Related Experiment Video
Updated: May 6, 2026
Cerenkov Luminescence Imaging CLI for Cancer Therapy Monitoring
Published on: November 13, 2012
Radiation-based indicators for ERCP quality evaluation
Grecia C Celis-Valenzuela1, Raúl A Jiménez-Castillo1, Luis A González-Torres1
1Gastroenterology and Endoscopy Service, "Dr. José E. González" University Hospital, Universidad Autónoma de Nuevo León, Monterrey, NL, Mexico.
Objective:
Radiation exposure during ERCP lacks validated cut-off values as quality indicators (QIs). We propose using fluoroscopy time (FT) and radiation dose (RD) cut-off points as surrogate measures of radiation exposure to identify low-risk procedures.
Patients And Methods:
Retrospective study of 1328 consecutive ERCPs. We constructed a composite reference standard outcome (ERCP complications and ASGE grade 3 procedures). We performed receiver operating characteristic (ROC) curves to identify optimal FT and RD thresholds for the composite outcome. Secondary objectives evaluated differences between FT and RD, across trainees and experts, and by ERCP complexity grade.
Results:
The optimal cut-off value for FR and RD was >4.32min (AUC 0.672, 95% CI 0.65-0.7; p<0.001, Youden Index 0.3) and >32.5mGy (AUC 0.683, 95% CI 0.657-0.708; p<0.001, Youden Index 0.28), respectively; their negative predictive values were 89.2 and 88.7% respectively.
Conclusions:
FT and RD are reproducible QIs for ERCP that may help identify low-risk procedures and may function as new academic and standardized objectives.
More Related Videos
06:21Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model
Published on: May 27, 2016
06:20Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
