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

Okuchi, Sachi; Okada, Tomohisa; Ihara, Masafumi; Gotoh, Kazuo; Kido, Ayumu; Fujimoto, Keita; Yamamoto, Akira; Kanagaki, Mitsunori; Tanaka, Shiro; Takahashi, Ryōsuke; Togashi, Kaori

doi:10.3174/ajnr.a3310

Cited by 24 publications

(20 citation statements)

References 24 publications

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“…3 Investigations using flow-sensitive black-blood MRA with MR imaging have confirmed that it is superior for visualizing LSA branches in patients with stroke. 11,15 Other studies using 7T MR imaging have reported advanced noninvasive methods for visualization of the cerebral microvasculature, including the LSAs. 16,17 However, it is not easy to image the LSA when using TOF-MRA with conventional 1.5T MR imaging systems, which is the most prevalent technique currently available.…”

Section: Discussionmentioning

confidence: 99%

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Visualization of Lenticulostriate Arteries on CT Angiography Using Ultra-High-Resolution CT Compared with Conventional-Detector CT

Murayama

Suzuki²,

Nagata³

et al. 2019

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE: The newly developed ultra-high-resolution CT is equipped with a 0.25-mm detector, which has one-half the conventional section thickness, one-half the in-plane detector element width, and one-half the reconstructed pixel width compared with conventional-detector CT. Thus, the ultra-high-resolution CT scanner should provide better image quality for microvasculature than the conventional-detector CT scanners. This study aimed to determine whether ultra-high-resolution CT produces superior-quality images of the lenticulostriate arteries compared with conventional-detector CT. MATERIALS AND METHODS: From February 2017 to June 2017, thirteen patients with aneurysms (4 men, 9 women; mean age, 61.2 years) who underwent head CTA with both ultra-high-resolution CT and conventional-detector CT were enrolled. Two boardcertified radiologists determined the number of all lenticulostriate arteries on the CTA coronal images of the MCA M1 segment reconstructed from 512 matrixes on conventional-detector CT and 1024 matrixes on ultra-high-resolution CT. RESULTS: There were statistically more lenticulostriate arteries identified on ultra-high-resolution CT (average, 2.85 6 0.83; 95% CI, 2.509-3.183) than on conventional-detector CT (average, 2.17 6 0.76; 95% CI, 1.866-2.480) (P 4 .009) in 16 of the total 26 MCA M1 segments. CONCLUSIONS: Improvements in lenticulostriate artery visualization were the result of the combined package of the ultra-high-resolution CT scanner plus the ultra-high-resolution scanning protocol, which includes higher radiation doses with lower than the national diagnostic reference levels and stronger adaptive iterative dose-reduction processing. This package for ultra-high-resolution CT is a simple, noninvasive, and easily accessible method to evaluate microvasculature such as the lenticulostriate arteries.

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Section: Discussionmentioning

confidence: 99%

“…Previous studies evaluating the LSAs on MR imaging and CTA determined the number of LSA branches within 5 mm from the MCA and the number of branches beyond 5 mm. 11,12 The number of LSAs, defined as those longer than 5 mm, were analyzed. 12 Two boardcertified radiologists (K.M.…”

Section: Image Postprocessing and Data Analysismentioning

confidence: 99%

Visualization of Lenticulostriate Arteries on CT Angiography Using Ultra-High-Resolution CT Compared with Conventional-Detector CT

Murayama

Suzuki²,

Nagata³

et al. 2019

AJNR Am J Neuroradiol

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“…High-resolution computed tomography angiography and flow-sensitive black-blood magnetic resonance angiography (MRA) may be useful to detect small perforating arteries. 15 , 16) Ultrahigh-field MRA with 7.0T may be promising with respect to visualizing these small vessels. 17) …”

Section: Discussionmentioning

confidence: 99%

Parent Artery Occlusion for Unruptured Cerebral Aneurysms: The Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and 2

Ishii

Miyamoto

Ito

et al. 2014

Neurol. Med. Chir.(Tokyo)

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Parent artery occlusion (PAO) is an alternative to surgical clipping or endovascular endosaccular coil embolization for the management of cerebral aneurysms. Most giant and fusiform aneurysms are not amenable to endosaccular coil embolization due to anatomical considerations, such as a broad-neck. However, majority of reports regarding the safety of PAO are based on case series involving a relatively small number of patients. In the present study, a total of 381 consecutive patients with unruptured cerebral aneurysms who were treated with PAO were extracted from the Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and JR-NET2 database, which are nationwide surveys conducted by the Japanese Society of Neuroendovascular Therapy. The mean age of the 381 patients was 58.1 years, and 59.3% were female. The aneurysmal location included the vertebral artery (42%) and the cavernous portion of internal carotid artery (32%). The aneurysm size and shape consisted of fusiform (45%), giant (25%), and large (22%). Symptomatic lesions were present in 59.8% of the population. Technical success was achieved in 98.4%. The 30-day morbidity and mortality rates were 3.1% and 1.0%, respectively. The most frequent procedure-related complication was ischemic stroke, which occurred in 12.9% (distal embolism, 6.0%; branch occlusion, 3.9%). The 30-day morbidity and mortality rates related to ischemic strokes were 2.1% and 0.3%, respectively. PAO for unruptured aneurysms is feasible with a high technical success rate. Peri-procedural management of ischemic stroke is the key to enhance the safety of this treatment option.

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“…Flow-sensitive black-blood magnetic resonance angiography (FSBB-MRA) is a recently introduced noninvasive black-blood imaging technique for visualizing perforating arteries. 7 , 8) High-resolution 3-tesla FSBB-MRA can reveal tiny parenchymal arteries as well as cisternal and ventricular arteries in the coronal view of the brain. As of this writing, no previous report has addressed the use of FSBB-MRA in visualization of abnormal collateral vessels in moyamoya disease.…”

Section: Introductionmentioning

confidence: 99%

Visualization of Periventricular Collaterals in Moyamoya Disease with Flow-sensitive Black-blood Magnetic Resonance Angiography: Preliminary Experience

Funaki

Fushimi

Takahashi

et al. 2015

Neurol. Med. Chir.(Tokyo)

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Fragile abnormal collaterals in moyamoya disease, known as "moyamoya vessels," have rarely been defined. While flow-sensitive black-blood magnetic resonance angiography (FSBB-MRA) is a promising technique for visualizing perforating arteries, as of this writing no other reports exist regarding its application to moyamoya disease. Six adults with moyamoya disease underwent FSBB-MRA. It depicted abnormal collaterals as extended lenticulostriate, thalamic perforating, or choroidal arteries, which were all connected to the medullary or insular artery in the periventricular area and supplied the cortex. This preliminary case series illustrates the potential for FSBB-MRA to reveal abnormal moyamoya vessels, which could be reasonably defined as periventricular collaterals.key words: moyamoya disease, periventricular anastomosis, black-blood magnetic resonance angiography

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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

Abstract: BACKGROUND AND PURPOSE:The branches of the LSA are the main causative arteries for lacunar infarction, though the vascular changes are largely unknown. Herein, we examined the correlation of LSA imaging findings in patients with lacunar infarction compared with controls by using FSBB-MRA.

Cited by 24 publications

References 24 publications

Visualization of Lenticulostriate Arteries on CT Angiography Using Ultra-High-Resolution CT Compared with Conventional-Detector CT

Visualization of Lenticulostriate Arteries on CT Angiography Using Ultra-High-Resolution CT Compared with Conventional-Detector CT

Parent Artery Occlusion for Unruptured Cerebral Aneurysms: The Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and 2

Visualization of Periventricular Collaterals in Moyamoya Disease with Flow-sensitive Black-blood Magnetic Resonance Angiography: Preliminary Experience

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