The international angiographic compression study
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چکیده
منابع مشابه
The international angiographic compression study.
2000 by the America DICOM cardiac standard became universally accepted throughout the world as the only method appropriate for exchange of digital angiographic images. More recently, the DICOM Standards Committee has adopted a high-resolution standard, defined as 1024 1024 pixel images with up to 12 bits (4096 levels) of gray scale per pixel. The large quantities of digital data required to rep...
متن کاملIntroduction and background: the International Angiographic Compression study.
The current issues (April issue) of the Journal of the American College of Cardiology (JACC) and the European Heart Journal (Eur Heart J) contain three related manuscripts that report the findings of a major international clinical study of the impact of digital data compression on the diagnostic accuracy of coronary angiography. Because the topic is complex and most practitioners have a limited...
متن کاملAmerican College of Cardiology/ European Society of Cardiology international study of angiographic data compression phase I
METHODS At six centers, 71 angiographers each reviewed a set of 100 angiographic sequences. The 100 sequences were divided into four, 25-sequence subsets. Each subset of 25 was displayed either as original images or at one of three compression ratios (CRs) (6:1, 10:1 or 16:1). The effect of lossy compression on the sensitivity and specificity for detection of diagnostic features was determined....
متن کاملAmerican College of Cardiology/ European Society of Cardiology international study of angiographic data compression phase II
METHODS A series of 48 obstructed coronary segments were compressed/decompressed at CR 1:1 (uncompressed), 6:1, 10:1 and 16:1 and analyzed blindly and in random order using the QCA-CMS analytical software. Similar catheter and vessel startand end-points were used within each image quartet, respectively. All measurements were repeated after several weeks using newly selected startand end-points....
متن کاملAmerican College of Cardiology/ European Society of Cardiology international study of angiographic data compression phase III. Measurement Of image quality differences at varying levels of data compression.
OBJECTIVES We sought to investigate up to which level of Joint Photographic Experts Group (JPEG) data compression the perceived image quality and the detection of diagnostic features remain equivalent to the quality and detectability found in uncompressed coronary angiograms. BACKGROUND Digital coronary angiograms represent an enormous amount of data and therefore require costly computerized ...
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ژورنال
عنوان ژورنال: European Heart Journal
سال: 2000
ISSN: 0195-668X
DOI: 10.1053/euhj.1999.2103