Vol 2, No 1 (1999)
Original articles
Published online: 2000-02-22
Submitted: 2012-01-23
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Interobserver variability in 99mTc-DMSA renal scintigraphy reports: multicentric study

Emilija Jaksić, Slobodanka Beatović, Ivan Żagar, Nebojsa Punković, Aida Stefanović, Boris Ajdinović, Slobodanka Janśević, Ruben Han
Nucl. Med. Rev 1999;2(1):28-33.
Vol 2, No 1 (1999)
Original articles
Published online: 2000-02-22
Submitted: 2012-01-23

Abstract

Background: The aim of the study was to evaluate the interobserver variability and reproducibility of the renal scintigraphy reports.
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

Background: The aim of the study was to evaluate the interobserver variability and reproducibility of the renal scintigraphy reports.
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.
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Keywords

Interobserver Variability; Dimercaptosuccinic Acid; Kidney; Scintigraphy

About this article
Title

Interobserver variability in 99mTc-DMSA renal scintigraphy reports: multicentric study

Journal

Nuclear Medicine Review

Issue

Vol 2, No 1 (1999)

Pages

28-33

Published online

2000-02-22

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

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