keyword
MENU ▼
Read by QxMD icon Read
search

Spinal anatomy

keyword
https://www.readbyqxmd.com/read/28108406/berry-s-ligament-and-the-inferior-thyroid-artery-as-reliable-anatomical-landmarks-for-the-recurrent-laryngeal-nerve-a-fresh-cadaveric-study-of-the-cervical-spine-the-recurrent-laryngeal-nerve-rln-relevant-to-spine
#1
Ali Rajabian, Michael Walsh, Nasir A Quraishi
BACKGROUND CONTEXT: Whilst most cadaveric studies of the RLN have focused on course variations, they have usually been done on preserved (fixed and embalmed) cadavers which renders the RLN immobile and of less surgical landmark value. PURPOSE: Our aim was to perform a thorough exposure in fresh cadavers with the intention of investigating inferior thyroid artery and Berry's ligament as reliable landmarks for the identification of the RLN in anterior cervical spine surgery...
January 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28097078/the-human-central-canal-of-the-spinal-cord-a-comprehensive-review-of-its-anatomy-embryology-molecular-development-variants-and-pathology
#2
REVIEW
Erfanul Saker, Brandon M Henry, Krzysztof A Tomaszewski, Marios Loukas, Joe Iwanaga, Rod J Oskouian, R Shane Tubbs
The human central canal of the spinal cord is often overlooked. However, with advancements in imaging quality, this structure can be visualized in more detail than ever before. Therefore, a timely review of this part of the cord seemed warranted. Using standard search engines, a literature review was performed for the development, anatomy, and pathology involving the central canal. Clinicians who treat patients with issues near the spine or interpret imaging of the spinal cord should be familiar with the morphology and variants of the central canal...
December 12, 2016: Curēus
https://www.readbyqxmd.com/read/28094482/real-time-ultrasound-guided-spinal-anesthesia-in-patients-with-predicted-difficult-anatomy
#3
Hesham Elsharkawy, Ankit Maheshwari, Rovnat Babazade, Anahi Perlas, Sherif Zaky, Loran M Soliman
BACKGROUND: There are limited reports of lumbar neuraxial blocks using real-time ultrasound in patients with predicted difficulties. We compared the number of attempts to perform spinal anesthesia using real time ultrasound guidance versus landmark technique in patients meeting predefined criteria for difficult spinal anesthesia. We also compared procedure time, block success, patient satisfaction and difficulty scores between groups. METHODS: Following institutional review board approval patients scheduled for total hip or knee arthroplasty with expected difficulty to perform spinal anesthesia were included...
January 17, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28092118/incorporation-of-ct-based-measurements-of-trunk-anatomy-into-subject-specific-musculoskeletal-models-of-the-spine-influences-vertebral-loading-predictions
#4
Alexander G Bruno, Hossein Mokhtarzadeh, Brett T Allaire, Kelsey R Velie, M Clara De Paolis Kaluza, Dennis E Anderson, Mary L Bouxsein
We created subject-specific musculoskeletal models of the thoracolumbar spine by incorporating spine curvature and muscle morphology measurements from computed tomography (CT) scans to determine the degree to which vertebral compressive and shear loading estimates are sensitive to variations in trunk anatomy. We measured spine curvature and trunk muscle morphology using spine CT scans of 125 men, and then created four different thoracolumbar spine models for each person: 1) height and weight adjusted (Ht/Wt models); 2) height, weight and spine curvature adjusted (+C models); 3) height, weight and muscle morphology adjusted (+M models); and 4) height, weight, spine curvature, and muscle morphology adjusted (+CM models)...
January 16, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28087435/postmyelotomy-closure-of-spinal-cord-zip-lock-technique-an-initial-experience
#5
Daljit Singh, Shaam Bodeliwala, Hukum Singh, Anita Jagetia, Amit Mittal
Proper closure of the pia matter is necessary to restore the normal anatomy and prevent postoperative painful dysesthesia after excision of intramedullary spinal cord tumor. Two methods of closure of the pia have been described: welding technique and conventional suturing. Here, we report our initial experience with a new "pial press" or "zip-lock" technique for pial closure where pial layers are simply held together and plunged into each other with small micro tooth forceps. Advantages of the technique over other techniques are its less chances of suture related complications or trauma to the posterior column and simplicity of the technique...
January 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28072502/wallerian-degeneration-beyond-the-corticospinal-tracts-conventional-and-advanced-mri-findings
#6
REVIEW
Yin Jie Chen, Seyed Ali Nabavizadeh, Arastoo Vossough, Sunil Kumar, Laurie A Loevner, Suyash Mohan
Wallerian degeneration (WD) is defined as progressive anterograde disintegration of axons and accompanying demyelination after an injury to the proximal axon or cell body. Since the 1980s and 1990s, conventional magnetic resonance imaging (MRI) sequences have been shown to be sensitive to changes of WD in the subacute to chronic phases. More recently, advanced MRI techniques, such as diffusion-weighted imaging (DWI) and diffusion tensor imaging (DTI), have demonstrated some of earliest changes attributed to acute WD, typically on the order of days...
November 7, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28065877/charles-estienne-1504-1564-his-life-work-and-contribution-to-anatomy-and-the-first-description-of-the-canal-in-the-spinal-cord
#7
REVIEW
Konstantinos Markatos, Demetrios Chytas, Demetrios Korres, Konstantinos Laios, Georgios Androutsos, Efstathios Chronopoulos
The purpose of this historic review is to summarize the life, work and contribution to anatomy of Charles Estienne (also known by the Latin name Carolus Stephanus). Charles Estienne was an early exponent of the science of anatomy in France. Although he remained under the influence of the Galenic tradition of medicine, anatomy and surgery throughout his distinguished career, he had a significant influence on the scientific revolution and anatomy reformation of the 16th century. Nevertheless he cannot be place in the same level of contribution as Vesalius due to his lack of discipline in his work, hesitation to diverge totally from traditional beliefs and his hesitation for a total criticism of the Galenic tradition...
January 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28063076/automatic-detection-of-vertebral-number-abnormalities-in-body-ct-images
#8
Shouhei Hanaoka, Yoshiyasu Nakano, Mitsutaka Nemoto, Yukihiro Nomura, Tomomi Takenaga, Soichiro Miki, Takeharu Yoshikawa, Naoto Hayashi, Yoshitaka Masutani, Akinobu Shimizu
PURPOSE: The anatomical anomaly of the number of vertebral bones is one of the major anomalies in the human body, which can cause confusion of the spinal level in, for example, surgery. The aim of this study is to develop an automatic detection system for this type of anomaly. METHODS: We utilized our previously reported anatomical landmark detection system for this anomaly detection problem. This system uses a landmark point distribution model (L-PDM) to find multiple landmark positions...
January 6, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28056123/the-interface-of-mechanics-and-nociception-in-joint-pathophysiology-insights-from-the-facet-and-temporomandibular-joints
#9
Megan M Sperry, Meagan E Ita, Sonia Kartha, Sijia Zhang, Ya-Hsin Yu, Beth Winkelstein
Chronic joint pain is a widespread problem that frequently occurs with aging and trauma. Pain occurs most often in synovial joints, the body's load bearing joints. The mechanical and molecular mechanisms contributing to synovial joint pain are reviewed using two examples, the cervical spinal facet joints and the temporomandibular joint (TMJ). Although much work has focused on the macroscale mechanics of joints in health and disease, the combined influence of tissue mechanics, molecular processes, and nociception in joint pain has only recently become a focus...
February 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28048682/su-f-t-188-a-robust-treatment-planning-technique-for-proton-pencil-beam-scanning-cranial-spinal-irradiation
#10
M Zhu, M Yam, M Mehta, S Badiyan, K Young, R Malyapa, W Regine, K Langen
PURPOSE: To propose a proton pencil beam scanning (PBS) cranial spinal irradiation (CSI) treatment planning technique robust against patient roll, isocenter offset and proton range uncertainty. METHOD: Proton PBS plans were created (Eclipse V11) for three previously treated CSI patients to 36 Gy (1.8 Gy/fractions). The target volume was separated into three regions: brain, upper spine and lower spine. One posterior-anterior (PA) beam was used for each spine region, and two posterior-oblique beams (15° apart from PA direction, denoted as 2PO_15) for the brain region...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048554/th-ab-202-03-a-novel-tool-for-computing-deliverable-doses-in-dynamic-mlc-tracking-treatments
#11
M Fast, C Kamerling, S Crijns, M Menten, S Nill, B Raaymakers, U Oelfke
PURPOSE: In tracked dynamic multi-leaf collimator (MLC) treatments, segments are continuously adapted to the target centroid motion in beams-eye-view. On-the-fly segment adaptation, however, potentially induces dosimetric errors due to the finite MLC leaf width and non-rigid target motion. In this study, we outline a novel tool for computing the 4d dose of lung SBRT plans delivered with MLC tracking. METHODS: The following automated workflow was developed: A) centroid tracking, where the initial segments are morphed to each 4dCT phase based on the beams-eye-view GTV shift (followed by a dose calculation on each phase); B) re-optimized tracking, in which all morphed initial plans from (A) are further optimised ("warm-started") in each 4dCT phase using the initial optimisation parameters but phase-specific volume definitions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048300/th-cd-206-10-clinical-application-of-the-mind-demons-algorithm-for-symmetric-diffeomorphic-deformable-mr-to-ct-image-registration-in-spinal-interventions
#12
S Reaungamornrat, T De Silva, A Uneri, J Wolinsky, A Khanna, G Kleinszig, S Vogt, J Prince, J Siewerdsen
PURPOSE: Accurate intraoperative localization of target anatomy (e.g., tumors and vertebral levels) and critical structures (e.g., nerves and vessels) is essential to safe, effective surgery. Preoperative CT/MR images can be used to identify such vital anatomy in intraoperative images through multimodality deformable registration. We proposed a deformable registration method to align preoperative MR to intraoperative CT using modality-independent neighborhood descriptors (MIND) and a Huber metric for robust registration...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048210/su-g-jep1-10-feasibility-of-cyberknife-tracking-using-the-previously-implanted-permanent-brachytherapy-seed-cloud
#13
J Cheung, J Cunha, A Sudhyadhom, C McGuinness, M Roach, M Descovich
PURPOSE: Robotic radiosurgery is a salvage treatment option for patients with recurrent prostate cancer. We explored the feasibility of tracking the bolus of permanent prostate implants (PPI) using image recognition software optimized to track spinal anatomy. METHODS: Forty-five inert iodine seeds were implanted into a gelatin-based prostate phantom. Four superficial gold seeds were inserted to provide ground-truth alignment. A CT scan of the phantom (120 kVp, 1 mm slice thickness) was acquired and a single-energy iterative metal artifact reduction (MAR) algorithm was used to enhance the quality of the DRR used for tracking...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048098/su-f-j-67-dosimetric-changes-during-radiotherapy-in-lung-cancer-patients-with-atelectasis
#14
C Guy, E Weiss, N Jan, L Reshko, G Christensen, G Hugo
PURPOSE: Large geometric changes which occur during thoracic radiotherapy alter normal anatomy and target position and may induce clinically important dose changes. This study investigates variation of organ-at-risk (OAR) dose caused by atelectasis resolution during radiotherapy. METHODS: 3D IMRT treatment plans were obtained for 14 non-small-cell lung cancer patients. Dose of the clinical plan was recalculated on a baseline scan in which lung was collapsed and on a midtreatment scan in which lung re-aeration had occurred...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047736/su-f-p-42-to-navigate-or-not-to-navigate-hdr-bt-in-recurrent-spine-lesions
#15
L Voros, G Cohen, M Zaider, Y Yamada
PURPOSE: We compare the accuracy of HDR catheter placement for paraspinal lesions using O-arm CBCT imaging combined with StealthStation navigation and traditional fluoroscopically guided catheter placement. METHODS: CT and MRI scans were acquired pre-treatment to outline the lesions and design treatment plans (pre-plans) to meet dosimetric constrains. The pre-planned catheter trajectories were transferred into the StealthStation Navigation system prior to the surgery...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046929/su-f-t-585-a-novel-phantom-for-dosimetric-validation-of-sbrt-for-spinal-lesions
#16
K N Papanikolaou, L T Watts, E Pappas, T Maris, C Ha, N Kirby, K Rasmussen, A N Gutierrez, S Stathakis
PURPOSE: SBRT is proving to be a very efficacious treatment modality for an increasing number of indications, including spine lesions. We have developed a novel phantom to serve as an end-to-end QA tool for either patient specific QA or commissioning QA of SBRT for spine lesions. METHODS: In this feasibility study, we have selected a patient with a single metastatic lesion in the L5 vertebral body. The patient's CT simulation scan was used to develop a VMAT treatment plan delivering 18Gy to at least 90% of the target volume, following the guidelines of RTOG 0631...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046651/mo-fg-bra-08-swarm-intelligence-based-personalized-respiratory-gating-in-lung-sabr
#17
A Modiri, P Sabouri, X Gu, R Timmerman, A Sawant
PURPOSE: Respiratory gating is widely deployed as a clinical motion-management strategy in lung radiotherapy. In conventional gating, the beam is turned on during a pre-determined phase window; typically, around end-exhalation. In this work, we challenge the notion that end-exhalation is always the optimal gating phase. Specifically, we use a swarm-intelligence-based, inverse planning approach to determine the optimal respiratory phase and MU for each beam with respect to (i) the state of the anatomy at each phase and (ii) the time spent in that state, estimated from long-term monitoring of the patient's breathing motion...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045852/overview-on-criteria-for-mep-monitoring
#18
David B MacDonald
Intraoperative motor evoked potentials include the D-wave as a surrogate for long-term motor outcome and muscle motor evoked potentials as a surrogate for early outcome. Their efficacy depends on excluding confounding factors and on warning criteria; insufficiently sensitive criteria could result in unpredicted deficits, whereas excessively sensitive ones could cause false alarms deterring surgical treatment and jading surgeons to alerts, eventually leading to deficits through failure to intervene. Although D-waves have few indications, they are nonsynaptic, linear, and stable-properties that support amplitude reduction criteria: >50% for intramedullary spinal cord tumor surgery and >30% to 40% for peri-Rolandic brain surgery...
January 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28045758/a-virtual-reality-simulation-model-of-spinal-ultrasound-role-in-teaching-spinal-sonoanatomy
#19
Reva Ramlogan, Ahtsham U Niazi, Rongyu Jin, James Johnson, Vincent W Chan, Anahi Perlas
BACKGROUND AND OBJECTIVES: Ultrasound assessment of the lumbar spine improves the success of spinal and epidural anesthesia, especially for patients with underlying difficult anatomy. To assist with the teaching and learning of ultrasound-guided neuraxial anesthesia, we have created an online interactive educational model (http://www.usra.ca/vspine.php and http://pie.med.utoronto.ca/vspine). The aim of the current study was to determine whether the virtual spine model improved the knowledge of neuraxial anatomy and sonoanatomy...
December 29, 2016: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28035463/sacral-nerve-stimulation-for-faecal-incontinence-in-patients-with-sacral-malformation
#20
M Brunner, Z Cui, K E Matzel
INTRODUCTION: Sacral nerve stimulation (SNS) is a common and effective treatment for faecal incontinence (FI), but accessibility of the sacral nerves is mandatory. In some cases, electrode placement fails for unknown reasons. A frequent cause could be sacral malformations, which have a high incidence (up to 24.1%) and can be unsuspected. METHODS AND RESULTS: We report two patients with FI consequent to congenital anorectal malformation and associated sacral malformation...
December 30, 2016: International Journal of Colorectal Disease
keyword
keyword
31826
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"