Conference Paper

Archives for coronary angiography: a comparison of cinefilm vs. video vs. digital

German Heart Inst. Berlin
DOI: 10.1109/CIC.1992.269396 Conference: Computers in Cardiology 1992. Proceedings.
Source: IEEE Xplore


The appropriate storage and archiving of angiographic images and
data still represents a major problem in coronary angiography. Usually
one of these three physical media is used: cine film, videotape, or
digital storage. The properties of these different archive tapes are
analyzed by comparing their benefits for clinical practice. The most
important criterion for clinical diagnosis is the image quality.
Extensive studies have been performed to compare images from digital
storage, digitized cine film, VHS videotape, and worn videotape. By
using special X-ray phantoms, various image properties were measured.
The results show that digital images have the best quality in terms of
noise, sharpness, and pointspreading. Cine film has advantages in
spatial resolution, but disadvantages in contrast. The video images,
especially those from worn tape, have a dramatic loss of spatial
resolution and sharpness. Digital technology offers several progressions
like online enhancement, fast accessibility, quantitative coronary
analysis, data integration, communication, and telemedicine

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    ABSTRACT: A low cost Picture Archiving and Communications System (PACS) for coronary Angiography images has been developed. The system allows direct on-line department and even hospital-wide availability of the angiographic image sequences. The system has been built with low cost PC-based components. It provides an interface to every standard PC-based DICOM image viewer. Osiris and a custom-built image viewer are currently in use. The first version of this system has been introduced and installed in the Thoraxcenters of Rotterdam and Groningen in the summer of 1997. An extension in progress is usage of this PACS as a base for the exchange of DICOM image data sets between local referring cardiac centers. Besides, this paper addresses the clinical usage and the functional and financial benefits of the system
    Computers in Cardiology 1997; 10/1997
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    ABSTRACT: In the rapidly evolving field of intravascular ultrasound (IVUS) for tissue characterization and visualization, the assessment of vessel morphology still lacks a geometrically correct 3-D reconstruction. The IVUS frames are usually stacked up to form a straight vessel, neglecting curvature and the axial twisting of the catheter during the pullback. This paper presents a comprehensive system for geometrically correct reconstruction of IVUS images by fusion with biplane angiography, thus combining the advantages of both modalities. Vessel cross-section and tissue characteristics are obtained from IVUS, while the 3-D locations are derived by geometrical reconstruction from the angiographic projections. ECG-based timing ensures a proper match of the image data with the respective heart phase. The fusion is performed for each heart phase individually, thus yielding the 4-D data as a set of 3-D reconstructions.
    Proceedings of SPIE - The International Society for Optical Engineering 01/2001; 4158. DOI:10.1117/12.413790 · 0.20 Impact Factor

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