geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Magnetic resonance imaging early after acute myocardial infarction. A visual analysis of myocardial perfusion based on a 17 segment model


, : Magnetic resonance imaging early after acute myocardial infarction. A visual analysis of myocardial perfusion based on a 17 segment model. Annales de Cardiologie et D'angeiologie 52(1): 7-14

Magnetic resonance imaging allows an accurate calculation of the left ventricular ejection fraction and left ventricular volumes. Additionally, it makes possible to assess myocardial perfusion after gadolinium chelate injection. Late after the injection, the presence of a myocardial hyper-enhancement can be visualized. The present study has used the 17 segment standardized nomenclature for tomographic imaging of the heart as recommended for all cardiac imaging modalities. Sixty nine patients were studied after a revascularised myocardial infarction. All patients had Timi grade 3 flow in the infarct-related artery after therapy. Regional and global function was studied using cine MR short axis slices. The gadolinium chelate first pass was scored using a 5 level scale reflecting the transmural extent of the segmental myocardial enhancement. The delayed enhancement due to gadolinium accumulation in the myocardium 10 min post injection was scored in the same manner. Left ventricular ejection fraction was 51 +/- 13%. Segmental thickening parameters (systolic thickness, absolute thickening and relative thickening) appeared statistically related to the hypoperfusion and delayed enhancement scores. Absolute myocardial thickening varied from 4.8 +/- 2.7 mm in the myocardial segments free of any delayed enhancement to 2.4 +/- 2.1 mm in segments presenting with a transmural extent of the delayed hyper-enhancement. Scores obtained after gadolinium injection were also well correlated with the global left ventricular function (r = 0.65, p < 0.01 for late enhancement). Magnetic resonance imaging of the heart allows a precise characterisation of revascularised myocardium which makes this technique very attractive for evaluating the treatments designed to improve myocardial microperfusion.

US$29.90

PMID: 12710289


Other references

Wingard, J.R.; Elfenbein, G.J., 1996: Host immunologic augmentation for the control of infection. The emergence of resistance to pharmacologic antimicrobial agents and the desire to increase chemotherapy dose-intensity have necessitated the search for alternative means to control infectious disease. Enhancement of host immunity against infecti...

L.G.ll J Y.; Hughes G.R., 1987: Migrations of the green turtle chelonia mydas in the southwest indian ocean observed from taggings on the egg laying sites on the europa and tromelin atolls 1970 1985. Since 1970 the tagging of green turtle Chelonia mydas has been carried out in South Western Indian Ocean: Europa (1970-1985) 4843 females tagged, 15 international recaptures: Tromelin (1971-1984) 3766 females tagged, 12 international recaptures. T...

Schwarz, G., 1998: Rhinomanometric studies of thermal modification of nasal ventilation. Elevation of nasal resistance has been described as an effect of increased air temperature by different authors. The aim of this study was to evaluate the effect of high environmental temperature on congestion of the nasal mucosa. In all, 102 volu...

Thouret J.C.; Murcia L.A.mando; Salinas E.R.salba; Vatin Perignon N., 1985: Chronostratigraphy by means of K/ Ar and C-14 dating of composite volcanoes from the Ruiz-Tolima Complex and volcano-structural aspects of the Nevado del Ruiz, Central Cordillera, Colombia. Memorias - Congreso Latinoamericano de Geologia 6(1): 336-382

Bhaskar, S.N.; Weinmann, J.P.; Schour, I., 1953: Role of Meckel's cartilage in the development and growth of the rat mandible. Journal of Dental Research 32(3): 398-410

Shenoy, K.T.; Balakumaran, L.K.; Mathew, P.; Prasad, M.; Prabhakar, B.; Sood, A.; Singh, S.P.; Rao, N.P.; Zargar, S.A.; Bignamini, A.A., 2015: Metadoxine Versus Placebo for the Treatment of Non-alcoholic Steatohepatitis: A Randomized Controlled Trial. The study aimed at assessing the therapeutic efficacy and safety of metadoxine versus placebo on the ultrasonographic and histological features of non-alcoholic steatohepatitis (NASH). 134 subjects with biopsy-confirmed NASH were randomized to rec...

Fuchibe, K.; Morikawa, T.; Shigeno, K.; Fujita, T.; Ichikawa, J., 2015: Pinpoint-fluorinated phenacenes: new synthesis and solubility enhancement strategies. The Pd(II)-catalyzed cyclizations of 2,2-difluorovinylated biaryls, following a Friedel-Crafts-type mechanism, provide a new route to pinpoint-fluorinated phenacenes. The single fluorine substituent stabilized the synthesized fluoropicenes (fluoro...

Wallace, E.C.lvin, H.; Cooper, G., 1983: Progressive defects observed in mouse sperm during the course of three generations of selenium deficiency. Gamete research(4): 377-387

Krywulak, S.A.; Mohtadi, N.G.H.; Russell, M.L.; Sasyniuk, T.M., 2005: Patient satisfaction with inpatient versus outpatient reconstruction of the anterior cruciate ligament: a randomized clinical trial. To compare satisfaction levels after reconstruction of the anterior cruciate ligament (ACL) between inpatients and outpatients by means of a valid and comprehensive outcome tool. Fifty patients examined at a tertiary clinic who met the study'...

Salvy, S-Jeanne.; Bowker, J.Wojslawowicz.; Roemmich, J.N.; Romero, N.; Kieffer, E.; Paluch, R.; Epstein, L.H., 2007: Peer influence on children's physical activity: an experience sampling study. The primary objective was to examine the associations between social context (the presence of peers, friends, and family members) and physical activity intensity for overweight and lean girls and boys. Participants for this study included 10 boys...