Maintaining diagnostic
image quality
 while

managing radiation dose

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The case that was submitted by Andre Gajadhar is about managing radiation dose to patients in Nuclear Medicine while maintaining imaging quality.

Andre Gajadhar

 

NCRHA

 

Trinidad and Tobago

Andre Gajadhar

 

NCRHA

 

Trinidad and Tobago

The case that was submitted by Andre Gajadhar is about managing radiation dose to patients in Nuclear Medicine while enhancing imaging quality.
The image quality was not the same when using a HDP dose of 4 mCi instead of 20, but a proper diagnosis was still possible.”

––  Andre Gajadhar – Technologist

NCRHA, Trinidad and Tobago

Clinical and patient background

The subject was a 60-year old male with a history of prostate cancer, high PSA (Prostate-Specific Antigen) level and lesion, as seen on a CT scan of the L4-L5 vertebral bodies.

Dose management methods and techniques that were used

The patient was given 4 mCi of HDP and an imaging time of 13cm/min at 3 years post injection with flushing of the syringe 3 times, using the patient’s own blood.
 

Conclusions and results

The image quality was not the same as when using an HDP dose of 20 mCi, but a proper diagnosis was still possible.

Discussion of case outcome(s) and future implications

A lower dose can be used, but a minimum of 10 mCi should be used, instead of 20 mCi for adults – with an increase in scan time of about 50-60%.

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