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[Medical image transfer for emergency care utilizing internet and mobile phone].

Nihon Hoshasen Gijutsu Gakkai zasshi · 2002 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3851

CT images (converted from DICOM to JPEG) were transmitted to a PDA via the Internet and/or a CDMA mobile phone. Visual image-quality evaluation (BVC analysis) indicated that at least a 50% compression ratio was needed for diagnosis, and 50% was considered mos…

Study snapshot

PublicationNihon Hoshasen Gijutsu Gakkai zasshi · 2002
Study typeengineering
Reported directionUnclear
Evidence ratingInsufficient

Abstract

The purpose of this study was to utilize a mobile phone for transferring medical images to a specialist at a remote site in emergency care. CT images obtained in emergency treatment are transmitted via the Internet or mobile phone (CDMA: Code Division Multiple Access communication method). A specialist even at a remote mobile site may receive the appended images of e-mail sent via mobile phone to his PDA (Personal Digital Assistant, image indicator). The images are originally obtained in DICOM format by CT, and are then converted to JPEG format. To reduce transmission time, the JPEG files can be compressed without causing undue deterioration in image quality. To evaluate the quality of images received at the remote site, images were compressed at 25, 40, 50, 60, 70 and 80% compression ratios and transmitted to a PDA via the Internet and a mobile phone or a mobile phone alone. Image quality was visually evaluated by BVC analysis. The analysis revealed that the image compression ratio must be at least 50% for diagnosis. Considering the transmission speed, a 50% compression ratio was considered the most suitable for this application.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering
Effect directionunclear
PopulationNot supplied
Sample sizeNot supplied
ExposureNot supplied
Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

CT images (converted from DICOM to JPEG) were transmitted to a PDA via the Internet and/or a CDMA mobile phone. Visual image-quality evaluation (BVC analysis) indicated that at least a 50% compression ratio was needed for diagnosis, and 50% was considered most suitable when considering transmission speed.

Outcomes measured

  • Feasibility of transmitting CT images via Internet/mobile phone (CDMA) to a remote specialist
  • Received image quality on PDA after JPEG compression
  • Minimum acceptable compression ratio for diagnostic use
  • Transmission time/speed considerations

Limitations

  • No EMF exposure metrics reported (e.g., frequency, power, SAR)
  • No health outcomes assessed; study focuses on image transfer and quality
  • Sample size and details of image set/readers not reported in the abstract
View raw extracted JSON
{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Feasibility of transmitting CT images via Internet/mobile phone (CDMA) to a remote specialist",
    "Received image quality on PDA after JPEG compression",
    "Minimum acceptable compression ratio for diagnostic use",
    "Transmission time/speed considerations"
  ],
  "main_findings": "CT images (converted from DICOM to JPEG) were transmitted to a PDA via the Internet and/or a CDMA mobile phone. Visual image-quality evaluation (BVC analysis) indicated that at least a 50% compression ratio was needed for diagnosis, and 50% was considered most suitable when considering transmission speed.",
  "effect_direction": "unclear",
  "limitations": [
    "No EMF exposure metrics reported (e.g., frequency, power, SAR)",
    "No health outcomes assessed; study focuses on image transfer and quality",
    "Sample size and details of image set/readers not reported in the abstract"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "medical image transfer",
    "emergency care",
    "CT",
    "DICOM",
    "JPEG compression",
    "CDMA",
    "mobile phone",
    "PDA",
    "telemedicine",
    "image quality",
    "BVC analysis"
  ],
  "suggested_hubs": []
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.6009/jjrt.kj00003111390
PubMed: 12540767

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