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Musculoskeletal MRI

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https://www.readbyqxmd.com/read/27896400/quantitative-assessment-of-the-supraspinatus-tendon-on-mri-using-t2-t2-mapping-and-shear-wave-ultrasound-elastography-a-pilot-study
#1
Konstantin Krepkin, Mary Bruno, José G Raya, Ronald S Adler, Soterios Gyftopoulos
OBJECTIVE: To determine whether there is an association between T2/T2* mapping and supraspinatus tendon mechanical properties as assessed by shear-wave ultrasound elastography (SWE). MATERIALS AND METHODS: This HIPAA-compliant prospective pilot study received approval from our hospital's institutional review board. Eight patients (3 males/5 females; age range 44-72 years) and nine shoulders underwent conventional shoulder MRI, T2/T2* mapping on a 3-T scanner, and SWE...
November 28, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27892880/mri-cross-sectional-atlas-of-normal-canine-cervical-musculoskeletal-structure
#2
M Alizadeh, C Zindl, M J Allen, G G Knapik, N Fitzpatrick, W S Marras
Although magnetic resonance imaging (MRI) has been increasingly used as a diagnostic tool for cervical spine injuries in canines, a comprehensive normal MRI anatomy of the canine cervical spine muscles is lacking. Therefore, the purpose of this study was to build a magnetic resonance imaging atlas of the normal cross sectional anatomy of the muscles of the canine cervical spine. MRI scans were performed on a canine cadaver using a combination of T1 and T2-weighted images in the transverse, sagittal and dorsal planes acquired at a slice thickness of 1mm...
September 30, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27886207/characteristic-tetrapod-musculoskeletal-limb-phenotype-emerged-more-than-400-mya-in-basal-lobe-finned-fishes
#3
Rui Diogo, Peter Johnston, Julia L Molnar, Borja Esteve-Altava
Previous accounts of the origin of tetrapod limbs have postulated a relatively sudden change, after the split between extant lobe-finned fish and tetrapods, from a very simple fin phenotype with only two muscles to the highly complex tetrapod condition. The evolutionary changes that led to the muscular anatomy of tetrapod limbs have therefore remained relatively unexplored. We performed dissections, histological sections, and MRI scans of the closest living relatives of tetrapods: coelacanths and lungfish. Combined with previous comparative, developmental and paleontological information, our findings suggest that the characteristic tetrapod musculoskeletal limb phenotype was already present in the Silurian last common ancestor of extant sarcopterygians, with the exception of the autopod (hand/foot) structures, which have no clear correspondence with fish structures...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27853698/primary-tuberculosis-of-hand-soft-tissue
#4
Mohd Altaf Mir, Imran Ahmad, Mihd Yaseen
The musculoskeletal extrapulmonary tuberculosis is uncommon, the upper extremity tuberculosis is not common and the mycobacterial involvement of skin of hands and synovial sheath of tendons is rare. This prospective observational study was undertaken between August 2014 and December 2015 in a tertiary referral hospital. Patients attending with suspected primary tuberculosis of soft tissue of the hand were included. Anteroposterior and lateral radiographs of the hand, wrist and lung and MRI were undertaken. A diagnosis of tuberculosis was made based on histology, and positive culture for Mycobacterium...
September 2016: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/27845359/characterizing-the-blood-oxygen-level-dependent-fluctuations-in-musculoskeletal-tumours-using-functional-magnetic-resonance-imaging
#5
Li-Sha Duan, Meng-Jun Wang, Feng Sun, Zhen-Jiang Zhao, Mei Xing, Yu-Feng Zang, Steven Louis, Sheng-Jie Cui, Jian-Ling Cui, Han Zhang
This study characterized the blood oxygen level-dependent (BOLD) fluctuations in benign and malignant musculoskeletal tumours via power spectrum analyses in pre-established low-frequency bands. BOLD MRI and T1-weighted imaging (T1WI) were collected for 52 patients with musculoskeletal tumours. Three ROIs were drawn on the T1WI image in the tumours' central regions, peripheral regions and neighbouring tissue. The power spectrum of the BOLD within each ROI was calculated and divided into the following four frequency bands: 0...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27826171/magnetic-resonance-imaging-in-inflammatory-rheumatoid-diseases
#6
REVIEW
Iwona Sudoł-Szopińska, Joanna Mróz, Monika Ostrowska, Brygida Kwiatkowska
Magnetic resonance (MR) is used more and more frequently to diagnose changes in the musculoskeletal system in the course of rheumatic diseases, at their initial assessment, for treatment monitoring and for identification of complications. The article presents the history of magnetic resonance imaging, the basic principles underlying its operation as well as types of magnets, coils and MRI protocols used in the diagnostic process of rheumatic diseases. It enumerates advantages and disadvantages of individual MRI scanners...
2016: Reumatologia
https://www.readbyqxmd.com/read/27823810/-the-value-of-mri-in-the-diagnosis-of-joint-involvement-in-malignant-primitive-tumors-of-the-knee
#7
Mouna Chelli Bouaziz, Hend Riahi, Meriem Mechri, Leila Abid, Mohamed Rafaa, Mohamed Fethi Ladeb
INTRODUCTION: Surgical treatment of malignant primitive tumors of bone needs a precise preoperative assessment of tumor local extension. Joint involvement (JI) represents the most important finding to determine, for the choice of surgical procedure (intra- or extra-articular resection). OBJECTIVE: To determine the value of different MR signs for the diagnosis of joint involvement in malignant primitive tumors of the knee. METHODS: Ten-year period retrospective study of 42 patients...
November 2016: Bulletin du Cancer
https://www.readbyqxmd.com/read/27818975/effect-of-muscle-contractions-on-cartilage-morphological-and-functional-magnetic-resonance-imaging-evaluation-of-the-knee-after-spinal-cord-injury
#8
Marco Kawamura Demange, Camilo Partezani Helito, Paulo Victor Partezani Helito, Felipe Ferreira de Souza, Riccardo Gomes Gobbi, Alexandre Fogaça Cristante
OBJECTIVE: To evaluate the effect of complete absence of muscle contractions on normal human cartilage in the presence of joint motion. METHODS: Patients with complete acute spinal cord injuries were enrolled. All patients underwent magnetic resonance imaging (MRI) on both knees as soon as their medical condition was stable and at six months after the primary lesion. All patients received rehabilitation treatment that included lower-limb passive motion exercises twice a day...
September 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/27800039/a-prospective-comparative-study-of-high-resolution-ultrasound-and-mri-in-the-diagnosis-of-rotator-cuff-tears-in-a-tertiary-hospital-of-north-india
#9
Narvir Singh Chauhan, Ajay Ahluwalia, Yash Paul Sharma, Lokesh Thakur
BACKGROUND: To evaluate the accuracy of high resolution ultrasound (USG) and MRI in the diagnosis of rotator cuff tears (RCT) and to determine if high resolution USG compares favorably in sensitivity and specificity to MRI in the diagnosis of rotator cuff injury. MATERIAL/METHODS: In this prospective comparative study, 40 patients with clinically suspected rotator cuff tears underwent both ultrasound and MRI of the shoulder. Out of these 40 patients, 31 patients who had positive findings for rotator cuff tears on ultrasound and/or MRI were finally included in the study while the remaining 9 patients with negative or unrelated findings were excluded...
2016: Polish Journal of Radiology
https://www.readbyqxmd.com/read/27799571/evaluation-of-sacroiliac-joint-mri-for-pelvic-venous-congestion-signs-in-women-clinically-suspected-of-sacroiliitis
#10
Canan Cimsit, Tevfik Yoldemir, Derya Tureli, Mustafa Erkin Aribal
BACKGROUND: Pelvic congestion syndrome (PCS) is a commonly overlooked condition which is a potential cause of chronic pelvic pain. Magnetic resonance imaging (MRI) of the sacroiliac joint (SIJ) may demonstrate unexpected conditions that can mimic sacroiliitis (SI). Awareness of MRI-defined pelvic venous congestion (PVC) may help in identifying PCS, where vascular abnormality may be the sole manifestation of SIJ pain. PURPOSE: To detect incidental MRI-defined PVC in patients who underwent SIJ-MRI for presumed SI and define the variance of its incidence...
October 31, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27796082/pet-mri-of-metabolic-activity-in-osteoarthritis-a-feasibility-study
#11
Feliks Kogan, Audrey P Fan, Emily J McWalter, Edwin H G Oei, Andrew Quon, Garry E Gold
PURPOSE: To evaluate positron emission tomography / magnetic resonance imaging (PET/MRI) knee imaging to detect and characterize osseous metabolic abnormalities and correlate PET radiotracer uptake with osseous abnormalities and cartilage degeneration observed on MRI. MATERIALS AND METHODS: Both knees of 22 subjects with knee pain or injury were scanned at one timepoint, without gadolinium, on a hybrid 3.0T PET-MRI system following injection of (18) F-fluoride or (18) F-fluorodeoxyglucose (FDG)...
October 31, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27792788/trem-1-hmgb1-and-rage-in-the-shoulder-tendon-dual-mechanisms-for-inflammation-based-on-the-coincidence-of-glenohumeral-arthritis
#12
Finosh G Thankam, Matthew F Dilisio, Nicholas E Dietz, Devendra K Agrawal
Rotator cuff injury (RCI) is a major musculoskeletal disorder in the adult population where inflammation and pain are major contributing factors. Coincidence of other clinical conditions like glenohumeral arthritis aggravates inflammation and delays the healing response. The mechanism and signaling factors underlying the sustenance of inflammation in the rotator cuff joint are largely unknown. The present article aims to elucidate the involvement of inflammatory molecule, TREM-1 (Triggering Receptors Expressed on Myeloid cells-1), and danger-associated molecular patterns (DAMPs), including high mobility group protein 1 (HMGB-1) and RAGE (receptor for advanced glycation end products), in the setting of RCI with respect to the severity of glenohumeral arthritis...
2016: PloS One
https://www.readbyqxmd.com/read/27791977/cutting-corners-or-a-new-standard-increasing-scarcity-of-t1-data-sets
#13
Todd D Greenberg, Richard Thompson, Stephen J Pomeranz
The technological innovation of magnetic resonance imaging (MRI) is ongoing and necessitates recurring reevaluation of appropriateness standards. As evidenced by current standards, T1 data sets provide an essential role to musculoskeletal imaging. According to a recent survey, T1 data sets are increasingly underutilized. This article discusses common and less commonly recognized T1 data set utility. It is suggested that a single non-fat-suppressed T1 data set (in any plane) continues to be standard in routine MRI musculoskeletal imaging...
2016: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/27778040/modern-american-scurvy-experience-with-vitamin-c-deficiency-at-a-large-children-s-hospital
#14
Farahnaz Golriz, Lane F Donnelly, Sridevi Devaraj, Raj Krishnamurthy
BACKGROUND: Until recently scurvy has been viewed in developed countries as a disease of the past. More recently there have been reports of case series of children with scurvy who have had a delayed diagnosis after an extensive diagnostic workup that included imaging. Most of these children have had underlying neurologic conditions such as autism. OBJECTIVE: To review the medical records of children diagnosed with vitamin C (ascorbic acid) deficiency based on serum ascorbic acid levels at a large pediatric health care system, to determine imaging findings and utility of imaging in management, and to identify at-risk pediatric populations...
October 24, 2016: Pediatric Radiology
https://www.readbyqxmd.com/read/27777821/development-of-a-protocol-for-spect-ct-in-the-assessment-of-wrist-disorders
#15
Aude Le Corre, Kym Phuong Huynh, Rasmeet Singh Dhaliwal, Gregory Ian Bain
Background Single-photon emission computed tomography and computed tomography (SPECT/CT) is a hybrid diagnostic imaging modality that allows clinicians to integrate their diagnostic evaluations and deliver a definitive diagnosis in musculoskeletal disorders. Specifically, in identification of osseous pathology, the conventional bone scan delivers greater specificity compared with magnetic resonance imaging (MRI). However, use of SPECT/CT enhances the sensitivity and specificity. Use of this modality denotes the possibility to specify the lesion more accurately and precisely while grading the activity according to osseous structural changes...
November 2016: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/27777815/the-prevalence-of-pisotriquetral-arthritis-in-the-setting-of-scapholunate-advanced-collapse
#16
Schneider K Rancy, Samir K Trehan, Angela E Li, Steve K Lee, Hollis G Potter, Scott W Wolfe
Background Previous authors have reported pisotriquetral pain and subsequent pisiform excision following partial or total wrist fusion in patients with scapholunate advanced collapse (SLAC). Prior studies have not considered the potential role of SLAC biomechanics on pisotriquetral osteoarthritis (PT OA) development preoperatively. Purpose To determine the prevalence and severity of PT OA in patients with SLAC as compared with a control population. Patients and Methods Magnetic resonance imaging (MRI) studies of 24 patients with SLAC wrist and 24 sex- and age-matched control patients were analyzed...
November 2016: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/27764978/the-prevalence-of-sacroiliitis-in-patients-with-acne-vulgaris-using-isotretinoin
#17
Leyla Baykal Selçuk, Deniz Aksu Arıca, Hanife Baykal Şahin, Savas Yaylı, Sevgi Bahadır
BACKGROUND/OBJECTIVE: Acne vulgaris is a chronic inflammatory disease affecting the pilosebaceous unit in the skin. Isotretinoin is a synthetic vitamin A derivative regarded as the most effective agent in the treatment of acne. There have recently been increasing reports of adverse effects of isotretinoin on the skeletal system. Our aim in this study was to evaluate the rheumatic side-effects triggered by this drug, and particularly the prevalence of sacroiliitis. MATERIALS AND METHODS: A total of 73 patients receiving isotretinoin due to moderate or severe acne vulgaris were included...
November 16, 2016: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/27757283/diagnostic-imaging-in-a-direct-access-sports-physical-therapy-clinic-a-2-year-retrospective-practice-analysis
#18
Michael S Crowell, Erik A Dedekam, Michael R Johnson, Scott C Dembowski, Richard B Westrick, Donald L Goss
BACKGROUND: While advanced diagnostic imaging is a large contributor to the growth in health care costs, direct-access to physical therapy is associated with decreased rates of diagnostic imaging. No study has systematically evaluated with evidence-based criteria the appropriateness of advanced diagnostic imaging, including magnetic resonance imaging (MRI), when ordered by physical therapists. The primary purpose of this study was to describe the appropriateness of magnetic resonance imaging (MRI) or magnetic resonance arthrogram (MRA) exams ordered by physical therapists in a direct-access sports physical therapy clinic...
October 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27755645/characterization-of-rotator-cuff-tears-ultrasound-versus-magnetic-resonance-imaging
#19
Kelechi R Okoroha, Nima Mehran, Jonathan Duncan, Travis Washington, Tyler Spiering, Michael J Bey, Marnix Van Holsbeeck, Vasilios Moutzouros
Ultrasound and magnetic resonance imaging (MRI) are both capable of diagnosing full-thickness rotator cuff tears. However, it is unknown which imaging modality is more accurate and precise in evaluating the characteristics of full-thickness rotator cuff tears in a surgical population. This study reviewed 114 patients who underwent arthroscopic repair of a full-thickness rotator cuff tear over a 1-year period. Of these patients, 61 had both preoperative MRI and ultrasound for review. Three musculoskeletal radiologists evaluated each ultrasound and MRI in a randomized and blinded fashion on 2 separate occasions...
October 18, 2016: Orthopedics
https://www.readbyqxmd.com/read/27755204/distinguishing-pseudomeningocele-epidural-hematoma-and-postoperative-infection-on-postoperative-mri
#20
Kris Radcliff, William B Morrison, Christopher Kepler, Jeffrey Moore, Gursukhman S Sidhu, David Gendelberg, Luciano Miller, Marcos A Sonagli, Alexander R Vaccaro
STUDY DESIGN: Retrospective case series. OBJECTIVE: To identify specific magnetic resonance imaging (MRI) characteristics of epidural fluid collections associated with infection, hematoma, or cerebrospinal fluid (CSF). SUMMARY OF BACKGROUND DATA: Interpretation of postoperative MRI can be challenging after lumbar fusion. The purpose of this study was to identify specific MRI characteristics of epidural fluid collections associated with infection, hematoma, or CSF...
November 2016: Clinical Spine Surgery
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