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Musculoskeletal MRI

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https://www.readbyqxmd.com/read/29682313/systematic-assessment-of-the-growth-plates-of-the-wrist-in-young-gymnasts-development-and-validation-of-the-amsterdam-mri-assessment-of-the-physis-amphys-protocol
#1
Laura S Kox, Rik B J Kraan, Kees F van Dijke, Robert Hemke, Sjoerd Jens, Milko C de Jonge, Edwin H G Oei, Frank F Smithuis, Maaike P Terra, Mario Maas
Objectives: To develop and validate a protocol for MRI assessment of the distal radial and ulnar periphyseal area in gymnasts and non-gymnasts. Methods: Twenty-four gymnasts with wrist pain, 18 asymptomatic gymnasts and 24 non-gymnastic controls (33 girls) underwent MRI of the wrist on a 3T scanner. Sequences included coronal proton density-weighted images with and without fat saturation, and three-dimensional water-selective cartilage scan and T2 Dixon series. Skeletal age was determined using hand radiographs...
2018: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29673935/investigation-of-the-dependence-of-joint-contact-forces-on-musculotendon-parameters-using-a-codified-workflow-for-image-based-modelling
#2
Luca Modenese, Erica Montefiori, Anqi Wang, Stefan Wesarg, Marco Viceconti, Claudia Mazzà
The generation of subject-specific musculoskeletal models of the lower limb has become a feasible task thanks to improvements in medical imaging technology and musculoskeletal modelling software. Nevertheless, clinical use of these models in paediatric applications is still limited for what concerns the estimation of muscle and joint contact forces. Aiming to improve the current state of the art, a methodology to generate highly personalized subject-specific musculoskeletal models of the lower limb based on magnetic resonance imaging (MRI) scans was codified as a step-by-step procedure and applied to data from eight juvenile individuals...
March 30, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29673013/postural-control-during-a-transition-task-in-haemophilic-children-adolescents-and-young-adults-with-haemophilic-ankle-arthropathy
#3
K Deschamps, F Staes, M Eerdekens, K Peerlinck, C Hermans, J Vandesande, S Lobet
BACKGROUND: The aim of this study was to determine whether young haemophilic boys with and without MRI-based signs of ankle arthropathy demonstrate reduced balance ability during a transition task with eyes open and eyes closed. METHODS: Thirty-four haemophilic bodies and 28 typically developing boys aged 6-20 years participated to this study. Structural integrity of the tarsal foot joints of all haemophilic boys was assessed with MRI. All participants performed a standard transition task from double-leg stance to single-leg stance with eyes open and eyes closed...
April 19, 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29662913/high-rate-of-missed-lateral-meniscus-posterior-root-tears-on-preoperative-magnetic-resonance-imaging
#4
Aaron J Krych, Isabella T Wu, Vishal S Desai, Naveen S Murthy, Mark S Collins, Daniel B F Saris, Bruce A Levy, Michael J Stuart
Background: Lateral meniscus posterior root tears (LMPRTs), if left untreated, can cause devastating effects to the knee, with rapid articular cartilage degeneration and loss of the meniscus as a secondary stabilizer. Detection and surgical repair of these defects have been linked to favorable outcomes, but preoperative identification of LMPRTs continues to be challenging. Purpose: To determine the rate of LMPRTs diagnosed preoperatively on magnetic resonance imaging (MRI) in a consecutive series of arthroscopically confirmed LMPRTs...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29658780/inter-and-intraobserver-variability-of-an-anatomical-landmark-based-manual-segmentation-method-by-mri-for-the-assessment-of-skeletal-muscle-fat-content-and-area-in-subjects-from-the-general-population
#5
Lena Sophie Kiefer, Jana Fabian, Roberto Lorbeer, Jürgen Machann, Corinna Storz, Mareen Sarah Kraus, Elke Wintermeyer, Christopher L Schlett, Frank Roemer, Konstantin Nikolaou, Annette Peters, Fabian Bamberg
OBJECTIVES: Changes in skeletal muscle composition, such as fat content and mass, may exert unique metabolic and musculoskeletal risks; however, the reproducibility of their assessment is unknown. We determined the variability of the assessment of skeletal muscle fat content and area by magnetic resonance imaging (MRI) in a population-based sample. METHODS: A random sample from a prospective, community-based cohort study (KORA-FF4) was included. Skeletal muscle fat content was quantified as proton-density fat-fraction (PDFF) and area as cross-sectional area (CSA) in multi-echo Dixon sequences (TR 8...
April 16, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29656303/spondylodiscitis-following-endovascular-abdominal-aortic-aneurysm-repair-imaging-perspectives-from-a-single-centre-s-experience
#6
Ramin Mandegaran, Christopher S W Tang, Erlick A C Pereira, Ali Zavareh
OBJECTIVE: Very few reports have previously described spondylodiscitis as a potential complication of endovascular aortic aneurysm repair (EVAR). We present to our knowledge the first case series of spondylodiscitis following EVAR based on our institution's experience over an 11-year period. Particular attention is paid to the key imaging features and challenges encountered when performing spinal imaging in this complex patient group. MATERIALS AND METHODS: Of 1,847 patients who underwent EVAR at our institution between January 2006 and January 2017, a total of 9 patients were identified with imaging features of spondylodiscitis (0...
April 14, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29626940/pet-mri-in-infection-and-inflammation
#7
REVIEW
Martina Sollini, Raffaella Berchiolli, Margarita Kirienko, Alexia Rossi, A W J M Glaudemans, Riemer Slart, Paola Anna Erba
Hybrid positron emission tomography/magnetic resonance imaging (PET/MR) systems are now more and more available for clinical use. PET/MR combines the unique features of MR including excellent soft tissue contrast, diffusion-weighted imaging, dynamic contrast-enhanced imaging, fMRI and other specialized sequences as well as MR spectroscopy with the quantitative physiologic information that is provided by PET. Most of the evidence of the potential clinical utility of PET/MRI is available for neuroimaging. Other areas, where PET/MR can play a larger role include head and neck, upper abdominal, and pelvic tumours...
May 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29619578/efficiency-improvement-in-a-busy-radiology-practice-determination-of-musculoskeletal-magnetic-resonance-imaging-protocol-using-deep-learning-convolutional-neural-networks
#8
Young Han Lee
The purposes of this study are to evaluate the feasibility of protocol determination with a convolutional neural networks (CNN) classifier based on short-text classification and to evaluate the agreements by comparing protocols determined by CNN with those determined by musculoskeletal radiologists. Following institutional review board approval, the database of a hospital information system (HIS) was queried for lists of MRI examinations, referring department, patient age, and patient gender. These were exported to a local workstation for analyses: 5258 and 1018 consecutive musculoskeletal MRI examinations were used for the training and test datasets, respectively...
April 4, 2018: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/29615178/unusual-presentation-of-fibrosarcoma-in-a-child
#9
Afshan Fayyaz, Chaudhry Aqeel Safdar
Malignant soft tissue tumours are rare in infants. Specific radiologic features help differentiate benign from malignant musculoskeletal entities. We report a case of malignant soft tissue tumour with initial radiologic evaluation suggesting a benign entity, thus delaying diagnosis. The case was treated as a case of cystic hygroma, suggested by ultrasound and MRI with good initial response to bleomycin injection. Later, symptoms recurred with poor response to repeat therapy which led to review the diagnosis...
April 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29582464/super-resolution-musculoskeletal-mri-using-deep-learning
#10
Akshay S Chaudhari, Zhongnan Fang, Feliks Kogan, Jeff Wood, Kathryn J Stevens, Eric K Gibbons, Jin Hyung Lee, Garry E Gold, Brian A Hargreaves
PURPOSE: To develop a super-resolution technique using convolutional neural networks for generating thin-slice knee MR images from thicker input slices, and compare this method with alternative through-plane interpolation methods. METHODS: We implemented a 3D convolutional neural network entitled DeepResolve to learn residual-based transformations between high-resolution thin-slice images and lower-resolution thick-slice images at the same center locations. DeepResolve was trained using 124 double echo in steady-state (DESS) data sets with 0...
March 26, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29574547/hip-capsular-thickness-correlates-with-range-of-motion-limitations-in-femoroacetabular-impingement
#11
Kailai Zhang, Darren de Sa, Hang Yu, Hema Nalini Choudur, Nicole Simunovic, Olufemi Rolland Ayeni
PURPOSE: Femoroacetabular impingement (FAI) is a clinical entity of the hip causing derangements in range of motion, pain, gait, and function. Computer-assisted modeling and clinical studies suggest that patients with FAI have increased capsular thickness compared to those without.A retrospective chart review was performed to assess relationships between capsular thickness, hip range of motion, and demographic factors in patients with FAI. METHODS: Local Research Ethics Board approval was obtained to extract electronic medical records for 188 patients at a single institution who had undergone hip arthroscopy...
March 24, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29553970/the-value-of-99mtc-mdp-bone-spect-ct-in-evaluation-of-patients-with-painful-knee-prosthesis
#12
Ramin Mandegaran, Kanhaiyalal Agrawal, Sanjay Vijayanathan, Gopinath Gnanasegaran
OBJECTIVE: The purpose of this study was to assess the incremental value of technetium-99m-methyl diphosphonate (Tc-MDP) single-photon emission computed tomography/computed tomography (SPECT/CT) over Tc-MDP two-phase bone scan (TPBS) in the assessment of the patients with pain following knee arthroplasty. PATIENTS AND METHODS: Tc-MDP TPBS and Tc-MDP SPECT/CT were performed in 49 patients with knee pain after knee arthroplasty. The scans were reviewed by two readers (nuclear medicine physician and musculoskeletal radiologist)...
March 16, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29541624/quantitative-imaging-techniques-for-the-assessment-of-osteoporosis-and-sarcopenia
#13
REVIEW
Sara Guerri, Daniele Mercatelli, Maria Pilar Aparisi Gómez, Alessandro Napoli, Giuseppe Battista, Giuseppe Guglielmi, Alberto Bazzocchi
Bone and muscle are two deeply interconnected organs and a strong relationship between them exists in their development and maintenance. The peak of both bone and muscle mass is achieved in early adulthood, followed by a progressive decline after the age of 40. The increase in life expectancy in developed countries resulted in an increase of degenerative diseases affecting the musculoskeletal system. Osteoporosis and sarcopenia represent a major cause of morbidity and mortality in the elderly population and are associated with a significant increase in healthcare costs...
February 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29522363/mri-to-investigate-iliac-artery-wall-thickness-in-triathletes
#14
Susanne Regus, Veronika Almási-Sperling, Rolf Janka, Ulrich Rother, Michael Lell, Alexander Meyer, Werner Lang
OBJECTIVES: Endofibrosis was first described in endurance athletes. This rare disease is characterized by intimal hyperplasia of iliac arteries. Due to non-specific symptoms diagnosing could be very challenging and delayed. This represents a serious problem not only for affected athletes but also for consulting physicians. The aim of this study was to analyze intimal thickness of iliac arteries using non-contrast magnetic resonance imaging (MRI) in competitive triathletes suffering from exercise induced leg pain consistent with symptoms caused by endofibrosis...
March 9, 2018: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29521888/assessment-of-low-grade-meniscal-and-cartilage-damage-of-the-knee-at-7-t-a-comparison-to-3-t-imaging-with-arthroscopic-correlation
#15
Björn Friebe, Martin Richter, Susanne Penzlin, Christian Stärke, Siegfried Kropf, Christoph Lohmann, Frank Fischbach, Oliver Speck
OBJECTIVES: The aim of this study was to compare the assessment of low-grade meniscal tears and cartilage damage in ultrahigh-field magnetic resonance imaging (MRI) at 7 T to routine clinical MRI at 3 T. MATERIALS AND METHODS: This study was approved by the local ethics committee, and written informed consent was obtained from each patient. Forty-one patients with suspected meniscal damage or mild osteoarthritis (Kellgren-Lawrence score, 0-2) received 7 T as well as routine clinical 3 T consecutively...
March 8, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29520189/clinical-feasibility-of-synthetic-magnetic-resonance-imaging-in-the-diagnosis-of-internal-derangements-of-the-knee
#16
Jisook Yi, Young Han Lee, Ho-Taek Song, Jin-Suck Suh
Objective: To evaluate the feasibility of synthetic magnetic resonance imaging (MRI) compared to conventional MRI for the diagnosis of internal derangements of the knee at 3T. Materials and Methods: Following Institutional Review Board approval, image sets of conventional and synthetic MRI in 39 patients were included. Two musculoskeletal radiologists compared the image sets and qualitatively analyzed the images. Subjective image quality was assessed using a four-grade scale...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29507030/delayed-diagnosis-of-chronic-postoperative-sternal-infection-a-rare-case-of-sternal-tuberculosis
#17
Victoria Rizzo, Yousuf Salmasi, Michael Hunter, Pushpinder Sidhu
Sternal osteomyelitis secondary to mycobacterium tuberculosis (TB) is rare, with <1% of musculoskeletal TB cases reported. The recurrent scenario is unresolving infection and delayed diagnosis. A 75-year-old woman presented with a persistently discharging sternal wound 10 months after coronary artery bypass grafting. Multiple antibiotics, wound debridement and removal of sternal wires was attempted; however, progression to local osteomyelitis and sternoclavicular joint destruction occurred. Tissue biopsies were finally sent for mycobacterial culture testing positive for Mycobacterium tuberculosis High index of suspicion is necessary for diagnosis of sternal tuberculosis, confirmed through timely microbiological investigations...
March 5, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29494711/use-of-a-small-bore-needle-arthroscope-to-diagnose-intra-articular-knee-pathology-comparison-with-magnetic-resonance-imaging
#18
Carl A Deirmengian, Joshua S Dines, Joseph V Vernace, Michael S Schwartz, R Alexander Creighton, James N Gladstone
The use of arthroscopy for purely diagnostic purposes has been largely supplanted by noninvasive technologies, such as magnetic resonance imaging (MRI). The mi-eye+TM (Trice Medical) technology is a small-bore needle unit for in-office arthroscopy. We conducted a pilot study comparing the mi-eye⁺™ unit with MRI, using surgical arthroscopy as a gold-standard reference. We hypothesized that the mi-eye⁺™ needle arthroscope, which can be used in an office setting, would be equivalent to MRI for the diagnosis of intra-articular pathology of the knee...
February 2018: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29493313/factors-associated-with-early-initiation-of-disease-modifying-drug-treatment-in-newly-diagnosed-patients-with-multiple-sclerosis
#19
Natalie C Edwards, Michael Munsell, Joseph Menzin, Amy L Phillips
OBJECTIVE: To examine the time to first disease-modifying drug (DMD) treatment and to identify factors associated with early DMD initiation in newly diagnosed patients with MS. METHODS: This retrospective cohort study included newly diagnosed patients with MS from a US administrative claims database, aged 18-65 years, with a first MS diagnosis (ICD-9-CM code: 340.xx) between January 1, 2007 and June 30, 2013 (index date), continuous eligibility for 12 months pre- and 24 months post-index, and initiated DMD treatment within 2 years...
March 1, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29489411/who-refers-musculoskeletal-extremity-imaging-examinations-to-radiologists
#20
Paul Harkey, Richard Duszak, Soterios Gyftopoulos, Andrew B Rosenkrantz
OBJECTIVE: The purpose of this study is to identify the specialty characteristics of providers referring musculoskeletal (MSK) extremity imaging examinations to radiologists, so as to better understand the drivers of MSK imaging utilization and potentially improve the appropriateness of such imaging examinations. MATERIALS AND METHODS: Data on provider referral for MSK extremity imaging services were extracted from the 2014 Medicare Referring Provider Utilization for Procedures public use file, which aggregates data on diagnostic procedures according to referring provider identities and service codes...
April 2018: AJR. American Journal of Roentgenology
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