Automatic detection of anatomical landmarks of the aorta in CTA images

This study demonstrates the feasibility of a fully automated technology for the accurate detection and identification of several anatomical reference points (landmarks), commonly used in intravascular imaging. This technology uses two different approaches, specially designed for the detection of aortic root and supra-aortic and visceral branches. In order to adjust the parameters of the developed algorithms, a total of 33 computed tomography scans with different types of pathologies were selected. Furthermore, a total of 30 independently selected computed tomography scans were used to assess their performance. Accuracy was evaluated by comparing the locations of reference points manually marked by human experts with those that were automatically detected. For supra-aortic and visceral branches detection, average values of 91.8 % for recall and 98.8 % for precision were obtained. For aortic root detection, the average difference between the positions marked by the experts and those detected by the computer was 5.7 ± 7.3 mm. Finally, diameters and lengths of the aorta were measured at different locations related to the extracted landmarks. Those measurements agreed with the values reported by the literature.Graphical abstractSchematic description of the proposed algorithm. The input includes an already segmented aorta (left), there are two main sub-processes related to the detection of branches and roots (center), and the output includes the segmented original aorta with...
Source: Medical and Biological Engineering and Computing - Category: Biomedical Engineering Source Type: research

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CONCLUSION: The absence of vasospasm in the first DSA performed in patients with SAH and negative tomographic angiography could be a useful criterion for establishing an optimal follow-up protocol in these patients, without exposing them to unnecessary risks and radiation. PMID: 32242335 [PubMed - in process]
Source: Revista de Neurologia - Category: Neurology Authors: Tags: Rev Neurol Source Type: research
CONCLUSION: Penetrating trauma in children and adolescents is associated with significant mortality and morbidity. There are similarities with the management of these injuries in adults, but further work is required to ensure that paediatric management algorithms are evidence based. PMID: 32243113 [PubMed - as supplied by publisher]
Source: South African Journal of Surgery - Category: Surgery Tags: S Afr J Surg Source Type: research
Conclusion The RRI, a sub-clinical renal parameter is an atherosclerotic marker in patients without renal impairment. PMID: 32238661 [PubMed - as supplied by publisher]
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Abstract No study has evaluated the impact of different iodinated contrast media on coronary contrast enhancement, using an injection protocol according to body surface area (BSA). Thus, the present study aimed to examine the usefulness and safety of personalized application of different iodine concentrations of contrast media in coronary computed tomographic (CT) angiography with a 2nd dual-source CT scanner in eliminating differences in coronary contrast enhancement based on a BSA-adapted injection protocol of contrast media. A total of 270 enrolled participants were randomly assigned to three groups: ioversol 3...
Source: J Cell Mol Med - Category: Molecular Biology Authors: Tags: J Cell Mol Med Source Type: research
By STEPHEN BORSTELMANN, MD Occasionally, you get handed a question you know little about, but it’s clear you need to know more.  Like most of us these days, I was chatting with my colleagues about the novel coronavirus. It goes by several names: SARS-CoV-2, 2019-nCoV or COVID-19 but I’ll just call it COVID.  Declared a pandemic on March 12, 2020 by the World Health Organization (WHO), COVID is diagnosed by laboratory test – PCR.  The early PCR test used in Wuhan was apparently low sensitivity (30-60%), lengthy to run (days), and in short supply.  As CT scanning was relatively availa...
Source: The Health Care Blog - Category: Consumer Health News Authors: Tags: COVID-19 Hospitals Medical Practice Physicians coronavirus CT scans Imaging infecton control Pandemic Radiology Stephen Borstelmann Source Type: blogs
CONCLUSIONS: CTA in FFBR can have a wider impact than facilitating surgical planning and reducing operative times. Incidental findings can influence the surgical plan, and in some instances, avoid doomed-to-fail and unsafe surgery. It is therefore important that these scans are reported by an experienced radiologist. PMID: 32203991 [PubMed]
Source: Archives of Plastic Surgery - Category: Cosmetic Surgery Tags: Arch Plast Surg Source Type: research
Publication date: Available online 21 March 2020Source: Academic RadiologyAuthor(s): Liang Jin, Yiyi Gao, An'qi Jiang, Zhenlin Li, Peijun Wang, Ming Li
Source: Academic Radiology - Category: Radiology Source Type: research
We present a case of a 15-year-old boy who was stabbed with a bamboo stick in his left eye. The chopsticks passed through the orbit roof and penetrated the skull base. In subsequent days, the patient sustained CSF leak and intracranial infection after an unsatisfied primary treatment in the local hospital and had to request a secondary operation in our department. Computed tomography including plain scan, three dimension reconstruction and computed tomographic angiography are used to determine the course and extent of head injury. A frontal craniotomy was performed. Three pieces of stick were found residual and removed wit...
Source: Chinese Journal of Traumatology - Category: Orthopaedics Authors: Tags: Chin J Traumatol Source Type: research
We report a case of a 74-year-old man with inferior epigastric artery (IEA) pseudoaneurysm secondary to an 8-mm port placement during a robot-assisted laparoscopic radical cystectomy with ureteroileocutaneostomy. The pseudoaneurysm was initially diagnosed by contrast-enhanced ultrasound (CEUS); subsequently, a computed tomography (CT) scan and an angiography test were performed. The pseudoaneurysm was then treated successfully with embolization of the inferior epigastric artery. Awareness of this rare complication is of clinical importance to avoid excessive morbidity of affected individuals.
Source: Journal of Ultrasound - Category: Radiology Source Type: research
Authors: Pérez Fernández A, Palomares Ortiz G, Pérez-Cuadrado Martínez E Abstract A 40-year-old male presented to the Emergency Department after a driving accident with blunt abdominal trauma. An abdominal computed tomography (CT) scan revealed a mesenteric injury in the right lower quadrant. He was admitted two months later due to a one-day history of abdominal pain and diarrhea, without fever or blood. The CT angiography showed a pseudoaneurysm located in the proximal ileum and several rigid small bowel (SB) loops with segmental wall thickening of mucosa. PMID: 32122146 [PubMed - a...
Source: Revista Espanola de Enfermedades Digestivas - Category: Gastroenterology Tags: Rev Esp Enferm Dig Source Type: research
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