Development and use of a nonrestraining waveguide chamber for rapid microwave radiation killing of the mouse and neonate rat.

Journal of pharmacological methods · 1982 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 5969

Describes two alternate nonrestraining waveguide chamber designs and a positioning device for use with microwave generators. The chambers are designed for use with 2450 MHz microwave energy for rapid killing of small rodents.

Study snapshot

PublicationJournal of pharmacological methods · 1982

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

The use of microwave energy for rapid killing of small rodents such as the mouse or rat has become a standard pharmacologic technique since approximately 1975. This method allows investigation of rapidly modulated neurochemical indices, neuromodulatory substances, and some neurotransmitters to be determined at basal concentrations in brain regions and microregions. Previously described devices for use with microwave generators have relied on total body restraining holders in order to properly position rodents and neonates within a closed waveguide during microwave energy exposures. The present information describes two alternate chamber designs which do not require restraint of the rodent. A positioning device is described which must be used with the waveguide chambers. The animal chambers are designed to be used with 2450 MHz energy.

Machine Enhanced Logic

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

Populationmouse and neonate rat

Sample sizeNot supplied

Exposuremicrowave · 2450 MHz

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

Development/use of nonrestraining waveguide chamber for microwave killing of rodents
Ability to position rodents/neonates without restraint during microwave exposure

Limitations

No exposure duration or dosimetry (e.g., SAR) reported in abstract
No sample size or quantitative performance metrics reported in abstract
Primarily a methods/device description rather than a health-effects study

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": "microwave",
    "source": "laboratory microwave generator/waveguide chamber",
    "frequency_mhz": 2450,
    "sar_wkg": null,
    "duration": null
  },
  "population": "mouse and neonate rat",
  "sample_size": null,
  "outcomes": [
    "Development/use of nonrestraining waveguide chamber for microwave killing of rodents",
    "Ability to position rodents/neonates without restraint during microwave exposure"
  ],
  "main_findings": "Describes two alternate nonrestraining waveguide chamber designs and a positioning device for use with microwave generators. The chambers are designed for use with 2450 MHz microwave energy for rapid killing of small rodents.",
  "effect_direction": "unclear",
  "limitations": [
    "No exposure duration or dosimetry (e.g., SAR) reported in abstract",
    "No sample size or quantitative performance metrics reported in abstract",
    "Primarily a methods/device description rather than a health-effects study"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave energy",
    "waveguide chamber",
    "2450 MHz",
    "rodent",
    "mouse",
    "neonate rat",
    "nonrestraining chamber",
    "rapid killing"
  ],
  "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: 10.1016/0160-5402(82)90043-2
PubMed: 6296548

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