Exemplos de uso de Perfusion images em Inglês e suas traduções para o Português
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Myocardial perfusion images acquisition.
Visual analysis of the myocardial perfusion images.
Myocardial perfusion images processing and analysis.
Qualitative assessment of the radiopharmaceutical concentration in 17 myocardial segments was used to analyze the perfusion images.
The qualitative analysis of the perfusion images was a study limitation.
The perfusion images remained unaltered between phases 1 and 2 of the study, suggesting that there was no infection during the period.
In addition to helping the analysis of perfusion images, these parameters can offer important prognostic information.
Perfusion images and LGE are most important in differentiating tumors from thrombi, since neoplastic lesions present with a vascularized tissue component that enhances after contrast, while there is no enhancement in hematic thrombi.
Inclusion criteria were: normal myocardial perfusion images on scintigraphy and LVEF greater than or equal to 50% as calculated by gated SPECT.
He underwent a physical stress similar to the previous, and in the evaluation of the perfusion images Figure 2, a restricted perfusion defect.
Resting myocardial perfusion images were abnormal in six of the seven patients with myocardial infarction.
Compared to recent related studies, this study used a low rate of ionizing radiation. This could be explained by some factors: Physical parameters kV and mA were adapted to the BMI of the patient and kept as low as reasonably possible. Prospective acquisition limiting radiation was applied only to a short interval of the electrocardiogram.The field of view was limited to the heart and the perfusion images were acquired using only one beat for each phase.
Myocardial perfusion images were processed in a dedicated computer using commercially available software programs Sopha Medical Vision.
Image interpretation was based on the direct visual analysis and also on the quantitative verification of the perfusion images obtained automatically with the software programs CEQUAL, ECtoll-box and QGS/ QPS for simultaneous assessment of the ejection fraction.
Myocardial perfusion images provide relevant functional data for appropriate characterization of the diseases and their treatment, and its final appearance results from the interaction of various processes.
In the present study, the assessment of global andsegmental ventricular function was performed by obtaining ECG-gated myocardial perfusion images, which permitted simultaneous assessment of myocardial perfusion and function, thus providing greater power of observation of the topographic correlation between the abnormalities found.
When associated with lung perfusion images, MRA can aid in differentiating between chronic thromboembolic pulmonary hypertension CTEPH and primary pulmonary hypertension PPH.
The first clinical trials suggested that the myocardial perfusion images generated by the SPECT with MIBI underestimated the presence of viable myocardium in ischemic areas, when compared to other methods.
Patients with normal resting myocardial perfusion images, and no abnormalities in the levels of myocardial necrosis markers and serial electrocardiogram, underwent risk stratification with physical or pharmacological stress imaging.
A technical issue inherent to the myocardial perfusion images acquisition by SPECT is the frequent presence of attenuation artifacts or false uptake defects resulting from the passage of photons through soft tissues.
According to the department routine,the criteria for the analysis of myocardial perfusion images were visual and qualitative evaluations of the radiotracer concentration in the different myocardial segments 17 segments, comparing cut-by-cut the images of the stress phase with the corresponding baseline ones.
Cerebral perfusion image.
Perfusion image reconstruction was carried out with a 3-mm thickness, 2-mm increment, B23 filter and temporal resolution of 75 ms.
All patients presented complaint about thoracic pain and perfusion image of distress and normal rest.
At the end of the perfusion image acquisition, aminophylin was administered at a dose of 3 mg/kg of body weight maximum of 5 mg/kg to antagonize the vasodilation effects of dipyridamole.
Each follow-up had its perfusion image analyzed and quantified through the 5-point semi-quantitative score system: 0 normal, 1 discreet reduction in captation, 2 moderate reduction in captation, 3 important reduction in captation of radioisotope, 4 apparent absence of detectable captation in the follow-up.
In figure 5,we present the results of a cerebral perfusion image of a young rat.
Subsequently, static images of perfusion with injection of Tc-MAA were obtained.
At peak, it is possible to obtain the images of perfusion under stress with gadolinium 0.05- 0.1 mmol/kg at the infusion speed of 4 to 5 ml/sec.