Coronary CT Angiography Derived Plaque Markers Correlated with Invasive Instantaneous Flow Reserve for Detecting Hemodynamically Significant Coronary Stenoses

ConclusionLL/MLD4, MLA, MLD, the degree of luminal diameter stenosis, CCO, RI, and %APV derived from cCTA can support the detection of hemodynamically significant coronary stenosis as compared with iFR®, with LL/MLD4 showing the greatest discriminatory power.
Source: European Journal of Radiology - Category: Radiology Source Type: research

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Conclusion: ASA occlusion was not observed in CCM patients with spinal canal sagittal diameter compression of more than 80%. PMID: 31791211 [PubMed - as supplied by publisher]
Source: Journal of Spinal Cord Medicine - Category: Orthopaedics Tags: J Spinal Cord Med Source Type: research
We present the case of a 69 years-old man, with an insidious and progressive palsy of the III left CN with 6 months of evolution. CT scan revealed a 1,2 cm lesion located at the suprasellar and pre-pontine cistern at the free edge of the tentorium, initially compatible with the diagnosis of a small meningioma. He was submitted to surgery but surprisingly histopathological analysis revealed a cavernous malformation, intrinsic to the nerve.This is the twelfth reported case of an III cranial nerve CM, and the management of this lesions still doesn't have clear and definitive recommendations regarding treatment. In selected ca...
Source: Interdisciplinary Neurosurgery - Category: Neurosurgery Source Type: research
ConclusionTraumatic dACA aneurysm is a rare complication of brain trauma. Delayed intracranial haemorrhage and the sudden deterioration of neurologic function were the typical characteristics in patients with traumatic dACA aneurysm. CTA is the first-line screening modality for patients who present with intracerebral haemorrhage in the corpus callosum after trauma, particularly for patients who are older, in a poorer or critical condition. When the aneurysm is located in the A4 segment or involves a small branch, surgical trapping is the preferred definitive therapy to prevent further growth and disastrous bleeding. Early ...
Source: Acta Neurochirurgica - Category: Neurosurgery Source Type: research
AbstractObjectivesTo assess the capability of a newly developed material decomposition method from contrast-enhanced dual-energy CT images, aiming to better visualize the aortic wall and aortic intramural hematoma (IMH), compared with true non-contrast (TNC) CT.Materials and methodsTwenty-two patients (11 women; mean age, 61  ± 20 years) with acute chest pain underwent 25 dual-layer non-contrast and contrast-enhanced CT. CT-angiography images were retrospectively processed using two-material decomposition analysis, where we defined the first material as the content of a region of interest placed i...
Source: European Radiology - Category: Radiology Source Type: research
Publication date: Available online 2 December 2019Source: American Heart JournalAuthor(s): Novalia P Sidik, Margaret McEntegart, Giles Roditi, Thomas J Ford, Michael McDermott, Andrew Morrow, John Byrne, Jacqueline Adams, Allister Hargreaves, Keith G Oldroyd, David Stobo, Olivia Wu, Claudia-Martina Messow, Alex McConnachie, Colin BerryBackgroundMicrovascular and/or vasospastic angina are relevant causes of ischemia and no obstructive coronary artery disease (INOCA) in patients after computed tomography coronary angiography (CTCA).ObjectivesOur research has two objectives. The first is to undertake a diagnostic study and th...
Source: American Heart Journal - Category: Cardiology Source Type: research
Abstract Background: Functional assessment to rule out myocardial ischemia using coronary computed tomography angiography (CCTA) is extremely important and data on the Brazilian population are still limited. Objective: To assess the diagnostic performance of myocardial perfusion by CCTA in the detection of severe obstructive coronary artery disease (CAD) compared with single-photon emission computerized tomography (SPECT). To analyze the importance of anatomical knowledge to understand the presence of myocardial perfusion defects on SPECT imaging that is not identified on computed tomography (CT) scan. Method: A total of 3...
Source: Arquivos Brasileiros de Cardiologia - Category: Cardiology Source Type: research
Abstract Background: Functional assessment to rule out myocardial ischemia using coronary computed tomography angiography (CCTA) is extremely important and data on the Brazilian population are still limited. Objective: To assess the diagnostic performance of myocardial perfusion by CCTA in the detection of severe obstructive coronary artery disease (CAD) compared with single-photon emission computerized tomography (SPECT). To analyze the importance of anatomical knowledge to understand the presence of myocardial perfusion defects on SPECT imaging that is not identified on computed tomography (CT) scan. Method: A total of 3...
Source: Arquivos Brasileiros de Cardiologia - Category: Cardiology Source Type: research
Abstract Clinical data: Infant, 7 months, female, referred to our department at one month of age, suspecting of congenital heart disease for further investigation. Chest radiography: Demonstrates cardiomegaly and prominent pulmonary vascular markings. Electrocardiography: Shows right ventricular hypertrophy and left anterior fascicular block. Echocardiography: Evidenced common atrioventricular valve with two orifices and the left superior pulmonary vein draining on the brachiocephalic vein. Computed tomography angiography: This complementary imaging exam was performed to confirm the diagnosis. Diagnosis: The patient presen...
Source: Revista Brasileira de Cirurgia Cardiovascular - Category: Cardiovascular & Thoracic Surgery Source Type: research
ConclusionsAddition of18F-FDG-PET/CT and/or CTA changed the final diagnosis in 33% of patients and proved to be a valuable diagnostic tool in patients with suspected TAVI-IE.
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
Publication date: August 2019Source: Revista Portuguesa de Cardiologia (English Edition), Volume 38, Issue 8Author(s): Beatriz Saldanha Santos, Maria João FerreiraAbstractNon-invasive assessment of ischemic heart disease remains a challenging task, even with a large armory of diagnostic modalities. Positron emission tomography (PET) is an advanced radionuclide technique that has been available for decades. Originally used as a research tool that contributed to advances in the understanding of cardiovascular pathophysiology, it is now becoming established in clinical practice and is increasingly used in the diagnosis...
Source: Revista Portuguesa de Cardiologia - Category: Cardiology Source Type: research
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