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Impact of a new generation wide bore 3T MR scanner on image quality and imaging time 2012

General Spine

Sedat, Alibek, MD, Assoc. Professor
Hubertus, Gloger, MD, Non ASSR Member

Paper/Non-Mentor

Purpose

To study the impact of a new generation wide bore 3T MR scanner on image quality, imaging time and subjective patient comfort in daily routine work.

Methods & Materials

12 consecutive patients referred for spine imaging were examined with a routine institutional MR protocol and 3T wide bore MR scanner (Discovery 750w, General Electrics, Milwaukee/USA). Imaging time and signal to noise (SNR) ratios were calculated with manually drawn circular shaped region of interest (ROI) method and compared with results of 12 patients referred to 1.5T spine imaging within the same institution during the same time period. Patients were asked to evaluate subjective patient comfort during scan compared to previous experiences with 1.5T scanes with a three-point scale (i.d. "better", "equal" or "worse").

Results

With 3T wide bore MR, imaging time was decreased by 15%, SNR was increased by 40% when using comparable parameters (FOV, Matrix). All patients with previous experience of 1.5T MR (without wide-bore design) rated 3T imaging better with respect to patient comfort.

Conclusion

3T wide bore imaging with new generation MR scanner in daily routine decreases scan times by 15% and increases SNR by 40% and improves subjective patient comfort.