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Musculoskeletal imaging

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https://www.readbyqxmd.com/read/29332201/gouty-involvement-of-the-patella-and-extensor-mechanism-of-the-knee-mimicking-aggressive-neoplasm-a-case-series
#1
Christopher Kester, Matthew T Wallace, James Jelinek, Albert Aboulafia
Gout is a common inflammatory crystal deposition disease that occurs in many joints throughout the body. Active gout is most often associated with painful synovitis causing searing joint pains, but gout can also produce large masses of space-occupying deposits called tophi. Tophi are most frequently seen in juxta-articular locations with or without bony erosion and are often misdiagnosed as degenerative joint disease. Soft tissue deposits and tendon involvement are also known manifestations of gout, but can present with indeterminate and alarming findings on imaging...
January 14, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29331208/wrist-a-wrist-image-segmentation-toolkit-for-carpal-bone-delineation-from-mri
#2
Brent Foster, Anand A Joshi, Marissa Borgese, Yasser Abdelhafez, Robert D Boutin, Abhijit J Chaudhari
Segmentation of the carpal bones from 3D imaging modalities, such as magnetic resonance imaging (MRI), is commonly performed for in vivo analysis of wrist morphology, kinematics, and biomechanics. This crucial task is typically carried out manually and is labor intensive, time consuming, subject to high inter- and intra-observer variability, and may result in topologically incorrect surfaces. We present a method, WRist Image Segmentation Toolkit (WRIST), for 3D semi-automated, rapid segmentation of the carpal bones of the wrist from MRI...
December 28, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/29330951/dynamic-musculoskeletal-functional-morphology-integrating-dicect-and-xromm
#3
Courtney P Orsbon, Nicholas J Gidmark, Callum F Ross
The tradeoff between force and velocity in skeletal muscle is a fundamental constraint on vertebrate musculoskeletal design (form:function relationships). Understanding how and why different lineages address this biomechanical problem is an important goal of vertebrate musculoskeletal functional morphology. Our ability to answer questions about the different solutions to this tradeoff has been significantly improved by recent advances in techniques for quantifying musculoskeletal morphology and movement. Herein, we have three objectives: (1) review the morphological and physiological parameters that affect muscle function and how these parameters interact; (2) discuss the necessity of integrating morphological and physiological lines of evidence to understand muscle function and the new, high resolution imaging technologies that do so; and (3) present a method that integrates high spatiotemporal resolution motion capture (XROMM, including its corollary fluoromicrometry), high resolution soft tissue imaging (diceCT), and electromyography to study musculoskeletal dynamics in vivo...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29326867/cavitary-lung-lesion-suspicious-for-malignancy-reveals-mycobacterium-xenopi
#4
Sumit Fogla, Vaishali M Pansare, Luis G Camero, Uzma Syeda, Naveen Patil, Arun Chaudhury
We report the case of a 68-year-old gentleman who presented with musculoskeletal chest pain which appeared suddenly when he bent over with his dog. The chest pain was localized to the left lower chest and increased with movement and deep breathing. The patient did not complain weight loss, night sweat, fever or chill. He complained of mild cough, with expectoration of whitish mucus. Imaging revealed cavitary chest lesion in the right upper lobe, which was initially suspected to be lung cancer. The patient had a 50-year-old history of smoking 2 packs per day...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29324458/ultrasound-imaging-and-guided-injection-for-the-lateral-and-posterior-hip
#5
Ke-Vin Chang, Wei-Ting Wu, Henry L Lew, Levent Özçakar
Ultrasound has emerged as one of the most utilized tools to diagnose musculoskeletal disorders and to assist in interventions. Traditionally, sonographic examination of the hip joint has been challenging because most of the major structures are deeply situated, thus requiring the use of curvilinear transducer for better penetrance. The posterior lateral hip is a frequent area for musculoskeletal pain and nerve entrapments. Common disorders include greater trochanteric pain syndrome, gluteus medius tendinopathy, piriformis syndrome, pudendal neuralgia and proximal hamstring tendinopathy...
January 11, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29322877/topographical-variation-of-human-femoral-articular-cartilage-thickness-t1rho-and-t2-relaxation-times-is-related-to-local-loading-during-walking
#6
Sam Van Rossom, Mariska Wesseling, Dieter Van Assche, Ilse Jonkers
Objective Early detection of degenerative changes in the cartilage matrix composition is essential for evaluating early interventions that slow down osteoarthritis (OA) initiation. T1rho and T2 relaxation times were found to be effective for detecting early changes in proteoglycan and collagen content. To use these magnetic resonance imaging (MRI) methods, it is important to document the topographical variation in cartilage thickness, T1rho and T2 relaxation times in a healthy population. As OA is partially mechanically driven, the relation between these MRI-based parameters and localized mechanical loading during walking was investigated...
January 1, 2018: Cartilage
https://www.readbyqxmd.com/read/29320313/acute-radiologic-manifestations-of-america-s-opioid-epidemic
#7
David D B Bates, Katherine Gallagher, HeiShun Yu, Jennifer Uyeda, Akira M Murakami, Bindu N Setty, Stephan W Anderson, Mariza O Clement
The United States is in the midst of an opioid use epidemic, which has severe medical, social, and economic consequences. Addictions to and abuse of prescription and illicit opioids are increasing, and emergency department radiologists are increasingly being faced with the task of examining patients who present with opioid-related complications. These complications may be the result of direct drug toxicity or nonsterile injection of the drugs. Neurologic, musculoskeletal, cardiopulmonary, genitourinary, and gastrointestinal complications may be evident at diagnostic imaging in emergent settings...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29306550/wrist-tendon-moment-arms-quantification-by-imaging-and-experimental-techniques
#8
Angela K Garland, Darshan S Shah, Angela E Kedgley
Subject-specific musculoskeletal models require accurate values of muscle moment arms. The aim of this study was to compare moment arms of wrist tendons obtained from non-invasive magnetic resonance imaging (MRI) to those obtained from an in vitro experimental approach. MRI was performed on ten upper limb cadaveric specimens to obtain the centrelines for the flexor carpi radialis (FCR), flexor carpi ulnaris (FCU), extensor carpi radialis longus (ECRL), extensor carpi radialis brevis (ECRB), extensor carpi ulnaris (ECU), and abductor pollicis longus (APL) tendons...
December 24, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29302798/cone-beam-ct-of-the-musculoskeletal-system-clinical-applications
#9
REVIEW
Magdalena Posadzy, Julie Desimpel, Filip Vanhoenacker
OBJECTIVES: The aim of this pictorial review is to illustrate the use of CBCT in a broad spectrum of musculoskeletal disorders and to compare its diagnostic merit with other imaging modalities, such as conventional radiography (CR), Multidetector Computed Tomography (MDCT) and Magnetic Resonance Imaging. BACKGROUND: Cone Beam Computed Tomography (CBCT) has been widely used for dental imaging for over two decades. DISCUSSION: Current CBCT equipment allows use for imaging of various musculoskeletal applications...
January 4, 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29302640/systematic-approach-to-musculoskeletal-benign-tumors
#10
REVIEW
Masood Umer, Obada H A Hasan, Dawar Khan, Nasir Uddin, Shahryar Noordin
The radiologic workup of musculoskeletal tumors can be both cost-efficient and extremely helpful to the referring clinician if one proceeds in a thoughtful and logical manner. It should be remembered that plain films remain the most reliable imaging method for assessment of both biological activity and probable histologic diagnosis of an osseous lesion. Further investigations are of help to determine the extent of lesion and to help in staging. In order to do this, we have found it useful to include an assessment of 10 determinants in the description of a tumor...
December 2017: International Journal of Surgery. Oncology
https://www.readbyqxmd.com/read/29286445/3d-ultrasound-imaging-fast-and-cost-effective-morphometry-of-musculoskeletal-tissue
#11
Guido Weide, Stephan van der Zwaard, Peter A Huijing, Richard T Jaspers, Jaap Harlaar
The developmental goal of 3D ultrasound imaging (3DUS) is to engineer a modality to perform 3D morphological ultrasound analysis of human muscles. 3DUS images are constructed from calibrated freehand 2D B-mode ultrasound images, which are positioned into a voxel array. Ultrasound (US) imaging allows quantification of muscle size, fascicle length, and angle of pennation. These morphological variables are important determinants of muscle force and length range of force exertion. The presented protocol describes an approach to determine volume and fascicle length of m...
November 27, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29280168/resident-accuracy-of-musculoskeletal-palpation-with-ultrasound-verification
#12
Priyesh Mehta, Ethan B Rand, Christopher J Visco, James Wyss
OBJECTIVES: The purpose of this observational study was to determine the accuracy of musculoskeletal palpation of the medial joint line of the knee, medial patellar tendon, and posterior tibialis tendon verified by ultrasound imaging among physical medicine and rehabilitation residents. METHODS: Eighteen physical medicine and rehabilitation resident physicians at a single specialized institution were asked to identify the medial joint line of the knee, medial patellar tendon, and posterior tibialis tendon on 2 separate standardized patient models during a single data collection...
December 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29279946/adaptive-statistical-iterative-reconstruction-use-for-radiation-dose-reduction-in-pediatric-lower-extremity-ct-impact-on-diagnostic-image-quality
#13
Amisha Shah, Mitchell Rees, Erica Kar, Kimberly Bolton, Vincent Lee, Ashok Panigrahy
BACKGROUND: For the past several years, increased levels of imaging radiation and cumulative radiation to children has been a significant concern. Although several measures have been taken to reduce radiation dose during computed tomography (CT) scan, the newer dose reduction software adaptive statistical iterative reconstruction (ASIR) has been an effective technique in reducing radiation dose. To our knowledge, no studies are published that assess the effect of ASIR on extremity CT scans in children...
December 26, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29276784/two-dimensional-digital-photography-for-child-body-posture-evaluation-standardized-technique-reliable-parameters-and-normative-data-for-age-7-10-years
#14
REVIEW
L Stolinski, M Kozinoga, D Czaprowski, M Tyrakowski, P Cerny, N Suzuki, T Kotwicki
Background: Digital photogrammetry provides measurements of body angles or distances which allow for quantitative posture assessment with or without the use of external markers. It is becoming an increasingly popular tool for the assessment of the musculoskeletal system. The aim of this paper is to present a structured method for the analysis of posture and its changes using a standardized digital photography technique. Material and methods: The purpose of the study was twofold...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/29276462/chiropractic-care-in-the-management-of-inactive-ankylosing-spondylitis-a-case-series
#15
Stacey M Cornelson, David Beavers, Allison Harvey, William Hogarth, Norman W Kettner
Objective: This report describes chiropractic management for 3 cases of inactive ankylosing spondylitis (AS). Clinical Features: A 25-year-old woman presented with chronic, mechanical neck pain and stiffness that was ultimately diagnosed as AS. A 23-year-old man presented with chronic low back and left hip pain that was diagnosed as AS. A 31-year-old man with low back pain presented with a known diagnosis of AS. Physical examination in 2 cases failed to identify systemic findings associated with AS...
December 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/29274860/primary-pyomyositis-in-children
#16
M M Elzohairy
BACKGROUND: Pyomyositis PM is defined as a primary pyogenic infection of the striated skeletal muscle; although it has many dystrophic musculoskeletal complications, it is always misdiagnosed by many orthopedic surgeons. HYPOTHESIS: PM is rare in temperate climates and usually considered to be a tropical disease, until recent times, after globalization, it is possible to occur in the subtropical climate as in our country. MATERIAL AND METHODS: In the present series, the results of 15 children patients with primary pyomyositis have been reviewed...
December 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29274196/musculoskeletal-ultrasound-for-intra-articular-bleed-detection-a-highly-sensitive-imaging-modality-compared-to-conventional-magnetic-resonance-imaging
#17
S Nguyen, X Lu, Y Ma, J Du, E Y Chang, A von Drygalski
BACKGROUND: There is increasing demand for musculoskeletal ultrasound (MSKUS) to detect hemophilic joint bleeding, but there is uncertainty regarding blood detection concentration thresholds or if magnetic resonance imaging (MRI) is more accurate. AIMS: Compare the sensitivity of blood detection by MSKUS and MRI. METHODS: Increasing blood concentrations in plasma were imaged with MSKUS and MRI 1-2 hours, 3-4 days and 7 days after blood withdrawal in vitro, and after injection into cadaveric pig joints...
December 23, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29273829/isolated-subcutaneous-nontuberculous-mycobacterial-infection-a-rare-case-initially-mischaracterized-as-a-soft-tissue-malignancy
#18
Hee Young Choi, Min Hee Lee, Jong-Seok Lee, In Hye Song, Kyung-Ja Cho
The occurrence of nontuberculous mycobacterial (NTM) infection is rare, and the involvement of the musculoskeletal system is even less common. However, the incidence of soft tissue and skin NTM infection is increasing, particularly in patients who undergo injections and minor surgical procedures. Given the non-specific clinical manifestations of NTM infection, the lack of knowledge among physicians regarding this rare infection could lead to inaccurate and delayed diagnosis. Herein, we present a case of an isolated subcutaneous NTM infection caused by Mycobacterium abscessus in the upper back of an immunocompetent 68-year-old woman...
December 22, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29250856/simultaneous-bilateral-knee-mr-imaging
#19
Feliks Kogan, Evan Levine, Akshay S Chaudhari, Uchechukwuka D Monu, Kevin Epperson, Edwin H G Oei, Garry E Gold, Brian A Hargreaves
PURPOSE: To demonstrate and evaluate the scan time and quantitative accuracy of simultaneous bilateral-knee imaging compared with single-knee acquisitions. METHODS: Hardware modifications and safety testing was performed to enable MR imaging with two 16-channel flexible coil arrays. Noise covariance and sensitivity-encoding g-factor maps for the dual-coil-array configuration were computed to evaluate coil cross-talk and noise amplification. Ten healthy volunteers were imaged on a 3T MRI scanner with both dual-coil-array bilateral-knee and single-coil-array single-knee configurations...
December 17, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29249068/melatonin-as-an-alternative-sedation-method-during-magnetic-resonance-imaging-in-preschool-children-with-musculoskeletal-problems
#20
Agneza Marija Pasini, Josip Marjanović, Goran Roić, Nikola Dukarić, Ana Tripalo Batoš, Zoran Bahtijarević, Alenka Gagro
Magnetic resonance imaging (MRI) in preschool children is often challenging due to excessive motion artifacts. Sedation or general anesthesia (GA) is commonly used to prevent children from moving in the MRI scanner, with increased risk for cardiopulmonary complications and requirement for skilled personnel. Herein, we investigated whether oral melatonin, a natural hormone implicated in circadian rhythm regulation, could be used as an alternative sedation method prior to the MRI in preschool children with musculoskeletal problems...
December 16, 2017: European Journal of Pediatrics
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