PMID- 24165117
OWN - NLM
STAT- MEDLINE
DCOM- 20141218
LR  - 20161125
IS  - 2047-2412 (Electronic)
IS  - 2047-2404 (Linking)
VI  - 15
IP  - 5
DP  - 2014 May
TI  - Echocardiographic image tracker with a speckle adaptive noise reduction filter 
      for the automatic measurement of the left atrial volume curve.
PG  - 509-14
LID - 10.1093/ehjci/jet196 [doi]
AB  - AIMS: Since tracking accuracy in left atrial (LA) images decreases due to low 
      image quality around the LA in the apical view, a practical tracking method for 
      LA images has not yet been proposed. The aim of this study was to assess an 
      accurate and high-speed LA volume tracking (LAVT) method for the automatic 
      measurement of LA volume (LAV) curves. METHODS AND RESULTS: We used three 
      approved protocols in this study: (i) LAV curves were measured by LAVT on 
      computer-simulated images; (ii) in 20 healthy volunteers, we assessed the 
      feasibility and accuracy of this method compared with expert's measurements; and 
      (iii) echocardiography and multi-detector row computed tomography (MDCT) imaging 
      were performed on the same day in 20 patients with suspected coronary artery 
      disease. On computer-simulated images, mean absolute percentage LAVT error in one 
      cardiac cycle was 3% in filtered images and 16% in original images. In 20 healthy 
      volunteers, there are strong correlations between LAVT and the expert's LA 
      measurements (LA maximum volume; R = 0.93, P < 0.001). In 400 LA images with 20 
      patients, an excellent correlation was obtained between LAVs using 
      echocardiography and MDCT (R = 0.98, P < 0.001), with a small bias (-14% of the 
      mean) and narrow limits of agreement (+15% of the mean). The mean time required 
      for the LAVT analysis was 1.8 min, for the MDCT analysis was 35.8 min, and for 
      the manual echocardiographic analysis was 14.0 min. CONCLUSION: This LAVT method 
      is fast, valid, accurate, and reproducible for determining LAV in both simulated 
      images and the clinical setting.
FAU - Kusunose, Kenya
AU  - Kusunose K
AD  - Department of Cardiovascular Medicine, University Hospital of Tokushima, 2-50-1, 
      Kuramoto-cho, Tokushima 770-8504, Japan.
FAU - Chono, Tomoaki
AU  - Chono T
FAU - Tabata, Tomotsugu
AU  - Tabata T
FAU - Yamada, Hirotsugu
AU  - Yamada H
FAU - Sata, Masataka
AU  - Sata M
LA  - eng
PT  - Journal Article
DEP - 20131027
PL  - England
TA  - Eur Heart J Cardiovasc Imaging
JT  - European heart journal. Cardiovascular Imaging
JID - 101573788
SB  - IM
MH  - Adult
MH  - Aged
MH  - *Atrial Function, Left
MH  - Case-Control Studies
MH  - Coronary Disease/*diagnostic imaging
MH  - Echocardiography/*methods
MH  - Humans
MH  - Image Enhancement/methods
MH  - Middle Aged
MH  - Reproducibility of Results
MH  - Signal Processing, Computer-Assisted
MH  - Tomography, X-Ray Computed
OTO - NOTNLM
OT  - Echocardiography
OT  - Image tracking
OT  - Left atrium
OT  - Noise reduction
OT  - Speckle
EDAT- 2013/10/30 06:00
MHDA- 2014/12/19 06:00
CRDT- 2013/10/30 06:00
PHST- 2013/10/30 06:00 [entrez]
PHST- 2013/10/30 06:00 [pubmed]
PHST- 2014/12/19 06:00 [medline]
AID - jet196 [pii]
AID - 10.1093/ehjci/jet196 [doi]
PST - ppublish
SO  - Eur Heart J Cardiovasc Imaging. 2014 May;15(5):509-14. doi: 10.1093/ehjci/jet196. 
      Epub 2013 Oct 27.