Publications by authors named "Fleur van Raamt"
Article Synopsis
- The study aimed to see if the order in which mammograms are read, based on their characteristics, could help radiologists spot abnormalities more efficiently, particularly focusing on factors like breast density and visual adaptation.
- A total of 150 mammograms were analyzed by 13 radiologists using three reading methods: random order, increasing volumetric breast density (VBD), and self-supervised learning (SSL) grouping.
- Results indicated that readings organized by increasing VBD led to slightly better performance and reduced reading time compared to random order, without affecting sensitivity and specificity significantly.
Article Synopsis
- Multiple studies have indicated that high contralateral parenchymal enhancement (CPE) in breast MRI may improve long-term survival rates for patients with ER-positive, HER2-negative breast cancer, but more research is needed due to inconsistent findings.
- This study aimed to validate the connection between CPE and long-term survival using a large group of women with specific breast cancer characteristics, examining overall survival (OS), recurrence-free survival (RFS), and distant RFS (DRFS).
- Results showed that higher CPE was linked to better OS rates after 10 years, but it didn't significantly impact RFS or DRFS; additionally, the effect of endocrine therapy in relation to CPE couldn't be determined accurately.
Background: Preoperative sarcopenia in older patients is a risk factor for adverse outcomes after colorectal cancer (CRC) surgery. Longitudinal changes in muscle mass in this group have not been studied previously although muscle wasting may have prognostic significance regarding survival. We aimed to determine the association between muscle wasting and overall survival (OS) in older patients who underwent surgery for CRC.
View Article and Find Full Text PDFRationale And Objectives: The psychometric characteristics of image-based test items in radiological written examinations are not well known. In this study, we explored difficulty and discriminating power of these test items in postgraduate radiological digital examinations.
Materials And Methods: We reviewed test items of seven Dutch Radiology Progress Tests (DRPTs) that were taken from October 2013 to April 2017.
Background: It is unclear whether the metabolic syndrome (MetS) increases risk of cognitive dysfunction beyond the level expected from its individual components. We examined the association of MetS with cognitive dysfunction and assessed whether MetS increased risk of cognitive dysfunction more than that of the sum of its individual components.
Methods: Data on 823 participants were used from the SMART-study, a cohort study among patients with atherosclerotic disease.
Objective: Recent reports of animal models have shown that growth factors have stimulating effect on brain perfusion via the development of blood vessels. However, studies on the effect of growth factors on brain perfusion in humans are lacking. The aim of our study was to prospectively investigate in humans the relation between growth factors and brain perfusion.
View Article and Find Full Text PDFPurpose: To retrospectively investigate which characteristics are related to total arterial blood flow to the brain in patients with symptomatic vascular disease.
Materials And Methods: The study was approved by the ethics committee of the authors' institution, and written informed consent was obtained. The total volume flow rate (tVFR) values in the internal carotid arteries and the basilar artery in 636 patients (536 men, 100 women; mean age, 58 years) with symptomatic vascular disease were measured with two-dimensional phase-contrast magnetic resonance (MR) angiography.
In a fetal-type posterior circle of Willis (FTP) there is an embryonic derivation of the posterior cerebral artery (PCA) from the internal carotid artery (ICA). Besides the fact that a larger area is thus dependent on the ICA, leptomeningeal vessels cannot develop between the anterior and posterior circulation. The tentorium namely prevents cerebellar vessels from connecting to the PCA territory.
View Article and Find Full Text PDFObjectives: To assess the relationship between total plasma homocysteine (tHcy) level and cognitive function in patients with manifest arterial disease.
Design: Cross-sectional.
Setting: Patients with symptomatic cerebrovascular disease, cardiovascular disease, peripheral arterial disease, or abdominal aortic aneurysm included in the Second Manifestations of ARTerial disease study, a single-center, longitudinal study with an extensive screening program at baseline.
Purpose: To prospectively determine the effect of anatomic variations in the circle of Willis on volume flow in the internal carotid arteries (ICAs) and basilar artery (BA).
Materials And Methods: Institutional review board approval and informed consent were obtained. Phase-contrast magnetic resonance (MR) angiography was used to measure the volume flow in the BA and ICAs in 208 patients (182 men, 26 women; mean age, 60 years) with symptomatic atherosclerosis or risk factors for atherosclerosis.