15 research outputs found
Short Report of IVS Working Group 5 (WG5) on Space Science Applications - An IVS Perspective
No abstract availabl
Improving stress echocardiography accuracy for detecting left circumflex artery stenosis: A new echocardiographic sign?
SummaryBackgroundThe accuracy and reproducibility of stress echocardiography (SE) for the detection of coronary artery lesions requires improvement, particularly in the left circumflex artery (LCx).AimsTo evaluate the feasibility and diagnostic value of a new sign: Rise of the Apical lateral wall and/or Horizontal displacement of the Apex toward the septum (âRA-HAâ) in apical echocardiographic views.MethodsConsecutive patients with normal left ventricular function at rest, positive SE and an indication for coronary angiography were included. SEs were analysed blindly by three independent cardiologists: two seniors (S1 and S2) and one junior (J).ResultsOf 81 patients, 58 had an exercise SE and 23 had a dobutamine SE. Significant coronary stenosis was found in 59 of 77 patients who underwent coronary angiography (76.6%). Interobserver reproducibility for the presence of RA-HA was very good between S1 and S2 (Îș=0.86), and good between S1 and J (0.67) and S2 and J (0.70). The sensitivity, specificity and positive and negative predictive values of RA-HA for the detection of significant coronary artery stenosis were, respectively, 39â41%, 83â89%, 88â92% and 29â31% for S1/S2; and 29%, 83%, 85% and 26% for J. To predict LCx stenosis (single or multivessel): 67â70%, 89%, 80â81% and 80â82% for S1/S2, respectively, and 50%, 89%, 75% and 74% for J.ConclusionWith a short learning curve, RA-HA is easily diagnosed with a very good interobserver reproducibility. It has high specificity and PPV for the detection of a coronary artery stenosis, particularly in the LCx artery, during exercise or dobutamine SE
Planetary Exploration Horizon 2061 Report, Chapter 3: From science questions to Solar System exploration
This chapter of the Planetary Exploration Horizon 2061 Report reviews the way
the six key questions about planetary systems, from their origins to the way
they work and their habitability, identified in chapter 1, can be addressed by
means of solar system exploration, and how one can find partial answers to
these six questions by flying to the different provinces to the solar system:
terrestrial planets, giant planets, small bodies, and up to its interface with
the local interstellar medium. It derives from this analysis a synthetic
description of the most important space observations to be performed at the
different solar system objects by future planetary exploration missions. These
observation requirements illustrate the diversity of measurement techniques to
be used as well as the diversity of destinations where these observations must
be made. They constitute the base for the identification of the future
planetary missions we need to fly by 2061, which are described in chapter 4.
Q1- How well do we understand the diversity of planetary systems objects? Q2-
How well do we understand the diversity of planetary system architectures? Q3-
What are the origins and formation scenarios for planetary systems? Q4- How do
planetary systems work? Q5- Do planetary systems host potential habitats? Q6-
Where and how to search for life?Comment: 107 pages, 37 figures, Horizon 2061 is a science-driven, foresight
exercise, for future scientific investigation
Definition of the quality of transthoracic echocardiography in 2011. Echocardiography Branch of the French Society of Cardiology.
International audienc