EJ 793-1993
EJ · 1993-12-13
Medical Gel Type Technetium [99mTC] Generator
2Expert Interpretation
In-depth interpretation of EJ 793-93 nuclear industry standard, covering the technical requirements, eluent indicators, inspection methods and transportation specifications of medical gel-type technetium [99mTc] generators. Analyze the structural principle of the generator, radioactive purity control and key points of clinical nuclear medicine application.
Analysis of the core content of the standard
| Technical dimension | Gel-type generator | Conventional generator |
|---|---|---|
| Structural form | Zirconyl molybdate colloid particles | Alumina column |
| Elution efficiency | 70% | 60-80% |
| Use cycle | 15 days | 7-14 days |
Detailed explanation of key technical requirements
The standard stipulates that gel particles must meet the particle size range of 0.18-0.90mm and the chemical stability must be better than that of normal saline. The key indicators of eluent include:
- Radioactive nuclear purity: 99Mo activity <0.1%
- pH range: 4.0-7.0
- Bacterial endotoxin: <300EU/V
Clinical implementation recommendations
Note for actual use:
- The first 10mL of eluent should be discarded during the first elution each day
- Perform leakage detection (negative pressure method) regularly
- Transportation must comply with the requirements of GB 11806 Type B packaging
Technology evolution analysis
The 1993 version of the standard first standardized the gel-type generator technology. Compared with the traditional column generator:
- Advantages: Higher 99mTc elution efficiency
- Limitations: Complex gel preparation process
3Version History
EJ 793-1993
1993-12-13
5Citation Network
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6Frequently Asked Questions
What is EJ 793-1993?
EJ 793-1993 — Medical Gel Type Technetium [99mTC] Generator is an international standard developed by Professional Standard - Nuclear Industry.
What does EJ 793-1993 cover?
This standard covers:
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of EJ 793-1993?
The current published version is EJ 793-1993, published on 1993-12-13. Always check for amendments or pending revisions.
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