1 / 20

Evaluation of whole body dose reduction by modified injection technique.

Evaluation of whole body dose reduction by modified injection technique. Joemon John PET Imaging Centre Guy’s, King’s & St.Thomas ’ School of Medicine King’s College London. Evaluation of whole body dose reduction by modified injection technique. BACKGROUND MATERIALS & METHODS RESULTS

malcolm-kirby
Download Presentation

Evaluation of whole body dose reduction by modified injection technique.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Evaluation of whole body dose reduction by modified injection technique. Joemon John PET Imaging Centre Guy’s, King’s & St.Thomas’ School of Medicine King’s College London

  2. Evaluation of whole body dose reduction by modified injection technique. • BACKGROUND • MATERIALS & METHODS • RESULTS • CONCLUSION

  3. PET Imaging at St Thomas’ Hospital • Facilities two dedicated PET/CT scanners on-site cyclotron radiochemistry production laboratory • Scanning activity clinical & research scanning – 3,500 patient scans per annum oncology, cardiology & neurology 5 dedicated PET/CT scanning technologists / radiographers

  4. Radiation Protection Issues • Increase in patient throughput with PET/CT scanning raised concerns about staff whole body radiation dose • Imaging staff receive radiation when handling radioactivity & interaction with patients • 65 % of staff WBD received when administering radiopharmaceutical activity to the patient

  5. Purpose of the study • To improve the method of F-18 FDG administration • To evaluate a modified injection technique for reducing staff WBD • To compare WBD received during the time of administration by comparing the two different techniques

  6. Materials & Methods • Personnel involved 5 technologists 120 ambulatory clinical patients • Devices syringe holders lead shields dose monitor(Atomtex) extension tubing ( 30cm long, 1mm ID, 2mm OD )

  7. Activity administration Old technique New technique

  8. Old technique

  9. New technique

  10. Results

  11. Results mSv staff

  12. Results • Mean WBD received during administration: old technique was 0.64 – 1.9 mSv new technique was 0.39 – 0.94 mSv • Other factor affecting WBD: speed of administration

  13. Conclusion • Simple technique • Cost effective - less than £1 per patient increase • Significant reduction in staff WBD • Increased patient throughput per day whilst remaining within staff dose limits

  14. Activity administration Old technique New technique

  15. Whole body doses • No of clincal scans done in 2006/07 - 3248 2007/08 - 3551

  16. Other methods to reduce WBD

  17. WBD Distribution

More Related