Development And Evaluation Of A Cmos Sensorbased Digital Intraoral Radiographic System

• doi: 10.1109/TNS.2004.843167
• title: Development and evaluation of a CMOS sensor-based digital intra-oral radiographic system
• publisher: IEEE
• isbn:
• issn: 1558-1578
• rank: 2222
• access_type: LOCKED
• content_type: Journals
• abstract: As part of an ongoing investigation into the development of a dental digital radiographic (DDR) system using a complementary metal-oxide semiconductor (CMOS) sensor, this study developed hardware and software with a graphical user interface to acquire and display intra-oral images from a prototype DDR system. The aim of this study was to develop a DDR system using a CMOS sensor and evaluate its characteristics. Electrical signals that were generated by the CMOS sensor were transformed into digital images by a control computer equipped using a USB board. The distance between the X-ray tube and the CMOS sensor was adjusted within the range of 10-40 cm to provide the optimal image quality. In order to evaluate the image quality according to variations in the dose, phantom images (60 kVp, 7 mA) were obtained at exposure times of 0.03, 0.05, 0.08, 0.10, and 0.12 s, and the signal-to-noise ratio (SNR) was calculated from the phantom image data. The modulation transfer function (MTF) was obtained from a Fourier transform of the line spread function, which was itself derived from the edge spread function of a sharp edge image acquired using the exposure conditions of 60 kVp, 7 mA, and 0.08 s exposure time. The best contrast and focus were obtained at 20 cm. The SNR level was found to increase with increasing exposure time ranging from 0.03 to 0.08 s. The results obtained at 10% of the MTF showed that the resolution of the DDR system was approximately 6.2 line pairs per millimeter. The characteristics of the prototype DDR system have potential applications in intra-oral dental radiographic imaging. The fully developed DDR system can be used for making a clinical diagnosis with further improvements in the acquisition time and spatial resolution.
• article_number: 1417138
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1417138
• html_url: https://ieeexplore.ieee.org/document/1417138/
• abstract_url: https://ieeexplore.ieee.org/document/1417138/
• publication_title: IEEE Transactions on Nuclear Science
• conference_location:
• conference_dates:
• publication_number: 23
• is_number: 30667
• publication_year: 2005
• publication_date: Feb. 2005
• start_page: 256
• end_page: 261
• citing_paper_count: 3
• citing_patent_count: 6
• download_count: 287
• insert_date: 20050411
• index_terms:
  • ieee_terms:
    • Radiography
    • CMOS image sensors
    • Sensor phenomena and characterization
    • Dentistry
    • Sensor systems
    • Image quality
    • Imaging phantoms
    • Spatial resolution
    • MOS devices
    • Hardware
  • author_terms:
    • CMOS sensor
    • dental digital radiographic (DDR) system
    • modulation transfer function (MTF)
  • dynamic_index_terms:
    • Evaluation System
    • Rating System
    • Digital Radiography
    • Digital X-ray
    • Portable X-ray
    • Radiography System
    • Intraoral Radiographs
    • Digital Radiographic System
    • Spatial Resolution
    • Exposure Time
    • Imaging Data
    • Image Quality
    • Digital Images
    • Electrical Signals
    • Variable Doses
    • Resolution Of System
    • Modulation Transfer Function
    • Optical Transfer Function
    • Phantom Images
    • Signal-to-noise Ratio Levels
    • Signal-to-noise Levels
    • Optimal Image Quality
    • Dental Imaging
    • Image Acquisition
    • Software Interface
    • User Interface Software
    • Image Storage
    • Analog-to-digital Converter
    • Analog-to-digital
    • Digital-to-analog Converter
    • Real-time Acquisition
    • C++ Language
    • Sensor Pixel
    • Fast Fourier Transform
    • Inverse Fast Fourier Transform
    • Hardware System
    • Visual Quality
    • Dynamic Range
• authors:
  • Author Name: Soonil Hong
    Affiliation: BK21 Project for Medical Sciences Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087217462
    ID: 37087217462
    Order: 1
    Author Affiliations:
    • BK21 Project for Medical Sciences Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, South Korea
  • Author Name: Haijo Jung
    Affiliation: Research Institute of Radiological Science, Department of Radiology, Yonsei University College of Medicine, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087216790
    ID: 37087216790
    Order: 2
    Author Affiliations:
    • Research Institute of Radiological Science, Department of Radiology, Yonsei University College of Medicine, Seoul, South Korea
  • Author Name: Kee-Deog Kim
    Affiliation: Department of Oral and Maxillofacial Radiology, Yonsei University College of Dentistry, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087809771
    ID: 37087809771
    Order: 3
    Author Affiliations:
    • Department of Oral and Maxillofacial Radiology, Yonsei University College of Dentistry, Seoul, South Korea
  • Author Name: Su-Gil So
    Affiliation: Institute of Radiation Technology, Seyong NDC Limited, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087810076
    ID: 37087810076
    Order: 4
    Author Affiliations:
    • Institute of Radiation Technology, Seyong NDC Limited, Seoul, South Korea
  • Author Name: Jong-Ho Kim
    Affiliation: Institute of Radiation Technology, Seyong NDC Limited, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087295981
    ID: 37087295981
    Order: 5
    Author Affiliations:
    • Institute of Radiation Technology, Seyong NDC Limited, Seoul, South Korea
  • Author Name: Sun Kook Yoo
    Affiliation: Department of Medical Engineering, Center for Emergency Medical Informatics, Yonsei University College of Medicine, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087808107
    ID: 37087808107
    Order: 6
    Author Affiliations:
    • Department of Medical Engineering, Center for Emergency Medical Informatics, Yonsei University College of Medicine, Seoul, South Korea
  • Author Name: Hyung Sik Yoo
    Affiliation: Research Institute of Radiological Science, Department of Radiology, Yonsei University College of Medicine, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087214623
    ID: 37087214623
    Order: 7
    Author Affiliations:
    • Research Institute of Radiological Science, Department of Radiology, Yonsei University College of Medicine, Seoul, South Korea
  • Author Name: Hee-Joung Kim
    Affiliation: Medical Imaging and Informatics Laboratory, Department of Radiology, Yonsei University College of Medicine, Seoul, South Korea
    Author URL: https://ieeexplore.ieee.org/author/37087215421
    ID: 37087215421
    Order: 8
    Author Affiliations:
    • Medical Imaging and Informatics Laboratory, Department of Radiology, Yonsei University College of Medicine, Seoul, South Korea
    • Yonsei University Medical Center, Seoul, South Korea

Image Sensor

• sensor_type: CMOS
• resolution: 512 x 1024 pixels
• dynamic_range: 85 dB
• pixel_size: 45 µm
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• signal_to_noise_ratio: 25.26 dB at 0.08 s exposure time
• shutter_speed: 0.03, 0.05, 0.08, 0.10, 0.12 s

Applications & Benefits

• cell_imaging: Potential applications in intra-oral dental radiographic imaging.
• benefits: Lower dose, real-time acquisition, no chemical processing, image storage and retrieval.

Supporting Organizations

• supported_by: Korea Health 21 R&D Project, Ministry of Health & Welfare, Republic of Korea

Manuscript Details

• publication_date: Feb. 2005

Relevancy Score

• score: 10

Processed JSON Filename

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