Ikue Noda
Hiroshima University
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Publication
Featured researches published by Ikue Noda.
Gastrointestinal Endoscopy | 2011
Hiroki Imagawa; Shiro Oka; Shinji Tanaka; Ikue Noda; Makoto Higashiyama; Youji Sanomura; Takayoshi Shishido; Shigeto Yoshida; Kazuaki Chayama
BACKGROUND We can now enhance video capsule endoscopy (CE) images in real time by means of a flexible spectral imaging color enhancement (FICE) digital processing system. Reports on the clinical usefulness of this system are few. OBJECTIVE To clarify whether visualization of lesions of the small intestine is improved by FICE image analysis. DESIGN A retrospective study. SETTING Academic medical center. METHODS Five physicians compared FICE images with corresponding conventional images of 145 lesions obtained from 122 patients who underwent video CE at our hospital. The lesions were classified as angioectasia (n=23), erosion/ulceration (n=45), or tumor (n=75), and 3 different sets of FICE images were viewed (ie, at 3 different wavelength settings). Physicians rated the visibility of the lesions on FICE images as follows: +2 (improved visibility), +1 (somewhat improved visibility), 0 (visibility equivalent to that of conventional video CE visibility), -1 (somewhat decreased visibility), and -2 (decreased visibility). Scores for each lesion were totaled (per FICE setting) and evaluated. Intraobserver agreement was also examined. RESULTS With FICE setting 1 (red 595 nm, green 540 nm, blue 535 nm), improvement was achieved for 87% (20/23) of angioectasia images, 53.3% (26/47) of erosion/ulceration images, and 25.3% (19/75) of tumor images. With setting 2 (red 420 nm, green, 520 nm, blue 530 nm), improvement was achieved for 87% (20/23), 25.5% (12/47), and 20.0% (15/75), respectively. With setting 3, only equivalence was achieved. Intraobserver agreement was good to satisfactory at 5.4 or higher. LIMITATIONS Single-center study. CONCLUSIONS CE-FICE improves visibility of small-bowel angioectasia, erosion/ulceration, and tumor.
Scandinavian Journal of Gastroenterology | 2011
Hiroki Imagawa; Shiro Oka; Shinji Tanaka; Ikue Noda; Makoto Higashiyama; Youji Sanomura; Takayoshi Shishido; Shigeto Yoshida; Kazuaki Chayama
Abstract Objective. Real-time video capsule endoscopy (CE) with flexible spectral imaging color enhancement (FICE) improves visibility of small-bowel lesions. This article aims to clarify whether CE-FICE also improves detectability of small-bowel lesions. Patients and methods. A total of 55 patients who underwent CE at Hiroshima University Hospital during the period November 2009 through March 2010 were enrolled in the study. Five patients were excluded from the study because residues and transit delays prevented sufficient evaluation. Thus, 50 patients participated. Two experienced endoscopists (each having interpreted more than 50 capsule videos) analyzed the images. One interpreted conventional capsule videos; the other, blinded to interpretation of the conventional images, interpreted CE-FICE images obtained at settings 1–3 (setting 1: red 595 nm, green 540 nm, blue 535 nm; setting 2: red 420 nm, green 520 nm, blue 530 nm; setting 3: red 595 nm, green 570 nm, blue 415 nm). Lesions were classified as angioectasia, erosion, ulceration, or tumor. Detectability was compared between the two modalities. Time taken to interpret the capsule videos was also determined. Results. Seventeen angioectasias were identified by conventional CE; 48 were detected by CE-FICE at setting 1, 45 at setting 2, and 24 at setting 3, with significant differences at settings 1 and 2 (p = 0.0003, p < 0.0001, respectively). Detection of erosion, ulceration, and tumor did not differ statistically between conventional CE and CE-FICE, nor did interpretation time (conventional CE 36 ± 6.9 min; CE-FICE setting 1, 36 ± 6.4 min; setting 2, 38 ± 5.8 min; setting 3, 35 ± 6.7 min). Conclusions. CE-FICE is superior in the lesion detection in comparison with conventional CE and improves detection of angioectasia.
Inflammatory Bowel Diseases | 2009
Chiyuki Watanabe; Masaaki Sumioka; Tomoki Hiramoto; Ikue Noda; Sayaka Oba; Morihisa Akagi; Mikiya Kitamoto; Hiroyasu Yamada; Masaru Imagawa
Background: Many patients with quiescent ulcerative colitis (UC) experience relapse. However, clinical and conventional colonoscopic signs are inadequate for predicting relapse. This studys aim was to investigate the effectiveness of magnifying colonoscopy in predicting relapse in patients with quiescent UC and to evaluate the association of the findings of magnifying colonoscopy with the histological findings. Methods: Magnifying colonoscopy was performed in 57 patients with clinical and endoscopic inactive UC. Patients were divided into 3 groups according to the findings of magnifying colonoscopy as MR (magnify‐regular), MI (magnify‐irregular), and MD (magnify‐defect). Their subsequent clinical course was compared to assess the clinical usefulness of magnifying observation in predicting relapse. We also compared histological findings according to Rileys criteria to each finding of magnifying colonoscopy. Results: Within 12 months, 1 of 18 patients (6.7%), 10 of 22 patients (45.5%), and 12 of 17 patients (70.6%) with findings of magnifying colonoscopy of MR, MI, and MD, respectively, experienced relapse. The MR group had a significantly low relapse rate compared with the MD and MI groups (P = 0.016, P = 0.002). When histological findings were compared with the findings of magnifying colonoscopy, the mean score of each variable, such as acute inflammatory cell infiltrate, chronic inflammatory cell infiltrate, and crypt architectural irregularities was significantly lower in the MR group than in the MD and MI groups. Conclusions: The findings of magnifying colonoscopy in patients with quiescent UC is useful for predicting relapse and is associated with histological grade of inflammation. Inflamm Bowel Dis 2009
Gastric Cancer | 2012
Yoji Sanomura; Shiro Oka; Shinji Tanaka; Ikue Noda; Makoto Higashiyama; Hiroki Imagawa; Takayoshi Shishido; Shigeto Yoshida; Toru Hiyama; Koji Arihiro; Kazuaki Chayama
Journal of Gastroenterology | 2010
Ikue Noda; Mikiya Kitamoto; Hideki Nakahara; Ryohei Hayashi; Tomoaki Okimoto; Yoshio Monzen; Hiroyasu Yamada; Masaru Imagawa; Nobuhiko Hiraga; Junko Tanaka; Kazuaki Chayama
Kanzo | 2009
Ryohei Hayashi; Mikiya Kitamoto; Ikue Noda; Chiyuki Watanabe; Hiroyasu Yamada; Masaru Imagawa; Yoko Matsumoto; Mio Tanaka; Michiyo Kodama; Tomoki Hiramoto; Morihisa Akagi; Masaaki Sumioka; Takashi Nishisaka
Gastrointestinal Endoscopy | 2011
Shiro Oka; Shinji Tanaka; Yoji Sanomura; Makoto Higashiyama; Hiroki Imagawa; Ikue Noda; Shigeto Yoshida; Kazuaki Chayama
Pancreas | 2009
Ikue Noda; Hiroyasu Yamada; Ryohei Hayashi; Wakako Harada; Tomoki Hiramoto; Morihisa Akagi; Chiyuki Watanabe; Mikiya Kitamoto; Masaaki Sumioka; Masaru Imagawa
Kanzo | 2009
Mio Kawakami; Mikiya Kitamoto; Ikue Noda; Ryohei Hayashi; Mio Tanaka; Yoko Matsumoto; Hiroyasu Yamada; Masaaki Sumioka; Masaru Imagawa; Tomonori Murakami; Tomoaki Okimoto; Keiji Nagata
Kanzo | 2007
Toshiko Onitake; Mikiya Kitamoto; Ikue Noda; Hiroyasu Yamada; Masaaki Sumioka; Masaru Imagawa; Takashi Nishisaka; Tomoaki Okimoto; Toshio Monzen; Ken Hirao; Takashi Sugita