PMID- 19890642
OWN - NLM
STAT- MEDLINE
DCOM- 20100715
LR  - 20211020
IS  - 1432-1084 (Electronic)
IS  - 0938-7994 (Linking)
VI  - 20
IP  - 5
DP  - 2010 May
TI  - Robustness of end-systolic reconstructions in coronary dual-source CT angiography 
      for high heart rate patients.
PG  - 1118-23
LID - 10.1007/s00330-009-1642-9 [doi]
AB  - OBJECTIVES: Reconstruction of cardiac computed tomography (CT) images is 
      challenging when the heart rate is higher than 65 beats per minute (bpm). The 
      optimal reconstruction time is often found to be at the end-systolic phase, but 
      image quality remains uncertain. Using dual-source (DS) CT and 83-ms temporal 
      resolution, we evaluated the robustness of the temporal window with low motion 
      during the end systole. METHODS: We studied 41 DSCT in consecutive patients with 
      a heart rate >65 bpm. Eleven systolic reconstructions were performed every 20 ms 
      between 200 ms and 400 ms of the R-R interval. The end-systolic temporal window 
      (ESTW) was defined as the interval between the first and last selected phases 
      judged adequate for diagnosis. RESULTS: Heart rates varied from 67 to 150 bpm. 
      ESTW was always to be found greater than 100 ms. The mean ESTW was 178 ms (SD: 57 
      ms), and varied independently of heart rate. All data sets achieved diagnostic 
      quality during the end-systolic phase at a time point between 35 and 50% of the 
      R-R interval. CONCLUSION: Our data suggest that CT with a temporal window below 
      100 ms may provide acceptable systolic reconstructions at any heart rate, in a 
      large proportion of patients.
FAU - Adler, Ghazal
AU  - Adler G
AD  - Department of Radiology, Centre Chirurgical Marie Lannelongue, Le 
      Plessis-Robinson, France.
FAU - Meille, Laurent
AU  - Meille L
FAU - Rohnean, Adela
AU  - Rohnean A
FAU - Sigal-Cinqualbre, Anne
AU  - Sigal-Cinqualbre A
FAU - Capderou, Andre
AU  - Capderou A
FAU - Paul, Jean-Francois
AU  - Paul JF
LA  - eng
PT  - Journal Article
DEP - 20091105
PL  - Germany
TA  - Eur Radiol
JT  - European radiology
JID - 9114774
RN  - 0 (Contrast Media)
RN  - 17E17JBP8L (iomeprol)
RN  - JR13W81H44 (Iopamidol)
SB  - IM
MH  - Cardiac-Gated Imaging Techniques/*methods
MH  - Contrast Media
MH  - Coronary Angiography/*methods
MH  - Coronary Disease/*diagnostic imaging
MH  - Female
MH  - Heart Rate/*physiology
MH  - Humans
MH  - Imaging, Three-Dimensional
MH  - Iopamidol/analogs & derivatives
MH  - Male
MH  - Radiographic Image Enhancement/methods
MH  - Radiographic Image Interpretation, Computer-Assisted/*methods
MH  - Systole
MH  - Tomography, X-Ray Computed/*methods
EDAT- 2009/11/06 06:00
MHDA- 2010/07/16 06:00
CRDT- 2009/11/06 06:00
PHST- 2009/06/28 00:00 [received]
PHST- 2009/09/24 00:00 [accepted]
PHST- 2009/09/21 00:00 [revised]
PHST- 2009/11/06 06:00 [entrez]
PHST- 2009/11/06 06:00 [pubmed]
PHST- 2010/07/16 06:00 [medline]
AID - 10.1007/s00330-009-1642-9 [doi]
PST - ppublish
SO  - Eur Radiol. 2010 May;20(5):1118-23. doi: 10.1007/s00330-009-1642-9. Epub 2009 Nov 
      5.