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Radioactive contamination from Tc Technegas ventilation scans can degrade SPECT images and pose radiation risks to staff. An ultra-low particulate air filter effectively captured airborne contaminants, improving safety in Nuclear Medicine departments.

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Area of Science:

  • Nuclear Medicine
  • Radiological Imaging
  • Medical Physics

Background:

  • Single-photon emission computed tomography (SPECT) enhances Ventilation/Perfusion scanning for pulmonary embolism diagnosis.
  • Ventilation scans require patients to inhale radioactive gas or vapor.
  • Radioactive environmental contamination is a potential issue during these procedures.

Purpose of the Study:

  • To report radioactive environmental contamination from Tc Technegas used in ventilation SPECT scans.
  • To assess the impact of contamination on imaging equipment and staff safety.
  • To investigate the efficacy of an ultra-low particulate air filter in mitigating contamination.

Main Methods:

  • Quantification of airborne radioactive contamination during Tc Technegas administration.
  • Assessment of contamination levels within gamma camera heads.
  • Evaluation of an ultra-low particulate air filter for sequestration of airborne contaminants.

Main Results:

  • Significant airborne contamination occurred in 64% of patients undergoing ventilation procedures.
  • Contamination was found to concentrate in gamma camera heads, potentially degrading image quality.
  • The ultra-low particulate air filter demonstrated effectiveness in capturing airborne radioactive contaminants.

Conclusions:

  • Tc Technegas ventilation SPECT scans can lead to significant airborne radioactive contamination.
  • Contamination poses risks to imaging quality and occupational health for Nuclear Medicine staff.
  • Implementing filtration devices is crucial for minimizing airborne contamination and ensuring staff safety.