Thomas M Goodsall1,2, Tran M Nguyen3, Claire E Parker3, Christopher Ma3,4, Jane M Andrews2,5, Vipul Jairath3,6, Robert V Bryant1,2. 1. Department of Gastroenterology, The Queen Elizabeth Hospital, Adelaide, Australia. 2. Faculty of Health Sciences, School of Medicine, University of Adelaide, Adelaide, Australia. 3. Robarts Clinical Trials, Inc. London, Ontario, Canada. 4. Division of Gastroenterology and Hepatology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada. 5. Department of Gastroenterology and Hepatology, Royal Adelaide Hospital, Adelaide, Australia. 6. Division of Gastroenterology, Department of Medicine, Western University, London, Ontario, Canada.
Abstract
BACKGROUND AND AIMS: Serial measurements of luminal disease activity may facilitate inflammatory bowel disease management. Gastrointestinal ultrasound is an easily performed, non-invasive alternative to other assessment modes. However, its widespread use is limited by concerns regarding validity, reliability, and responsiveness. We systematically identified ultrasound scoring indices used to evaluate inflammatory bowel disease activity and examine their operating characteristics. METHODS: Electronic databases were searched from inception to June 14, 2019 using pre-defined terms. Studies that reported on gastrointestinal ultrasound index operating properties in an inflammatory bowel disease population were eligible for inclusion. Study characteristics, index components, and operating property (i.e., validity, reliability, responsiveness, sensitivity, specificity, accuracy, positive predictive value, and negative predictive value) data were extracted. The QUADAS-2 tool was used to examine study-level risk of bias. RESULTS: Of the 2610 studies identified, 26 studies reporting on 21 ultrasound indices were included. The most common index components included bowel wall thickness, colour Doppler imaging, and bowel wall stratification. The correlation between ultrasound indices and references standards ranged from r=0.62-0.95 and k=0.40-0.96. Sensitivity, specificity, accuracy, positive predictive value, and negative predictive values ranged from 39%-100%, 63%-100%, 73%-100%, 57%-100%, and 40%-100%, respectively. Reliability and responsiveness data were limited. Most (92%, 24/26) studies received at least one unclear or high risk of bias rating. CONCLUSIONS: Several gastrointestinal ultrasound indices for use in inflammatory bowel disease have been developed. Future research should focus on fully validating existing or novel gastrointestinal ultrasound scoring instruments for assessment of Crohn's disease and ulcerative colitis.
BACKGROUND AND AIMS: Serial measurements of luminal disease activity may facilitate inflammatory bowel disease management. Gastrointestinal ultrasound is an easily performed, non-invasive alternative to other assessment modes. However, its widespread use is limited by concerns regarding validity, reliability, and responsiveness. We systematically identified ultrasound scoring indices used to evaluate inflammatory bowel disease activity and examine their operating characteristics. METHODS: Electronic databases were searched from inception to June 14, 2019 using pre-defined terms. Studies that reported on gastrointestinal ultrasound index operating properties in an inflammatory bowel disease population were eligible for inclusion. Study characteristics, index components, and operating property (i.e., validity, reliability, responsiveness, sensitivity, specificity, accuracy, positive predictive value, and negative predictive value) data were extracted. The QUADAS-2 tool was used to examine study-level risk of bias. RESULTS: Of the 2610 studies identified, 26 studies reporting on 21 ultrasound indices were included. The most common index components included bowel wall thickness, colour Doppler imaging, and bowel wall stratification. The correlation between ultrasound indices and references standards ranged from r=0.62-0.95 and k=0.40-0.96. Sensitivity, specificity, accuracy, positive predictive value, and negative predictive values ranged from 39%-100%, 63%-100%, 73%-100%, 57%-100%, and 40%-100%, respectively. Reliability and responsiveness data were limited. Most (92%, 24/26) studies received at least one unclear or high risk of bias rating. CONCLUSIONS: Several gastrointestinal ultrasound indices for use in inflammatory bowel disease have been developed. Future research should focus on fully validating existing or novel gastrointestinal ultrasound scoring instruments for assessment of Crohn's disease and ulcerative colitis.
Authors: Johan F K F Ilvemark; Tawnya Hansen; Thomas M Goodsall; Jakob B Seidelin; Heba Al-Farhan; Mariangela Allocca; Jakob Begun; Robert V Bryant; Dan Carter; Britt Christensen; Marla C Dubinsky; Krisztina B Gecse; Torsten Kucharzik; Cathy Lu; Christian Maaser; Giovanni Maconi; Kim Nylund; Carolina Palmela; Stephanie R Wilson; Kerri Novak; Rune Wilkens Journal: J Crohns Colitis Date: 2022-05-10 Impact factor: 10.020
Authors: S Bots; F De Voogd; M De Jong; V Ligtvoet; M Löwenberg; M Duijvestein; C Y Ponsioen; G D'Haens; K B Gecse Journal: J Crohns Colitis Date: 2022-05-10 Impact factor: 10.020
Authors: Pierluigi Puca; Livio Enrico Del Vecchio; Maria Elena Ainora; Antonio Gasbarrini; Franco Scaldaferri; Maria Assunta Zocco Journal: Diagnostics (Basel) Date: 2022-08-17