PURPOSE: Estimation of the stability of @entity438 requires precise monitoring of their volumes. This report describes a method of magnetic resonance (MR) imaging and three-dimensional postprocessing to study the evolution of these @entity439 in a prospective cohort of @entity1 not immediately suitable for surgery or endovascular treatment. MATERIALS AND METHODS: Ten @entity1 with @entity439 of the intracranial internal carotid artery underwent serial MR studies. Five @entity1 were studied at two time points and the remainder at multiple time points (mean delay between studies, 12.6 mo    3.8). For each @entity1 , studies from all time points were coregistered. The volumes of each vessel component were calculated. RESULTS: Mean @entity439 volume was 833 mm(3)    878. Mean annual rate of volume progression was 1.37%    2.09. All @entity439 were @entity715 -free. CONCLUSIONS: This study indicates that, given the relatively low rate of progression of @entity439 and the complexity of their shape, three-dimensional quantitative volumetric methods can be helpful in monitoring whether any growth has occurred.

Temporal stability of XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity715 :: ('MESH:D013927', 'Disease') :: ['thrombus'] @entity439 :: ('MESH:D000783', 'Disease') :: ['dysplastic fusiform aneurysms', 'aneurysms', 'fusiform aneurysms', 'aneurysm'] @entity438 :: ('MESH:D002532', 'Disease') :: ['dysmorphic fusiform aneurysms of the intracranial internal carotid artery']
@entity438 :: (MESH:D002532,Disease) :: ['dysmorphic fusiform aneurysms of the intracranial internal carotid artery']
