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Abstract #0301

Possibility of the Reduction of Gd Dose using Spiral Spin-Echo Method for Contrast Enhanced Scans at 3.0T    

Ravi Varma Dandu1, Rithika Varma Dandu2, Karthick Raj Rajendran3, Narayana Rolla4, and Indrajit Saha5
1Citi Neuro Centre, Hyderabad, India, 2RV College of Engineering, Bengaluru, India, 3Philips Healthcare, Eindhoven, Netherlands, 4Philips Healthcare, Bangalore, India, 5Philips Healthcare, Gurgaon, India

This study compares the performance of spin echo T1 with spiral k-space filling and three other techniques, for post contrast T1-weighted imaging of the brain. The lesion enhancement in each technique was evaluated after incremental fractional doses of gadolinium injection. The enhancement achieved on T1-FFE and T1-TSE techniques with full dose contrast could be achieved with 50% to 75% dose contrast in spiral imaging. Spiral imaging can thus be used to reduce the dose of injected contrast medium (by at least 25% and up to 50%) without compromising on the diagnostic quality of the post contrast study.

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