Interobserver variation of single-photon emission computed tomography bone scans in patients evaluated for unilateral condylar hyperactivity

L.H.E. Karssemakers; P.G. Raijmakers; J.W. Nolte; D.B. Tuinzing; A.G. Becking

doi:10.1016/j.oooo.2012.11.016

Interobserver variation of single-photon emission computed tomography bone scans in patients evaluated for unilateral condylar hyperactivity

L.H.E. Karssemakers, P.G. Raijmakers, J.W. Nolte, D.B. Tuinzing, A.G. Becking

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Objective
This study assessed the quantitative evaluation of the region of interest (ROI) by mean and maximum pixel counts of single-photon emission computed tomography (SPECT) scans in patients with clinical suspicion of unilateral condylar hyperactivity (UCH); the interobserver reliability and the correlation of condylar activity with patient age was determined.

Methods
Two independent observers analyzed 67 bone SPECT scans. Maximum and mean activity values within an ROI on the mandibular condyle were analyzed; a cutoff value of 55% was used to determine the qualitative outcome.

Results
Excellent interobserver agreement was seen for both maximum (kappa 1.0) and mean activity analysis (kappa 0.94). Maximum and mean condylar activities were strongly correlated (r > 0.98). Maximum and mean condylar activity of the normal condyle decreased significantly with increasing age.

Conclusions
Maximum and mean condylar activity levels were highly correlated in patients with mandibular asymmetry. An excellent interobserver agreement was found with either maximum or mean condylar activity.

Original language	English
Pages (from-to)	399-405
Journal	Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Volume	115
Issue number	3
DOIs	https://doi.org/10.1016/j.oooo.2012.11.016
Publication status	Published - 2013

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10.1016/j.oooo.2012.11.016

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@article{8d46e1a8ab32458b8d669c2dd77aa809,

title = "Interobserver variation of single-photon emission computed tomography bone scans in patients evaluated for unilateral condylar hyperactivity",

abstract = "ObjectiveThis study assessed the quantitative evaluation of the region of interest (ROI) by mean and maximum pixel counts of single-photon emission computed tomography (SPECT) scans in patients with clinical suspicion of unilateral condylar hyperactivity (UCH); the interobserver reliability and the correlation of condylar activity with patient age was determined.MethodsTwo independent observers analyzed 67 bone SPECT scans. Maximum and mean activity values within an ROI on the mandibular condyle were analyzed; a cutoff value of 55% was used to determine the qualitative outcome.ResultsExcellent interobserver agreement was seen for both maximum (kappa 1.0) and mean activity analysis (kappa 0.94). Maximum and mean condylar activities were strongly correlated (r > 0.98). Maximum and mean condylar activity of the normal condyle decreased significantly with increasing age.ConclusionsMaximum and mean condylar activity levels were highly correlated in patients with mandibular asymmetry. An excellent interobserver agreement was found with either maximum or mean condylar activity.",

author = "L.H.E. Karssemakers and P.G. Raijmakers and J.W. Nolte and D.B. Tuinzing and A.G. Becking",

year = "2013",

doi = "10.1016/j.oooo.2012.11.016",

language = "English",

volume = "115",

pages = "399--405",

journal = "Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology",

issn = "2212-4403",

publisher = "Elsevier USA",

number = "3",

}

Interobserver variation of single-photon emission computed tomography bone scans in patients evaluated for unilateral condylar hyperactivity. / Karssemakers, L.H.E.; Raijmakers, P.G.; Nolte, J.W. et al.
In: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, Vol. 115, No. 3, 2013, p. 399-405.

Research output: Contribution to Journal › Article › Academic › peer-review

TY - JOUR

T1 - Interobserver variation of single-photon emission computed tomography bone scans in patients evaluated for unilateral condylar hyperactivity

AU - Karssemakers, L.H.E.

AU - Raijmakers, P.G.

AU - Nolte, J.W.

AU - Tuinzing, D.B.

AU - Becking, A.G.

PY - 2013

Y1 - 2013

N2 - ObjectiveThis study assessed the quantitative evaluation of the region of interest (ROI) by mean and maximum pixel counts of single-photon emission computed tomography (SPECT) scans in patients with clinical suspicion of unilateral condylar hyperactivity (UCH); the interobserver reliability and the correlation of condylar activity with patient age was determined.MethodsTwo independent observers analyzed 67 bone SPECT scans. Maximum and mean activity values within an ROI on the mandibular condyle were analyzed; a cutoff value of 55% was used to determine the qualitative outcome.ResultsExcellent interobserver agreement was seen for both maximum (kappa 1.0) and mean activity analysis (kappa 0.94). Maximum and mean condylar activities were strongly correlated (r > 0.98). Maximum and mean condylar activity of the normal condyle decreased significantly with increasing age.ConclusionsMaximum and mean condylar activity levels were highly correlated in patients with mandibular asymmetry. An excellent interobserver agreement was found with either maximum or mean condylar activity.

AB - ObjectiveThis study assessed the quantitative evaluation of the region of interest (ROI) by mean and maximum pixel counts of single-photon emission computed tomography (SPECT) scans in patients with clinical suspicion of unilateral condylar hyperactivity (UCH); the interobserver reliability and the correlation of condylar activity with patient age was determined.MethodsTwo independent observers analyzed 67 bone SPECT scans. Maximum and mean activity values within an ROI on the mandibular condyle were analyzed; a cutoff value of 55% was used to determine the qualitative outcome.ResultsExcellent interobserver agreement was seen for both maximum (kappa 1.0) and mean activity analysis (kappa 0.94). Maximum and mean condylar activities were strongly correlated (r > 0.98). Maximum and mean condylar activity of the normal condyle decreased significantly with increasing age.ConclusionsMaximum and mean condylar activity levels were highly correlated in patients with mandibular asymmetry. An excellent interobserver agreement was found with either maximum or mean condylar activity.

U2 - 10.1016/j.oooo.2012.11.016

DO - 10.1016/j.oooo.2012.11.016

M3 - Article

SN - 2212-4403

VL - 115

SP - 399

EP - 405

JO - Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

JF - Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

IS - 3

ER -

Interobserver variation of single-photon emission computed tomography bone scans in patients evaluated for unilateral condylar hyperactivity

Abstract

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