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Musculoskeletal MRI

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https://www.readbyqxmd.com/read/28328692/experience-with-a-care-process-model-in-the-evaluation-of-pediatric-musculoskeletal-infections-in-a-pediatric-emergency-department
#1
Lina Patel, Jeff Michael, Nancy Allen, Lisa Schroeder, Lisa Berglund, Jason G Newland
OBJECTIVES: Care process models (CPMs) for certain conditions have improved clinical outcomes in children. This study describes the implementation and impact of a CPM for the evaluation of musculoskeletal infections in a pediatric emergency department (ED). METHODS: A retrospective pre-post intervention study was performed to analyze the impact of a musculoskeletal infection CPM. Patients were identified retrospectively through electronic order history for imaging of an extremity or joint and recommended laboratory tests...
March 21, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28314901/arterial-pseudoaneurysms-of-the-shoulder-mimicking-other-entities-utilization-of-pulsation-artifact-on-musculoskeletal-mr-for-accurate-diagnosis-in-2-cases
#2
Mohammad Samim, Jacob Mandell, Stacy Smith, Neena Kapoor, Gregory Czuczman
We present two cases of pseudoaneurysm (PSA) about the shoulder mimicking more common clinical entities-soft tissue neoplasm and septic arthritis-for which biopsy of the mass and joint aspiration were requested respectively. We review the imaging findings of PSA with emphasis on findings in musculoskeletal protocol MRI, including the identification of pulsation artifact in both cases, which was critical to establishing the correct diagnosis. In the proper clinical setting, with imaging findings demonstrating a complex mass or fluid collection, MR images should be scrutinized for the presence of pulsation artifact, which can help diagnose a high-flow vascular lesion and avoid a potentially harmful invasive procedure such as biopsy...
March 18, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28301222/qualitative-3-t-proton-mr-spectroscopy-for-the-characterization-of-musculoskeletal-neoplasms-update-on-diagnostic-performance-and-indications
#3
Pedro Augusto Gondim Teixeira, Maxime Ledrich, François Kauffmann, John Mbapte Wamba, Jacques Felblinger, Alain Blum, Gabriela Hossu
OBJECTIVE: The objective of our study was to evaluate the diagnostic performance of qualitative 3-T proton MR spectroscopy ((1)H-MRS) for the characterization of musculoskeletal neoplasms. SUBJECTS AND METHODS: Proton MRS studies of 74 patients (76 lesions) with a histologically confirmed musculoskeletal neoplasm or neoplasms were prospectively included in this study. All studies were performed using a 3-T MRI scanner. Spectra were analyzed with conventional MRI software provided by the fabricant and with dedicated independent MRS software...
March 16, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28295775/comparative-study-of-conventional-and-virtual-autopsy-using-postmortem-mri-in-the-phenotypic-characterization-of-stillbirths-and-malformed-fetuses
#4
Mohan Shruthi, Neerja Gupta, Manisha Jana, Asit R Mridha, Atin Kumar, Ramesh Agarwal, Raju Sharma, Dipika Deka, Arun Kumar Gupta, Madhulika Kabra
OBJECTIVE: To prospectively compare conventional and virtual autopsy using postmortem-MRI in the phenotypic characterization of stillbirths and malformed fetuses and their acceptability to parents. METHODS: We performed whole body postmortem-MRI (1.5T) prior to conventional autopsy in 43 fetuses/still births (≥20 weeks of gestation) after excluding maternal causes of fetal death. With conventional autopsy as gold standard, postmortem-MRI findings were assessed and compared...
March 13, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28295547/practitioner-perceptions-of-the-anesthetic-needs-for-magnetic-resonance-imaging-in-pediatric-patients
#5
Glenn E Mann, Adam Canter, Singh Nair, Donna LaMonica, Madelyn Kahana, Jennifer Yoo, Ellise Delphin
There is currently an increasing use of magnetic resonance imaging (MRI) as a diagnostic tool in the pediatric population(1). MRI is often viewed as an ideal diagnostic modality because it does not require exposure to ionizing radiation, provides superior soft tissue image quality compared with computed tomography (CT) and is thus well-suited for neurological, musculoskeletal, cardiac, thoracic, and abdominal studies(2). However, MRIs require patient cooperation and extended time periods of immobility, as the studies are often long, loud, and may induce claustrophobia (2-7)...
March 12, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28290736/accuracy-and-reliability-of-marker-based-approaches-to-scale-the-pelvis-thigh-and-shank-segments-in-musculoskeletal-models
#6
Hans Kainz, Hoa Hoang, Chris Stockton, Roslyn R Boyd, David G Lloyd, Christopher P Carty
Gait analysis together with musculoskeletal modelling is widely used for research. In the absence of medical images, surface marker locations are used to scale a generic model to the individual's anthropometry. Studies evaluating the accuracy and reliability of different scaling approaches in a paediatric and/or clinical population have not yet been conducted and, therefore, formed the aim of this study. Magnetic resonance images (MRI) and motion capture data were collected from twelve participants with cerebral palsy and six typically developed participants...
March 14, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28286523/interobserver-agreement-in-magnetic-resonance-of-the-sacroiliac-joints-in-patients-with-spondyloarthritis
#7
Juan C Rueda, Sofia Arias-Correal, Andres Y Vasquez, Enrique Calvo, Paola Peña, Marlon Porras, Jose-Ignacio Angarita, Eugenia-Lucia Saldarriaga, Ana M Santos, John Londono
Background. Clinical, laboratory, and radiologic parameters are used for diagnosis and classification of spondyloarthritis (SpA). Magnetic resonance imaging (MRI) of sacroiliac (SI) joints is being increasingly used to detect early sacroiliitis. We decided to evaluate the interobserver agreement in MRI findings of SI joints of SpA patients between a local radiologist, a rheumatologist, and an expert radiologist in musculoskeletal diseases. Methods. 66 MRI images of the SI joints of patients with established diagnosis of SpA were evaluated...
2017: International Journal of Rheumatology
https://www.readbyqxmd.com/read/28283185/a-simple-but-reliable-method-for-measuring-3d-achilles-tendon-moment-arm-geometry-from-a-single-static-magnetic-resonance-scan
#8
C F Alexander, I Lum, S Reid, E Clarke, K Stannage, A El-Sallam Abd, R D Herbert, C J Donnelly
Current methods for measuring in vivo 3D muscle-tendon moment arms generally rely on the acquisition of magnetic resonance imaging (MRI) scans at multiple joint angles. However, for patients with musculoskeletal pathologies such as fixed contractures, moving a joint through its full range of motion is not always feasible. The purpose of this research was to develop a simple, but reliable in vivo 3D Achilles tendon moment arm (ATMA) technique from a single static MRI scan. To accomplish this, for nine healthy adults (5 males, 4 females), the geometry of a cylinder was fit to the 3D form of the talus dome, which was used to estimate the talocrural flexion/extension axis, and a fifth-order polynomial fit to the line of action of the Achilles tendon...
February 17, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28243704/patients-with-high-grade-pivot-shift-phenomenon-are-associated-with-higher-prevalence-of-anterolateral-ligament-injury-after-acute-anterior-cruciate-ligament-injuries
#9
Guan-Yang Song, Hui Zhang, Guan Wu, Jin Zhang, Xin Liu, Zhe Xue, Yi Qian, Hua Feng
PURPOSE: To compare the prevalence of concomitant anterolateral ligament (ALL) injury between patients with high-grade (grades II and III) pivot-shift and those with low-grade (grades 0 and I) pivot-shift phenomenon after acute anterior cruciate ligament (ACL) injuries. METHODS: Sixty-eight patients with an acute ACL injury who showed high-grade (grades II and III) pivot-shift phenomenon were enrolled as the study group. They were matched in a 1:1 fashion to another 68 ACL-injured control participants who showed low-grade (grades 0 and I) pivot-shift phenomenon during the same study period...
February 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28238666/clinical-impact-of-second-opinion-musculoskeletal-subspecialty-interpretations-during-a-multidisciplinary-orthopedic-oncology-conference
#10
Aleksandr Rozenberg, Barry E Kenneally, John A Abraham, Kristin Strogus, Johannes B Roedl, William B Morrison, Adam C Zoga
PURPOSE: To analyze the impact on clinical management when musculoskeletal radiologists render second-opinion consultations during multidisciplinary orthopedic oncology conference. METHODS: A PACS database was searched for secondary interpretations on outside MRI studies reviewed during a multidisciplinary orthopedic oncology conference from January 2014 to December 2016. Reports were compared with the original interpretations, when available. Reports were categorized using a 7-point scale: I (no discrepancy), II (undetected clinically insignificant abnormality), III (clinically insignificant difference in interpretation), IV (difference in imaging follow-up recommendation), V (equivocal initial interpretation with subsequent definitive subspecialty interpretation), VI (clinically significant difference in interpretation), VII (failure to detect a clinically significant abnormality)...
February 23, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28228877/hepatic-hodgkin-lymphoma-with-delayed-enhancement-on-ct-and-mri
#11
Yukie Higuma, Ryo Yamauchi, Ritsuko Fujimitsu, Keiko Sakamoto, Yoshinobu Shinagawa, Ayako Morita, Hiroshi Urakawa, Morishige Takeshita, Kengo Yoshimitsu
Hepatic Hodgkin lymphoma is a rare disease, characterized by the presence of abundant granulofibrous stroma, and its radiological features have rarely been described. We report a 67-year-old man, who presented with liver masses that showed apparent delayed enhancement, along with systemic lymphadenopathy and musculoskeletal lesions. Repeated percutaneous needle biopsy, however, failed to confirm the diagnosis, and surgical biopsy finally revealed small amount of Hodgkin cells and Reed-Sternberg cells. In this report, the radiological features of hepatic Hodgkin lymphoma will be presented and discussed, in correlation with its histological findings...
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28203595/acute-gastrocnemius-soleus-complex-injuries-in-national-football-league-athletes
#12
Brian C Werner, Nicole S Belkin, Steve Kennelly, Leigh Weiss, Ronnie P Barnes, Hollis G Potter, Russell F Warren, Scott A Rodeo
BACKGROUND: Lower extremity muscle injuries are common in professional football. Although less common than hamstring or quadriceps injuries in National Football League (NFL) athletes, calf injuries occur with relative frequency and have not previously been studied. PURPOSE: To evaluate gastrocnemius-soleus complex muscle injuries over the past 13 years from a single NFL team to determine the incidence of such injuries, their imaging characteristics, and return to play after such injuries and any correlation between imaging findings and prolonged return to play...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28196474/biodegradable-magnesium-herbert-screw-image-quality-and-artifacts-with-radiography-ct-and-mri
#13
Lena Sonnow, Sören Könneker, Peter M Vogt, Frank Wacker, Christian von Falck
BACKGROUND: Magnesium alloys have recently been rediscovered as biodegradable implants in musculoskeletal surgery. This study is an ex-vivo trial to evaluate the imaging characteristics of magnesium implants in different imaging modalities as compared to conventional metallic implants. METHODS: A CE-approved magnesium Herbert screw (MAGNEZIX®) and a titanium screw of the same dimensions (3.2x20 mm) were imaged using different modalities: digital radiography (DX), multidetector computed tomography (MDCT), high resolution flat panel CT (FPCT) and magnetic resonance imaging (MRI)...
February 14, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28188484/estimation-of-attachment-regions-of-hip-muscles-in-ct-image-using-muscle-attachment-probabilistic-atlas-constructed-from-measurements-in-eight-cadavers
#14
Norio Fukuda, Yoshito Otake, Masaki Takao, Futoshi Yokota, Takeshi Ogawa, Keisuke Uemura, Ryota Nakaya, Kazunori Tamura, Robert B Grupp, Amirhossein Farvardin, Mehran Armand, Nobuhiko Sugano, Yoshinobu Sato
PURPOSE: Patient-specific musculoskeletal biomechanical simulation is useful in preoperative surgical planning and postoperative assessment in orthopedic surgery and rehabilitation medicine. A difficulty in application of the patient-specific musculoskeletal modeling comes from the fact that the muscle attachment regions are typically invisible in CT and MRI. Our purpose is to develop a method for estimating patient-specific muscle attachment regions from 3D medical images and to validate with cadaver experiments...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28188338/characterisation-of-musculoskeletal-tumours-by-multivoxel-proton-mr-spectroscopy
#15
Ruchi S Patni, Deb K Boruah, Shantiranjan Sanyal, Bidyut B Gogoi, Maninder Patni, Rosy Khandelia, Nripen Gogoi
OBJECTIVE: The purpose of this study is to evaluate the role of multi-voxel proton MR spectroscopy in differentiating benign and malignant musculoskeletal tumours in a more objective way and to correlate the MRS data parameters with histopathology. METHODS AND MATERIALS: A hospital-based prospective study was carried out comprising 42 patients who underwent MRI examinations from 1 July 2013 to 30 June 2014. After routine sequences, single-slice multi-voxel proton MR spectroscopy was included at TE-135 using the PRESS sequence...
April 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28174189/sternal-stress-fracture-in-a-middle-aged-woman
#16
Justin Lee, Karl Bertrand Fields
A middle-aged premenopausal woman presented with 3 months of right chest wall pain after beginning a new weight training programme. Examination was significant only for mild-to-moderate tenderness to palpation over the right pectoral muscle and sternoclavicular joint. In-office musculoskeletal ultrasound scan, chest X-ray and shoulder X-rays were unremarkable. Subsequent MRI of the chest wall showed oedema in the sternum at the level of the sternoclavicular joint consistent with a sternal stress fracture...
February 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28161721/focal-uptake-at-the-rotator-interval-or-inferior-capsule-of-shoulder-on-18-f-fdg-pet-ct-is-associated-with-adhesive-capsulitis
#17
Radhika Sridharan, Mitchell Philip Engle, Naveen Garg, Wei Wei, Behrang Amini
OBJECTIVE: To determine if focal increased uptake at the rotator interval (RI) and/or inferior capsule (IC) on(18)F-FDG PET/CT ("positive PET") predicts the presence of adhesive capsulitis (AC). MATERIALS AND METHODS: Three populations were retrospectively examined. Group 1 included 1,137 consecutive (18)F-FDG PET/CT studies and was used to determine the prevalence of focal uptake at the RI or IC. Group 2 included 361 cases from a 10-year period with (18)F-FDG PET/CT and MRI of shoulder performed within 45 days of each other and was used to enrich the study group...
February 4, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28155840/osteitis-in-the-course-of-pyodema-gangrenosum-case-raport
#18
Andrzej Kaźmierczak-Koćwin, Robert Pieczyrak, Damian Kusz, Eugeniusz Kucharz, Marcin Kusz
We present the case of a male patient admitted to the Department of Orthopaedics and Musculoskeletal Traumatology, Medical University of Silesia (MUS) in Katowice, due to a right hindfoot abscess with calcaneal infiltration and pain in the forehead and the back, with evidence of local inflammation. The patient had a history of ulcerative colitis and sclerosing cholangitis was suspected. During the hospital stay, the patient underwent calcaneal CT, surgery (resection of an inflammatory focus) and MRI of the thoracic and lumbosacral spine, which revealed inflamed spinous processes of the Th10, Th11 and Th12 vertebrae...
November 30, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28144827/biomarkers-for-musculoskeletal-pain-conditions-use-of-brain-imaging-and-machine-learning
#19
REVIEW
Jeff Boissoneault, Landrew Sevel, Janelle Letzen, Michael Robinson, Roland Staud
Chronic musculoskeletal pain condition often shows poor correlations between tissue abnormalities and clinical pain. Therefore, classification of pain conditions like chronic low back pain, osteoarthritis, and fibromyalgia depends mostly on self report and less on objective findings like X-ray or magnetic resonance imaging (MRI) changes. However, recent advances in structural and functional brain imaging have identified brain abnormalities in chronic pain conditions that can be used for illness classification...
January 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28143497/gait-disorders-in-the-elderly-and-dual-task-gait-analysis-a-new-approach-for-identifying-motor-phenotypes
#20
Bernard Auvinet, Claude Touzard, François Montestruc, Arnaud Delafond, Vincent Goeb
BACKGROUND: Gait disorders and gait analysis under single and dual-task conditions are topics of great interest, but very few studies have looked for the relevance of gait analysis under dual-task conditions in elderly people on the basis of a clinical approach. METHODS: An observational study including 103 patients (mean age 76.3 ± 7.2, women 56%) suffering from gait disorders or memory impairment was conducted. Gait analysis under dual-task conditions was carried out for all patients...
January 31, 2017: Journal of Neuroengineering and Rehabilitation
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