[Assessment of the signal intensity distribution pattern within the unruptured cerebral aneurysms using color-coded 3D MR angiography].
To evaluate the interaction between the MR signal intensity distribution pattern and bleb formation/ deformation of the aneurysmal dome, fifty cases of the unruptured cerebral aneurysms were investigated with the color-coded 3D MR angiography. Patterns were categorized into central-type, neck-type and peripheral-type according to the distribution of MR signals with low-, moderate- and high signal intensity areas. Imaging analysis revealed the significant relationship (P < 0.02) of the peripheral-type aneurysms to the bleb formation and deformation of the dome, compared with those of central- and neck-type. Additionally, peripheral-type signal intensity distribution pattern was shown with aneurysms harboring relatively large dome size and lateral-type growth including internal carotid aneurysms. Prospective analysis of intraaneurysmal flow pattern with the color-coded 3D MR angiography may provide patient-specific analysis of intraaneurysmal flow status in relation to the morphological change of the corresponding aneurysmal dome in the management of unruptured cerebral aneurysms.
Satoh
Toru
T
Department of Neurological Surgery, Ryofukai Satoh Neurosurgical Hospital, Hiroshima, Japan. ucsfbtrc@urban.ne.jp
Omi
Megumi
M
Ohsako
Chika
C
Katsumata
Atsushi
A
Yoshimoto
Yusuke
Y
Tsuchimoto
Shoji
S
Kunishio
Katsuzo
K
Onoda
Keisuke
K
Tokunaga
Koji
K
Sugiu
Kenji
K
Date
Isao
I
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003116:Color; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000473:pathology; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged