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Reproducibility of three‐dimensional ultrasound endometrial volume measurements in patients with postmenopausal bleeding
Author(s) -
Yaman C.,
Ebner T.,
Jesacher K.,
Obermayr G.,
Pölz W.,
Tews G.
Publication year - 2002
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1046/j.1469-0705.2002.00644.x
Subject(s) - reproducibility , medicine , ultrasound , nuclear medicine , 3d ultrasound , radiology , volume (thermodynamics) , mathematics , statistics , physics , quantum mechanics
Objective To evaluate the reproducibility of transvaginal three‐dimensional (3D) endometrial volume measurement in patients with postmenopausal bleeding and to compare the reproducibility of this technique to that of two‐dimensional (2D) endometrial thickness measurement. Methods In a prospective, blinded study, transvaginal ultrasound examinations were performed in 51 consecutive patients with postmenopausal bleeding. Three‐dimensional volume and 2D thickness measurements were made and intraobserver and interobserver reproducibility of each technique were assessed. Results The intraobserver correlation of 3D endometrial volume measurement of the first observer was 0.97 and that of the second observer was 0.99. Thus, mean intraobserver correlation was 0.98. The mean interobserver correlation was 0.95 (0.95 vs. 0.96). There was no significant difference in reproducibility at different volume cut‐offs. The mean intra‐ and interobserver correlation of endometrium volume measurements for five patients with endometrial carcinoma did not differ significantly from that for patients without carcinoma (0.98, 0.98 vs. 0.98, 0.95). The intraobserver correlation of 2D endometrial thickness measurements from the first observer was 0.71 and that from second observer 0.87. Thus, mean intraobserver correlation of the endometrial thickness measurements was 0.79. The mean interobserver correlation was 0.76 (0.84 vs. 0.70). Conclusions Endometrial volume and thickness measurements by 3D and 2D ultrasound, respectively, show good repro‐ducibility but the reproducibility of 3D ultrasound is better. Copyright © 2002 ISUOG