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OsiriX

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https://www.readbyqxmd.com/read/28642647/comparison-between-rendering-3d-ct-and-transparent-3d-ct-in-acl-tunnel-positioning
#1
Marcos Amstalden Barros, Tiago Lazzaretti Fernandes, Dimitris Dimitriou, André Pedrinelli, Arnaldo José Hernandez
OBJECTIVE: To compare the transparent 3D computed tomography (CT) image protocol against conventional 3D-CT image-rendering protocol to assess femoral tunnel position in anatomic anterior cruciate ligament (ACL) reconstructions . METHODS: Eight knee CT scans from cadavers were analyzed by image rendering 3D-CT protocol, using Rhinoceros((r)) software. The central point of the ACL tunnel was set using the sagittal plane. Same CT scans were analyzed using transparent 3D-CT measurement protocol with OsiriX((r)) software...
January 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28616230/predictors-of-adamkiewicz-artery-and-anterior-spinal-artery-detection-through-computerized-tomographic-angiography
#2
Alexandre Campos Moraes Amato, Jose Rodrigues Parga Filho, Noedir Antonio Groppo Stolf
BACKGROUND: The detection of the Adamkiewicz artery and the anterior spinal artery has been associated with the ability to prevent adverse spinal cord outcomes after aortic surgical procedures. Yet, to our knowledge, no previous studies have attempted to use modern predictive models to identify the most important variables in determining artery detectability. AIMS: To develop a model to predict the odds of visualizing the Adamkiewicz artery or anterior spinal artery in patients undergoing computerized tomographic angiography...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/28598294/open-versus-percutaneous-instrumentation-in-thoracolumbar-fractures-magnetic-resonance-imaging-comparison-of-paravertebral-muscles-after-implant-removal
#3
Yves Ntilikina, David Bahlau, Julien Garnon, Sébastien Schuller, Axel Walter, Mickaël Schaeffer, Jean-Paul Steib, Yann Philippe Charles
OBJECTIVE Percutaneous instrumentation in thoracolumbar fractures is intended to decrease paravertebral muscle damage by avoiding dissection. The aim of this study was to compare muscles at instrumented levels in patients who were treated by open or percutaneous surgery. METHODS Twenty-seven patients underwent open instrumentation, and 65 were treated percutaneously. A standardized MRI protocol using axial T1-weighted sequences was performed at a minimum 1-year follow-up after implant removal. Two independent observers measured cross-sectional areas (CSAs, in cm(2)) and region of interest (ROI) signal intensity (in pixels) of paravertebral muscles by using OsiriX at the fracture level, and at cranial and caudal instrumented pedicle levels...
June 9, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28598220/bone-and-cortical-bone-thickness-of-mandibular-buccal-shelf-for-mini-screw-insertion-in-adults
#4
Riccardo Nucera, Antonino Lo Giudice, Angela Mirea Bellocchio, Paola Spinuzza, Alberto Caprioglio, Letizia Perillo, Giovanni Matarese, Giancarlo Cordasco
OBJECTIVE: To analyze the buccal bone thickness, bone depth, and cortical bone depth of the mandibular buccal shelf (MBS) to determine the most suitable sites of the MBS for mini-screw insertion. MATERIALS AND METHODS: The sample included cone-beam computed tomographic (CBCT) records of 30 adult subjects (mean age 30.9 ± 7.0 years) evaluated retrospectively. All CBCT examinations were performed with the i-CAT CBCT scanner. Each exam was converted into DICOM format and processed with OsiriX Medical Imaging software...
June 9, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28527841/a-comparison-of-2-and-3-dimensional-healing-assessment-after-endodontic-surgery-using-cone-beam-computed-tomographic-volumes-or-periapical-radiographs
#5
Tom Schloss, David Sonntag, Meetu R Kohli, Frank C Setzer
INTRODUCTION: The aim of this study was to compare the assessment of healing after endodontic microsurgery using 2-dimensional (2D) periapical films versus 3-dimensional (3D) cone-beam computed tomographic (CBCT) imaging. METHODS: The healing of 51 teeth from 44 patients was evaluated using Molven's criteria (2D) and modified PENN 3D criteria. The absolute area (2D) and volume (3D) changes of apical lesions preoperatively and at follow-up were calculated by segmentation using OsiriX software (Pixmeo, Bernex, Switzerland) and ITK-Snap (free software)...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28520562/reliability-and-repeatability-of-pulp-volume-reconstruction-through-three-different-volume-calculations
#6
T Y Marroquin Penaloza, S Karkhanis, S I Kvaal, S Vasudavan, E Castelblanco, E Kruger, M Tennant
OBJECTIVE: To test the variability of the volume measurements when different segmentation methods are applied in pulp volume reconstruction. MATERIALS AND METHODS: Osirix® and ITK-SNAP software were used. Different segmentation methods (Part A) and volume approaches (Part B) were tested in a sample of 21 dental CBCT's from upper canines. Different combinations of the data set were also tested on one lower molar and one upper canine (Part C) to determine the variability of the results when automatic segmentation is performed...
December 1, 2016: Journal of Forensic Odonto-stomatology
https://www.readbyqxmd.com/read/28510312/the-midbrain-to-pons-ratio-distinguishes-progressive-supranuclear-palsy-from-non-fluent-primary-progressive-aphasias
#7
M Silsby, R Y Tweedie-Cullen, C R Murray, G M Halliday, J R Hodges, J R Burrell
BACKGROUND AND PURPOSE: To determine the clinical utility of the midbrain-to-pons (M/P) ratio as a clinical biomarker of progressive supranuclear palsy (PSP) in patients with non-fluent primary progressive aphasia syndromes. METHODS: Patients with PSP, progressive non-fluent aphasia (PNFA) and logopenic progressive aphasia (LPA) were recruited. Patients were diagnosed clinically, but pathological confirmation was available in a proportion of patients. Midbrain and pons areas were measured using Osirix Lite, a free DICOM viewer...
July 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28509680/analyzing-dental-implant-sites-from-cone-beam-computed-tomography-scans-on-a-tablet-computer-a-comparative-study-between-ipad-and-3-display-systems
#8
Alejandro Carrasco, Elnaz Jalali, Ajay Dhingra, Alan Lurie, Sumit Yadav, Aditya Tadinada
PURPOSE: The aim of this study was to compare a medical-grade PACS (picture archiving and communication system) monitor, a consumer-grade monitor, a laptop computer, and a tablet computer for linear measurements of height and width for specific implant sites in the posterior maxilla and mandible, along with visualization of the associated anatomical structures. MATERIAL AND METHODS: Cone beam computed tomography (CBCT) scans were evaluated. The images were reviewed using PACS-LCD monitor, consumer-grade LCD monitor using CB-Works software, a 13″ MacBook Pro, and an iPad 4 using OsiriX DICOM reader software...
June 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28501659/influential-factors-on-the-evaluation-of-adamkiewicz-artery-using-a-320-detector-row-computed-tomography-device
#9
Alexandre C M Amato, José R Parga Filho, Noedir A G Stolf
BACKGROUND: Understanding the difference of Adamkiewicz artery (AKA) presentation in healthy and diseased subjects, and the influence of atherosclerotic factors prevalent in aortic disease patients, are important for aortic disease therapeutic planning. This study used a 320-detector row computed tomography (CT) device to examine the impact of clinical aspects of AKA identification in individuals with and without aortic disease. MATERIALS AND METHODS: angio-CTs obtained from 115 patients were assessed and the individuals grouped according to the presence or absence of aortic disease...
May 10, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28486661/validation-of-3d-reconstructed-computed-tomography-images-using-osirix%C3%A2-software-for-pre-transcatheter-aortic-valve-implantation-aortic-annulus-sizing
#10
Marlena Gumsheimer, Stefan Stortecky, Brigitta Gahl, Bettina Langhammer, Thierry Carrel, Lutz Buellesfeld, Christoph Huber, Henriette Most
OBJECTIVES: We report validation of OsiriX -an image processing freeware-to measure multi-slice computed tomography-derived annulus diameters for preprocedural transcatheter aortic valve implantation planning. METHODS: A total of 137 patients (82 ± 6.5 years, 42.3% male, logistic EuroSCORE 24.1 ± 14.2%) with severe aortic stenosis at high surgical risk underwent transcatheter aortic valve implantation assessment: transoesophageal echocardiography, angiography and multi-slice computed tomography...
May 8, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28474990/radiodensity-of-intraventricular-hemorrhage-associated-with-aneurysmal-subarachnoid-hemorrhage-may-be-a-negative-predictor-of-outcome
#11
Ha Son Nguyen, Luyuan Li, Mohit Patel, Shekar Kurpad, Wade Mueller
OBJECTIVE The presence, extent, and distribution of intraventricular hemorrhage (IVH) have been associated with negative outcomes in aneurysmal subarachnoid hemorrhage (SAH). Several qualitative scores (Fisher grade, LeRoux score, and Graeb score) have been established for evaluating SAH and IVH. However, no study has assessed the radiodensity within the ventricular system in aneurysmal SAH patients with IVH. Prior studies have suggested that hemorrhage with a higher radiodensity, as measured by CT Hounsfield units, can cause more irritation to brain parenchyma...
May 5, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28430338/yap-taz-and-areg-expression-in-eighth-cranial-nerve-schwannoma
#12
Alessandro Martini, Gino Marioni, Elisabetta Zanoletti, Rocco Cappellesso, Roberto Stramare, Elena Fasanaro, Chiara Faccioli, Luciano Giacomelli, Luca Denaro, Domenico D'Avella, Antonio Mazzoni, Ambrogio Fassina
BACKGROUND: Although the diagnosis and treatment of eighth cranial nerve (VIII CN) schwannoma (acoustic neuroma) has improved over the years, no factors capable of predicting tumor growth have been identified as yet. This study is a preliminary investigation of the expression in sporadic VIII CN schwannomas of Yes-associated protein (YAP), transcriptional coactivator with PDZ-binding motif (TAZ), and amphiregulin (AREG), a direct target gene of YAP and TAZ. The expression of YAP, TAZ and AREG was correlated with the volumetric dimensions of tumors on contrast-enhanced magnetic resonance imaging (ceMRI)...
April 7, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28418817/virtual-mapping-of-the-frontal-recess-guiding-safe-and-efficient-frontal-sinus-surgery
#13
Neil S Patel, Amy C Dearking, Erin K O'Brien, John F Pallanch
Objective To define relationships between the frontal sinus opening, ostia of other frontal recess cells, and endoscopic landmarks and to develop a clinically useful framework to guide frontal sinus surgery. Study Design Retrospective review. Setting Tertiary care academic referral center. Methods Adult patients with computed tomography (CT) without sinonasal pathology were included. Virtual endoscopy (using OsiriX) and corresponding CT reconstructions were used to identify all visible ostia in the frontal recess and characterize their positions in spaces between the uncinate/agger nasi (U), bulla ethmoidalis (EB), and middle turbinate (MT)...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28369974/forensic-facial-reconstruction-relationship-between-the-alar-cartilage-and-piriform-aperture
#14
Raíssa Ananda Paim Strapasson, Lara Maria Herrera, Rodolfo Francisco Haltenhoff Melani
During forensic facial reconstruction, facial features may be predicted based on the parameters of the skull. This study evaluated the relationships between alar cartilage and piriform aperture and nose morphology and facial typology. Ninety-six cone beam computed tomography images of Brazilian subjects (49 males and 47 females) were used in this study. OsiriX software was used to perform the following measurements: nasal width, distance between alar base insertion points, lower width of the piriform aperture, and upper width of the piriform aperture...
March 29, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28365396/use-of-the-3d-surgical-modelling-technique-with-open-source-software-for-mandibular-fibula-free-flap-reconstruction-and-its-surgical-guides
#15
L Ganry, B Hersant, J Quilichini, P Leyder, J P Meningaud
INTRODUCTION: Tridimensional (3D) surgical modelling is a necessary step to create 3D-printed surgical tools, and expensive professional software is generally needed. Open-source software are functional, reliable, updated, may be downloaded for free and used to produce 3D models. Few surgical teams have used free solutions for mastering 3D surgical modelling for reconstructive surgery with osseous free flaps. We described an Open-source software 3D surgical modelling protocol to perform a fast and nearly free mandibular reconstruction with microvascular fibula free flap and its surgical guides, with no need for engineering support...
March 29, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28345573/clinical-correlation-of-imaging-findings-in-congenital-cranial-dysinnervation-disorders-involving-abducens-nerve
#16
Chanchal Gupta, Pradeep Sharma, Rohit Saxena, Ajay Garg, Sanjay Sharma
PURPOSE: High-resolution magnetic resonance imaging (MRI) of intracranial parts of sixth nerve and seventh nerve and the extraocular muscles (EOMs) in orbit to correlate the clinical characteristics in patients with two special forms of strabismus in congenital cranial dysinnervation disorders which are Duane's retraction syndrome (DRS) and Mobius syndrome. MATERIALS AND METHODS: Morphological analysis by 3T MRI of orbit (using surface coils) and brain (using 32 channel head coil) was performed on 6 patients with clinical DRS (1 bilateral), 2 cases with Mobius syndrome, and 1 case with congenital sixth nerve palsy...
February 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28330587/comparison-of-semi-automated-and-manual-methods-to-measure-the-volume-of-prostate-cancer-on-magnetic-resonance-imaging
#17
L Marin, M Ezziane, E Comperat, P Mozer, G Cancel-Tassin, J-F Coté, D Racoceanu, F Boudghene, O Lucidarme, O Cussenot, R Renard Penna
PURPOSE: The purpose of this study was to determine the accuracy of manual semi-automated and volumetric measurements to assess prostate cancer volume on multiparametric magnetic resonance imaging (MP-MRI) using whole-mount histopathology for validation. MATERIALS AND METHODS: We evaluated 30 consecutive men (median age, 65.7 years; interquartile range [IQR], 61.5-70.9 years) with a median prostatic specific antigen of 8.5ng/dL (IQR, 5.5-10.5ng/dL), who underwent MP-MRI before radical prostatectomy...
May 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28329275/tissue-characterization-by-t1-and-t2-mapping-cardiovascular-magnetic-resonance-imaging-to-monitor-myocardial-inflammation-in-healing-myocarditis
#18
S Bohnen, U K Radunski, G K Lund, F Ojeda, Y Looft, M Senel, L Radziwolek, M Avanesov, E Tahir, C Stehning, B Schnackenburg, G Adam, S Blankenberg, K Muellerleile
Aims: Monitoring disease activity in myocarditis is important for tailored therapeutic strategies. This study evaluated the ability of T1 and T2 mapping cardiovascular magnetic resonance (CMR) to monitor the course of myocardial inflammation in healing myocarditis. Methods and results: Forty-eight patients with strictly defined acute myocarditis underwent CMR at 1.5 T in the acute stage, at 3-months (n = 39), and at 12-months follow-up (FU) (n = 21). Normal values were obtained in a control group of 27 healthy subjects...
March 8, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28323840/htc-vive-mevislab-integration-via-openvr-for-medical-applications
#19
Jan Egger, Markus Gall, Jürgen Wallner, Pedro Boechat, Alexander Hann, Xing Li, Xiaojun Chen, Dieter Schmalstieg
Virtual Reality, an immersive technology that replicates an environment via computer-simulated reality, gets a lot of attention in the entertainment industry. However, VR has also great potential in other areas, like the medical domain, Examples are intervention planning, training and simulation. This is especially of use in medical operations, where an aesthetic outcome is important, like for facial surgeries. Alas, importing medical data into Virtual Reality devices is not necessarily trivial, in particular, when a direct connection to a proprietary application is desired...
2017: PloS One
https://www.readbyqxmd.com/read/28298985/computed-tomography-assessment-of-temporomandibular-joint-position-and-dimensions-in-patients-with-class-ii-division-1-and-division-2-malocclusions
#20
Hande Gorucu-Coskuner, Semra Ciger
BACKGROUND: This study aimed to investigate and compare the positions and dimensions of the temporomandibular joint and its components, respectively, in patients with Class II division 1 and division 2 malocclusions. MATERIAL AND METHODS: Computed tomography images of 14 patients with Class II division 1 and 14 patients with Class II division 2 malocclusion were included with a mean age of 11.4 ± 1.2 years. The following temporomandibular joint measurements were made with OsiriX medical imaging software program...
March 2017: Journal of Clinical and Experimental Dentistry
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