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Non-contrast MRA of high risk cerebral aneurysm

Case Study
Li, Yuehua, M.D., Ph.D. Shanghai No.6 Hospital • China, People's Republic of

Patient history

A patient with a high risk cerebral aneurysm underwent 3D TOF MRA in The Sixth Affiliated People’s Hospital, Shanghai Jiao Tong University, China. 

MR examination

MR angiography was done on Achieva 3.0T with an 8-channel head coil.


3D T1W FFE was used with TR 35 ms, TE 7 ms, flip angle 20 degrees, FOV 250×190×108 mm,

matrix 732 × 1024, 4 slabs, 180 slices of 0.8 mm. Scan time was 8:56 min.


MIP and volume-rendered images were reconstructed.

Single-artery highlighting method was used to reduce arterial overlay.


Click on an image to enlarge.
3D TOF MRA <br>

DSA during therapy DSA after therapy
DSA during therapy
DSA after therapy


The volume rendered 3D TOF MRA image visualizes an irregularly shaped cerebral aneurysm arising from the C7 segment. visualization of small cerebral aneurysms similar to DSA.


The physician qualified the lesion as instable and interventional therapy was performed.

DSA is used during therapy. After therapy DSA indicates that the aneurysm has been occluded completely.

Clinical impact of using 3D TOF MRA for imaging smal aneurysms

This non-invasive 3D TOF MRA method provides excellent images for the visualization of small aneurysms with a high degree of accuracy and sensitivity. MIP and volume rendered images allows viewing from multiple angles.


Both MR and CT can be used to image aneurysms, but MR angiography can be performed without contrast agent, and without ionizing radiation it is not influenced by skull bones.



Results from case studies are not predictive of results in other cases. Results in other cases may vary.

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Nov 15, 2016

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Case Study
Achieva 3.0T
3D TOF, aneurysm, DSA, Head, MR angiography, MRA, neurovascular, SENSE Head coil, Vascular

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