[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100634610":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":18,"centralContacts":24,"locations":30,"responsibleParty":47,"collaborators":18,"id":51,"slug":52,"hasResults":53,"nctId":54,"briefTitle":55,"officialTitle":55,"acronym":56,"eligibilityCriteria":57,"healthyVolunteers":58,"sex":59,"minAge":60,"maxAge":61,"enrollmentInfo":62,"targetDuration":18,"studyType":65,"phases":66,"briefSummary":68,"conditions":69,"keywords":74,"overallStatus":32,"whyStopped":18,"lastUpdateSubmitDate":79,"lastUpdatePostDateStruct":80,"startDateStruct":83,"completionDateStruct":85,"leadSponsor":87,"locationsCount":88},{"fullName":5,"class":6},"Peking Union Medical College Hospital","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Image-Assisted Colonoscopy","EXPERIMENTAL","Participants undergo colonoscopy with pre-procedural review of their existing abdominal\u002Fpelvic CT scan (≤5 years).\n\nEndoscopists complete a standardized imaging assessment form including predicted redundancy, looping type, tortuosity, and segmental laxity.\n\nNo additional imaging is performed.",[13],"Other: CT-Based Image-Assisted Colonoscope Insertion",{"label":15,"type":16,"description":17,"interventionNames":18},"Standard Colonoscopy","NO_INTERVENTION","Participants undergo colonoscopy per routine clinical practice without CT-based anticipatory guidance.",null,[20],{"type":6,"name":21,"description":22,"armGroupLabels":23,"otherNames":18},"CT-Based Image-Assisted Colonoscope Insertion","This intervention uses pre-existing abdominal or pelvic CT imaging (within 5 years, without major abdominal surgery) to assess individual colonic morphology prior to colonoscopy. Key CT-derived features include colonic redundancy, looping patterns, fixation points, and segmental angulation. Based on these findings, the endoscopist receives a structured, standardized briefing before colonoscope insertion, including predicted difficult segments and recommended insertion strategies. No additional imaging, radiation, or invasive procedures are used. The intervention aims to improve insertion efficiency, reduce patient discomfort, and lower operator workload compared with standard colonoscopy without image guidance.",[9],[25],{"name":26,"role":27,"phone":28,"phoneExt":18,"email":29},"Kun He, MD","CONTACT","15901623698","hk6290418@163.com",[31],{"facility":5,"status":32,"city":33,"state":34,"zip":35,"country":36,"countryCode":37,"cosmosGeoPoint":38,"geoPoint":43,"contacts":44},"RECRUITING","Beijing","Beijing Municipality","100730","China","CN",{"type":39,"coordinates":40},"Point",[41,42],116.39723,39.9075,{"lat":42,"lon":41},[45],{"name":46,"role":27,"phone":18,"phoneExt":18,"email":18},"Dong Wu, M.D.",{"type":48,"investigatorFullName":49,"investigatorTitle":50,"investigatorAffiliation":5,"oldNameTitle":18,"oldOrganization":18},"SPONSOR_INVESTIGATOR","DONG WU","Professor of Medicine","100634610","the-impact-of-image-assisted-colonoscope-on-patient-experience-physician-workload-and-examination-quality-100634610",false,"NCT07541924","The Impact of Image-Assisted Colonoscope on Patient Experience, Physician Workload, and Examination Quality","LOOP-p1","Inclusion Criteria:\n\n* Age 18-80 years, or expected natural survival \\>3 years\n* Undergoing colonoscopy at Peking Union Medical College Hospital\n* Presence of an abdominal\u002Fpelvic CT scan performed within ≤5 years and no - - - major abdominal surgery afterward\n* Patient or legal guardian able to understand the study and provide written consent\n\nExclusion Criteria:\n\n* No available CT or CT quality insufficient for anatomical evaluation\n* Prior colonic surgery affecting anatomy (e.g., right hemicolectomy, transverse colectomy)\n* Severe cardiopulmonary dysfunction or coagulopathy\n* Pregnancy\n* Refusal to participate or inability to complete questionnaires\n* Patient or guardian unable to understand study requirements",true,"ALL","18 Years","80 Years",{"count":63,"type":64},200,"ESTIMATED","INTERVENTIONAL",[67],"NA","Colonoscopy is the cornerstone for colorectal cancer screening, diagnosis, and post-treatment surveillance. Procedural quality is influenced by patient anatomy, particularly variations in colonic configuration such as sigmoid redundancy, looping, and low-lying transverse colon. These features prolong insertion time, increase patient discomfort, and elevate physician workload.\n\nEvidence suggests that prior CT imaging can provide objective and individualized information on colonic anatomy-such as redundancy, angulation, and tortuosity-potentially predicting procedural difficulty. However, existing studies are mainly retrospective or descriptive, lacking prospective randomized evidence on clinical utility.\n\nThis single-blind, randomized controlled trial evaluates whether image-assisted colonoscope insertion, based on pre-existing abdominal\u002Fpelvic CT scans, can improve cecal intubation time, enhance patient experience, reduce operator workload, and improve overall examination quality compared with standard colonoscopy.",[70,71,72,73],"Colorectal Cancer Screening","Colonic Polyps\u002FColonoscopy\u002FColorectal Neoplasms","Difficult Colonoscopy","Colonoscopy-Related Discomfort",[75,76,77,9,78],"Colonoscopy","Cecal Intubation Time","Looping","Personalized Colonoscopy","2026-04-14",{"date":81,"type":82},"2026-04-21","ACTUAL",{"date":84,"type":82},"2025-12-09",{"date":86,"type":64},"2026-05-28",{"name":49,"class":6},1]