Comparative trial of diagnositic ability for colorectal tumor of Narrow band imaging (NBI), Blue laser imaging (BLaI) and Blue light imaging (BLiI)

Comparative trial of diagnositic ability for colorectal tumor of Narrow band imaging (NBI), Blue laser imaging (BLaI) and Blue light imaging (BLiI) - Comparative trial of diagnositic ability for colorectal tumor of NBI, BLaI and BLiI

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000032107

Enrollment

300

Registered

2018-04-04

Start date

2018-04-04

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colorectal tumor

Interventions

Diagnose colorectal tumor with NBI(Narrow band imaging) Diagnose colorectal tumor with BLaI(Blue laser imaging) Diagnose colorectal tumor with BLiI(Blue light imaging)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Scheduled for endoscopic resection for colorectal tumor

Exclusion criteria

Exclusion criteria: Patients judged inappropriate for the trial by investigators

Design outcomes

Primary

Measure	Time frame
Precise diagnosis rate of NBI, BLaI and BLiI for colorectal polyps	—

Secondary

Measure	Time frame
Colorectal tumor is diagnosed to Type1,Type2,Type3 according to NICE(NBI International Colorectal Endoscopic)classification and to Type1,Type2A,Type2B,Type3 according to JNET(Japan NBI expert team)classification (1)Sensitivity, secificity, PPV, NPV for non neoplastic and neoplastic tumor (2)Sensitivity, secificity, PPV, NPV for SM deep invasion tumor and CIS, SM sligt invasion tumor	—

Countries

Japan

Contacts

Public ContactTakuma Higurashi

Yokohama City University Department of Gastroenterology and Hepatology

takuma_h@yokohama-cu.ac.jp045-787-2640

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026