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Reproducibility study of fetal 3-D volumetry in the first trimester: effect of fetal size and rotational angle of VOCAL software.

Abstract Intra- and inter-observer reproducibility of fetal volume measurement by 3-D ultrasound scan (using VOCAL [Virtual Organ Computer-Aided Analysis] software) in 27 fetuses at 7 to 13 wk was studied. For intra-observer variability, the mean difference (MD) and 95% limits of agreement (95% LOA) at 12?, 18? and 30? were MD(12) = 0.097, 95% LOA(12) = -0.87 to +1.06; MD(18) = 0.07, 95% LOA(18) = -1.31 to +1.45; and MD(30) = -0.07, 95% LOA(30) = -1.55 to +1.41. The standard deviation of the differences (SD(DIF)) increased with crown-rump length at 12? (p = 0.0016), 18? (p = 0.0011) and 30? (p = 0.02). For inter-observer variability, MD(12) = 0.15, 95% LOA(12) = -1.65 to +1.95; MD(18) = 0.042, 95% LOA(18) = -1.79 to +1.87; and MD(30) = 0.19, 95% LOA(30) = -1.24 to +1.62. SDDIF increased with crown-rump length at 18? (p = 0.0084) and 30? (p = 0.0073). The accuracy of fetal volume measurement was not influenced by rotational angle or fetal size. Precision deteriorated for wider rotational angles and larger fetuses.
PMID
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Authors

Mayor MeshTerms

Crown-Rump Length

Keywords

3-D ultrasound

Accuracy

Fetal volume

First-trimester ultrasound scan

Precision

Reproducibility

Virtual organ computer-aided analysis

Journal Title ultrasound in medicine & biology
Publication Year Start

@Article{Papastefanou2014,
author="Papastefanou, Ioannis
and Kappou, Dimitra
and Souka, Athena P.
and Pilalis, Athanasios
and Chrelias, Charalambos
and Siristatidis, Charalambos
and Kassanos, Dimitrios",
title="Reproducibility study of fetal 3-D volumetry in the first trimester: effect of fetal size and rotational angle of VOCAL software.",
journal="Ultrasound in medicine \& biology",
year="2014",
month="May",
day="10",
volume="40",
number="5",
pages="877--883",
keywords="Cross-Sectional Studies",
keywords="Crown-Rump Length",
keywords="Female",
keywords="Humans",
keywords="Image Processing, Computer-Assisted",
keywords="Imaging, Three-Dimensional",
keywords="Observer Variation",
keywords="Pregnancy",
keywords="Pregnancy Trimester, First",
keywords="Prospective Studies",
keywords="Reproducibility of Results",
keywords="Software",
keywords="Ultrasonography, Prenatal",
abstract="Intra- and inter-observer reproducibility of fetal volume measurement by 3-D ultrasound scan (using VOCAL [Virtual Organ Computer-Aided Analysis] software) in 27 fetuses at 7 to 13 wk was studied. For intra-observer variability, the mean difference (MD) and 95\% limits of agreement (95\% LOA) at 12{\textdegree}, 18{\textdegree} and 30{\textdegree} were MD(12) = 0.097, 95\% LOA(12) = -0.87 to +1.06; MD(18) = 0.07, 95\% LOA(18) = -1.31 to +1.45; and MD(30) = -0.07, 95\% LOA(30) = -1.55 to +1.41. The standard deviation of the differences (SD(DIF)) increased with crown-rump length at 12{\textdegree} (p = 0.0016), 18{\textdegree} (p = 0.0011) and 30{\textdegree} (p = 0.02). For inter-observer variability, MD(12) = 0.15, 95\% LOA(12) = -1.65 to +1.95; MD(18) = 0.042, 95\% LOA(18) = -1.79 to +1.87; and MD(30) = 0.19, 95\% LOA(30) = -1.24 to +1.62. SDDIF increased with crown-rump length at 18{\textdegree} (p = 0.0084) and 30{\textdegree} (p = 0.0073). The accuracy of fetal volume measurement was not influenced by rotational angle or fetal size. Precision deteriorated for wider rotational angles and larger fetuses.",
issn="1879-291X",
doi="10.1016/j.ultrasmedbio.2013.11.012",
url="http://www.ncbi.nlm.nih.gov/pubmed/24412167",
language="eng"
}



PMID- 24412167
OWN - NLM
STAT- MEDLINE
DA  - 20140404
DCOM- 20141218
IS  - 1879-291X (Electronic)
IS  - 0301-5629 (Linking)
VI  - 40
IP  - 5
DP  - 2014 May
TI  - Reproducibility study of fetal 3-D volumetry in the first trimester: effect of
      fetal size and rotational angle of VOCAL software.
PG  - 877-83
LID - 10.1016/j.ultrasmedbio.2013.11.012 [doi]
LID - S0301-5629(13)01177-0 [pii]
AB  - Intra- and inter-observer reproducibility of fetal volume measurement by 3-D
      ultrasound scan (using VOCAL [Virtual Organ Computer-Aided Analysis] software) in
      27 fetuses at 7 to 13 wk was studied. For intra-observer variability, the mean
      difference (MD) and 95% limits of agreement (95% LOA) at 12 degrees , 18 degrees 
      and 30 degrees were MD(12) = 0.097, 95% LOA(12) = -0.87 to +1.06; MD(18) = 0.07, 
      95% LOA(18) = -1.31 to +1.45; and MD(30) = -0.07, 95% LOA(30) = -1.55 to +1.41.
      The standard deviation of the differences (SD(DIF)) increased with crown-rump
      length at 12 degrees (p = 0.0016), 18 degrees (p = 0.0011) and 30 degrees (p =
      0.02). For inter-observer variability, MD(12) = 0.15, 95% LOA(12) = -1.65 to
      +1.95; MD(18) = 0.042, 95% LOA(18) = -1.79 to +1.87; and MD(30) = 0.19, 95%
      LOA(30) = -1.24 to +1.62. SDDIF increased with crown-rump length at 18 degrees (p
      = 0.0084) and 30 degrees (p = 0.0073). The accuracy of fetal volume measurement
      was not influenced by rotational angle or fetal size. Precision deteriorated for 
      wider rotational angles and larger fetuses.
CI  - Copyright (c) 2014 World Federation for Ultrasound in Medicine & Biology.
      Published by Elsevier Inc. All rights reserved.
FAU - Papastefanou, Ioannis
AU  - Papastefanou I
AD  - Fetal Medicine Unit, 3rd Department of Obstetrics and Gynaecology, University of 
      Athens, Attikon University Hospital, Athens, Greece. Electronic address:
      [email protected]
FAU - Kappou, Dimitra
AU  - Kappou D
AD  - Fetal Medicine Unit, 3rd Department of Obstetrics and Gynaecology, University of 
      Athens, Attikon University Hospital, Athens, Greece.
FAU - Souka, Athena P
AU  - Souka AP
AD  - Fetal Medicine Unit, 3rd Department of Obstetrics and Gynaecology, University of 
      Athens, Attikon University Hospital, Athens, Greece.
FAU - Pilalis, Athanasios
AU  - Pilalis A
AD  - Fetal Medicine Unit, 3rd Department of Obstetrics and Gynaecology, University of 
      Athens, Attikon University Hospital, Athens, Greece.
FAU - Chrelias, Charalambos
AU  - Chrelias C
AD  - Fetal Medicine Unit, 3rd Department of Obstetrics and Gynaecology, University of 
      Athens, Attikon University Hospital, Athens, Greece.
FAU - Siristatidis, Charalambos
AU  - Siristatidis C
AD  - Fetal Medicine Unit, 3rd Department of Obstetrics and Gynaecology, University of 
      Athens, Attikon University Hospital, Athens, Greece.
FAU - Kassanos, Dimitrios
AU  - Kassanos D
AD  - Fetal Medicine Unit, 3rd Department of Obstetrics and Gynaecology, University of 
      Athens, Attikon University Hospital, Athens, Greece.
LA  - eng
PT  - Journal Article
PT  - Observational Study
DEP - 20140110
PL  - England
TA  - Ultrasound Med Biol
JT  - Ultrasound in medicine & biology
JID - 0410553
SB  - IM
MH  - Cross-Sectional Studies
MH  - *Crown-Rump Length
MH  - Female
MH  - Humans
MH  - Image Processing, Computer-Assisted/*methods
MH  - Imaging, Three-Dimensional/*methods/statistics & numerical data
MH  - Observer Variation
MH  - Pregnancy
MH  - Pregnancy Trimester, First/*physiology
MH  - Prospective Studies
MH  - Reproducibility of Results
MH  - Software
MH  - Ultrasonography, Prenatal/*methods/statistics & numerical data
OTO - NOTNLM
OT  - 3-D ultrasound
OT  - Accuracy
OT  - Fetal volume
OT  - First-trimester ultrasound scan
OT  - Precision
OT  - Reproducibility
OT  - Virtual organ computer-aided analysis
EDAT- 2014/01/15 06:00
MHDA- 2014/12/19 06:00
CRDT- 2014/01/14 06:00
PHST- 2013/06/16 [received]
PHST- 2013/11/06 [revised]
PHST- 2013/11/11 [accepted]
PHST- 2014/01/10 [aheadofprint]
AID - S0301-5629(13)01177-0 [pii]
AID - 10.1016/j.ultrasmedbio.2013.11.012 [doi]
PST - ppublish
SO  - Ultrasound Med Biol. 2014 May;40(5):877-83. doi:
      10.1016/j.ultrasmedbio.2013.11.012. Epub 2014 Jan 10.