Résumé
Objective To explore the clinical value of 99Tcm-MIBI G-MPI in patients diagnosed with myocardial bridging(MB) by CTA. Methods Forty-five patients with MB and 17 normal controls diagnosed by CTA(64 slices CT) were included. All patients underwent rest 99Tcm-MIBI G-MPI and 17 MB patients and 9 normal controls also underwent stress 99Tcm-MIBI G-MPI. Myocardial ischemia, function and wall motion were assessed. G-MPI results were compared with CTA results by χ2 test, Fisher exact test and t test. Results In patients with MB, the positive rate of abnormal perfusion by gated stress 99Tcm-MIBI G-MPI was 64.7% (11/17) and 41.2% (7/17) using quantitative analysis and visual evaluation respectively; while the data were 42.2% (19/45) and 22.2% (10/45) by rest G-MPI (P=0.035). The positive rate by rest G-MPI in MB patients was significant different among mural coronary arteries of different depths and different locations. By quantitative analysis of the stress G-MPI, the reversible, fixed, and mixed ischemia patients were 4 (35.3%), 6 (23.5%) and 1 (5.9%) respectively; the reversed, reversible and fixed abnormity of wall motion was found in 4 (23.5%), 4 (23.5%) and 2 (11.8%) patients respectively; the reversed, reversible and fixed wall thickening were found in 6 (35.3%), 5 (29.4%) and 1 (5.9%) patients respectively. There was no significant difference in left ventricular ejection fraction and peak filling rate between MB patients and normal controls in both rest and stress studies (t: from -0.564 to 1.292, all P>0.05). Conclusion The G-MPI may be useful for the evaluation of myocardial ischemia and myocardial function simultaneously in patients with MB.
Résumé
<p><b>OBJECTIVE</b>To evaluate radionuclide scrotal imaging (RSI) in the diagnosis of varicocele.</p><p><b>METHODS</b>We performed physical examination (PE) and RSI for 126 patients with infertility for at least 12 months and seminal abnormality, obtained the scrotal blood-pool index (SBPI), observed the reflux in the spermatic vein during RSI, typed and graded varicocele by color Doppler flow imaging (CDFI) and compared the results of PE and RSI with those of CDFI.</p><p><b>RESULTS</b>The rates of sensitivity and specificity of RSI in the diagnosis of varicocele (96.5% and 97.1%) were both higher than those of PE (71.7% and 69.1%).</p><p><b>CONCLUSION</b>Simple, accurate and noninvasive, RSI is an effective method for the diagnosis of clinical and subclinical varicocele.</p>