Comparison of different 4D CT-Perfusion algorithms to visualize lesions after microwave ablation in an in  vivo porcine model.

Conclusion: The DIDC appears to be the most feasible model to visualize margins and necrosis zones after microwave ablation, but due to high computational demand, a single input deconvolution algorithm might be preferable in clinical practice. PMID: 31724443 [PubMed - in process]
Source: International Journal of Hyperthermia - Category: Internal Medicine Tags: Int J Hyperthermia Source Type: research

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AbstractPurpose of reviewPulmonary hypertension (PH) is a complex, progressive abnormal physiologic and hemodynamic state seen in many conditions. The purpose of this review is to discuss the updated clinical and hemodynamic classification systems and diagnostic criteria of PH, discuss the role of noninvasive imaging for diagnosing PH, and outline a diagnostic pathway to facilitate targeted therapies.Recent findingsPH is defined as a mean pulmonary arterial pressure (mPAP)>  20 mmHg since the sixth World Symposium on Pulmonary Hypertension (WSPH) in 2018, a lower threshold than the longstanding definition of...
Source: Current Treatment Options in Cardiovascular Medicine - Category: Cardiology Source Type: research
AbstractBackgroundThe World Federation of Neurosurgical Societies (WFNS) scale is widely accepted for predicting outcomes for subarachnoid hemorrhage (SAH) patients. However, it is difficult to definitely predict outcomes for the most poor grade, WFNS grade 5. The present study aimed to investigate the prognostic ability of a novel classification using computed tomography perfusion (CTP) findings, called the cortical blood flow insufficiency (CBFI) scores.MethodsCTP was performed on admission for aneurysmal SAH followed by radical treatments within 72 hours of onset. Twenty-four cerebral cortex regions of interest (ROIs) w...
Source: Neurocritical Care - Category: Neurology Source Type: research
Authors: Johnson RD, Bath NK, Rinker J, Fong S, St James S, Pampaloni MH, Hope TA Abstract Coronary artery disease (CAD) is the leading cause of death in the United States (1). Myocardial perfusion imaging (MPI), using single photon emission computed tomography (SPECT) is one of the most frequently used diagnostic tools for patients at risk for CAD, and has significant prognostic value (2). Dedicated cardiac SPECT cameras such as the D-SPECT have been specifically designed for MPI studies. Equipped with new technology, the D-SPECT camera has demonstrated superior image quality when compared to standard SPECT or SPE...
Source: Journal of Nuclear Medicine Technology - Category: Nuclear Medicine Tags: J Nucl Med Technol Source Type: research
Conclusion Utilization of this anatomic variant in stacked or dual-pedicled autologous breast reconstruction results in antegrade IMA perfusion of both primary and secondary flaps, as well as improved size match compared with other anastomotic options. Knowledge of the vascular anatomy and variations in the inferior epigastric system is crucial to both preventing complications and optimizing flap planning and outcome. [...] Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: Journal of Reconstructive Microsurgery - Category: Surgery Authors: Tags: Original Article Source Type: research
Authors: Czaja-Ziółkowska MZ, Wasilewski JP, Głowacki J, Wygoda Z, Gąsior M Abstract The first part of the review concerning myocardial imaging by single photon emission computed tomography (SPECT) discussed the basic aspects of interpretation of left ventricular perfusion disorders in stress and rest examination. The second part presented the interpretation of gated SPECT imaging in relation to the assessment of systolic and diastolic left ventricular functions. The third part concerns the assessment of myocardial viability and phase analysis from gated SPECT in the qualification of patients with left ventr...
Source: Polish Journal of Cardio-Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Tags: Kardiochir Torakochirurgia Pol Source Type: research
ConclusionSuspect CMD was not associated with more negative psychological factors compared to other groups. State sadness was significantly higher for patients with suspect CMD, whereas no differences in state anxiety and other psychological factors were found.
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
AbstractCoronary chronic total occlusions (CTO) are common in patients undergoing coronary angiography, yet the optimal management strategy remains uncertain, with conflicting results from randomized trials. Appropriate patient selection and careful periprocedural planning are imperative for successful patient management. We review the role of adjunctive imaging modalities including myocardial perfusion imaging (MPI), cardiac magnetic resonance imaging (CMR), echocardiography and computed tomography coronary angiography (CTCA) in myocardial ischemic quantification, myocardial viability assessment, as well as procedural pla...
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
Purpose of review Patients on hemodialysis have significantly higher rates of cardiovascular mortality resulting from a multitude of myocardial dysfunctions. Current imaging modalities allow independent assessment of cardiac morphology, contractile function, coronary arteries and cardiac perfusion. Techniques such as cardiac computed tomography (CT) imaging have been available for some time, but have not yet had widespread adoption because of technical limitations related to cardiac motion, radiation exposure and safety of contrast agents in kidney disease. Recent findings Novel dynamic contrast-enhanced (DCE) CT imag...
Source: Current Opinion in Nephrology and Hypertension - Category: Urology & Nephrology Tags: DIAGNOSTICS AND TECHNIQUES: Edited by Maarten W. Taal Source Type: research
CONCLUSIONS AND RELEVANCE: Neuropsychological testing and MRI remain the most widely used diagnostic tests by DLB specialists. Other tests-particularly indicative biomarkers-are used only selectively. Research is needed to validate existing potential DLB biomarkers, develop new biomarkers, and investigate mechanisms to improve DLB diagnosis. PMID: 33009039 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
AbstractPurpose of ReviewEstablishing a diagnosis of ischemic heart disease (IHD) in women, including assessment for coronary microvascular dysfunction (CMD) when indicated, can be challenging. Access to performance of invasive testing when appropriate may be limited, and noninvasive imaging assessments have evolved. This review will summarize the various noninvasive imaging modalities available for the diagnosis of IHD and CMD in women, outlining indications, performance modalities, advantages, and limitations.Recent FindingsWhile stress echocardiography and single photon emission computed tomography (SPECT) myocardial pe...
Source: Current Atherosclerosis Reports - Category: Cardiology Source Type: research
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