A new method for the noninvasive, continuous determination of the compliance of the carotid artery wall has been developed and, in an initial study, validated. Measurements of pulsatile changes in the diameter of the carotid artery are accomplished with the 4-electrode impedance method, and the intravascular blood pressure is measured using an applanation tonometer developed during this project. The method has been employed for measurements in 12 individuals with no vascular disease, and in one patient with carotid artery stenosis before, during and after successful dilatation. With the pressure-volume curves recorded during the cardiac cycle, it is possible to calculate dynamic compliance and the non-elastic deformation work. While initial results are very promising, further validation by a large-scale clinical study is required.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1515/bmte.2000.45.10.277 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Selective cerebral perfusion for reduced cerebral blood flow during debranching thoracic endovascular aortic repair.
J Vasc Surg Cases Innov Tech
April 2025
Department of Cardiovascular Surgery, Higashiosaka City Medical Center, Higashiosaka, Osaka, Japan.
A 69-year-old man with chest pain was diagnosed with acute type B aortic dissection with the entry tear located at distal arch and a distal aortic arch aneurysm. Therefore, we performed debranching thoracic endovascular aortic repair 2 weeks after type B aortic dissection onset. First, the graft was anastomosed to bilateral axillary arteries.
View Article and Find Full Text PDFFibromuscular Dysplasia Clinical Phenotype Manifesting as a Distal Spontaneous Coronary Artery Dissection in a Middle-Aged Man.
Cureus
January 2025
Internal Medicine, University of Florida College of Medicine, Gainesville, USA.
Fibromuscular dysplasia (FMD) is a non-atherosclerotic, non-inflammatory vascular disease of medium-sized arteries that causes abnormal cellular growth in arterial walls and most commonly affects young to middle-aged women (20-50 years of age). While FMD often involves the renal arteries, it can affect any arterial bed. FMD has a characteristic angiographic appearance of a "string of beads.
View Article and Find Full Text PDFResearch on predicting radiographic exposure time in imaging based on neural network prediction models.
Clin Neurol Neurosurg
January 2025
The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China. Electronic address:
Objective: To explore the anatomical and clinical factors that affect the radiographic exposure time in radial artery cerebral angiography and to establish a model.
Method: A total of 210 patients who underwent radial artery cerebral angiography at this center from September 2021 to May 2022 were selected, and their anatomical and clinical factors were analyzed to evaluate the correlation between these factors and the duration of radiographic exposure. A related neural network prediction model was established.
Short common trunk of the occipital artery and ascending pharyngeal artery arising from the internal carotid artery diagnosed by magnetic resonance angiography.
Surg Radiol Anat
January 2025
Department of Neurosurgery, Saitama Sekishinkai Hospital, 2-37-20 Irumagawa, Sayama, Saitama, 350-1305, Japan.
Purpose: To describe a case of short common trunk of the occipital artery (OA) and ascending pharyngeal artery (APA) arising from the internal carotid artery (ICA).
Methods: A 36-year-old woman with a history of surgical resection of a right lateral ventricular meningioma and atheromatous plaque of the right ICA underwent cranial magnetic resonance (MR) imaging and MR angiography of the head and neck region with a 3-Tesla scanner.
Results: MR angiography of the neck region showed a small atheromatous plaque at the origin of the right ICA and an anomalous artery arising from the posteromedial aspect of the right ICA at the distal end of the carotid bulb.
Programmable scanning diffuse speckle contrast imaging of cerebral blood flow.
Neurophotonics
January 2025
University of Kentucky, Department of Biomedical Engineering, Lexington, Kentucky, United States.
Significance: Cerebral blood flow (CBF) imaging is crucial for diagnosing cerebrovascular diseases. However, existing large neuroimaging techniques with high cost, low sampling rate, and poor mobility make them unsuitable for continuous and longitudinal CBF monitoring at the bedside.
Aim: We aimed to develop a low-cost, portable, programmable scanning diffuse speckle contrast imaging (PS-DSCI) technology for fast, high-density, and depth-sensitive imaging of CBF in rodents.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!