Results 1 - 10 of 5795
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[en] Highlights: • In univariate analysis, age and type of surgical resection were meaningful prognostic variables. • From non-enhancing peritumoral edema, five relevant radiomic features were retrieved. • Radiomic features showed added prognostic value when combined with clinical features. - Abstract: Purpose: On MR imaging, peritumoral T2 hyperintensity surrounding glioblastoma is known to contain tumor cell infiltrates, thus contributing to poor prognosis. This study aimed to determine the incremental prognostic value of radiomics on peritumoral T2 hyperintensity in pretreatment glioblastoma.
[en] Highlights: • Volumetry is the preferred method to assess nodule size in lung cancer screening. • Volumetry application suitability for screening depends on the chosen guideline. • Nodule size overestimation by one software package led to excessive recall rates. - Abstract: Purpose: Appropriate lung nodule management is essential to minimizing unnecessary patient recall in lung cancer screening. Two European guidelines provide differing recommendations in that participants with nodules ≥100 mm3 or ≥80 mm3 respectively should be recalled, at baseline. Nodule size estimation is known to vary between volumetry software packages (VSPs). The aim of this study was to examine the impact of choice of VSP on participant recall rates, when applying different European nodule management guidelines. An additional aim was to compare recall rates between 7 VSPs and manual diameter measurements.
[en] Highlights: • Compressed SENSE accelerated 3D T1w black blood TSE MR sequences function well. • Adjusting MR protocols with Compressed SENSE enables reduction of scan times. • The black blood technique may aid in reduction of pulsation artefacts. - Abstract: PurposeTo compare image quality between a 2D T1w turbo spin echo (TSE) sequence and a Compressed SENSE accelerated 3D T1w black blood TSE sequence (equipped with a black blood prepulse for blood signal suppression) in pre- and postcontrast imaging of the pituitary and to assess scan time reductions.
[en] Highlights: • No consensus about the first treatment of active lower intestinal bleeding exists. • Actively bleeding patients treated by angiography are older than surgical patients. • Hemodynamic values of interventional patients do not differ from surgical patients. • Angioembolisation should be the first choice in active lower intestinal bleeding. - Abstract: Purpose: To determine radiological or clinical criteria guiding treatment decisions in active lower gastrointestinal bleeding (LGIB).
[en] Highlights: • Ovarian cancer disseminates by the peritoneum with high mortality associated. • Cytoreduction surgery with residual tumour • Peritoneal Cancer Index (PCI) provides information about peritoneal tumour burden. • Diffusion MRI provides better diagnostic performance than reported for CT or PET/CT. • Diffusion MR PCI correlates with surgical PCI and with residual tumour after cytoreduction. - Abstract: PurposeOvarian cancer (OC) is the commonest cause of death by gynaecological cancer in developed countries. Peritoneal carcinomatosis (PC) complete debulking without residual disease of >1 cm is the best prognostic predictor in advanced OC. PC is assessed with Computed tomography (CT). CT accuracy and cytoreduction success predictive ability are limited. PET/CT is not an imaging standard for PC. PC shows high signal foci in Diffusion-weighted magnetic resonance imaging (DWI MRI). We assessed the diagnostic performance (DP) and tumour burden correlation of Whole body DWI with background suppression MRI (WB-DWIBS/MRI) in PC of suspected OC using the Peritoneal Cancer Index (PCI), referring to cytoreduction surgery as the standard reference.
[en] Highlights: • CPE and ER-pathway activity were previously shown to be prognostic biomarkers. • We did not find an association between CPE and ER-pathway activity. • Future research should address their complementary value with respect to survival. - Abstract: Purpose: To retrospectively explore the relation between parenchymal enhancement of the healthy contralateral breast on dynamic contrast-enhanced magnetic resonance imaging (MRI) and genomic tests for estrogen receptor (ER)-pathway activity in patients with ER-positive/HER2-negative cancer.
[en] Highlights: • EAT volume quantification was acceptable in low-kV and contrast-enhanced images. • Adjustment of the upper threshold (UT) for detection of fat is mandatory. • Closest results were for −40HU/100 kV non-contrast and 0HU/contrast-enhanced images. - Abstract: Purpose: While computed tomography (CT) is frequently used to quantify epicardial adipose tissue (EAT), the effect of different acquisition parameters on EAT volume has not been systematically reported. We assessed the influence of low-voltage acquisition and contrast enhancement on EAT quantification.
[en] Highlights: • APT values were higher for neonates with mild HIE than healthy control. • APT values were exhibited a linear, positive correlation with gestational age in healthy control. • APT imaging is a feasible technique with diagnostic capability for neonatal HIE. - Abstract: Purpose: This study aimed to evaluate the amide proton transfer (APT) values in neonates with mild hypoxic-ischemic encephalopathy (HIE) using APT imaging.
[en] Highlights: • Split bolus protocols may be suitable for pancreatic- and cholangiocarcinoma. • The split bolus protocol provides sufficient levels of diagnostic accuracy. • Split bolus protocol is equal to the multiphase protocol regarding image quality. • The split bolus protocol lowers the radiation exposure significantly. • Split bolus protocols in computed tomography are easy and safe to perform. - Abstract: Purpose: To investigate the image quality, diagnostic accuracy, and dose reduction potential of a split-bolus protocol(SBP) compared with a multiphasic protocol(MPP) in the detection of recurrent or progressive pancreatic ductal adenocarcinoma(PDAC) or cholangiocarcinoma(CC) using contrast- enhanced computed tomography(CECT).
[en] Radiologists often encounter imaging requisitions that lack important information needed for accurate diagnostic studies. Reason for exam Imaging Reporting and Data System (RI-RADS) is proposed as a grading system for evaluation of the quality of clinically pertinent information provided in imaging requisitions. Three categories of information are suggested as key indicators of quality: impression, clinical findings, and the diagnostic question. This scheme is intended to improve the quality of imaging requisitions and overall patient care.