keyword
MENU ▼
Read by QxMD icon Read
search

Segmental anatomy

keyword
https://www.readbyqxmd.com/read/27921154/peripheral-stent-thrombosis-leading-to-acute-limb-ischemia-and-major-amputation-incidence-and-risk-factors-in-the-aortoiliac-and-femoropopliteal-arteries
#1
Konstantinos Katsanos, Said A M Al-Lamki, Aneeta Parthipun, Stavros Spiliopoulos, Sanjay Dhanji Patel, Ioannis Paraskevopoulos, Hany Zayed, Athanasios Diamantopoulos
PURPOSE: To report the real-world incidence and risk factors of stent thrombosis in the aortoiliac and femoropopliteal arteries in case of bare nitinol stent (BNS) or covered nitinol stent (CNS) placement from a single-centre retrospective audit. MATERIALS AND METHODS: Medical records of consecutive patients treated with peripheral stent placement for claudication or critical limb ischemia were audited for definite stent thrombosis defined as imaging confirmed stent thrombosis that presented as acute limb-threatening ischemia...
December 5, 2016: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/27921072/anatomy-based-algorithm-for-automatic-segmentation-of-human-diaphragm-in-noncontrast-computed-tomography-images
#2
Elham Karami, Yong Wang, Stewart Gaede, Ting-Yim Lee, Abbas Samani
In-depth understanding of the diaphragm's anatomy and physiology has been of great interest to the medical community, as it is the most important muscle of the respiratory system. While noncontrast four-dimensional (4-D) computed tomography (CT) imaging provides an interesting opportunity for effective acquisition of anatomical and/or functional information from a single modality, segmenting the diaphragm in such images is very challenging not only because of the diaphragm's lack of image contrast with its surrounding organs but also because of respiration-induced motion artifacts in 4-D CT images...
October 2016: Journal of Medical Imaging
https://www.readbyqxmd.com/read/27916657/pharmacokinetic-analysis-and-drug-delivery-efficiency-of-the-focused-ultrasound-induced-blood-brain-barrier-opening-in-non-human-primates
#3
Gesthimani Samiotaki, Maria Eleni Karakatsani, Amanda Buch, Stephanos Papadopoulos, Shih Ying Wu, Sachin Jambawalikar, Elisa E Konofagou
PURPOSE: Focused Ultrasound (FUS) in conjunction with systemically administered microbubbles has been shown to open the Blood-Brain Barrier (BBB) locally, non-invasively and reversibly in rodents and non-human primates (NHP), suggesting the immense potential of this technique. The objective of this study entailed the investigation of the physiologic changes in the brain following the FUS-induced BBB opening and their relationship with the underlying anatomy. MATERIALS AND METHODS: Pharmacokinetic analysis was implemented in NHP's that received FUS at various acoustic pressures...
December 1, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27908182/prostate-deformation-from-inflatable-rectal-probe-cover-and-dosimetric-effects-in-prostate-seed-implant-brachytherapy
#4
Jun Lian, Yeqin Shao, Larry D Potter, Ronald C Chen, Jordan A Holmes, Eleanor A Pryser, Jie Shen, Dinggang Shen, Andrew Z Wang
PURPOSE: Prostate brachytherapy is an important treatment technique for patients with localized prostate cancer. An inflatable rectal ultrasound probe cover is frequently utilized during the procedure to adjust for unfavorable prostate position relative to the implant grid. However, the inflated cover causes prostate deformation, which is not accounted for during dosimetric planning. Most of the therapeutic dose is delivered after the procedure when the prostate and surrounding organs-at-risk are less deformed...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27904801/midfoot-and-forefoot-involvement-in-lateral-ankle-sprains-and-chronic-ankle-instability-part-1-anatomy-and-biomechanics
#5
John J Fraser, Mark A Feger, Jay Hertel
: The modern human foot is the culmination of more than five million years of evolution. The ankle-foot complex absorbs forces during loading, accommodates uneven surfaces, and acts as a lever for efficient propulsion. The ankle-foot complex has six independent functional segments that should be understood for proper assessment and treatment of foot and ankle injuries: the shank, rearfoot, midfoot, lateral forefoot, and the medial forefoot. The compliance of the individual segments of the foot is dependent on velocity, task, and active and passive coupling mechanisms within each of the foot segments...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904724/analysis-of-sacrococcygeal-morphology-in-koreans-using-computed-tomography
#6
Min Geun Yoon, Myung-Sang Moon, Bong Keun Park, Hohyoung Lee, Dong-Hyeon Kim
BACKGROUND: The sacrococcygeal morphology of Arabs and Europeans has been studied using computed tomography (CT) or magnetic resonance imaging to determine the cause of coccydynia. Studies have suggested differences in sacrococcygeal morphology among ethnic groups. However, there are no data on the sacrococcygeal anatomy of Koreans. METHODS: We conducted a retrospective analysis of 606 pelvic CT scans that were taken at Cheju Halla General Hospital between 2008 and 2014...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27902538/ulnar-tunnel-syndrome-radial-tunnel-syndrome-anterior-interosseous-nerve-syndrome-and-pronator-syndrome
#7
Adam B Strohl, David S Zelouf
In addition to the more common carpal tunnel and cubital tunnel syndromes, orthopaedic surgeons must recognize and manage other potential sites of peripheral nerve compression. The distal ulnar nerve may become compressed as it travels through the wrist, which is known as ulnar tunnel or Guyon canal syndrome. The posterior interosseous nerve may become entrapped in the proximal forearm as it travels through the radial tunnel, which results in a pain syndrome without motor weakness. The median nerve may become entrapped in the proximal forearm, which can result in a variety of symptoms...
November 29, 2016: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27898469/update-on-pigment-dispersion-syndrome-and-pigmentary-glaucoma
#8
Kingsley Okafor, Kateki Vinod, Steven J Gedde
PURPOSE OF REVIEW: The present article reviews the clinical features and pathogenesis of pigment dispersion syndrome and pigmentary glaucoma and provides an update regarding their diagnosis and management. RECENT FINDINGS: Newer imaging modalities including ultrasound biomicroscopy and anterior segment optical coherence tomography facilitate visualization of the iris concavity characteristic of eyes with pigment dispersion syndrome and pigmentary glaucoma. Patients with pigmentary glaucoma may be distinguished from those with other glaucoma types by the presence of typical symptoms, personality type, and patterns of diurnal intraocular pressure fluctuation...
November 25, 2016: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/27898160/haptic-feedback-improves-surgeons-user-experience-and-fracture-reduction-in-facial-trauma-simulation
#9
Sabine Girod, Sara C Schvartzman, Dyani Gaudilliere, Kenneth Salisbury, Rebeka Silva
Computer-assisted surgical (CAS) planning tools are available for craniofacial surgery, but are usually based on computer-aided design (CAD) tools that lack the ability to detect the collision of virtual objects (i.e., fractured bone segments). We developed a CAS system featuring a sense of touch (haptic) that enables surgeons to physically interact with individual, patient-specific anatomy and immerse in a three-dimensional virtual environment. In this study, we evaluated initial user experience with our novel system compared to an existing CAD system...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27896540/variations-in-the-anatomy-of-the-vertebral-artery-cervical-loop-segment-a-potential-predisposing-factor-for-traumatic-basal-subarachnoid-hemorrhage
#10
Jonathan E Medcalf, C Paul Johnson, Azzam Taktak, Silke Grabherr
Fatal traumatic basal subarachnoid hemorrhage (TBSAH) is a characteristic forensic pathological entity, the investigation of which requires special techniques. In Liverpool, post-mortem room angiography is undertaken, followed by complete removal of the vertebral arteries and histological examination. It has been observed that the arterial anatomy can be highly variable, particularly the length and course of the loop segments located between the C2 vertebra and the dura. In a number of cases of TBSAH the loop segments of torn vessels have appeared relatively short...
November 29, 2016: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/27896373/assessing-colonic-anatomy-normal-values-based-on-air-contrast-enemas-in-children-younger-than-6%C3%A2-years
#11
Ilan J N Koppen, Desale Yacob, Carlo Di Lorenzo, Miguel Saps, Marc A Benninga, Jennifer N Cooper, Peter C Minneci, Katherine J Deans, D Gregory Bates, Benjamin P Thompson
BACKGROUND: Contrast enemas with barium or water-soluble contrast agents are sometimes performed in children with severe intractable constipation to identify anatomical abnormalities. However there are no clear definitions for normal colonic size or abnormalities such as colonic dilation or sigmoid redundancy in children. OBJECTIVE: To describe characteristics of colonic anatomy on air contrast enemas in children without constipation to provide normal values for colonic size ratios in children...
November 29, 2016: Pediatric Radiology
https://www.readbyqxmd.com/read/27893451/rotating-and-translating-anthropomorphic-head-voxel-models-to-establish-an-horizontal-frankfort-plane-for-dental-cbct-monte-carlo-simulations-a-dose-comparison-study
#12
A Stratis, G Zhang, R Jacobs, R Bogaerts, H Bosmans
In order to carry out Monte Carlo (MC) dosimetry studies, voxel phantoms, modeling human anatomy, and organ-based segmentation of CT image data sets are applied to simulation frameworks. The resulting voxel phantoms preserve patient CT acquisition geometry; in the case of head voxel models built upon head CT images, the head support with which CT scanners are equipped introduces an inclination to the head, and hence to the head voxel model. In dental cone beam CT (CBCT) imaging, patients are always positioned in such a way that the Frankfort line is horizontal, implying that there is no head inclination...
December 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27888345/robust-thalamic-nuclei-segmentation-method-based-on-local-diffusion-magnetic-resonance-properties
#13
Giovanni Battistella, Elena Najdenovska, Philippe Maeder, Naghmeh Ghazaleh, Alessandro Daducci, Jean-Philippe Thiran, Sébastien Jacquemont, Constantin Tuleasca, Marc Levivier, Meritxell Bach Cuadra, Eleonora Fornari
The thalamus is an essential relay station in the cortical-subcortical connections. It is characterized by a complex anatomical architecture composed of numerous small nuclei, which mediate the involvement of the thalamus in a wide range of neurological functions. We present a novel framework for segmenting the thalamic nuclei, which explores the orientation distribution functions (ODFs) from diffusion magnetic resonance images at 3 T. The differentiation of the complex intra-thalamic microstructure is improved by using the spherical harmonic (SH) representation of the ODFs, which provides full angular characterization of the diffusion process in each voxel...
November 25, 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/27884788/the-virtual-dissecting-room-creating-highly-detailed-anatomy-models-for-educational-purposes
#14
Marijn Zilverschoon, Koen L Vincken, Ronald L A W Bleys
INTRODUCTION: Virtual 3D models are powerful tools for teaching anatomy. At the present day, there are a lot of different digital anatomy models, most of these commercial applications are based on a 3D model of a human body reconstructed from images with a 1 millimeter intervals. The use of even smaller intervals may result in more details and more realistic appearances of 3D anatomy models. The aim of this study was to create a realistic and highly detailed 3D model of the hand and wrist based on small interval cross-sectional images, suitable for undergraduate and postgraduate teaching purposes with the possibility to perform a virtual dissection in an educational application...
November 21, 2016: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/27872989/is-the-contralateral-tibia-a-reliable-template-for-reconstruction-a-three-dimensional-anatomy-cadaveric-study
#15
Pascal Schenk, Lazaros Vlachopoulos, Andreas Hingsammer, Sandro F Fucentese, Philipp Fürnstahl
PURPOSE: The contralateral anatomy is regularly used as a reconstruction template for corrective osteotomies of several deformities and pathological conditions. However, there is lack of evidence that the intra-individual differences between both tibiae are sufficiently small to use the contralateral tibia as a 3D reconstruction template for complex osteotomies. The aim of this study was to evaluate the intra-individual side differences of the tibia in length, torsion, angulation, and translation using 3D measurement techniques...
November 21, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27870822/comparison-of-total-lung-capacity-determined-by-plethysmography-with-computed-tomographic-segmentation-using-caliper
#16
Andrew J Matsumoto, Brian J Bartholmai, Mark E Wylam
PURPOSE: Traditionally, determination of total lung capacity (TLC) by plethysmography (TLCpleth) has been important in the diagnosis of lung diseases. Alternatively, data acquired from computerized tomography (CT) can be utilized to calculate a measure of TLC (TLCCT). The clinical utility of TLCCT is not certain. We sought to determine, in a clinical setting, whether TLCCT correlates with TLCpleth across a range of lung diseases and scanning techniques. In addition, we determined whether TLCCT affects the interpretation of pulmonary function tests...
November 18, 2016: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/27867120/transforaminal-resection-of-cervical-dumbbell-schwannomas-in-patients-with-additional-tumors
#17
Ji Zhang, Xiang-Heng Zhang, Zi-Feng Wang, You-Ping Li, Zheng-Quan Zhu, Ji-Cheng Sun, Zheng-He Chen, Shao-Yong Wu, Ke Sai, Jian Wang, Yong-Gao Mou, Zhong-Ping Chen
BACKGROUND: It is rare for two primary tumors to occur simultaneously in a patient. Management of cervical dumbbell schwannomas (CDSs) with concurrent tumors (CTs) requires a specific neurosurgical strategy. The primary objective of this study is to investigate surgical strategies for CDSs with CTs while preserving as much of the mechanically relevant bone structures as possible. MATERIAL AND METHODS: Twelve patients with concurrent CTs and CDSs were identified from three medical centers...
November 17, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27866077/the-concept-of-double-inlet-double-outlet-right-ventricle-a-distinct-congenital-heart-disease
#18
Veronica Spadotto, Carla Frescura, Siew Yen Ho, Gaetano Thiene
The aim of this study was to estimate the incidence and to analyze the anatomy of double inlet-double outlet right ventricle complex and its associated cardiac anomalies in our autopsy series. Among the 1640 hearts with congenital heart disease of our Anatomical Collection, we reviewed the specimens with double inlet-double outlet right ventricle, according to the sequential-segmental analysis, identifying associated cardiac anomalies and examining lung histology to assess the presence of pulmonary vascular disease...
September 25, 2016: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/27861926/leaf-vein-xylem-conduit-diameter-influences-susceptibility-to-embolism-and-hydraulic-decline
#19
Christine Scoffoni, Caetano Albuquerque, Craig R Brodersen, Shatara V Townes, Grace P John, Hervé Cochard, Thomas N Buckley, Andrew J McElrone, Lawren Sack
Ecosystems worldwide are facing increasingly severe and prolonged droughts during which hydraulic failure from drought-induced embolism can lead to organ or whole plant death. Understanding the determinants of xylem failure across species is especially critical in leaves, the engines of plant growth. If the vulnerability segmentation hypothesis holds within leaves, higher order veins that are most terminal in the plant hydraulic system should be more susceptible to embolism to protect the rest of the water transport system...
November 11, 2016: New Phytologist
https://www.readbyqxmd.com/read/27843802/coronary-ectasia-in-a-man-on-breast-cancer-therapy-presenting-with-acute-coronary-syndrome
#20
Dana C Johnson, Luay Rifai, Parag V Patel
Limited data exist on the association between breast cancer treatments and coronary artery disease anatomy, particularly in males. We describe an unusual case of diffuse coronary ectasia in a man with breast cancer presenting with acute coronary syndrome (ACS). A 66-year-old man with breast cancer on paclitaxel, tamoxifen, and carboplatin chemotherapy regimen, presents with new onset chest pain. Electrocardiogram reveals anterolateral ST-segment depressions and elevated troponin I level. Emergent angiography revealed grossly ectatic coronary arteries with a total thrombotic occlusion of the mid right coronary artery...
October 2016: Avicenna Journal of Medicine
keyword
keyword
63108
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"