: Fondazione Bruno Kessler, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37268553400
    ID: 37268553400
    Order: 8
    Author Affiliations:
    • Fondazione Bruno Kessler, Trento, Italy
    • Austria Micro System, Zürich, Switzerland
  • Author Name: Matteo Perenzoni
    Affiliation: Fondazione Bruno Kessler, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37301008100
    ID: 37301008100
    Order: 9
    Author Affiliations:
    • Fondazione Bruno Kessler, Trento, Italy
  • Author Name: Alfredo Maglione
    Affiliation: AdvanSid, Trento, Italy
    Author URL: https://ieeexplore.ieee.org/author/37088527489
    ID: 37088527489
    Order: 10
    Author Affiliations:
    • AdvanSid, Trento, Italy

Image Sensor

• sensor_type: CMOS
• resolution: 768 × 64
• dynamic_range: 61 dB (up to 69 dB in TDI mode)
• pixel_size: 97 µm
• dark_current: not specified

Optical Data

• focal_length: not specified
• aperture: not specified
• field_of_view: not specified
• distortion: not specified

Performance Metrics

• frame_rate: 900 fps (up to 450 fps in digital DDS mode)
• signal_to_noise_ratio: 52 dB (HD mode), 42 dB (HS mode)
• sensitivity: 2.6 LSB/nGy (maximum sensitivity of about 23 LSB/mR in HS mode)
• noise: less than 200 e- (input-referred noise at maximum gain)

Applications & Benefits

• cell_imaging: Applications in dental imaging and potentially other medical imaging applications.
• benefits: High frame rate, minimal dead time between frames, improved signal-to-noise ratio, and programmable gain settings.

Supporting Organizations

• supported_by: Fondazione Bruno Kessler, AdvanSid, Austria Micro Systems

Manuscript Details

• publication_date: 2020

Relevancy Score

• score: 10

Processed JSON Filename

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