scholarly journals First-in-man near-infrared spectroscopy proof of lipid-core embolization during carotid artery stenting

2016 ◽  
Vol 4 ◽  
pp. 915-918 ◽  
Author(s):  
Martin Horvath ◽  
Petr Hajek ◽  
James E. Muller ◽  
Jakub Honek ◽  
Cyril Stechovsky ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Artery ◽  
Near Infrared Spectroscopy ◽  
Carotid Artery Stenting ◽  
Near Infrared ◽  
Lipid Core

Near-infrared spectroscopy carotid plaque characteristics and cerebral embolism in carotid artery stenting

2021 ◽  
Vol 17 (7) ◽  
pp. 599-606
Author(s):  
Ichiro Nakagawa ◽  
Masashi Kotsugi ◽  
Hun Soo Park ◽  
Takanori Furuta ◽  
Fumiya Sato ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Artery ◽  
Near Infrared Spectroscopy ◽  
Carotid Artery Stenting ◽  
Carotid Plaque ◽  
Near Infrared ◽  
Cerebral Embolism

scholarly journals Investigation Concerning Use of Near-infrared Spectroscopy-based Device to Evaluate Hyperperfusion Phenomenon after Carotid Artery Stenting

2017 ◽  
Vol 45 (1) ◽  
pp. 1-6
Author(s):  
Yohei SATO ◽  
Osamu TONE ◽  
Mutsuya HARA ◽  
Jun KARAKAMA ◽  
Hideko HASHIMOTO ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Artery ◽  
Near Infrared Spectroscopy ◽  
Carotid Artery Stenting ◽  
Near Infrared

Effect of stenting on the near-infrared spectroscopy-derived lipid core burden index of carotid artery plaque

2019 ◽  
Vol 15 (3) ◽  
pp. e289-e296 ◽  
Author(s):  
Cyril Štěchovský ◽  
Petr Hájek ◽  
Martin Horváth ◽  
Josef Veselka
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Artery ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Carotid Artery Plaque ◽  
Lipid Core

Effectiveness of Near-Infrared Spectroscopy (NIRO-200NX, Pulse Mode) for Risk Management in Carotid Artery Stenting

2019 ◽  
Vol 131 ◽  
pp. e425-e432 ◽  
Author(s):  
Toshitsugu Terakado ◽  
Aiki Marushima ◽  
Yasuaki Koyama ◽  
Wataro Tsuruta ◽  
Tomoji Takigawa ◽  
...  
Keyword(s):  
Risk Management ◽  
Infrared Spectroscopy ◽  
Carotid Artery ◽  
Near Infrared Spectroscopy ◽  
Carotid Artery Stenting ◽  
Near Infrared ◽  
Pulse Mode

scholarly journals Limitation of Near Infrared Spectroscopy Cerebral Oximetry in Predicting Neurologic Intolerance during Carotid Artery Stenting with Proximal Protection

2019 ◽  
Author(s):  
Kanchan Bilgi ◽  
Rajeeb Kumar Mishra ◽  
Aravinda HR ◽  
Keyword(s):  
Blood Flow ◽  
Infrared Spectroscopy ◽  
Cerebral Ischemia ◽  
Carotid Artery ◽  
Near Infrared Spectroscopy ◽  
Carotid Artery Stenting ◽  
Near Infrared ◽  
Cerebral Oximetry ◽  
External Carotid ◽  
Bilateral Carotid

AbstractProximal balloon occlusion prior to carotid artery stenting is considered a relatively safe practice during endovascular treatment of carotid artery stenosis. Transient neurological deterioration affecting the ipsilateral hemisphere is seen soon after balloon inflation, when placed proximal to the stenotic segment. This occurs in cases of bilateral carotid disease due to insufficient collateral blood flow from the contralateral side. Near infrared spectroscopy cerebral oximetry (NIRS) is a valuable tool in detecting hypoperfusion- induced cerebral tissue desaturation (rSO2) during these procedures. This helps the interventional radiologist to deflate the balloon at the earliest to re-establish the cerebral blood flow. The non-invasive nature and continuous real-time interpretation make NIRS an attractive adjunct in the neuroanesthesiolgist's armamentarium for monitoring cerebral ischemia. However, significant contribution from chromophores in the extra-cerebral tissues and external carotid artery circulation can limit its sensitivity during occlusion of the internal carotid artery. In our case, it did not reflect brain ischemia during hypotension and when the neurologic symptoms were obvious. Commonly available cerebral oximetry sensors placed over the frontal region do not cover the parietal lobe where ischemia is likely to occur during occlusion of the carotid artery. In such scenarios, it has been shown that multi-channel NIRS has a better sensitivity in detecting cerebral ischemia. This case report highlights the importance of frequent neurological examination during carotid stenting as rSO2 values might not always suggest cerebral ischemia.

scholarly journals Lipid Core Plaque Distribution Using Near-infrared Spectroscopy Is Consistent with Pathological Evaluation in Carotid Artery Plaques

2020 ◽  
Vol 60 (10) ◽  
pp. 499-506
Author(s):  
Masashi KOTSUGI ◽  
Ichiro NAKAGAWA ◽  
Kinta HATAKEYAMA ◽  
HunSoo PARK ◽  
Fumiya SATO ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Artery ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Lipid Core ◽  
Pathological Evaluation

scholarly journals Carotid artery plaque composition and distribution: near-infrared spectroscopy and intravascular ultrasound analysis

2020 ◽  
Vol 22 (Supplement_F) ◽  
pp. F38-F43
Author(s):  
Martin Horváth ◽  
Petr Hájek ◽  
Cyril Štěchovský ◽  
Jakub Honěk ◽  
Josef Veselka
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Artery ◽  
Intravascular Ultrasound ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Distal Region ◽  
Proximal Region ◽  
Carotid Artery Plaque ◽  
Lipid Core ◽  
Luminal Area

Abstract Most atherosclerotic plaques (APs) form in typical predilection areas of low endothelial shear stress (ESS). On the contrary, previous data hinted that plaques rupture in their proximal parts where accelerated blood flow causes high ESS. It was postulated that high ESS plays an important role in the latter stages of AP formation and in its destabilization. Here, we used near-infrared spectroscopy (NIRS) to analyse the distribution of lipid core based on the presumed exposure to ESS. A total of 117 carotid arteries were evaluated using NIRS and intravascular ultrasound (IVUS) prior to carotid artery stenting. The point of minimal luminal area (MLA) was determined using IVUS. A stepwise analysis of the presence of lipid core was then performed using NIRS. The lipid core presence was quantified as the lipid core burden index (LCBI) within 2 mm wide segments both proximally and distally to the MLA. The analysed vessel was then divided into three 20 mm long thirds (proximal, middle, and distal) for further analysis. The maximal value of LCBI (231.9 ± 245.7) was noted in the segment localized just 2 mm proximally to MLA. The mean LCBI in the middle third was significantly higher than both the proximal (121.4 ± 185.6 vs. 47.0 ± 96.5, P < 0.01) and distal regions (121.4 ± 185.6 vs. 32.4 ± 89.6, P < 0.01). Lipid core was more common in the proximal region when compared with the distal region (mean LCBI 47.0 ± 96.5 vs. 32.4 ± 89.6, P < 0.01).

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