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Whole body DWI with high quality and speed realized with Ingenia

Best Practice
Takahara, Taro, M.D., Ph.D. Tokai University School of Medicine • Japan

Ingenia allows some important advances in whole body imaging: the dStream platform, high SNR, dS-SENSE, wide bore, large FOV and huge scanning range help to reduce imaging time, particularly in whole body diffusion weighted imaging (DWIBS). In addition, workflow improvements reduce the setup time. And the image quality also benefits from the high SNR and the excellent homogeneity in the wide bore.

 Taro Takahara, MD, PhD
Taro Takahara, MD, PhD

Taro Takahara, MD, PhD, is using Ingenia 3.0T at Tokai University, Tokyo, Japan. He pioneered DWIBS (diffusion weighted whole body imaging with background body signal suppression) a few years ago, and now uses this free breathing method on Ingenia for imaging, staging and monitoring in oncology patients without contrast agent and without ionizing radiation.

Image quality is amazing

“Ingenia 3.0T offers very high homogeneity, even with the 70 cm wide bore. This is really important for DWI,” Dr. Takahara says.

“Until now, 3.0T DWI was sensitive to image distortion, but with the Ingenia 3.0T we can obtain beautifully homogeneous DWIBS. In addition, Ingenia’s dStream platform increases SNR, because the signal is immediately digitized in the coil at the patient and transported via fiber optics. This significant increase in SNR also progresses DWIBS. The image quality is amazing.”

“There’s more that makes Ingenia a real whole-body scanner,” he continues. “It allows a scanning range of up to 200 cm (over 6.5 ft). And the wide-bore gantry of 70 cm means we can now accept larger patients.”

Direct coronal DWIBS and STIR in neurofibromatosis

Click on the images to enlarge them for better appreciation of the high resolution.
 STIR COR Direct COR DWI SAG Reformat
STIR COR
Direct COR DWI
SAG Reformat


A 49-year-old woman with neurofibromatosis. Lesion distribution is well demonstrated without distortion in both the original coronal and reformatted sagittal images. Scan time per DWIBS station 2:12 min., so 6:36 min. total.

Exam time reduced by faster scanning and workflow

“Faster scans are important in DWIBS, which used to be a 4-station scan taking up to 30 minutes, and covering about 120 cm. Now, with Ingenia’s increased SNR, the same scan can be done in about 15 minutes,” says Dr. Takahara.


“In a recent study, we measured distortion and g-factor. Ingenia showed significantly less distortion and better g-factor than Achieva 3.0T, particularly at a high dS SENSE factor of 5. Thanks to this advantage, we finally succeeded in doing fast, direct coronal DWIBS instead of axial. Since the number of slices can be reduced in the coronal scan, as the imaging volume is smaller in AP direction, it takes only 2:15 minutes for one station with 30 cm coverage. In this way, we can now do DWIBS in about 9 minutes for 4 stations.”


“Apart from faster scanning, Ingenia elps reduce exam time by its workflow enhancements for whole body imaging,” says Dr. Takahara. “The Posterior coil integrated in the table and the lightweight Anterior coils reduce patient setup time. The SmartSelect feature reduces planning time by automatic selection of coil elements to use for the chosen FOV,” he explains. “By the way, this is not only advantageous for whole body imaging, but also for regional scanning, because we don’t have to worry about the precise location of the coil anymore. The scanner will select the coil elements matching the FOV.”


“I believe Ingenia 3.0T is really ready for whole body scanning. It is the first practical whole body DWI scanner. The fast, high quality DWIBS obtainable with Ingenia 3.0T can fit in routine clinical practice,” Dr. Takahara concludes.



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Best Practice
Ingenia 3.0T
Release 4
Body, DWIBS, SNR, whole body, whole body DWI
 

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