Results 11 to 20 of about 5,193,269 (304)

Comparison of Non-Contrast CT vs. Contrast-Enhanced CT with Both Intravenous and Rectal Contrast Application for Diagnosis of Acute Colonic Diverticulitis: A Multireader, Retrospective Single-Center Study

open access: yesDiagnostics
Objectives: To evaluate the non-inferiority of non-contrast CT compared to contrast-enhanced CT with both intravenous and rectal contrast application for the diagnosis of acute colonic diverticulitis.
Dorottya Móré   +9 more
doaj   +2 more sources

Contrast-enhanced CT- and MRI-based perfusion assessment for pulmonary diseases: basics and clinical applications [PDF]

open access: yesDiagnostic and Interventional Radiology, 2016
Assessment of regional pulmonary perfusion as well as nodule and tumor perfusions in various pulmonary diseases are currently performed by means of nuclear medicine studies requiring radioactive macroaggregates, dual-energy computed tomography (CT), and ...
Yoshiharu Ohno   +5 more
doaj   +2 more sources

Use of full-dose contrast-enhanced CT for extrahepatic staging using Gallium-68-DOTATATE PET/CT in patients with neuroendocrine tumors [PDF]

open access: yes, 2021
PURPOSEStudies have demonstrated that positron emission tomography/computed tomography (PET/CT) with Gallium-68 (68Ga)-labeled somatostatin analogues are effective at detecting metastatic disease in neuroendocrine tumors (NET), especially extrahepatic ...
Mottaghy, Felix   +8 more
core   +1 more source

Patterns and Structure of Calcification in Aortic Stenosis: An Approach on Contrast-Enhanced CT Images

open access: yes, 2023
Procedural  planning  for  transcatheter  aortic  valvereplacement  (TAVR)  is  routinely  performed  usingcontrast computed tomography (CT) in patients withsevere aortic stenosis (AS).
MA Daeian (17546883)   +7 more
core   +4 more sources

Convolutional neural network-based automatic liver delineation on contrast-enhanced and non-contrast-enhanced CT images for radiotherapy planning [PDF]

open access: yes, 2020
AimThis study evaluated a convolutional neural network (CNN) for automatically delineating the liver on contrast-enhanced or non-contrast-enhanced CT, making comparisons with a commercial automated technique (MIM Maestro®).BackgroundIntensity-modulated ...
Sakashita, Naohiro; Department of Radiation Oncology, Osaka International Cancer Institute, Osaka, Japan   +9 more
core   +1 more source

Validation of a Length-Adjusted Abdominal Arterial Calcium Score Method for Contrast-Enhanced CT Scans

open access: yesDiagnostics, 2023
Background: The Agatston score on noncontrast computed tomography (CT) scans is the gold standard for calcium load determination. However, contrast-enhanced CT is commonly used for patients with atherosclerotic cardiovascular diseases (ASCVDs), such as ...
Raul Devia-Rodriguez   +8 more
doaj   +1 more source

Imaging Misdiagnosis Analysis of a Rare Case of Renal Subcapsular Hematoma Located in the Renal Hilum and Collecting Area

open access: yesUrology Case Reports, 2014
We report a rare case of renal subcapsular hematoma, which was located in the renal hilum and collecting area. Preoperative ultrasonography, retrograde urethrography, and computed tomographic examinations misdiagnosed the patient with simple ...
Biqiang Li   +4 more
doaj   +1 more source

Association between contrast enhancement on contrast‑enhanced CT and lenvatinib effectiveness in hepatocellular carcinoma

open access: yesMolecular and Clinical Oncology, 2021
The aim of the present study was to investigate whether the degree of contrast enhancement on contrast-enhanced (CE)-CT can predict the prognosis of patients with hepatocellular carcinoma (HCC) treated with lenvatinib (LEN). A total of 67 consecutive patients with LEN-treated HCC were retrospectively analysed.
Okamura, Shusuke   +10 more
openaire   +3 more sources

Focal Lesions of the Liver and Radiomics: What Do We Know?

open access: yesDiagnostics, 2023
Despite differences in pathological analysis, focal liver lesions are not always distinguishable in contrast-enhanced magnetic resonance imaging (MRI), contrast-enhanced computed tomography (CT), and positron emission tomography (PET).
Matilde Anichini   +6 more
doaj   +1 more source

Toward clinical X-ray phase-contrast CT: demonstration of enhanced soft-tissue contrast in human specimen

open access: yes, 2010
X-ray computed tomography (CT) using phase contrast can provide images with greatly enhanced soft-tissue contrast in comparison to conventional attenuation-based CT. We report on the first scan of a human specimen recorded with a phase-contrast CT system
Vock, Peter   +32 more
core   +1 more source

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