Three-dimensional determination of gastric ulcer size with laser endoscopy.


:We have developed a new endoscopic system for measuring the three-dimensional structure of the gastric ulcer. The system consists of an argon ion laser generator, a side-viewing endoscope with diffraction grating made of glass fibers, and a graphic processing unit. Via a fiber grating fitted in the tip of the endoscope, about 1600 light spots produced by the diffracted laser beam were projected on to the gastric mucosa. By graphic processing involving the detection of the deviation of the laser spot array on the gastric lesion, the diameter, area, and height or depth of the lesion could be determined. To evaluate the accuracy of the system, the diameter and area of a rubber disc were determined in vitro and in the stomach. A cubic model 10 mm in height was used to evaluate the accuracy of the system in measuring height. Accuracy proved to be satisfactory for clinical use. The course of healing of 6 gastric ulcers treated by histamine receptor antagonist was followed with the system. A linear decrease in diameter and depth of the ulcer was observed.






Yamaguchi M,Okazaki Y,Yanai H,Takemoto T




Has Abstract


1988-09-01 00:00:00












  • Transluminal closure for NOTES: an ex vivo study comparing leak pressures of various gastrotomy and colotomy closure modalities.

    abstract:BACKGROUND AND STUDY AIMS:Transluminal closure is fundamental to the safe introduction of natural orifice transluminal endoscopic surgery (NOTES) into humans. Suture, staples, and clips have been used. We aimed to evaluate the acute strength of various gastrotomy and colotomy closure techniques in an ex vivo porcine mo...


    pub_type: 杂志文章


    authors: Ryou M,Fong DG,Pai RD,Rattner DW,Thompson CC

    更新日期:2008-05-01 00:00:00

  • Cholangioscopic characterization of dominant bile duct stenoses in patients with primary sclerosing cholangitis.

    abstract:BACKGROUND AND STUDY AIMS:Primary sclerosing cholangitis (PSC) is associated with the development of cholangiocarcinoma in up to 10 % of patients. Cholangiography or endoscopic tissue sampling does not reliably distinguish between cholangiocarcinoma and a benign dominant bile duct stenosis. The aim of the present study...


    pub_type: 杂志文章


    authors: Tischendorf JJ,Krüger M,Trautwein C,Duckstein N,Schneider A,Manns MP,Meier PN

    更新日期:2006-07-01 00:00:00

  • In situ carcinoma of the esophagus. Macroscopic study with particular reference to the Lugol test.

    abstract::The results presented here concern the study of in situ cancer and marked dysplasia revealed during the pathological study of 39 specimens removed during esophagogastrectomy for invasive carcinoma of the esophagus. In 12 cases, macroscopic study made it possible to define precisely the macroscopic features of in situ ...


    pub_type: 杂志文章


    authors: Mandard AM,Tourneux J,Gignoux M,Blanc L,Segol P,Mandard JC

    更新日期:1980-03-01 00:00:00

  • Effect of drug-eluting metal stents in benign esophageal stricture: an in vivo animal study.

    abstract:BACKGROUND AND STUDY AIMS:The aim of this study in canines was to investigate the effectiveness and safety of self-expandable metal stents, which were coated with paclitaxel to minimize the tissue response. MATERIALS AND METHODS:14 dogs (5-10 kg) were randomly allocated to two groups. Drug-eluting stents (DES, n = 7) ...


    pub_type: 杂志文章


    authors: Jeon SR,Eun SH,Shim CS,Ryu CB,Kim JO,Cho JY,Lee JS,Lee MS,Jin SY

    更新日期:2009-05-01 00:00:00

  • Laparoscopic diagnosis of mesenteric venous thrombosis.

    abstract::Diagnosis of mesenteric venous thrombosis is almost always delayed, due to the aspecificity of the complaints and the clinical findings, as well as the laboratory investigations. Earlier diagnosis is essential to improve the present grim mortality rate. We report a case of mesenteric venous thrombosis in a 25-year-old...


    pub_type: 杂志文章


    authors: Serreyn RF,Schoofs PR,Baetens PR,Vandekerckhove D

    更新日期:1986-11-01 00:00:00

  • Dilatation of benign esophageal strictures by peroral fiberendoscopic bougienage.

    abstract::A low risk procedure for dilation of esophageal strictures is peroral bougienage under direct endoscopic vision with a flexible fiberscope. First the stricture is inspected using the foreward lens of the fiberscope, and then dilated with conventional bougies according to its nature and size under direct visual control...


    pub_type: 杂志文章


    authors: Huchzermeyer H,Freise J,Becker H

    更新日期:1977-11-01 00:00:00

  • Small-bowel capsule endoscopy diagnoses early and advanced neoplasms in asymptomatic patients with Lynch syndrome.

    abstract:BACKGROUND AND STUDY AIMS:Patients with Lynch syndrome are at increased risk of developing small-bowel adenocarcinoma, which usually has a bad prognosis and needs to be diagnosed early. Our aim was to evaluate the yield of capsule endoscopy and CT enteroclysis in this situation. PATIENTS AND METHODS:We performed a pro...


    pub_type: 杂志文章


    authors: Saurin JC,Pilleul F,Soussan EB,Manière T,D'Halluin PN,Gaudric M,Cellier C,Heresbach D,Gaudin JL,Capsule Commission of the French Society of Digestive Endoscopy (SFED).

    更新日期:2010-12-01 00:00:00

  • Endoscopic diagnosis and treatment of upper gastrointestinal tumors.

    abstract::Early diagnosis, endoscopic differentiation of benign from malignant lesions, and removal of clinically significant tumors are increasingly considered to be major topics of interest in the upper gastrointestinal tract. This interest is mainly due to the development of better imaging tools and new resection techniques ...


    pub_type: 杂志文章,评审


    authors: Deprez PH

    更新日期:2011-11-01 00:00:00

  • A randomized, double-blind, placebo-controlled study to evaluate topical anaesthesia of the pharynx in upper gastrointestinal endoscopy.

    abstract::Reduction of discomfort during diagnostic upper endoscopy may not be desired by patients if the medication has long-lasting and severe after-effects. The present study was designed to examine whether topical anaesthesia of the pharynx without concomitant sedation is of overall benefit to patients undergoing diagnostic...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Hedenbro JL,Ekelund M,Jansson O,Lindblom A

    更新日期:1992-08-01 00:00:00

  • Endoscopic ultrasound-guided fine-needle marking of lymph nodes.

    abstract:BACKGROUND AND STUDY AIMS:No previous studies have evaluated the ability of endoscopic ultrasonography to describe the anatomic location of lymph nodes on the basis of a node-to-node comparison. The aim of this study was to assess the feasibility and safety of a new endoscopic ultrasound (EUS)-guided fine-needle techni...


    pub_type: 杂志文章


    authors: Larsen MH,Fristrup CW,Pless T,Ainsworth AP,Nielsen HO,Hovendal CP,Mortensen MB

    更新日期:2010-02-01 00:00:00

  • An ergonomic analysis of the fulcrum effect in the acquisition of endoscopic skills.

    abstract:BACKGROUND:The loss of three-dimensional visual depth cues has been thought to be the main hindrance to the acquisition of endoscopic skills. However, the "fulcrum effect" of the abdominal wall on the manipulation of instruments has not to our knowledge been previously investigated. METHODS:Subjects with no experience...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Gallagher AG,McClure N,McGuigan J,Ritchie K,Sheehy NP

    更新日期:1998-09-01 00:00:00

  • Prospective study of the effectiveness of percutaneous transhepatic photodynamic therapy for advanced bile duct cancer and the role of intraductal ultrasonography in response assessment.

    abstract:BACKGROUND AND STUDY AIMS:We evaluated the therapeutic effects of percutaneous transhepatic photodynamic therapy (PDT) in patients with advanced bile duct cancer. The utility of intraductal ultrasonography (IDUS) for the assessment of responses and for regular follow up after PDT was also examined. METHODS:Percutaneou...


    pub_type: 临床试验,杂志文章


    authors: Shim CS,Cheon YK,Cha SW,Bhandari S,Moon JH,Cho YD,Kim YS,Lee LS,Lee MS,Kim BS

    更新日期:2005-05-01 00:00:00

  • Performance measures for ERCP and endoscopic ultrasound: a European Society of Gastrointestinal Endoscopy (ESGE) Quality Improvement Initiative.

    abstract::The European Society of Gastrointestinal Endoscopy and United European Gastroenterology present a short list of key performance measures for endoscopic ultrasound (EUS) and endoscopic retrograde cholangiopancreatography (ERCP). We recommend that endoscopy services across Europe adopt the following seven key and one mi...


    pub_type: 杂志文章,实务指引


    authors: Domagk D,Oppong KW,Aabakken L,Czakó L,Gyökeres T,Manes G,Meier P,Poley JW,Ponchon T,Tringali A,Bellisario C,Minozzi S,Senore C,Bennett C,Bretthauer M,Hassan C,Kaminski MF,Dinis-Ribeiro M,Rees CJ,Spada C,Valori R,

    更新日期:2018-11-01 00:00:00

  • Confocal laser scanning fluorescence microscopy for in vivo determination of microvessel density in Barrett's esophagus.

    abstract:BACKGROUND AND STUDY AIMS:Angiogenesis has been reported to be an essential step in the progression of cancers arising from Barrett's esophagus. Confocal laser scanning microscopy (CLM) has the potential to perform in vivo microscopy to detect angiogenesis and determine microvessel density (MVD). We aimed therefore to ...


    pub_type: 杂志文章


    authors: Becker V,Vieth M,Bajbouj M,Schmid RM,Meining A

    更新日期:2008-11-01 00:00:00

  • Ablation of residual Barrett's epithelium after endoscopic resection: a randomized long-term follow-up study of argon plasma coagulation vs. surveillance (APE study).

    abstract:BACKGROUND AND STUDY AIM:It is commonly assumed that ablation of any remaining Barrett's epithelium after endoscopic resection of early Barrett's neoplasia improves outcome by reducing the rate of metachronous lesions, but this has not yet been evaluated in a randomized trial. The aim of this study was to compare argon...


    pub_type: 杂志文章,随机对照试验


    authors: Manner H,Rabenstein T,Pech O,Braun K,May A,Pohl J,Behrens A,Vieth M,Ell C

    更新日期:2014-01-01 00:00:00

  • Erosion and perforation of the biliary tree by plastic biliary endoprostheses.

    abstract::Biliary endoprostheses are increasingly used in the treatment of both benign and malignant pancreaticobiliary disorders. Common bile duct stones are a common clinical problem for which there now exist a range of treatment modalities. Official guidelines in the UK advocate the use of plastic biliary endoprostheses in t...


    pub_type: 杂志文章


    authors: Sinha S,Wardle A,Kalidindi V,Banga N,Stoker DL

    更新日期:2010-09-01 00:00:00

  • Mucinous ductal ectasia: cholangiopancreatographic and endoscopic findings.

    abstract::Mucinous ductal ectasia (MDE) is an uncommon disease characterized by a patulous duodenal papilla extruding mucus, and a pancreatogram showing dilation with amorphous filling defects, communication of the mass with the pancreatic duct, the mass usually being located in the head of the pancreas. We have recently treate...


    pub_type: 杂志文章


    authors: Raijman I,Kortan P,Walden D,Kandel G,Marcon NE,Haber GB

    更新日期:1994-03-01 00:00:00

  • A variant of an accessory common bile duct.

    abstract::While variations of the common bile duct are relatively common, true duplication of the common bile duct is very rare. Such deviation from normal anatomy, if unrecognized, may cause problems during surgical intervention. Here we present a case of a unique variant of an accessory bile duct which arises from the conflue...


    pub_type: 杂志文章


    authors: Leung B,Lai P,Chan A,Chan YL,Lau WY

    更新日期:2000-09-01 00:00:00

  • A new endoscopic balloon for sclerotherapy in active bleeding from esophageal varices.

    abstract::A new balloon for flexible endoscopes has been developed and used in 25 patients with esophageal varices: sclerotherapy was carried out as prophylaxis against rebleeding in 17 cases, and during active hemorrhage in 8 cases. The balloon was shown to be effective in controlling hemorrhage and enabling sclerosing injecti...


    pub_type: 杂志文章


    authors: Sciaretta G,Verri A,Malaguti P

    更新日期:1985-05-01 00:00:00

  • Endoscopic ultrasonography in large gastric folds.

    abstract::Large gastric folds are seen in a great number of benign and malignant conditions. Diagnosis is a clinical challenge because the etiology may be extremely varied and standard biopsies are often inconclusive. The gastric wall is considered thickened at endosonography when it is more than 3.6 mm in width. Different dise...


    pub_type: 杂志文章,评审


    authors: Caletti G,Fusaroli P,Bocus P

    更新日期:1998-08-01 00:00:00

  • Elipse, the first procedureless gastric balloon for weight loss: a prospective, observational, open-label, multicenter study.

    abstract::Background and study aims Conventional gastric balloons for weight loss require endoscopy for placement and removal. The Elipse device is swallowed, resides in the stomach for 4 months, and is then expelled. The objectives of this study were to assess the safety of Elipse and to measure its effects on weight loss, met...


    pub_type: 临床试验,杂志文章,多中心研究


    authors: Machytka E,Gaur S,Chuttani R,Bojkova M,Kupka T,Buzga M,Giannakou A,Ioannis K,Mathus-Vliegen E,Levy S,Raftopoulos I

    更新日期:2017-02-01 00:00:00

  • Endoscopic vs. laparoscopic gastrojejunostomy for duodenal obstruction: a randomized study in a porcine model.

    abstract:BACKGROUND AND STUDY AIMS:Open or laparoscopic gastrojejunostomy is an established treatment for malignant duodenal obstruction but may be associated with significant morbidity and mortality. The purpose of this study was to develop a model for an entirely endoscopic gastrojejunostomy to treat duodenal obstruction, and...


    pub_type: 杂志文章


    authors: von Renteln D,Vassiliou MC,McKenna D,Suriawinata AA,Swain CP,Rothstein RI

    更新日期:2012-02-01 00:00:00

  • Clinical features and outcomes of delayed perforation after endoscopic submucosal dissection for early gastric cancer.

    abstract::Perforation is a major complication of endoscopic submucosal dissection (ESD) for early gastric cancer (EGC). However, there have been no reports on delayed perforation after ESD for EGC. We aimed to elucidate the incidence and outcomes of delayed perforation after ESD. Clinical courses in 1159 consecutive patients wi...


    pub_type: 杂志文章


    authors: Hanaoka N,Uedo N,Ishihara R,Higashino K,Takeuchi Y,Inoue T,Chatani R,Hanafusa M,Tsujii Y,Kanzaki H,Kawada N,Iishi H,Tatsuta M,Tomita Y,Miyashiro I,Yano M

    更新日期:2010-12-01 00:00:00

  • A randomized prospective trial comparing unsedated esophagoscopy via transnasal and transoral routes using a 4-mm video endoscope with conventional endoscopy with sedation.

    abstract:BACKGROUND AND STUDY AIMS:Unsedated upper endoscopy is an attractive alternative to conventional sedated endoscopy because it can reduce the cost, complications, and recovery time of the procedure. However, it has not gained widespread acceptance in the United States. A prototype 4-mm-diameter video esophagoscope is av...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Thota PN,Zuccaro G Jr,Vargo JJ 2nd,Conwell DL,Dumot JA,Xu M

    更新日期:2005-06-01 00:00:00

  • Does passage of a patency capsule indicate small-bowel patency? A prospective clinical trial?

    abstract:BACKGROUND AND STUDY AIMS:At many centers wireless capsule endoscopy (WCE) without prior radiographic examination to rule out relevant strictures is considered to be contraindicated in suspected obstructive small-bowel disease. However, the accuracy of radiography in this situation has often been questioned. The purpos...


    pub_type: 杂志文章


    authors: Boivin ML,Lochs H,Voderholzer WA

    更新日期:2005-09-01 00:00:00

  • Diagnosis of esophagogastric tumors.

    abstract::The incidence of esophageal tumors, and of adenocarcinoma in particular, has risen markedly in recent years in the developed countries. The use of a variety of histopathological and biological markers is now offering promising prospects for the future. Vertical tumor invasion, intratumoral microvessel density, antimuc...


    pub_type: 杂志文章,评审


    authors: Moretó M

    更新日期:2001-01-01 00:00:00

  • Capsule endoscopy in patients with suspected Crohn's disease and negative endoscopy.

    abstract:BACKGROUND AND STUDY AIMS:The aim of the present study was to assess the value of capsule endoscopy in the diagnostic work-up of patients in whom there is a clinical suspicion of small bowel Crohn's disease that cannot be confirmed using traditional techniques. PATIENTS AND METHODS:A total of 21 patients (14 men, seve...


    pub_type: 杂志文章


    authors: Herrerías JM,Caunedo A,Rodríguez-Téllez M,Pellicer F,Herrerías JM Jr

    更新日期:2003-07-01 00:00:00

  • Early detection of recurrent hepatocellular carcinoma by endosonographically guided fine-needle aspiration biopsy.

    abstract::Fine-needle aspiration guided by endoscopic ultrasonography (EUS) has shown promising results in establishing the cytological diagnosis of lesions identified during endoscopic ultrasound examinations. We report here on a case of recurrent hepatocellular carcinoma diagnosed by EUS-guided biopsy in which curative resect...


    pub_type: 杂志文章


    authors: Bogstad J,Vilmann P,Burcharth F

    更新日期:1997-05-01 00:00:00

  • Comments on "Combined endoscopic submucosal dissection and transanal minimally invasive surgery for resection of large refractory rectal polyp".

    abstract:: ...


    pub_type: 评论,杂志文章


    authors: Valdes-Hernandez J

    更新日期:2019-03-01 00:00:00

  • Current sedation and monitoring practice for colonoscopy: an International Observational Study (EPAGE).

    abstract:BACKGROUND AND STUDY AIMS:Sedation and monitoring practice during colonoscopy varies between centers and over time. Knowledge of current practice is needed to ensure quality of care and help focus future research. The objective of this study was to examine sedation and monitoring practice in endoscopy centers internati...


    pub_type: 杂志文章,多中心研究


    authors: Froehlich F,Harris JK,Wietlisbach V,Burnand B,Vader JP,Gonvers JJ,EPAGE Study Group.

    更新日期:2006-05-01 00:00:00