Constructive Interference in Steady State Imaging of Moyamoya Disease.

Komiyama, Masaki; Ishiguro, Tomoya; Nishikawa, Misao; Yasui, Toshihiro; Morikawa, Toshie; Kitano, Shouhei; Sakamoto, Hiroaki

doi:10.2176/nmc.42.11

Cited by 6 publications

(3 citation statements)

References 17 publications

(41 reference statements)

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“…3,4). These cisternal MMVs have been visualized using high-resolution T2WI with constructive interference in steady state imaging on 1.5T systems and may be beneficial in diagnosing MMD using MRI [30]. However, this sophisticated technique requires a relatively long scan time, and has thus been difficult to use in screening and frequent follow-up examinations.…”

Section: Discussionmentioning

confidence: 99%

Diagnosis of moyamoya disease using 3-T MRI and MRA: value of cisternal moyamoya vessels

et al. 2012

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Section: Discussionmentioning

confidence: 99%

Diagnosis of moyamoya disease using 3-T MRI and MRA: value of cisternal moyamoya vessels

et al. 2012

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“…Judgment of the outer diameter of the blood vessel may be possible by evaluating the region around the thrombus region by heavy T2 weighted image (T2WI) such as 3D-constructive interference in steady state (CISS). 13) However, there may be fewer facilities that perform evaluation by heavy T2WI in the acute phase of general stroke. In this patient, the outer diameter of the blood vessel was not evaluated by heavy T2WI before surgery and the lesion was unable to be considered twig-like MCA.…”

Section: Discussionmentioning

confidence: 99%

Mechanical Thrombectomy for ICA Top Occlusion with Twig-Like MCA: A Case Report

Sakai

Yoshikawa

Sato

2022

JNET

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We report a case of hemorrhagic complication after mechanical thrombectomy (MT) for internal carotid artery (ICA) occlusion with twig-like middle cerebral artery (MCA).Case Presentation: A 75-year-old man was admitted to our hospital with ICA occlusion. Recanalization was achieved by a direct aspiration first pass technique (ADAPT). The peripheral MCA was twig-like, but operators thought that a thrombus remained in the MCA first segment. The procedure was continued and suspended with perforation of the microguidewire. Conclusion:When performing MT for large vessel occlusion (LVO) with twig-like MCA, it is difficult to proceed a device to the periphery and there is a risk of hemorrhage.

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“…MRI assessment of ICA morphology in patients with MMD was first described by Komiyama et al [ 12 ] using constructive interference in steady-state or heavy T2 MRI, and Kaku et al [ 13 ] then used this method to measure the outer diameter of the ICA. Recent studies used high-resolution MRI (HR-MRI), such as T2 proton-density-weighted imaging, which can assess the morphology of the arterial wall [ 4 , 14 , 15 ].…”

Section: Discussionmentioning

confidence: 99%

Plasticity of the bony carotid canal and its clinical use for assessing negative remodeling of the internal carotid artery

et al. 2021

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Background and objective It has long been believed that the bony carotid canal has no plasticity and that a small canal represents a hypoplastic internal carotid artery. We aimed to show whether the carotid canal can narrow according to morphological changes in the internal carotid artery. Materials and methods The carotid canal diameter was longitudinally measured in seven individuals who underwent carotid artery ligation. As moyamoya disease is known to be associated with negative remodeling of the internal carotid artery, the carotid canal diameter was measured in 106 patients with moyamoya disease, and an association with the outer diameter of the internal carotid artery or a correlation with the disease stage was investigated. The carotid canal was measured by computed tomography (106 patients), and the outer diameter of the artery was measured by high-resolution magnetic resonance imaging (63 patients). The carotid canal area was calculated by the product of the maximum axial diameter and its perpendicular diameter. Results All seven patients who underwent carotid artery ligation showed narrowing of the carotid canal, and the carotid canal area decreased by 12.2%–28.9% during a mean follow-up period of 4.2 years. In patients with moyamoya disease, the carotid canal area showed a linear correlation with the outer area of the internal carotid artery (r = 0.657, p < 0.001), and a negative correlation with the disease stage (ρ = −0.283, p < 0.001). Conclusion The bony carotid canal has plasticity, and its area reflects the outer area of the internal carotid artery, therefore, it can be used to assess the remodeling of the carotid artery. A narrow carotid canal may not necessarily indicate hypoplastic internal carotid artery.

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Constructive Interference in Steady State Imaging of Moyamoya Disease.

Cited by 6 publications

References 17 publications

Diagnosis of moyamoya disease using 3-T MRI and MRA: value of cisternal moyamoya vessels

Diagnosis of moyamoya disease using 3-T MRI and MRA: value of cisternal moyamoya vessels

Mechanical Thrombectomy for ICA Top Occlusion with Twig-Like MCA: A Case Report

Plasticity of the bony carotid canal and its clinical use for assessing negative remodeling of the internal carotid artery

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