background subdiaphragmatic activity can produce subdiaphragmatic-related artifacts, which can degrade the quality of myocardial perfusion imaging (mpi). objectives we examined the impact of drinking milk, water, and lemon juice on different subdiaphragmatic-related artifacts by using 99mtc-sestamibi myocardial single-photon emission computed tomography (spect) in order to determine a feasible ...

introduction:the external beam radiation therapy for patients with left breast cancer at the mastectomy site may cause myocardial perfusion abnormalities. we intended to study the change of these abnormalities at short and long term post radiotherapy follow up. methods: twenty patients with left and 20 patients with right breast cancer comprised the exposed and control groups, respectively. the...

fixed myocardial defects in both stress and rest images, could be artifactual as a result of soft tissue attenuation. to increase specificity and identify the false positive results, we used gated technique to evaluate the wall motion and wall thickening as an index to differentiate real ischemic lesions from artifactual defects. 93 patients were studied. in 46 patients (48.8%) fixed perfusion ...

BACKGROUND Appropriate clinical decisions concerning diagnosis and treatment of coronary artery disease rely on correct integration of data on coronary anatomy and myocardial perfusion. The purpose of this article is to introduce a new left ventricular segmentation model for improved alignment of coronary arterial segments and myocardial perfusion territories, designed for the CORE320 study. ...

Currently, two-dimensional (2D) adenosine stress myocardial perfusion cardiac magnetic resonance imaging (MRI) uses 3 to 4 cardiac slices to cover the left ventricular myocardium. Although the performance of 2D adenosine stress myocardial perfusion MRI has been shown to be equal or even better compared with single-photon emission computed tomography (SPECT) because of its superior image resolut...

Respiratory motion during acquisition of first-pass myocardial perfusion images results in translation, distortion from out-of-plane motion, and changes in left ventricular geometry. Together these effects make visual image analysis more difficult and limit methods of quantitative analysis of contrast kinetics. We present a fully automated registration and warping algorithm for correcting trans...

This study evaluated the relationship between the location of the most severe coronary artery stenosis and the subsequent acute myocardial infarction (AMI). Methods: Of 1590 patients who were admitted with a diagnosis of AMI, we identified 44 patients who had undergone previous myocardial perfusion SPECT. Thirty-one of these patients also had previous coronary angiography. The relationshi...

Background Simultaneous assessment of myocardial scar or perfusion reduction and coronary artery stenosis is currently performed by side-by-side comparison or image fusion using coronary CTA and myocardial perfusion study, but the misregistration and differences in spatial resolution between imaging methods can be problematic. A CMR technique that can visualize both myocardial scar and coronary...

introduction:patients with the coronary slow flow phenomenon (scf) frequently experience angina episodes. the purpose of this study was to determine efficacy of nicorandil in myocardial perfusion in patients with scf. methods: twenty patients (50.85 ± 12.96 y) with scf were studied.  we evaluate coronary slow flow according to protracted thrombolysis in myocardial infarction (timi) frame count....