A5049604138- Cardiac Imaging and Diagnostics
- Intracranial Aneurysms: Treatment and Complications
- Vascular Malformations Diagnosis and Treatment
- Advanced MRI Techniques and Applications
- Advanced X-ray and CT Imaging
- Cardiovascular Function and Risk Factors
- Cerebrovascular and Carotid Artery Diseases
- Coronary Interventions and Diagnostics
- Intracerebral and Subarachnoid Hemorrhage Research
- Cardiomyopathy and Myosin Studies
- Traumatic Brain Injury and Neurovascular Disturbances
- Moyamoya disease diagnosis and treatment
- Neurosurgical Procedures and Complications
- Radiation Dose and Imaging
- Medical Imaging Techniques and Applications
- Cardiovascular Health and Disease Prevention
- Cardiac Fibrosis and Remodeling
- Cardiovascular Disease and Adiposity
- Aortic Disease and Treatment Approaches
- Meningioma and schwannoma management
- Cardiac Valve Diseases and Treatments
- Cerebral Venous Sinus Thrombosis
- Spinal Fractures and Fixation Techniques
- Acute Ischemic Stroke Management
- Acute Myocardial Infarction Research
Ehime University
2013-2024
Shikoku Cancer Center
2021-2024
Canon (Japan)
2021
Weatherford College
2021
Hospital de Sant Pau
2021
Erasmus MC
2013-2018
Onze Lieve Vrouwziekenhuis Hospital
2018
RELX Group (United States)
2018
London Borough of Camden
2018
Institute of Cardiology
2018
To validate an on-site algorithm for computation of fractional flow reserve (FFR) from coronary computed tomographic (CT) angiography data against invasively measured FFR and to test its diagnostic performance as compared with that CT angiography.The institutional review board provided a waiver this retrospective study. From in 106 patients, was at local workstation by using computational fluid dynamics algorithm. Invasive measurement performed 189 vessels (80 which had ≤ 0.80); these...
✓ The authors studied the venous drainage system and its impairment in relation to risk of hemorrhage 108 cases supratentorial arteriovenous malformation (AVM). proportion AVM's undergoing (hemorrhagic rate) was calculated to: 1) number draining veins (one, two, or three more); 2) presence absence (severe stenosis occlusion veins); 3) location (deep alone, superficial a combination two). Statistical analysis demonstrated that with following characteristics had high hemorrhage: one vein rate...
Background The present study was designed to: (i) detect myocardial ischemia in contrast enhanced multi-slice spiral computed tomography (CE-MSCT) using adenosine triphosphate (ATP) pharmacological stress test; and (ii) evaluate the potential of ATP CE-MSCT a clinical setting. Methods Results Twelve patients underwent thallium-201 perfusion scintigraphy (MPS) 9 received conventional coronary angiography (CAG). Dual scans were performed for rest images, with without intravenous infusion (0.16...
Object. Intracranial vertebral artery (VA) dissection with subarachnoid hemorrhage is notorious for frequent rebleeding and a poor prognosis. Nevertheless, some patients survive good final outcome. The factors associated the prognosis of this disease are not fully understood appropriate treatment strategies continue to be debated. authors retrospectively evaluated clinical features conservatively treated elucidate relationship between angiographic characteristics outcomes. Methods. This...
Abstract Aims Continuous thermodilution is a novel technique to quantify absolute coronary flow and microvascular resistance (MVR). Notably, intracoronary infusion of saline elicits maximal hyperaemia, obviating the need for adenosine. The primary aim this study was validate continuous in humans by comparing invasive measurements [15O]H2O positron emission tomography (PET). As secondary goal, MVR were compared between obtained with without Methods results Twenty-five patients underwent...
Objectives Quantitative myocardial perfusion imaging by computed tomography (CT) was recently introduced to calculate blood flow (MBF). Because absolute MBF thresholds may be affected technique, methodology, and the microvasculature, we investigated whether a relative measure of improves accuracy identify hemodynamically significant coronary stenosis. Materials Methods In this prospective study, 42 patients (mean [SD] age, 62.3[8.7] years; 8 women) with suspected or known disease underwent...
Application of endovascular surgery for very small aneurysms is controversial because technical difficulties and high complication rates. The aim in the present study was to assess treatment results a series such lesions at one institution. Since 1997, has been advocated ruptured (< 3 mm maximum diameter) that fulfill criterion fundus/neck ratio greater than 1.5. Twenty-one patients were treated, whom World Federation Neurosurgical Societies classification before Grade I 10, II two, III IV...
Background: Myocardial perfusion SPECT (MPS) traditionally requires the patient to be in supine position, but diaphragmatic attenuation of inferior wall reduces test specificity. The aim this study was assess feasibility combined MPS and prone positions using a novel cadmium zinc telluride (CZT) camera. Methods Results: A total 276 consecutive patients with suspected/known coronary artery disease (CAD) who underwent single-day 99mTc-tetrofosmin or 99mTc-sestamibi stress/rest CZT SPECT, were...
To investigate the additional value of transmural perfusion ratio (TPR) in dynamic CT myocardial imaging for detection haemodynamically significant coronary artery disease compared with fractional flow reserve (FFR). Subjects suspected or known were prospectively included and underwent a CT-MPI examination. From time-point data absolute blood (MBF) values temporally resolved using hybrid deconvolution model. An MBF was measured defect. TPR defined as between subendocardial subepicardial MBF....
Background The feasibility of using cardiac multidetector-row computed tomography (MDCT) technology in the quantitative assessment myocardial blood flow (MBF) adenosine triphosphate (ATP) load technique was investigated present study. Methods and Results study group comprised 14 patients (11 men, 3 women, age range 52-79 years, mean 69.2 years) who underwent cine MDCT ATP-load technique. MBF estimated from slope linear regression equation with Patlak plots analysis. overall average 1.83±0.62...
Coronary computed tomography angiography (CCTA) not only provides information regarding luminal stenoses but also allows for visualization of mural atheromatous changes (coronary plaques).We sought to elucidate whether plaques seen on CCTA enable prediction 2-year outcomes in patients with suspected and known coronary artery disease (CAD).Of 3015 who underwent CCTA, the images clinical courses 2802 were independently analyzed. The primary endpoint was composite all-cause death acute...
Recent radiological studies have shown that arteriovenous malformations with impaired venous drainage may be susceptible to hemorrhage. To evaluate this hypothesis using a hemodynamic approach, we measured intravascular pressure during surgery in three patients malformation. In pressures the draining system and feeding arteries simultaneously before removal of marked segmental stenotic or occlusive veins evidence The vein at prestenotic (or preocclusive) sites were 38, 25, 40 mm Hg,...
We attempted to assess coronary artery flow using adenosine-stress and dual-energy mode with dual-source CT (DE-CT). Data of 18 patients suspected arteries disease who had undergone cardiac DE-CT were retrospectively analyzed. The divided into two groups: 10 performed adenosine stress CT, 8 rest as controls. reconstructed an iodine map composite images at 120 kV (120 images) raw data scan parameters 100 140 kV. measured mean attenuation in the proximal distal portion on both images. Coronary...