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  • 1
    Electronic Resource
    Electronic Resource
    Regional myocardial motion and thickening assessed at rest by ECG-gated99mTc-MIBI emission tomography and by magnetic resonance imaging (1996)
    Springer
    European journal of nuclear medicine 23 (1996), S. 909-916 
    Details
    ISSN: 1619-7089
    Keywords: Myocardial perfusion imaging ; Gated single-photon emission tomography ; Technetium-99m methoxyisobutylisonitrile ; Magnetic resonance imaging ; Left ventricular function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We have validated ECG-gated emission tomography using technetium-99m methoxyisobutylisonitrile for the assessment of regional ventricular function by comparing it with cine magnetic resonance imaging (MRI). Gated tomography was performed at rest in 24 patients referred for myocardial perfusion imaging [17 males and seven females with a mean age of 58 years, nine of whom had had a previous myocardial infarction (MI)]. Scores were assigned to each of nine myocardial segments for wall motion and for thickening. Cine MRI was analysed in an identical fashion. Four out of 216 (2%) segments were uninterpretable by gated tomography because of inadequate tracer uptake. In eight patients without coronary artery disease (CAD), wall motion and thickening were normal by both methods. Gated tomography showed abnormal wall motion or thickening in all patients with previous MI and in five of seven patients with CAD but no prior MI. Association between wall motion and thickening was good (r s=0.86). Overall, there was good agreement between gated tomography and MRI for both wall motion (178/212 segments, κ=0.66) and wall thickening (184/212 segments, κ=0.69). In segments with severely reduced perfusion, however, there was poorer agreement (κ=0.31). Interobserver and intraobserver agreement was high (κ from 0.61 to 0.78). Thus, in patients investigated for CAD, there is good overall agreement between gated tomography and MRI but the agreement is lower in segments with severe perfusion defects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01084364
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  • 2
    Electronic Resource
    Electronic Resource
    Atrial fibrillation after intravenous dipyridamole for thallium imaging (1992)
    Springer
    European journal of nuclear medicine 19 (1992), S. 1064-1065 
    Details
    ISSN: 1619-7089
    Keywords: Dipyridamole ; Atrial fibrillation ; Thallium ; Imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Dipyridamole 0.56 mg/kg was administered intravenously for thallium tomography after myocardial infarction. Fast atrial fibrillation developed which failed to resolve with aminophylline. Sinus rhythm returned within 3 days. Myocardial tomography revealed apical infarction without reversible ischaemia. Atrial fibrillation after dipyridamole is rare and may be caused by direct electrophysiological effects on the atrial myocardium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00180869
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  • 3
    Electronic Resource
    Electronic Resource
    Bradycardia progressing to cardiac arrest during adenosine thallium myocardial perfusion imaging in occult sino-atrial disease (1994)
    Springer
    European journal of nuclear medicine 21 (1994), S. 170-172 
    Details
    ISSN: 1619-7089
    Keywords: Adenosine ; Thallium ; Asystole ; Heart ; Sino-atrial disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Adenosine is used increasingly as an alternative to dynamic exercise during myocardial perfusion imaging because it is a powerful coronary vasodilator with a short half-life. Minor side-effects are common but life-threatening events are rare. We report two cases of provocation by adenosine infusion of profound sinus bradycardia progressing to atrial and ventricular asystole. Despite discontinuation of the infusion, asystole persisted for up to 1 min in one case and was accompanied by a grand mal seizure. Normal sinus rhythm returned spontaneously in both cases without long-term sequelae. Sino-atrial disease was later suggested in both cases by 24-h electrocardiographic monitoring. We conclude that patients to whom adenosine is given may have occult sino-atrial disease and may be susceptible to life-threatening arrhythmias. Significant sinus bradycardia during the infusion may provide a warning of its presence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00175766
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Quantification of Right and Left Ventricular Function by Cardiovascular Magnetic Resonance (2000)
    Springer
    Herz 25 (2000), S. 392-399 
    Details
    ISSN: 1615-6692
    Keywords: Key Words Cardiac imaging ; MRI ; Heart ; Ventricular function ; Schlüsselwörter Kardiale Bildgebung ; Magnetresonanztomographie ; Herz ; Ventrikelfunktion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die kardiale Dysfunktion ist eine der Hauptursachen kardiovaskulärer Morbidität und Mortalität. Eine genaue und reproduzierbare Bestimmung der Herzfunktion ist essentiell für die Diagnosestellung, Prognoseabschätzung und Beurteilung des Therapieeffekts beim einzelnen Patienten. Die kardiovaskuläre Magnetresonanztomographie (CMR) bietet eine Messmethode für die globale und regionale Herzfunktion, die nicht nur genau und reproduzierbar, sondern auch nichtinvasiv, ohne ionisierende Strahlung und unabhängig von geometrischen Annahmen und einem akustischen Fenster ist, das den Einsatz der Echokardiographie limitiert. Mit der Verfügbarkeit schnellerer MR-Scanner und automatisierter Analysesysteme sowie mit zunehmender Verbreitung und reduzierten Kosten wird CMR bald den Referenzstandard für die Messung der Herzfunktion darstellen.
    Notes: Abstract Cardiac dysfunction is a major cause of cardiovascular morbidity and mortality. Accurate and reproducible assessment of cardiac function is essential for the diagnosis, the assessment of prognosis and evaluation of a patient's response to therapy. Cardiovascular Magnetic Resonance (CMR) provides a measure of global and regional function that is not only accurate and reproducible but is noninvasive, free of ionising radiation, and independent of the geometric assumptions and acoustic windows that limit echocardiography. With the advent of faster scanners, automated analysis, increasing availability and reducing costs, CMR is fast becoming a clinically tenable reference standard for the measurement of cardiac function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000590050031
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    Paper (German National Licenses)
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