Evaluation of Annuloaortic Ectasia by Angioscopy and IVUS “Report of 2 cases”

Tokuhiro, Keiichi; Uchida, Yasumi; Kawamura, K; Sakuragawa, Hiroshi; Masuhara, Hiroshi; Oosawa, Hidefumi; Koyama, Nobuya

doi:10.1155/dte.7.35

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…To address these issues, direct endoluminal optical visualization or angioscopy has been proposed as an adjuvant imaging modality since the 1980s 1 and has been used to visualize the human aorta, 2 , 3 coronary 4 and peripheral 5 arteries, as well as therapies such as carotid 6 and coronary 7 angioplasty. Angioscopy has also been used to observe the placement of intravascular occlusion coils and stents in the carotid arteries of porcine and canine animal models, 8 as well as to assess the completeness of clip occlusion in a canine aneurysm model.…”

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High-Resolution Angioscopic Imaging During Endovascular Neurosurgery

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High-Resolution Angioscopic Imaging During Endovascular Neurosurgery

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“…The aorta was examined by Uchida et al, 22) Hill et al, 23) Tokuhiro et al, 24) Tsagakis et al, 25) among others. 26) Peripheral veins were examined by Hoshino et al, 27) Yamaki et al, 28) Nishibe et al, 29) Konami et al, 30) among others.…”

Section: Percutaneous Angioscopy (As) Is a High Resolution Fiberopticmentioning

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Combined Use of Angioscopy and Intravascular Ultrasonography for Diagnosis and Evaluation of Surgical Repair of Aortic Disease

Uchida¹

2019

Angioscopy

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Angioscopy (AS) and intravascular ultrasonography (IVUS) enable pathological diagnosis of vascular interior and visualization of vascular wall architecture, respectively, and therefore these techniques in combination may give us much information on vascular disease. But, these techniques in combination have been rarely used for diagnosis and evaluation of surgical repair of large vessels. Systematic review on the combined use of AS and IVUS for vascular disease, except those of the coronary arteries, has rarely been published in the literature, so we have described developmental history of AS, and AS and IVUS images of aortic disease before and after surgical therapy that were obtained mostly in our laboratory. Usually, AS system is composed of a 4.5F fiberscope and 9F balloon guide catheter and IVUS system is composed of a 9F, 12 or 20 MHz, 20 CPS probe. They are introduced into the aorta for diagnosis of aortic aneurysm and evaluation of their surgical repair in patients. Recent important findings are as follows: (1) Entry and re-entry of dissecting aortic aneurysm were easily identified by IVUS and entry was frequently found by AS in yellow plaques. Thrombus formation was found by AS in the aortic arch graft, suggesting the necessity of anticoagulant therapy after repair for prevention of cerebral embolism. (2) Disrupted plaques and thrombi were observed by IVUS in the aneurysm, which were frequently not detectable by computed tomography or aortography, in patients with saccular abdominal aortic aneurysm. Fresh and old thrombus in mixture were frequently observed by AS, suggesting recurrent thrombus formation. Incomplete neo-endothelial coverage of the Y-graft even 6 months after grafting and detached threads at the sutured portion were found by AS but not by IVUS. Pseudoaneurysm at the sutured portion was confirmed by AS and IVUS in combination. AS and IVUS in combination give us much information on structural and pathological changes and evaluation of surgical repair of aortic disease.

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“…The aorta was examined by [22], Hill (1995) [23] Tokuhiro (2000) [24], Tsagakis (2010) [25], Aono (2007) [26], among others.…”

Section: Overview Of Literature On Angioscopy (As)mentioning

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Advances in Angioscopic Imaging of Vascular Disease

Uchida¹,

Uchida²

2012

WJCS

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Percutaneous angioscopy, using high resolution fiberoptic imaging, allows direct and two-dimensional visualization of the vascular interior, thereby enabling macroscopic pathological diagnosis. Percutaneous angioscopy has revealed that the vascular luminal surface exhibits various colors and morphologies characteristic of different vascular diseases. This imaging technique is used for evaluation of the severity of vascular diseases, staging of atherosclerosis, analysis of thrombus composition, evaluation of interventional and surgical therapies, and for guidance of intravascular interventions such as angioplasty, venous valvuloplasty and aortic stentgrafting. Recently, dye-image angioscopy has been used clinically for analyses of thrombus composition, endothelial damage and plaque composition. Intravascular microscopy was also developed for cellular imaging of vascular disease. Furthermore, fluorescent angioscopy was developed for molecular imaging of substances comprising atherosclerotic plaques. In this article, we describe the history of the development of angioscopy, angioscopic systems and techniques, angioscopic changes associated with vascular diseases, angioscope-guided intravascular therapies, and evaluation of intravascular and surgical therapies. Angioscopic pictures, except those of the coronary arteries, have rarely been published in the literature, so we have included many representative angioscopic pictures obtained by the authors in this article.

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Evaluation of Annuloaortic Ectasia by Angioscopy and IVUS “Report of 2 cases”

Cited by 5 publications

References 6 publications

High-Resolution Angioscopic Imaging During Endovascular Neurosurgery

High-Resolution Angioscopic Imaging During Endovascular Neurosurgery

Combined Use of Angioscopy and Intravascular Ultrasonography for Diagnosis and Evaluation of Surgical Repair of Aortic Disease

Advances in Angioscopic Imaging of Vascular Disease

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