Interobserver variability in 99mTc-DMSA renal scintigraphy reports: multicentric study
Abstract
Methods: The study was prospective performed in 60 99mTc DMSA scintigraphies (116 kidneys), done in one centre, displayed on X ray films as analogue 300 kcounts images in 4 standard projections. Six observers from 4 different centres (group A), including three observers from one institution (group B), were asked to interpret original scans. Seven parameters of scintigraphy protocol were analysed with at least two responses: kidney size (1), uptake (2), outlines (3), scars (4), SOL (5), differential function (6) and conclusion (7).
Results: Among 116 kidneys, concordant results in interpretation of seven points of report from 1 to 7, in the group A were found in 62%, 42,5°%, 45%, 9%, 47%, 52% and 34%, and In the group B in 72%, 55%, 59%, 22%, 62%, 60% and 41% respectively. Some improvement in concordant reporting was noted in the group of 3 observers, in comparison of group of all, statistically significant in category of scar reports (p < 0.01).
Conclusions: Results suggest to use of standardised criteria and terminology in interpretations, to improve low interobserver reproducibility and objectivity of renal scintigraphy reports, particularly in evaluation of renal scars.
Abstract
Methods: The study was prospective performed in 60 99mTc DMSA scintigraphies (116 kidneys), done in one centre, displayed on X ray films as analogue 300 kcounts images in 4 standard projections. Six observers from 4 different centres (group A), including three observers from one institution (group B), were asked to interpret original scans. Seven parameters of scintigraphy protocol were analysed with at least two responses: kidney size (1), uptake (2), outlines (3), scars (4), SOL (5), differential function (6) and conclusion (7).
Results: Among 116 kidneys, concordant results in interpretation of seven points of report from 1 to 7, in the group A were found in 62%, 42,5°%, 45%, 9%, 47%, 52% and 34%, and In the group B in 72%, 55%, 59%, 22%, 62%, 60% and 41% respectively. Some improvement in concordant reporting was noted in the group of 3 observers, in comparison of group of all, statistically significant in category of scar reports (p < 0.01).
Conclusions: Results suggest to use of standardised criteria and terminology in interpretations, to improve low interobserver reproducibility and objectivity of renal scintigraphy reports, particularly in evaluation of renal scars.
Keywords
Interobserver Variability; Dimercaptosuccinic Acid; Kidney; Scintigraphy
About this articleTitle
Interobserver variability in 99mTc-DMSA renal scintigraphy reports: multicentric study
Journal
Issue
Article type
Research paper
Pages
28-33
Published online
2000-02-22
Page views
543
Bibliographic record
Nucl. Med. Rev 1999;2(1):28-33.
Keywords
Interobserver Variability
Dimercaptosuccinic Acid
Kidney
Scintigraphy
Authors
Emilija Jaksić
Slobodanka Beatović
Ivan Żagar
Nebojsa Punković
Aida Stefanović
Boris Ajdinović
Slobodanka Janśević
Ruben Han
