Stress perfusion
Meta analysis of the diagnostic performance of stress perfusion cardiovascular magnetic resonance for detection of coronary artery disease
... showed stress perfusion CMR to have a high sensitivity (89%) and a moderate specificity (80%) at patient level for the diagnosis of significant obstructive CAD in patients with high prevalence of CAD ...(on ...
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Prognostic value of normal regadenoson stress perfusion cardiovascular magnetic resonance
... perfusion CMR (Philips 1.5 T) with regadenoson. Three short-axis slices of the left ventricle (LV) were obtained during first pass of contrast using a hybrid GRE-EPI pulse sequence (0.075 mmol/kg ...
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Combined myocardial stress perfusion imaging and myocardial stress tagging for detection of coronary artery disease at 3 Tesla
... Only recently a study employing a similar scanning approach (imaging sequence and contrast agent dose) has been published comparing diagnostic accuracy of adeno- sine stress imaging at 3T vs. 1.5T in the same ...
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Comparison of exercise electrocardiography and stress perfusion CMR for the detection of coronary artery disease in women
... noninvasive stress-test as part of their clinical workup prior to elective CA, in 14 patients (21%) symp- toms alone were considered highly suggestive of CAD by the treating physician and CA was deemed indicated ...
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Inhomogeneous myocardial stress perfusion in SPECT studies predicts future allograft dysfunction in heart transplant recipients
... Data acquisition started 30 to 60 min after intravenous tracer injection (ECAM, Siemens Gammasonics; 2 heads, 24 projections, 64 × 64 matrix, 180° orbit, 50 s per step, 8 ECG-gates, zoom factor = 1.45). Flood sources ...
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Adenosine Stress Perfusion Cardiac MRI: Improving Image Quality Using a 32 Channel Surface Coil
... and temporal encoding (e.g. k-t SENSE) can be used to increase spatial resolution [8,9] however, using temporal information requires post processing and is prone to movement artefacts, which cannot be identified until ...
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Clinical applications of cardiac CT angiography
... ECG stress treadmill test. A pooled analysis of stress tests for the diagnosis of “significant” CAD demonstrated a sensitivity/specificity of 80%/86% for stress echocardiography and 84%/77% for ...
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Single bolus versus split dose gadolinium administration in extra cellular volume calculation at 3 Tesla
... sine stress perfusion protocol. For stress perfusion, intra-venous adenosine was administered at 140 mcg/ kg/min, via an intra-venous cannula sited in the ante- cubital fossa, for a minimum of ...
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Perfusion vector—a new method to quantify myocardial perfusion scintigraphy images: a simulation study with validation in patients
... The stress perfusion vector changed drastically for the pa- tients with lateral defects on the x-axis, as ...the perfusion vector for the inferior defects was ori- ented in the opposite direction ...
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Real time cine and myocardial perfusion with treadmill exercise stress cardiovascular magnetic resonance in patients referred for stress SPECT
... Throughout stress, vital signs were recorded and a super- vising physician and nurse evaluated the patient for symptoms and signs of ...the stress 99m-Tc sestamibi isotope dose of 31 mCi was injected ...
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Assessment of global myocardial perfusion reserve using cardiovascular magnetic resonance of coronary sinus flow at 3 Tesla
... The epicardial coronary arteries represent only a tiny fraction of the overall coronary circulation - which ex- tends from the large epicardial conduit arteries through pre-arterioles, arterioles and capillaries before ...
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UK perspective on the changing landscape of non-invasive cardiac testing
... (ETT, stress perfusion cardiac MRI, myocardial stress perfusion and stress echocardiography) for each financial year from 2011–2012 to ...non- stress cardiac MRI, inconsistency ...
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New concept of myocardial longitudinal strain reserve assessed by a dipyridamole infusion using 2D-strain echocardiography: the impact of diabetes and age, and the prognostic value
... of LSR in the diabetic population. LSR is not influenced by duration of diabetes in contrast to baseline [33]. Gly- caemic control, treatments and vascular disease other than CAD do not influence either LSR. In parallel, ...
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Gadolinium enhanced cardiovascular magnetic resonance: administered dose in relationship to united states food and drug administration (FDA) guidelines
... of developing NFS compared with those who received lower doses. Patients who have cardiovascular disease may have other medical conditions that require MRI examination. Thus, the relatively high dose of GBCA used for CMR ...
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The effect of pressure or flow stress on right ventricular protein synthesis in the face of constant and restricted coronary perfusion
... Cardiac stress produced by hypertension or excess volume loading results in different types of ...or perfusion without profoundly affecting coronary ...a perfusion model in which the right ventricle ...
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Real-time vascular mechanosensation through ex vivo artery perfusion
... shear stress, ex vivo studies remain the most physiologically relevant due to their ability to observe the combined effects of nearly all the fluid forces acting on the ...
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Relationship between grades of macular perfusion and foveal thickness in branch retinal vein occlusion
... retinal perfusion status around the macula areas as follows: full perfusion area, partial perfusion area, and nonperfusion area (Table ...Full perfusion area was defined as the presence of ...
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Muscle perfusion scan for prediction of anticipated diabetic foot ulceration
... Usefulness of thallium-201 muscle perfusion scan to investigate perfusion reserve in the lower limbs of Type 2 diabetic patients. Investigation of perfusion reserve us[r] ...
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Benefits of combined pharmacologic and submaximal exercise stress on Sub-diaphragmatic activity in myocardial perfusion scintigraphy
... Therefore, the main purpose of our study was to assess sub-diaphragmatic activity changes, and to identify the ratio of cardiac uptake to sub-diaphragmatic viscera (liver and[r] ...
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The absence of an arterial pressure effect on filtration by perfused glomeruli of the hagfish, Eptatretus stouti (Lockington)
... Relationship between perfusion rate, perfusion pressure and single glomerulus filtration rate The pressure generated in the perfusion line appeared to depend entirely upon the flow resis[r] ...
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