Analysis of Correlation between the Number of Lenticulostriate Arteries and Hypertension Based on High-Resolution MR Angiography Findings

Chen, Y.-c.; Li, M.-h.; Li, Y.-h.; Qiao, Rui-Hua

doi:10.3174/ajnr.a2667

Cited by 19 publications

(12 citation statements)

References 25 publications

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“…A previous study reported no difference in the mean number of LSA branches in a hypertensive group older than 50 years of age compared with an age-matched nonhypertensive group. 12 Similarly, in the present study, patients and controls were 50 years of age or older, and the average number of LSA branches was not statistically related to HTN.…”

Section: Discussionsupporting

confidence: 55%

“…15 However, there are few imaging studies of the LSA, mainly owing to the required high resolution not being readily attainable by conventional imaging modalities. 9,12,14,16 Conventional angiography can provide sufficient resolution, but it is invasive and can be applied only in selected cases. Thus, a noninvasive and widely applicable imaging method to visualize the LSA branches is required.…”

Section: Discussionmentioning

confidence: 99%

“…The relationship between decreased LSA visualization and hypertension was previously reported by using a 3T MR imaging system. 12 However, there are no studies that compare LSA visualization between patients with a stroke at the basal ganglia and/or its vicinity and control subjects by using 1.5T or 3T MR imaging. Dilated LSA branches were visualized noninvasively with time-of-flight MRA by using 1.5T and 3T MR imaging in patients with Moyamoya disease.…”

mentioning

confidence: 99%

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Visualization of Lenticulostriate Arteries by Flow-Sensitive Black-Blood MR Angiography on a 1.5T MRI System: A Comparative Study between Subjects with and without Stroke

Okuchi¹,

Okada²,

Ihara³

et al. 2012

AJNR Am J Neuroradiol

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Visualization of Lenticulostriate Arteries by Flow-Sensitive Black-Blood MR Angiography on a 1.5T MRI System: A Comparative Study between Subjects with and without Stroke

Okuchi¹,

Okada²,

Ihara³

et al. 2012

AJNR Am J Neuroradiol

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“…It is based on the contrast between rapidly moving arterial blood and stationary tissues that surround the vessel. To date, most MRA studies have been limited to qualitative or semi-quantitative assessments (El-Barhoun et al, 2009), partial morphometric analyses (Bullitt et al, 2009; Chen et al, 2011), small numbers of subjects (Canham and Finlay, 2004), and proprietary datasets (Nowinski et al, 2009a). A more comprehensive structural characterization of the cerebral arterial tree can be achieved by reconstructing the vascular arborization into an explicit 3D representation (Bullitt et al, 2005; Passat et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Digital reconstruction and morphometric analysis of human brain arterial vasculature from magnetic resonance angiography

et al. 2013

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Characterization of the complex branching architecture of cerebral arteries across a representative sample of the human population is important for diagnosing, analyzing, and predicting pathological states. Brain arterial vasculature can be visualized by magnetic resonance angiography (MRA). However, most MRA studies are limited to qualitative assessments, partial morphometric analyses, individual (or small numbers of) subjects, proprietary datasets, or combinations of the above limitations. Neuroinformatics tools, developed for neuronal arbor analysis, were used to quantify vascular morphology from 3 T time-of-flight MRA high-resolution (620 μm isotropic) images collected in 61 healthy volunteers (36/25 F/M, average age = 31.2 ± 10.7, range = 19–64 years). We present in-depth morphometric analyses of the global and local anatomical features of these arbors. The overall structure and size of the vasculature did not significantly differ across genders, ages, or hemispheres. The total length of the three major arterial trees stemming from the circle of Willis (from smallest to largest: the posterior, anterior, and middle cerebral arteries; or PCAs, ACAs, and MCAs, respectively) followed an approximate 1:2:4 proportion. Arterial size co-varied across individuals: subjects with one artery longer than average tended to have all other arteries also longer than average. There was no net right–left difference across the population in any of the individual arteries, but ACAs were more lateralized than MCAs. MCAs, ACAs, and PCAs had similar branch-level properties such as bifurcation angles. Throughout the arterial vasculature, there were considerable differences between branch types: bifurcating branches were significantly shorter and straighter than terminating branches. Furthermore, the length and meandering of bifurcating branches increased with age and with path distance from the circle of Willis. All reconstructions are freely distributed through a public database to enable additional analyses and modeling (cng.gmu.edu/brava).

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“…Although the lenticulostriate arteries have been studied using various neuroimaging methods [17][18][19][20] , identification of smaller BPAs, such as distal segments or branches of the AchoA and PCA, remains a challenge [21][22][23][24] .…”

Section: Introductionmentioning

confidence: 99%

The Posterior Limb of the Internal Capsule as the Subcortical Transitional Zone of the Anterior and Posterior Circulations: Insights from Human 7T MRI

Kurabe

Okamoto²,

Suzuki³

et al. 2016

Cerebrovasc Dis

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Background: In patients with cerebral infarction, identifying the distribution of infarction and the relevant artery is essential for ascertaining the underlying vascular pathophysiological mechanisms and preventing subsequent stroke. However, visualization of the basal perforating arteries (BPAs) has had limited success, and simultaneous viewing of background anatomical structures has only rarely been attempted in living human brains. Our study aimed at identifying the BPAs with 7T MRI and evaluating their distribution in the subcortical structures, thereby showing the clinical significance of the technique. Methods: Twenty healthy subjects and 1 patient with cerebral infarction involving the posterior limb of the internal capsule (ICpost) and thalamus underwent 3-dimensional fast spoiled gradient-echo sequence as time-of-flight magnetic resonance angiography (MRA) at 7T with a submillimeter resolution. The MRA was modified to detect inflow signals from BPAs, while preserving the background anatomical signals. BPA stems and branches in the subcortical structures and their origins were identified on images, using partial maximum intensity projection in 3 dimensions. Results: A branch of the left posterior cerebral artery (PCA) in the patient ran through both the infarcted thalamus and ICpost and was clearly the relevant artery. In 40 intact hemispheres in healthy subjects, 571 stems and 1,421 branches of BPAs were detected in the subcortical structures. No significant differences in the numbers of stems and branches were observed between the intact hemispheres. The numbers deviated even less across subjects. The distribution analysis showed that the subcortical structures of the telencephalon, such as the caudate nucleus, anterior limb of the internal capsule, and lenticular nucleus, were predominantly supplied by BPAs from the anterior circulation. In contrast, the thalamus, belonging to the diencephalon, was mostly fed by BPAs from the posterior circulation. However, compared with other subcortical structures, the ICpost, which marks the anatomical boundary between the telencephalon and the diencephalon, was supplied by BPAs with significantly more diverse origins. These BPAs originated from the internal carotid artery (23.1%), middle cerebral artery (38.5%), PCA (17.3%), and the posterior communicating artery (21.1%). Conclusions: The modified MRI method allowed the detection of the relevant BPA within the infarcted area in the stroke survivor as well as the BPAs in the subcortical structures of living human brains. Based on in vivo BPA distribution analyses, the ICpost is the transitional zone of the anterior and posterior cerebral circulations.

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Analysis of Correlation between the Number of Lenticulostriate Arteries and Hypertension Based on High-Resolution MR Angiography Findings

Cited by 19 publications

References 25 publications

Visualization of Lenticulostriate Arteries by Flow-Sensitive Black-Blood MR Angiography on a 1.5T MRI System: A Comparative Study between Subjects with and without Stroke

Visualization of Lenticulostriate Arteries by Flow-Sensitive Black-Blood MR Angiography on a 1.5T MRI System: A Comparative Study between Subjects with and without Stroke

Digital reconstruction and morphometric analysis of human brain arterial vasculature from magnetic resonance angiography

The Posterior Limb of the Internal Capsule as the Subcortical Transitional Zone of the Anterior and Posterior Circulations: Insights from Human 7T MRI

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