Tagged MR Imaging of Intracranial Aneurysm Models
Haruo Isoda,a,
Yasutomi Kinosadaa,
Satoshi Isogaia,
Yasuo Takeharaa and
Tatsuhiko Itoa
a From the Department of Radiology, Hamamatsu University School of Medicine, Hamamatsu, Japan (H.I., S.I., Y.T.); the Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan (Y.K.); and the Department of Radiology, Seirei Hamamatsu General Hospital, Hamamatsu, Japan (T.I.).
View larger version (110K):
[in a new window]
|
FIG 1. A–D, Spin-echo T1-weighted images (300/15/1) of lateral and terminal saccular aneurysm models with fluid but without active flow. The height and fundus diameter of the models were 10 mm; the neck diameters were 2.5 mm (A, C) and 10.0 mm (B, D).
| |
View larger version (27K):
[in a new window]
|
FIG 2. Flow velocity during cardiac cycle.
| |
View larger version (127K):
[in a new window]
|
FIG 3. Tagged MR images of the lateral saccular aneurysm model with a neck size of 2.5 mm.
A–F, The time difference between images is 25 milliseconds (large arrows indicate the flow direction of the parent vessel; small arrows, the tag stripe).
| |
View larger version (129K):
[in a new window]
|
FIG 4. Tagged MR images of the lateral saccular aneurysm model with a neck size of 10 mm.
A–F, The time difference between images is 25 milliseconds (large arrows indicate the flow direction of the parent vessel; small arrows, the high signal band between tag stripes).
| |
View larger version (62K):
[in a new window]
|
FIG 5. Diagram of circulation in lateral saccular aneurysm models.FIG 6. Tagged MR images of the terminal saccular aneurysm model with a neck size of 2.5 mm.
A–F, The time difference between images is 25 milliseconds (large arrows indicate the flow direction of the parent vessel; small arrows, the tag stripe).
| |
View larger version (52K):
[in a new window]
|
FIG 7. Diagram of circulation in a terminal saccular aneurysm model with a neck size of 2.5 mm.FIG 8. Tagged MR images of the terminal saccular aneurysm model with a neck size of 10 mm.
A–F, The time difference between images is 25 milliseconds (arrows indicate the flow direction of the parent vessel model).
| |
