Monoplane 3D-2D registration of cerebral angiograms based on multi-objective stratified optimization.

The objective for matching was gradient magnitude correlation coefficient, which is invariant to in-plane translation. The in-plane translations are then found by locating the maximum of gradient phase correlation between the best matching pair of rotation and depth templates. On twenty pairs of 3D and 2D images of ten patients undergoing cerebral endovascular image-guided intervention the 3D to monoplane 2D registration experiments were setup with rather high range of initial mean target registration error from 0 to 100 mm. The proposed method effectively reduced the registration error to below 2 mm, which was further refined by a fast iterative method and resulted in a high final registration accuracy (0.40 mm) and high success rate (>96%). Taking into account a fast execution time below 10 seconds, the observed performance of the proposed method shows a high potential for application into clinical image-guidance systems. PMID: 29045237 [PubMed - as supplied by publisher]
Source: Physics in Medicine and Biology - Category: Physics Authors: Tags: Phys Med Biol Source Type: research

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Publication date: Available online 17 September 2019Source: The Annals of Thoracic SurgeryAuthor(s): Sung Jun Park, Ho Jin Kim, Joon Bum Kim, Sung-Ho Jung, Suk Jung Choo, Jae Won Lee, Cheol Hyun ChungABSTRACTBackgroundAlthough multi-arterial grafting or bilateral mammary artery use is being increasingly emphasized more than ever for this contemporary CABG practice, saphenous vein graft (SVG) is still the most frequently used CABG conduit, accounting for 80% of all CABG conduits. Researches focusing on modifiable surgical factors such as anastomosis technique, however, has been scarcely conducted; this study aims to compare...
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Source Type: research
CONCLUSION: Despite early diagnosis and management of this rare injury, the prognosis for functional recovery is guarded and largely dictated by the extent of neurological injury in the setting of concomitant brachial plexopathy. Brachial plexopathy is highly associated with axillary artery injury and its impact often underestimated in comparison due to its non-limb-threatening nature in the acute setting. Future studies should focus on the long-term prognosis for functional recovery in patients with this rare injury pattern. PMID: 31525793 [PubMed - as supplied by publisher]
Source: Zeitschrift fur Orthopadie und Unfallchirurgie - Category: Orthopaedics Tags: Z Orthop Unfall Source Type: research
Conclusion: Vestibulocochlear symptoms such as SNHL, recurrent paroxysmal vertigo, or typewriter tinnitus can be precipitated from a neurovascular compression of the vestibulocochlear nerve by VBD. Because proper medical or surgical treatments may stop the disease progression or improve audio-vestibular symptoms in subjects with VBD, a high index of suspicion and meticulous radiologic evaluation are needed when vestibulocochlear symptoms are not otherwise explainable, and if VBD is confirmed to cause audiovestibular manifestation, a thorough oto-neurotologic evaluation should be performed before initial treatment. PMID...
Source: Clinical and Experimental Otorhinolaryngology - Category: ENT & OMF Tags: Clin Exp Otorhinolaryngol Source Type: research
Authors: McCool D, Butler C, Evans J, Aase C Abstract A 43-year-old female scuba diver was retrieved and treated following a rapid ascent and presumed cerebral arterial gas embolism (CAGE). She subsequently developed respiratory distress and was found to have Takotsubo cardiomyopathy, with transient left ventricular dysfunction, elevated cardiac enzymes, and normal CT coronary angiography. We believe this to be the first report of CAGE associated with Takotsubo cardiomyopathy. PMID: 31523799 [PubMed - in process]
Source: Diving and Hyperbaric Medicine - Category: Sports Medicine Tags: Diving Hyperb Med Source Type: research
Eye, Published online: 18 September 2019; doi:10.1038/s41433-019-0564-2Circumpapillary and macular vessel density assessment by optical coherence tomography angiography in eyes with temporal hemianopia from chiasmal compression. Correlation with retinal neural and visual field loss
Source: Eye - Category: Opthalmology Authors: Source Type: research
Background: Although transient cortical blindness is a rare complication following cerebral angiography, identification of risk factors for the development of transient cortical blindness after cerebral angiography is an important clinical issue.Material and methods: Between January 2008 and April 2018, 5,126 patients at five high-volume medical centers who underwent cerebral angiography procedures were enrolled in this multicenter cohort study. Patient baseline characteristics and surgery-related factors were analyzed. We used multivariate logistic regression to examine factors associated with transient cortical blindness...
Source: Frontiers in Neurology - Category: Neurology Source Type: research
Publication date: Available online 16 September 2019Source: Academic RadiologyAuthor(s): Morikatsu Yoshida, Takeshi Nakaura, Takada Sentaro, Shota Tanoue, Hatsuki Inada, Daisuke Utsunomiya, Naritsugu Sakaino, Kazunori Harada, Yasuyuki YamashitaRationale and ObjectivesTo compare the objective and subjective image qualities between single-energy computed tomography (CT) at 70 kVp and virtual monoenergetic imaging (VMI) of dual-source dual-energy CT for CT angiography with 180 mgI/kg.Materials and MethodsTotal 63 patients scanned with 180 mgI/kg were randomly divided into two groups: Group A (32 patients) underwent CT angiogr...
Source: Academic Radiology - Category: Radiology Source Type: research
Ulnar hemimelia is a rare congenital deformity. The severity of the deformity increases with the number of fingers that are absent. Clearly, grip function is impossible with a mono-finger hand. Here, we present a case report of a patient with bilateral ulnar hemimelia that included the absence of radial fingers and also deformity in the toes of his left foot. A toe-to-hand transfer was performed successfully to help the patient gain grip function. Both the patient and the parents were very pleased with the result. To our knowledge, this is the first case report of a patient with ulnar hemimelia and absent radial fingers wh...
Source: Annals of Plastic Surgery - Category: Cosmetic Surgery Tags: Microsurgery Source Type: research
Siemens Healthineers won FDA clearance for the ARTIS icono angiography systems that are designed for use in a variety of procedure types. The ARTIS icono 2D/3D biplane system is intended for neuroradiology and abdominal imaging while the ARTIS icono ...
Source: Medgadget - Category: Medical Devices Authors: Tags: Cardiac Surgery Cardiology Neurology Neurosurgery Oncology Radiology Thoracic Surgery Vascular Surgery Source Type: blogs
Guidelines and high-quality studies recommend using clinical decision-making (CDM) tools over clinical gestalt when evaluating a patient for pulmonary embolism. The purpose of this study is to investigate our computed tomography pulmonary angiogram (CTPA) utilization patterns and identify causal factors.
Source: Canadian Association of Radiologists Journal - Category: Radiology Authors: Tags: Trauma and Emergency Room Imaging / L ’imagerie des urgences et des traumatismes Source Type: research
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