1. Kiyoshi Yoshida

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    1. Mentioned In 17 Articles

    2. Longitudinal Changes in Retinal Blood Flow in a Feline Retinal Vein Occlusion Model as Measured by Doppler Optical Coherence Tomography and Optical Coherence Tomography Angiography

      Longitudinal Changes in Retinal Blood Flow in a Feline Retinal Vein Occlusion Model as Measured by Doppler Optical Coherence Tomography and Optical Coherence Tomography Angiography
      Purpose : We aimed to observe longitudinal changes in retinal blood flow (RBF) and structural transformations in capillaries using Doppler optical coherence tomography (DOCT) and optical coherence tomography angiography (OCTA) in a feline retinal blood occlusion (RVO) model. Methods : RVO was induced by argon green laser photocoagulation (PC) in six eyes of six cats. RBF was measured at a first-order retinal artery and vein by a DOCT flowmeter, and structural changes ...
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    3. Impact of stent platform on longitudinal stent deformation: an in vivo frequency domain optical coherence tomography study

      Impact of stent platform on longitudinal stent deformation: an in vivo frequency domain optical coherence tomography study
      Recently, longitudinal coronary stent deformation has been highlighted as a possible cause of drug-eluting stent failure. Although bench tests and in vivo studies have demonstrated difference in longitudinal stent strength among the stents with different platforms, its clinical impact is still unknown. Furthermore, it is unknown if modified stent platform favorably affect the incidence of stent deformation. The aim of this study was to investigate the longitudinal deformation of the ...
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    4. High Platelet Reactivity and Intrastent Thrombi Assessed by OCT After DES

      High Platelet Reactivity and Intrastent Thrombi Assessed by OCT After DES
      High platelet reactivity (HPR) on clopidogrel may be related to stent thrombosis after drug-eluting stent (DES) implantation (1) . To investigate the relationship between HPR and intrastent thrombi following DES implantation, 202 lesions treated with DES from 109 patients were studied. Coronary angiography and optical coherence tomography (OCT) examination were performed as parts of routine follow-up examination at our institution except for the presence of renal dysfunction or congestive heart failure ...
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    5. Calcified plaque ablated by rotational atherectomy visualised by optical coherence tomography

      Calcified plaque ablated by rotational atherectomy visualised by optical coherence tomography
      This paper also includes accompanying supplementary data published online at: http://www.pcronline.com/eurointervention/86th_issue/62 Calcification is visualised by optical coherence tomography (OCT) as a well-delineated, signal-poor region with sharp borders. A 63-year-old female patient with stable angina underwent percutaneous coronary intervention. OCT (C7 Dragonfly, ILUMIEN OCT system; St. Jude Medical, St. Paul, MN, USA) showed lumen narrowing with heavily calcified plaque (Figure 1A) . Rotational atherectomy (RA) was ...
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    6. Patency of small laser iridotomy evaluated using anterior-segment optical coherence tomography

      Patency of small laser iridotomy evaluated using anterior-segment optical coherence tomography
      We report the case of a patient with recurrent acute angle-closure glaucoma who had undergone a previous laser iridotomy. Because the initial iridotomy was small, patency could not be determined by slit-lamp examination. Therefore, anterior-segment optical coherence tomography was used to evaluate the patency. Cross-sectional images showed the presence of a membrane with an anterior bowing configuration at the base of the iridotomy, suggesting that recurrent pupillary block was the ...
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    7. A unique feature of thin flat thrombus visualised by optical coherence tomography

      A unique feature of thin flat thrombus visualised by optical coherence tomography
      Optical coherence tomography (OCT) has recently been developed as a high-resolution intravascular imaging modality, detecting small abnormal structures in the coronary lumen that could not be visualised by intravascular ultrasound (IVUS). A 77-year-old man died with acute myelogenous leukemia. After he died, the coronary artery was imaged by OCT (ImageWire; LightLab Imaging, Westford, MA, USA) and IVUS (Atlantis SR Pro, 40 MHz; Boston Scientific, Natick, MA, USA). OCT clearly demonstrated ...
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    8. Unusual peri-stent strut contrast staining 6 years after sirolimus-eluting stent implantation: an “ant colony-like” appearance

      Unusual peri-stent strut contrast staining 6 years after sirolimus-eluting stent implantation: an “ant colony-like” appearance
      A 60-year-old man with a previous history of sirolimus-eluting stent implantation was admitted because of chest pain. Coronary angiography revealed nonsignificant in-stent luminal narrowing at the previously stented segment with an unusual linear peri-stent strut contrast staining. Frequency-domain optical coherence tomography showed a cavity at the segment connecting to the coronary lumen at the distal part of the stent. This unusual ant-colony-like appearance of the stented segment may be a ...
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    9. Optical tomographic imaging apparatus and control method for the same

      Optical tomographic imaging apparatus and control method for the same
      There is provided an optical tomographic imaging apparatus for imaging a tomographic image capable of setting characteristics of an optical system to accommodate to different positions on an object. The apparatus using an OCT system, includes: a scanning device for scanning measuring beams, an irradiating device for irradiating a different irradiation area on the object with the measuring beams scanned by the scanning device, an adjusting device for adjusting an ...
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    10. Natural History of Stent Edge Dissection, Tissue Protrusion and Incomplete Stent Apposition Detectable Only on Optical Coherence Tomography After Stent Implantation

      Natural History of Stent Edge Dissection, Tissue Protrusion and Incomplete Stent Apposition Detectable Only on Optical Coherence Tomography After Stent Implantation
      Background: The clinical impact of stent edge dissection, tissue protrusion, and incomplete stent apposition (ISA) after stent implantation, detectable only on optical coherence tomography (OCT), is still unknown because the natural course has not been investigated. Methods and Results: All consecutive patients with angina pectoris in whom both intravascular ultrasound (IVUS) and OCT were performed immediately after stenting and at follow-up were included in the present study. The natural history ...
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    11. Relationship Between Arterial and Fibrous Cap Remodeling: A Serial Three-Vessel Intravascular Ultrasound and Optical Coherence Tomography Study

      Relationship Between Arterial and Fibrous Cap Remodeling: A Serial Three-Vessel Intravascular Ultrasound and Optical Coherence Tomography Study
      ... MD; Noriko Okahashi, MD; Kikuko Obase, MD; Akihiro Hayashida, MD; Yoji Neishi, MD; Takahiro Kawamoto, MD and Kiyoshi Yoshida, MD From the Division of Cardiology (R.Y., H.O., K.S., Y.M., K.I., T.T., T.M., N.O., K.O., A.H...
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    12. Frequency and Spatial Distribution of Thin-Cap Fibroatheroma Assessed by 3-Vessel Intravascular Ultrasound and Optical Coherence Tomography: An Ex Vivo Validation and an Initial In Vivo Feasibility Study

      Frequency and Spatial Distribution of Thin-Cap Fibroatheroma Assessed by 3-Vessel Intravascular Ultrasound and Optical Coherence Tomography: An Ex Vivo Validation and an Initial In Vivo Feasibility Study
      Background: The precursor of plaque rupture is known as thin cap fibroatheroma (TCFA). In the present study, the feasibility and accuracy of optical coherence tomography (OCT) for detecting the frequency and spatial distribution of TCFA was investigated ex vivo, and a 3-vessel OCT analysis was conducted to assess the feasibility of this modality in vivo. Methods and Results: In the ex vivo study, 108 coronary arterial segments from 38 human ...
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    13. Optical coherence tomography after cutting balloon angioplasty

      Optical coherence tomography (OCT) is a recently developed optical imaging technique that provides high-resolution (approximately 10–20 µm) cross-sectional images of vessels. A 74-year-old man was admitted for chest pain. A coronary angiogram showed diffuse in-stent restenosis of an Express (Boston Scientific Corporation and Medinol Ltd) 2.75 x 15 mm stent which had been implanted in the left anterior descending coronary artery six months earlier (panel A; arrow). Using ...
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  2. About Kiyoshi Yoshida

    Kiyoshi Yoshida is a cardiologist in the Department of Cardiology at the Kawasaki Medical School in Kurashiki, Japan.