Diagnosing coronary artery disease by sound analysis from coronary stenosis induced turbulent blood flow: diagnostic performance in patients with stable angina pectoris
Abstract Optimizing risk assessment may reduce use of advanced diagnostic testing in patients with symptoms suggestive of stable coronary artery disease (CAD). Detection of diastolic murmurs from post-stenotic coronary turbulence with an acoustic sensor placed on the chest wall can serve as an easy, safe, and low-cost supplement to assist in the diagnosis of CAD. The aim of this study was to evaluate the diagnostic accuracy of an acoustic test (CAD-score) to detect CAD and compare it to clinical risk stratification and coronary artery calcium score (CACS). We prospectively enrolled patients with symptoms of CAD referred to either coronary computed tomography or invasive coronary angiography (ICA). All patients were tested with the CAD-score system. Obstructive CAD was defined as more than 50 % diameter stenosis diagnosed by quantitative analysis of the ICA. In total, 255 patients were included and obstructive CAD was diagnosed in 63 patients (28 %). Diagnostic accuracy evaluated by receiver operating characteristic curves was 72 % for the CAD-score, which was similar to the Diamond–Forrester clinical risk stratification score, 79 % (p = 0.12), but lower than CACS, 86 % (p
Publication date: March 2020Source: Journal of Vascular and Interventional Radiology, Volume 31, Issue 3, SupplementAuthor(s): M. Latif, J. Madrazo, T. Hemmingson, C. Weiss
Publication date: March 2020Source: Journal of Vascular and Interventional Radiology, Volume 31, Issue 3, SupplementAuthor(s): N. Harrison, S. Stavropoulos
We thank Lan éelle et al for their interest in our recent article.1 We also want to commend the authors for their excellent publication demonstrating the ability of transcutaneous oxygen pressure (TcPO2) of the calf and buttock, applied during a treadmill exercise test, to identify patients who have significan t lower extremity atherosclerotic burden as measured by computed tomography angiography.2 Both TcPO2 and near-infrared spectroscopy (NIRS) represent exciting methods to measure the balance of oxygen delivery, demand, and utilization in the legs of patients with peripheral artery disease (PAD) in rea l time.
Digital subtraction angiography (DSA) is standardly used to identify prostatic arteries during PAE, a complex task due to pelvic vascular anatomy variability (1), and an essential one given its impact on clinical outcome (2). More recently, cone-beam CT (CBCT) has been encouraged to allow identification of all vessels going to the prostate gland and their exact origin, without projection limitations due to the two-dimensional nature of DSAs (3). In this work we compare them to understand some advantages of using CBCT in PAE.
Acute intra-abdominal hemorrhage is a deadly condition and prompt diagnosis of active extravasation on CT angiography (CTA) to guide endovascular embolization can prevent significant morbidity and mortality. Convolutional neural networks (CNNs) have shown promise in automatically detecting acute radiologic findings and may hasten diagnosis and treatment of acute intra-abdominal hemorrhage.
The purpose of this study was to create a financial model to quantify the daily revenue required to make a hybrid angiography/CT system a financially viable entity at a tertiary care academic center.
To investigate the amount of radiation that patients were exposed to while undergoing computed tomography (CT) angiography and catheter angiography (CA), 99mTechnetium-Labeled Red Blood Cell (RBC) Scintigraphy and CA, and CA alone in the setting of a potential gastrointestinal bleed (GIB).
To investigate the relationship between computed tomography (CT) angiography and 99mtechnetium-labeled red blood cell (RBC) scintigraphy to catheter angiography (CA) in the management of gastrointestinal bleeding (GIB) from an institutional point of view.
This study aims to evaluate renal function and contrast-induced nephropathy in patients with clinical concern for LGIB in patients receiving computed tomography angiography (CTA) and subsequent catheter-directed angiography.
Splenic artery embolization is essential in the nonoperative management of splenic trauma. At our institution contrast-enhanced computed tomography (CT) is performed in stable patients in the setting of blunt trauma. When active extravasation or pseudoaneurysm is identified, a code angio is initiated followed by angiographic evaluation. The operator will then select an agent for their desired target. Within our institution, glue embolization is being more frequently selected, as opposed to plugs or coils.