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Technically Speaking – It’s All About Quality

Learn about the technical aspects of image quality in medical imaging, including patient history, dose preparation, imaging parameters, image quantification, and more. Gain insights into common image abnormalities and how to prevent them.

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Technically Speaking – It’s All About Quality

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  1. Technically Speaking – It’s All About Quality Gee Mom How Did You Get That Artifact?

  2. What’s It All About? Image Quality As a technologist you are directly responsible for all the technical aspects • Patient History • Dose preparation/correct radiopharmaceutical • Defining the correct imaging parameters • Image quantification • End result = image quality

  3. Show Me Fog! • Dynamic images are taken in a GI Reflux exam • Initial images show the stomach • Second set identifies additional active • Your thoughts?

  4. What’s A Drift? • Spot views of a bone scan are taken two hours post dose • The upper set of images identify abnormal changes in intensity in the spine that do not correlate with one another • The lower set has corrected for this defect • What’s cookin?

  5. Its Not PE – So What Is It? • LLAT indicates PE • PE defect is not seen in the LPO • What might cause this defect? • Lesson - Always look for the correlation in an image

  6. Does The Whole Body Bone Have Multiple Hot Spots? • Whole body bone scan indicates metastatic disease • What if the flood shows abnormalities? • How would that effect your image quality on a WB Bone Scan? • Next page

  7. Take a Look At Your Flood ! • Intrinsic floods where taken • Could these floods cause the poor image quality seen the WB Bone? • Next page

  8. Does This Image Look Normal? • GI Bleeding study • What’s wrong with this image? • And the lesson is?

  9. What’s In The Photopenic Area? • Spot views of a delayed bone scan are taken • Huston – Is there a problem? • What is it?

  10. Can You Even Tell What It Is? • This is a 2 hour image of the injection site in a cisternogram • In111DPTA is in the spine • So what ever happened to image qulaity?

  11. High Energy And Too Much Activity • This is a Whole Body I131 scan • 100 mCi and 72 hours later revealed the following image • Image shows • Biodistribution of I131 • Star artifact • Ray of the star can interfere with image interpretation • So what can you do about it?

  12. Urine In – Your Out • It’s a bone scan • What caused this defect? • How should this situation be dealt with?

  13. Yet Another Few Hot Spots • What are these hot spots? • Is it in the bone or not? • Do additional images need to be taken?

  14. It’s Suppose To Just Be a Lung Perfusion Scan • 4 mCi of Tc99mMAA was administered IV • Is this normal biodistribution? • Is this particle breakdown?

  15. Aerosol Ventilation Lacks Quality • Radioaerosol indicates excessive background • What might be the cause? • How can you prevent this in the future?

  16. Bone Scintigraphy – Lacks Uptake • Patient has undergone radiation therapy • Can you find therapy site? • What do you know about this phenomenon?

  17. The Fliperizer • Serial imaging is taken of the hepatobiliary system • What might have caused this abnormality?

  18. Radiopharmaceutical To Pharmaceutical Interaction • Patient was injected with 20 mCi of Tc99mMDP • Hyperparathyroidism • Lungs and stomach uptake?

  19. Gastric Reflux Abnormality • 500 uCi of Tc99mSC is administered IV • Is there anything abnormal noted in the exam? • What causes the abnormality?

  20. End of Lecture Return to the Table of Content

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