International journal of cardiac imaging最新文献

{"title":"How to standardize vasomotor tone in serial studies based on quantitation of coronary dimensions?","authors":"S Jost,&nbsp;C W Nolte,&nbsp;M Sturm,&nbsp;J Hausleiter,&nbsp;D Hausmann","doi":"10.1023/a:1006076409185","DOIUrl":"https://doi.org/10.1023/a:1006076409185","url":null,"abstract":"<p><p>In patients with coronary artery disease including those after coronary bypass graft operation and heart transplantation intervention studies based on serial quantitative coronary angiography, in part combined with intravascular ultrasound, are of increasing relevance. Since vasomotor tone of epicardial coronary arteries is influenced by a variety of factors, angiographic follow-up studies require standardization of coronary tone by induction of maximal dilation. We reviewed the effects of the most potent coronary vasodilatory drug groups, calcium antagonists and nitrocompounds, on coronary diameters. Intravenous or intracoronary injections of verapamil, diltiazem, nifedipine, nicardipine, and nisoldipine can cause profound coronary dilation which has been shown to be maximal with verapamil and nisoldipine. Shortcomings of calcium antagonists include short or unknown duration of action after bolus administration, severe drop in blood pressure, and lack of commercial availability of solutions for injection of many substances. Isosorbide dinitrate induces profound coronary dilation; however, after sublingual administration marked blood pressure decrease can occur, and the duration of action and ideal dose of intracoronary isosorbide dinitrate has not been investigated yet. Injections of molsidomine and its active metabolite, SIN-1, cause longlasting, reproducible, maximal coronary dilation, although only after a waiting period of at least 10 minutes; unfortunately, SIN-1 is only commercially available in France. Nitroglycerin induces reproducible maximal coronary dilation and is easy to administer sublingually or as intracoronary bolus injection with rapid onset of action and no major side effects. The short duration of action may require repeated administrations. To date, repeated intracoronary bolus injections of 0.1 mg nitroglycerin every 10 minutes seem to be the optimal known regimen for standardization of coronary vasomotor tone in serial angiographic studies. Further investigations in this field with old and new vasodilatory drugs are recommendable.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 6","pages":"357-72"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006076409185","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21318576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of radionuclide angiography with three echocardiographic parameters of left ventricular function in patients after myocardial infarction.","authors":"A W van 't Hof,&nbsp;C W Schipper,&nbsp;J G Gerritsen,&nbsp;S Reiffers,&nbsp;J C Hoorntje","doi":"10.1023/a:1006082214191","DOIUrl":"https://doi.org/10.1023/a:1006082214191","url":null,"abstract":"<p><strong>Aims: </strong>Left ventricular function is an important outcome measure in patients with coronary artery disease, in particular in patients after myocardial infarction. It is reliably assessed by radionuclide angiography, but echocardiographic wall motion scoring might be an attractive alternative.</p><p><strong>Methods: </strong>Four days after reperfusion therapy for acute myocardial infarction both radionuclide angiography and echocardiography were performed in 90 patients. Segmental wall motion scoring (WMSI) and visual estimation of the left ventricular ejection fraction (LVEF) was done by 2 independent observers. Repeated analysis was performed 1 month after the first reading. In 41 patients the LVEF was assessed quantitatively by tracing of endocardial outlines of the left ventricle.</p><p><strong>Results: </strong>Both correlation with radionuclide angiography (estimated LVEF: r = 0.71, WMSI: r = -0.68, Tracing: r = 0.59) and inter- and intra-observer variability (estimated LVEF: 19% and 15%, WMSI: 65% and 59%) were in favour of the LVEF estimation method. Correlation with radionuclide angiography measurements was related to the quality of the echocardiogram and to the extent of coronary artery disease.</p><p><strong>Conclusion: </strong>Simple echocardiographic estimation of left ventricular ejection fraction in patients after reperfusion therapy for acute myocardial infarction proved to be superior to quantitative assessment of ejection fraction and to segmental wall motion scoring in comparison with radionuclide angiography.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 6","pages":"413-8"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006082214191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21318579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The status of the GE approach to the digital catheterization laboratory.","authors":"P J Herro","doi":"10.1023/a:1006081911774","DOIUrl":"https://doi.org/10.1023/a:1006081911774","url":null,"abstract":"<p><p>The digital cardiac catheterization laboratory has become a reality. The cardiac catheterization community has embraced the DICOM standard as the vehicle for filmless archiving of cardiac angiographic studies. General Electric Medical Systems (GE) provides a completely scaleable offering for filmless archiving with the GEMnet product line. The GEMnet philosophy: practicality, scaleability, reliability and upgradeability. Practicality is conforming to standards. Standards in imaging data format and communications. Scaleability of a system configuration maximizes the dollar spent to match the right system to the patient volume of a department. Reliability is a fault tolerant design, redundancy of data to insure system up-time and advanced system diagnostics to speed service time. Upgradeability is keeping pace with the evoluation of new technologies to take advantage of increases in performance and reductions in price.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"329-33"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006081911774","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21319233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Digital networking and archiving with ACOM T.O.P.","authors":"W Saalfrank","doi":"10.1023/a:1006077810866","DOIUrl":"https://doi.org/10.1023/a:1006077810866","url":null,"abstract":"<p><p>The international DICOM 3 standard for a single patient record exchange media (CD-R) provided the necessary definition for digital recording and distribution of cardiac angiographic patient data. The medical industry developed archive and review stations that allow the replacement of the 35 mm cine film. SIEMENS launched ACOM. T.O.P. in late 1995. The benefits and technical solution are presented in this paper. Today, the solution for networked real-time image data distribution within the hospital has become reality. Further integration of hemodynamic data, connectivity of hospital information systems, easy access and distribution of such high volume data from and to remote locations is well under way. ACOM. net is used as an example for the realization of commercial products to fulfill the demands of cardiologist and hospital administrators.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"323-7"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006077810866","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21319232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical importance of the DICOM structured reporting standard.","authors":"W D Bidgood","doi":"10.1023/a:1006073709957","DOIUrl":"https://doi.org/10.1023/a:1006073709957","url":null,"abstract":"<p><p>The purpose of the DICOM Structured Reporting (SR) specification is to improve the documentation of diagnostic images and waveforms. The specification supports the interchange of expressive compound reports in which the critical features shown by images and waveforms can be denoted unambiguously by the observer, indexed, and retrieved selectively by subsequent reviewers. Findings may be expressed by the observer as: 1) text, codes, numeric measurements: 2) computer-generated coordinates of specific regions of interest within images or waveforms; or 3) reference to comparison images, sound, waveforms, curves, and previous report information. The observational and historical findings recorded by the observer may include any evidence referenced as part of an interpretation procedure. Thus, DICOM SR supports not only the reporting of diagnostic observations, but the capability to document fully the evidence that evoked the observations. This capability provides significant new opportunities for large-scale collection of structured data for clinical research, training, and outcomes assessment as a routine by-product of diagnostic image and waveform interpretation and facilitates the pooling of structured data for multi-center clinical trials and evaluations.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"307-15"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006073709957","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21319230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Camtronics experience with the filmless digital catheterization laboratory.","authors":"M A Kapp,&nbsp;S T Vaughn","doi":"10.1023/a:1006034028613","DOIUrl":"https://doi.org/10.1023/a:1006034028613","url":null,"abstract":"<p><p>Systems based on the Archium Digital Cardiac System architecture are providing filmless operation for cardiac catheterization departments in over 80 institutions today. Filmless operation provides direct cost savings from the elimination of cine film as well as its development and management. In addition to these savings, benefits are being realized from productivity associated with changes in the workflow in the department. Image quality and processing capability consistent with the image quality and processing available in the cath lab have proven to be key components in changing workflow and improving efficiency. Solutions are now available which can deliver this level of performance for most departments including multiple lab departments with cath labs from different manufacturers. With Archium, physician productivity can be enhanced with the immediate availability of studies outside the lab and the ability to consult online. Cath lab turnover can be improved significantly. Staff productivity is realized from improved image management as well. The Archium's modular architecture has already accommodated system evolution without obsolescence of existing systems.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"343-8"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006034028613","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21319235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Kodak approach to digital cardiovascular imaging laboratories.","authors":"G A Pelanek","doi":"10.1023/a:1006029927704","DOIUrl":"https://doi.org/10.1023/a:1006029927704","url":null,"abstract":"<p><p>Cine film had been a global standard in the cardiac catheterization lab for the acquisition, archive, review and exchange for decades. The advent of digital imaging in the cath lab heightened the desire to store cath procedure images in a digital format. The issues related to the development of a digital exchange standard, the data capacities and data rates, lossless and lossy compression, and techniques to obtain digital image data from the lab are discussed. In addition, Kodak's approach to cine film replacement with digital systems is described.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"335-42"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006029927704","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21319234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Replacement of cinefilm with a digital archive and review network.","authors":"J T Cusma,&nbsp;M A Wondrow,&nbsp;D R Holmes","doi":"10.1023/a:1006017609049","DOIUrl":"https://doi.org/10.1023/a:1006017609049","url":null,"abstract":"<p><p>The replacement of cinefilm with digital cardiac angiography has accelerated significantly in recent years with the development and widespread adoption of the DICOM standard for interchange of procedure image data. While the acceptance of the Compact Disk-Recordable (CD-R) media has provided the opportunity for numerous laboratories to eliminate cinefilm in all its functions, the task is more complex for larger catheterization laboratories which require the use of high speed networks and automated libraries. The Cardiac Laboratory at the Mayo Clinic has implemented the final stages of a large-scale network and archive which meets a large institution's demanding requirements for access, speed, and storage for high volumes of digital cardiac angiographic images. Initial experience with the system demonstrates that this approach will be a successful one for the elimination of cinefilm and the employment of digital imaging and networking technology. In addition, direct access to digital image records will also facilitate the integration of image data with other clinical information acquired and stored in a digital format.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"293-300"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006017609049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21318083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integration of haemodynamic and electrocardiographic waveform data with DICOM images.","authors":"H P Solomon","doi":"10.1023/a:1006021725887","DOIUrl":"https://doi.org/10.1023/a:1006021725887","url":null,"abstract":"<p><p>The cardiac catheterization procedure involves acquisition of haemodynamic and electrocardiographic waveforms, as well as X-ray angiographic images. The DICOM standards is being extended to address robust interchange of this waveform data together with the image data, so as to present an integrated data set for the procedure. The proposed waveform information object definition is one of the new generation of DICOM extensions, and uses controlled vocabularies and coded entry sequences to represent clinically significant aspects of the data acquisition. This enables a generic waveform object to be specialized for disparate uses, e.g., haemodynamics, electrocardiograms, phonocardiograms, and electrophysiological data.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"301-6"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006021725887","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21318084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated image storage solution for the Cath department.","authors":"R A Weterings","doi":"10.1023/a:1006117024692","DOIUrl":"https://doi.org/10.1023/a:1006117024692","url":null,"abstract":"<p><p>Contemporary Image Storage systems for the Catheterization department manage and distribute digital cardiac images according to the \"cine-film\" paradigm. The images are digital, but the applications have not changed much. This situation will change in the near future. New systems are being developed to store additional (clinical related) data with X-ray Angiographic (XA) Images. Furthermore, the image storage domains are no longer an island in the hospital infrastructure. Efficiency requires the availability of images with other data at the various \"point of care\" locations. This in turn raises requirements and expectations about the standards in the area of application interoperability, since no single vendor can supply the complete solution. Recent DICOM (Digital Imaging and Communications in Medicine) standardization activities play an important role in extending the current scope of image oriented storage solutions towards a more integrated imaging and information (clinical) folder for the Cath department. The paper will address the following issues: New requirements on \"self-contained\" Image Storage solutions for the Cath lab. How to deal with the demand for interdepartmental communication using upcoming (new) DICOM standards and HL7 (Health Level Seven) in this area. The increasing influence of computer technology, replacing vendor-specific solutions by general-accepted standards from the Information Technology (IT) world. A step-wise approach to come to an integrated clinical (patient) folder with inherent capabilities for data interchange with other Cardiology departments and the hospitals information infrastructure.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"14 5","pages":"349-56"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006117024692","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21319236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}