Articles with "non contrast" as a keyword



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Deep learning derived automated ASPECTS on non‐contrast CT scans of acute ischemic stroke patients

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Published in 2022 at "Human Brain Mapping"

DOI: 10.1002/hbm.25845

Abstract: Ischemic stroke is the most common type of stroke, ranked as the second leading cause of death worldwide. The Alberta Stroke Program Early CT Score (ASPECTS) is considered as a systematic method of assessing ischemic… read more here.

Keywords: automated aspects; contrast scans; non contrast; dataset ... See more keywords
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Hippocampus Segmentation on non-Contrast CT using Deep Learning.

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Published in 2020 at "Medical physics"

DOI: 10.1002/mp.14098

Abstract: Accurate segmentation of the hippocampus for hippocampal avoidance whole brain radiotherapy currently requires high resolution MRI in addition to neuroanatomic expertise for manual segmentation. Removing the need for MR images to identify the hippocampus would… read more here.

Keywords: segmentation; hippocampus; deep learning; non contrast ... See more keywords
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Deep Learning-Based 3D MRI Contrast-Enhanced Synthesis From A 2D Non-contrast T2Flair Sequence Deep Learning, MR images Synthesis.

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Published in 2022 at "Medical physics"

DOI: 10.1002/mp.15636

Abstract: PURPOSE Gadolinium-based contrast agents (GBCAs) have been successfully applied in magnetic resonance (MR) imaging to facilitate better lesion visualization. However, gadolinium deposition in the human brain raised widespread concerns recently. On the other hand, although… read more here.

Keywords: contrast; synthesis; non contrast; contrast t2flair ... See more keywords
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Clues to vascular disorders at non-contrast CT of the chest, abdomen, and pelvis

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Published in 2017 at "Abdominal Radiology"

DOI: 10.1007/s00261-017-1113-8

Abstract: Non-contrast chest CT scans are commonly performed while CT scans of the abdomen and pelvis are performed in a select subset of patients; those with limited renal function, an allergy to iodinated contrast, in the… read more here.

Keywords: vascular disorders; contrast; abdomen pelvis; non contrast ... See more keywords
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Non-contrast MR lymphography of the lymphatic system of the liver

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Published in 2019 at "European Radiology"

DOI: 10.1007/s00330-019-06151-6

Abstract: AbstractThis review shows the images obtained with non-contrast MR lymphography in different pathologic conditions affecting the liver. Non-contrast MR lymphography is obtained with a free-breathing 3D high spatial resolution fast-recovery fast spin-echo sequence similar to… read more here.

Keywords: anatomy; liver; physiology; non contrast ... See more keywords
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A radiomic nomogram for prediction of major adverse cardiac events in ST-segment elevation myocardial infarction

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Published in 2020 at "European Radiology"

DOI: 10.1007/s00330-020-07176-y

Abstract: Objectives This study was conducted to establish and validate a non-contrast T1 map–based radiomic nomogram for predicting major adverse cardiac events (MACEs) in patients with acute ST-segment elevation myocardial infarction (STEMI) undergoing percutaneous coronary intervention… read more here.

Keywords: acute stemi; segment; non contrast; prediction ... See more keywords
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Comparison of various reconstructions derived from dual-energy CT immediately after endovascular treatment of acute ischemic stroke in predicting hemorrhage

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Published in 2021 at "European Radiology"

DOI: 10.1007/s00330-020-07574-2

Abstract: Predicting 24-h hemorrhage immediately after endovascular treatment (EVT) of ischemic stroke is important but difficult for clinicians. We thus aimed to identify better image markers in predicting hemorrhage from different reconstructions derived from dual-energy CT.… read more here.

Keywords: ischemic stroke; hemorrhage; non contrast; parenchymal hyperdensities ... See more keywords
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Toward automated segmentation for acute ischemic stroke using non-contrast computed tomography

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Published in 2022 at "International Journal of Computer Assisted Radiology and Surgery"

DOI: 10.1007/s11548-022-02570-x

Abstract: Non-contrast computed tomography (NCCT) is a first-line imaging technique for determining treatment options for acute ischemic stroke (AIS). However, its poor contrast and signal-to-noise ratio limit the diagnosis accuracy for radiologists, and automated AIS lesion… read more here.

Keywords: lesion segmentation; segmentation; non contrast; model ... See more keywords
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Convolutional neural network in nasopharyngeal carcinoma: how good is automatic delineation for primary tumor on a non-contrast-enhanced fat-suppressed T2-weighted MRI?

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Published in 2021 at "Japanese Journal of Radiology"

DOI: 10.1007/s11604-021-01092-x

Abstract: Convolutional neural networks (CNNs) show potential for delineating cancers on contrast-enhanced MRI (ce-MRI) but there are clinical scenarios in which administration of contrast is not desirable. We investigated performance of the CNN for delineating primary… read more here.

Keywords: tumor; delineation; contrast; non contrast ... See more keywords
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Assessment of Non-contrast-enhanced Dixon Water-fat Separation Compressed Sensing Whole-heart Coronary MR Angiography at 3.0 T: A Single-center Experience.

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Published in 2021 at "Academic radiology"

DOI: 10.1016/j.acra.2021.05.009

Abstract: RATIONALE AND OBJECTIVES The clinical utility of Dixon water-fat separation coronary MR angiography (CMRA) with compressed sensing (CS) reconstruction has not been determined in a patient population. This study was designed to evaluate the performance… read more here.

Keywords: fat separation; dixon water; non contrast; water fat ... See more keywords
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Qualitative and quantitative radiological analysis of non‐contrast CT is a strong indicator in patients with acute pyelonephritis

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Published in 2018 at "American Journal of Emergency Medicine"

DOI: 10.1016/j.ajem.2017.09.026

Abstract: Objective: To evaluate the performance of non‐contrast computed tomography (CT) by reporting the difference in attenuation between normal and inflamed renal parenchyma in patients clinically diagnosed with acute pyelonephritis (APN). Material and methods: This is… read more here.

Keywords: attenuation; non contrast; mean attenuation; kidney ... See more keywords