OBJECTIVETo assess the value of magnetic resonance (MR) myocardial perfusion imaging (MRMPI) in evaluating the myocardial viability in patients with myocardial infarction.

METHODSMRMPI was performed in 51 patients with myocardial infarction using a 1.5 T MR scanner. All the patients were examined using IR-turbo FLASH sequence during the first-pass and delayed phase 5-30 min after injection of 0.1 mmol/kg Gd-DTPA at the rate of 4 ml/s. The short axis images were acquired during the first-pass, and both the short axis and long axis images were obtained during the delayed phase. The left ventricular wall on the short-axis slice was divided into 8 segments. A correlative study of the results of the rest and stress (99m)Tc single photon emission computed tomography (SPECT) was carried out in 21 patients.

RESULTSIn the 51 patients with myocardial infarction, 42(82.3%) showed hypoperfusion during the first-pass imaging and 50(98%) had delayed hyperenhancement. In the 21 patients receiving SPECT, 48 nonviable segments was detected among the 168 segments scanned by (99m)TcSPECT, and MRMPI showed delayed hyperenhancement in all the infracted areas. Of the 120 viable segments detected by rest and stress (99m)Tc SPECT, 97 segments (80.8%) were found to be free of delayed hyperenhancement by MRMPI. With the rest and stress (99m)Tc SPECT as the reference, the sensitivity and the specificity of MRMPI were 100.0% and 80.8%, respectively.

CONCLUSIONMRMPI allows effective identification of the myocardial viability and nonviability as well as the severity and extent of the myocardial infraction.

Adult ; Aged ; Aged, 80 and over ; Coronary Angiography ; Female ; Gadolinium DTPA ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Myocardial Infarction ; diagnosis ; diagnostic imaging ; physiopathology ; Myocardial Perfusion Imaging ; methods ; Sensitivity and Specificity ; Tomography, Emission-Computed, Single-Photon

Introduction: Mindful eating is being fully present in the moment of eating and it is critical in preventing poor eating habits. The main objective for this study was to determine the associations of body mass index (BMI) and physical activity level with mindful eating behaviour among undergraduate medical students of Universiti Sains Malaysia (USM), Health Campus, Kubang Kerian, Kelantan. Methods: A cross-sectional study was conducted among 158 students (Years 1-5; 69% females and 31% males) by using a self-administered online questionnaire consisting of socio-demographic data, anthropometric data, short version of the International Physical Activity Questionnaire (IPAQ), and Mindful Eating Questionnaire (MEQ). The associations between BMI and physical activity with MEQ were determined by Spearman’s Correlation and One-Way ANOVA or Kruskal-Wallis Test, respectively. Results: Majority of the students had normal BMI (66.4%, n=105), and 39.9% (n=63) had low physical activity levels. The mean MEQ summary score of the students was considered high (2.82±0.26). There was a significant negative association between MEQ summary score (r=-0.191; p=0.016) and disinhibition subscale score (r=-0.340; p<0.001) with BMI, whereby MEQ summary and disinhibition subscale scores increased as BMI decreased. However, there was no significant association between physical activity level with MEQ score (p>0.05). Conclusion: A student with positive mindful eating behaviour has the potential to lower his/her BMI. However, further research is required to verify this finding.