Objectives: To compare right gastric (RGA) and segment 4 artery (A4) origin detection rates during radioembolisation workup between early and late arterial phase liver CT protocols.
Methods: 100 consecutive patients who underwent liver CT between May 2012-January 2015 with early or late arterial phase protocol (n = 50 each, 10- vs. 20-s post-threshold delay) were included. RGA/A4 origin detection rates, assessed by two raters, and contrast-to-noise ratio (CNR) of the hepatic artery relative to the portal vein were compared between the protocols.
Results: The first-second rater scored the RGA origin as visible in 58-65 % (specific proportion of agreement 82 %, κ = 0.62); A4 origin in 96-89 % (94 %, κ = 0.54). Thirty-six percent of RGA origins not detectable by DSA were identified on CT. Origin detection rates were not significantly different for early/late arterial phases. Mean CNR was higher in the early arterial phase protocol (1.7 vs. 1.2, p < 0.001).
Conclusion: A 10-s delay arterial phase CT protocol does not significantly improve detection of small intra- and extrahepatic branches. RGA origin detection requires further optimization, whereas A4/MHA origin detection is adequate, with good inter-rater reproducibility. CT remains important for preprocedural planning, because it may reveal arterial anatomy not discernible on DSA.
Key Points: • An early arterial phase does not significantly improve RGA and A4/MHA origin detection. • RGA origin detection (58-65 %) on CT is still suboptimal. • 36 % of RGA origins undetectable on DSA can be identified on CT. • A4/MHA origin detection (89-96 %) on CT is excellent. • Inter-rater reproducibility is good for RGA and A4/MHA origin detection on CT.
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http://dx.doi.org/10.1007/s00330-016-4343-1 | DOI Listing |
Front Oncol
December 2024
Medical Imaging Center, The first Affiliated Hospital of Jinan University, Guangzhou, China.
Purpose: This study aims to evaluate the effectiveness of CT-based radiomics features in discriminating between nodular goiter (NG) and papillary thyroid carcinoma (PTC).
Methods: A retrospective cohort comprising 228 patients with nodular goiter (NG) and 227 patients with papillary thyroid carcinoma (PTC) diagnosed between January 2018 and December 2022 was consecutively enrolled. Propensity score matching (PSM) was applied to align patients with NG and PTC.
Acta Radiol
December 2024
Department of Radiology, Bishan Hospital of Chongqing Medical University, Chongqing, PR China.
Background: Spread through air spaces (STAS) is a well-established factor associated with poor oncological outcomes in patients undergoing surgery for solid lung adenocarcinoma. There could potentially be a disparity in iodine uptake between patients with positive and negative airway spread of solid lung adenocarcinoma.
Purpose: To explore the associations and find correlations of iodine uptake with STAS status in patients who underwent surgery for solid lung adenocarcinoma.
Neuroimage
December 2024
Medical Image Processing Department, CHU Amiens-Picardie University Hospital, Amiens, France; CHIMERE UR 7516, University of Picardie Jules Verne, Amiens, France. Electronic address:
Understanding cerebrospinal fluid (CSF) dynamics is crucial for elucidating the pathogenesis and diagnosis of neurodegenerative diseases. The primary mechanisms driving CSF oscillations remain a topic of debate. This study investigates whether cerebral blood volume displacement (CBV), modulated by breathing and cardiac activity, are the predominant drivers of CSF oscillations.
View Article and Find Full Text PDFActa Neurol Belg
December 2024
Department of Neurology, School of Medicine, The 2nd Affiliated Hospital of Zhejiang University, #88 Jiefang Road, Hangzhou, China.
Ischemic stroke, accounting for approximately 80% of all stroke cases, remains a leading cause of death and disability worldwide. Effective management of ischemic stroke is heavily influenced by its etiology, which can range from large-artery atherosclerosis and cardiac embolism to cerebral small-vessel occlusions and cryptogenic strokes. Cardioembolic stroke, which makes up about 30% of ischemic strokes, often leads to more severe symptoms and worse outcomes, necessitating anticoagulation therapy for prevention.
View Article and Find Full Text PDFFront Oncol
December 2024
Department of Hepatobiliary Surgery, Jiujiang City Key Laboratory of Cell Therapy, Jiujiang No.1 People's Hospital Jiujiang, Jiujiang, Jiangxi, China.
Preoperative diagnosis of Gallbladder squamous cell carcinoma (GBSCC) is difficult, and the contrast-enhanced ultrasound (CEUS) pattern has never been reported before. We present a case of GBSCC where CEUS revealed special findings that facilitated early diagnosis. CEUS demonstrated irregular peripheral ring-like enhancement during the arterial phase, with hypoenhancement in the late phases, and an irregular non-enhancing area persistently present in the center of the lesion.
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