We describe a method to perform postacquisition processing of computed tomography colonography (virtual colonoscopy) datasets that results in electronic removal of opacified, ingested bowel contents while reconstructing natural appearing boundaries of colon lumen and thereby permitting three-dimensional visual analyses of the resulting colon models.
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http://dx.doi.org/10.1109/TMI.2004.826050 | DOI Listing |
J Neurointerv Surg
January 2025
Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
Basilar artery perforator aneurysms (BAPAs) are rare and may be occult on initial imaging due to their small size and susceptibility to intermittent thrombosis.1 2 Conventional treatments for aneurysms (eg, clipping or coiling) have proved challenging.3 Recently, endovascular electrocoagulation has been shown to be effective for BAPAs.
View Article and Find Full Text PDFJ Clin Ultrasound
January 2025
Argentinian Critical Care Ultrasonography Association (ASARUC), Buenos Aires, Argentina.
Fibromuscular dysplasia (FMD) is a rare, non-atherosclerotic vascular disease affecting medium to large arteries, especially the renal and internal carotid arteries (ICAs). The string-of-beads appearance, indicative of alternating areas of stenosis and dilatation, is a key imaging feature typically observed in the distal ICAs. Diagnosing FMD in critically ill patients poses challenges due to the risks associated with traditional imaging methods such as computed tomography angiography (CTA), magnetic resonance angiography, and digital subtraction angiography.
View Article and Find Full Text PDFClin Neuroradiol
January 2025
Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, 150, Seongan-ro Gangdong-Gu, Seoul, Korea (Republic of).
Purpose: To compare the diagnostic accuracy of CT angiography (CTA), MR angiography (MRA), and their combined use for detecting unruptured intracranial aneurysms (UIAs).
Methods: Between September 2019 and August 2023, 235 patients suspected of having UIA underwent CTA, MRA, and digital subtraction angiography (DSA)/3-dimensional rotational angiography (3DRA). Two neuroradiologists retrospectively reviewed these images for UIA presence.
J Vasc Access
January 2025
Division of Nephrology, West China Hospital of Medicine, Chengdu, Sichuan, China.
This case report describes a surgical treatment combined with interventional therapy for a patient with refractory hemodialysis access combined with catheter-related right atrial thrombosis (CRAT). During surgery, an artificial graft was established from the left brachiocephalic vein to the right atrium and the right atrial thrombus was removed. After the operation, the tunneled cuffed catheter (TCC) was replaced with digital subtraction angiography (DSA).
View Article and Find Full Text PDFLaryngoscope Investig Otolaryngol
February 2025
Objective: The primary aim of this study was to investigate the accuracy of a semi-automatic algorithm in assessing the feasibility and complexity of endoscopic stapes surgery preoperatively.
Methods: A semi-automatic algorithm was developed to simulate endoscopic stapes surgery in 3D. To test the accuracy of the algorithm, five fresh-frozen cadaveric heads (ten ears) were used.
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