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https://www.readbyqxmd.com/read/28207618/magnetic-resonance-imaging-evaluation-of-the-effects-of-surgical-invasiveness-on-paravertebral-muscles-after-muscle-preserving-interlaminar-decompression-mild
#1
Hitoshi Tonomura, Yoichiro Hatta, Yasuo Mikami, Takumi Ikeda, Tomohisa Harada, Masateru Nagae, Hironori Koike, Hitoshi Hase, Toshikazu Kubo
STUDY DESIGN: This is a retrospective study. OBJECTIVES: The aim of this study was to determine the extent of damage to the paravertebral muscles after muscle-preserving interlaminar decompression (MILD) using magnetic resonance imaging to evaluate changes in the multifidus muscle (MF). SUMMARY OF BACKGROUND DATA: Short-term surgical outcomes of MILD for lumbar spinal canal stenosis (LSCS) are satisfactory; however, the extent of damage to the paravertebral muscles after MILD remains unclear...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28179171/extent-of-t1-c-intensity-is-a-predictor-of-blood-loss-in-resection-of-meningioma
#2
Ha Nguyen, Karl Janich, Ninh Doan, Mohit Patel, Luyuan Li, Wade Mueller
INTRODUCTION: Surgery for meningioma is associated with significant blood loss. Preoperative embolization has been associated with reduction of blood loss and has been noted to decrease intensity on T1 + contrast sequences. As such, we investigate potential relationships between blood loss and the extent of T1+ contrast intensity. MATERIALS AND METHODS: Forty-two patients who underwent surgical resection of intracranial meningioma were retrospectively reviewed from August 2009 to May 2016...
February 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28166189/evaluation-of-three-dimensional-printed-materials-for-simulation-by-computed-tomography-and-ultrasound-imaging
#3
James J Mooney, Nabeel Sarwani, Melissa L Coleman, Joseph S Fotos
INTRODUCTION: The use of three-dimensional (3D) printing allows for creation of custom models for clinical care, education, and simulation. Medical imaging, given the significant role it plays in both clinical diagnostics and procedures, remains an important area for such education and simulation. Unfortunately, the materials appropriate for use in simulation involving radiographic or ultrasound imaging remains poorly understood. Therefore, our study was intended to explore the characteristics of readily available 3D printing materials when visualized by computed tomography (CT) and ultrasound...
February 4, 2017: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/28163241/application-of-3d-printing-for-treating-fractures-of-both-columns-of-the-acetabulum-benefit-of-pre-contouring-plates-on-the-mirrored-healthy-pelvis
#4
Peter Upex, Pomme Jouffroy, Guillaume Riouallon
Acetabular fractures can be challenging to treat, in part because the shape of the fixation plates needs to be adjusted during the surgical procedure. One possibility is to generate a model of the uninjured half of a fractured pelvis with 3D printing, and then pre-contour the fixation plates preoperatively on this model. The purpose of this technical note is to describe how we used 3D printing as an aid to treat acetabular fractures. The quality of the fracture reduction, fracture fixation and time savings were evaluated...
February 2, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28152235/community-delivery-of-semiautomated-fractal-analysis-tool-in-cardiac-mr-for-trabecular-phenotyping
#5
Gabriella Captur, Dina Radenkovic, Chunming Li, Yu Liu, Nay Aung, Filip Zemrak, Catalina Tobon-Gomez, Xuexin Gao, Perry M Elliott, Steffen E Petersen, David A Bluemke, Matthias G Friedrich, James C Moon
PURPOSE: To report the development of easy-to-use magnetic resonance imaging (MRI) fractal tools deployed on platforms accessible to all. The trabeculae of the left ventricle vary in health and disease but their measurement is difficult. Fractal analysis of cardiac MR images can measure trabecular complexity as a fractal dimension (FD). MATERIALS AND METHODS: This Health Insurance Portability and Accountability Act (HIPAA)-compliant study was approved by the local Institutional Review Board...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28115296/three-dimensional-image-reconstruction-with-free-open-source-osirix-software-in-video-assisted-thoracoscopic-lobectomy-and-segmentectomy
#6
Fei Yao, Jian Wang, Ju Yao, Fangrong Hang, Xu Lei, Yongke Cao
OBJECTIVE: The aim of this retrospective study was to evaluate the practice and the feasibility of Osirix, a free and open-source medical imaging software, in performing accurate video-assisted thoracoscopic lobectomy and segmentectomy. METHODS: From July 2014 to April 2016, 63 patients received anatomical video-assisted thoracoscopic surgery (VATS), either lobectomy or segmentectomy, in our department. Three-dimensional (3D) reconstruction images of 61 (96.8%) patients were preoperatively obtained with contrast-enhanced computed tomography (CT)...
January 20, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28099302/comparison-of-ultrasound-and-mri-for-the-diagnosis-of-glenohumeral-dysplasia-in-brachial-plexus-birth-palsy
#7
Kenneth W Donohue, Kevin J Little, John P Gaughan, Scott H Kozin, Brian D Norton, Dan A Zlotolow
BACKGROUND: In this study, we investigated the agreement between measurements made on ultrasound and those made on magnetic resonance imaging (MRI) in the assessment of glenohumeral dysplasia resulting from brachial plexus birth palsy. METHODS: Thirty-nine patients (14 male and 25 female) with brachial plexus birth palsy were evaluated at 2 tertiary care centers. All patients underwent ultrasonography and MRI for suspected glenohumeral dysplasia. Studies were obtained at an average of 2 months apart (range, 0 to 6 months)...
January 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28097499/automating-perforator-flap-mra-and-cta-reporting
#8
Christopher J Lange, Nanda Deepa Thimmappa, Srikanth R Boddu, Silvina P Dutruel, Mengchao Pei, Zerwa Farooq, Ashkan Heshmatzadeh Behzadi, Yi Wang, Ramin Zabih, Martin R Prince
Surgical breast reconstruction after mastectomy requires precise perforator coordinates/dimensions, perforator course, and fat volume in a radiology report. Automatic perforator reporting software was implemented as an OsiriX Digital Imaging and Communications in Medicine (DICOM) viewer plugin. For perforator analysis, the user identifies a reference point (e.g., umbilicus) and marks each perforating artery/vein bundle with multiple region of interest (ROI) points along its course beginning at the muscle-fat interface...
January 17, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28054399/comparison-of-effects-of-zoledronic-acid-and-clodronate-on-the-bone-structure-imaginological-and-histomorphometrical-study-in-vivo
#9
Stephanie Joana Roman Martelli, Melissa Feres Damian, Ana Paula Neutzling Gomes, André Ribeiro Schinestsck, Alexandre Emídio Ribeiro Silva, Ana Carolina Uchoa Vasconcelos
OBJECTIVES: To compare histologically and imaginologically the bone structure of rats' mandibles treated with bisphosphonates (BPs) and rats that did not receive BPs. METHODS: Thirty-four rat specimens (Rattus novergicus, Wistar strain) were divided into three groups: (i) 12 rats treated with zoledronic acid; (ii) 12 rats treated with clodronate; and (iii) the control group, containing 10 rats that received saline solution. All individuals were exposed to cone beam computed tomography (CBCT)...
January 5, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28040772/three-dimensional-virtual-bronchoscopy-using-a-tablet-computer-to-guide-real-time-transbronchial-needle-aspiration
#10
Alfonso Fiorelli, Antonio Raucci, Roberto Cascone, Alfonso Reginelli, Davide Di Natale, Carlo Santoriello, Antonio Capuozzo, Roberto Grassi, Nicola Serra, Mario Polverino, Mario Santini
OBJECTIVES: We proposed a new virtual bronchoscopy tool to improve the accuracy of traditional transbronchial needle aspiration for mediastinal staging. METHODS: Chest-computed tomographic images (1 mm thickness) were reconstructed with Osirix software to produce a virtual bronchoscopic simulation. The target adenopathy was identified by measuring its distance from the carina on multiplanar reconstruction images. The static images were uploaded in iMovie Software, which produced a virtual bronchoscopic movie from the images; the movie was then transferred to a tablet computer to provide real-time guidance during a biopsy...
December 31, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28027767/t1-mapping-cardiovascular-magnetic-resonance-imaging-to-detect-myocarditis-impact-of-slice-orientation-on-the-diagnostic-performance
#11
Sebastian Bohnen, Ulf K Radunski, Gunnar K Lund, Enver Tahir, Maxim Avanesov, Christian Stehning, Bernhard Schnackenburg, Gerhard Adam, Stefan Blankenberg, Kai Muellerleile
BACKGROUND: T1 mapping is a promising diagnostic tool to improve the diagnostic accuracy of cardiovascular magnetic resonance (CMR) in patients with suspected myocarditis. However, there are currently no data on the potential influence of slice orientation on the diagnostic performance of CMR. Thus, we compared the diagnostic performance of global myocardial T1 and extracellular volume (ECV) values to differentiate patients with myocarditis from healthy individuals between different slice orientations...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28018904/3d-volumetric-modeling-and-microvascular-reconstruction-of-irradiated-lumbosacral-defects-after-oncologic-resection
#12
Emilio Garcia-Tutor, Marco Romeo, Michael P Chae, David J Hunter-Smith, Warren Matthew Rozen
BACKGROUND: Locoregional flaps are sufficient in most sacral reconstructions. However, large sacral defects due to malignancy necessitate a different reconstructive approach, with local flaps compromised by radiation and regional flaps inadequate for broad surface areas or substantial volume obliteration. In this report, we present our experience using free muscle transfer for volumetric reconstruction, in such cases, and demonstrate three-dimensional (3D) haptic models of the sacral defect to aid preoperative planning...
2016: Frontiers in Surgery
https://www.readbyqxmd.com/read/28005828/evaluation-of-eyeball-and-orbit-in-relation-to-gender-and-age
#13
Cenk Murat Özer, Ibrahim Ilker Öz, Ismail Şerifoğlu, Mustafa Çağatay Büyükuysal, Çağatay Barut
The orbital aperture is the entrance to the orbit in which most important visual structures such as the eyeball and the optic nerve are found. It is vital not only for the visual system but also for the evaluation and recognition of the face. Eyeball volume is essential for diagnosing microphthalmos or buphthalmos in several eye disorders. Knowing the length of the optic nerve is necessary in selecting the right instruments for enucleation. Therefore, the aim of this study was to evaluate eyeball volume, orbital aperture, and optic nerve dimensions for a morphological description in a Turkish population sample according to gender and body side...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27897414/a-comparative-study-of-software-programmes-for-cross-sectional-skeletal-muscle-and-adipose-tissue-measurements-on-abdominal-computed-tomography-scans-of-rectal-cancer-patients
#14
Jeroen L A van Vugt, Stef Levolger, Arvind Gharbharan, Marcel Koek, Wiro J Niessen, Jacobus W A Burger, Sten P Willemsen, Ron W F de Bruin, Jan N M IJzermans
BACKGROUND: The association between body composition (e.g. sarcopenia or visceral obesity) and treatment outcomes, such as survival, using single-slice computed tomography (CT)-based measurements has recently been studied in various patient groups. These studies have been conducted with different software programmes, each with their specific characteristics, of which the inter-observer, intra-observer, and inter-software correlation are unknown. Therefore, a comparative study was performed...
November 22, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27873519/use-of-three-dimensional-curved-multiplanar-reconstruction-images-for-sylvian-dissection-in-microsurgery-of-middle-cerebral-artery-aneurysms
#15
Taek Kyun Nam, Yong Sook Park, Jun Soo Byun, Seung Won Park, Jeong Taik Kwon
PURPOSE: The purpose of this study was to introduce a method of using three-dimensional (3D) curved-multiplanar reconstruction (MPR) images for sylvian dissection during microsurgical treatment of middle cerebral artery (MCA) aneurysms. MATERIALS AND METHODS: Forty-nine patients who had undergone surgery for MCA aneurysms were enrolled. We obtained the 3D curved-MPR images along the sphenoid ridge using OsiriX MD™ imaging software, compared sylvian dissection time according to several 3D MPR image factors, and investigated the correlations between these images and intraoperative findings...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27856047/stature-estimation-from-the-femur-and-tibia-in-black-south-african-sub-adults
#16
Desiré M Brits, Mubarak A Bidmos, Paul R Manger
Stature estimation can play a role in the positive identification of unknown individuals and as such it is routinely assessed during the examination of adult remains. Unfortunately, this is not a standard procedure when dealing with sub-adult remains due to the general lack of standard procedures for the estimation of sub-adult stature. The aim of this study was therefore to derive regression equations for the estimation of stature in black South African sub-adults. Fifty nine black South African sub-adult males and females, aged 10-17 years, voluntarily participated in the study by undergoing a full body Magnetic Resonance Imaging (MRI) scan...
October 21, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27847843/proximity-of-vital-structures-to-the-clavicle-comparison-of-fractured-and-non-fractured-side
#17
Frans J Mulder, Jos J Mellema, David Ring
BACKGROUND: Previous anatomic and radiological studies have described the relationship of the clavicle to major neurovascular structures in healthy subjects. We were curious about this relationship in patients with a clavicle fracture and if it is different from non-fractured clavicles. METHODS: We retrospectively identified all patients with a clavicle fracture between July 2001 and October 2013 in two level 1 trauma centers. Patients aged 18 years or greater with an acute unilateral clavicle fracture and a chest CT scan in the supine position displaying both clavicles and the complete fracture were included...
October 2016: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/27837185/quantitative-estimation-of-a-ratio-of-intracranial-cerebrospinal-fluid-volume-to-brain-volume-based-on-segmentation-of-ct-images-in-patients-with-extra-axial-hematoma
#18
Ha Son Nguyen, Mohit Patel, Luyuan Li, Shekar Kurpad, Wade Mueller
BACKGROUND: Diminishing volume of intracranial cerebrospinal fluid (CSF) in patients with space-occupying masses have been attributed to unfavorable outcome associated with reduction of cerebral perfusion pressure and subsequent brain ischemia. OBJECTIVE: The objective of this article is to employ a ratio of CSF volume to brain volume for longitudinal assessment of space-volume relationships in patients with extra-axial hematoma and to determine variability of the ratio among patients with different types and stages of hematoma...
November 11, 2016: Neuroradiology Journal
https://www.readbyqxmd.com/read/27822642/bone-age-estimation-based-on-multislice-computed-tomography-study-of-the-scapula
#19
Florence Nougarolis, Fatima-Zohra Mokrane, Nicolas Sans, Hervé Rousseau, Fabrice Dedouit, Norbert Telmon
Progress in medical imaging has opened new areas of research in forensic anthropology, especially in the context of the study of bone age assessment. The study of bone age has become a useful tool for age estimation at death or age of young adult migrants in an anthropological context. We retrospectively evaluated multislice computed tomography (MSCT) explorations focused on scapulae of 232 individuals (123 males; 109 females) aged between 8 and 30 years old. Computed tomography (CT) scans were viewed in axial and multiplanar reconstructed images using OsiriX 5...
March 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27772794/mri-venous-architecture-of-the-thalamus
#20
Bhanu Gogia, Vinodh A Kumar, Lakshmi S Chavali, Leena Ketonen, Jill Hunter, Sujit S Prabhu, Donald Schomer, L Anne Hayman
PURPOSE: Our purpose is to describe the thalamic veins using a novel approach named venous gliography in cases with primary or secondary gliomas of the thalamus. Venous gliography is defined by authors as a method to visualize veins on MRI Brain T1-weighted post contrast scans containing gliomas which have induced regional venous congestion. METHODS: Routine clinical MR Imaging studies were reviewed to assess the presence of thalamic veins in 29 glioma cases. In addition, confocal reconstruction techniques (Anatom-e and Osirix) were used in cases that had thin sections (1...
November 15, 2016: Journal of the Neurological Sciences
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