A5079151676- Orthopedic Surgery and Rehabilitation
- Foot and Ankle Surgery
- Tendon Structure and Treatment
- Peripheral Nerve Disorders
- Diabetic Foot Ulcer Assessment and Management
- Musculoskeletal synovial abnormalities and treatments
- Sports injuries and prevention
- Radiology practices and education
- Biomedical Text Mining and Ontologies
- Topic Modeling
- Lower Extremity Biomechanics and Pathologies
- Elbow and Forearm Trauma Treatment
- Sarcoma Diagnosis and Treatment
- Behavioral and Psychological Studies
- Autism Spectrum Disorder Research
- Nerve Injury and Rehabilitation
- COVID-19 diagnosis using AI
- Radiomics and Machine Learning in Medical Imaging
- Shoulder Injury and Treatment
- Bone Tumor Diagnosis and Treatments
- Natural Language Processing Techniques
- Advanced MRI Techniques and Applications
- Ultrasound in Clinical Applications
- Radiation Dose and Imaging
- Pressure Ulcer Prevention and Management
Dartmouth–Hitchcock Medical Center
2012-2024
Dartmouth College
2003-2024
Newton Wellesley Hospital
2023
London Borough of Hackney
2019
St. Cloud State University
2016
Mount Auburn Hospital
2015
Prince of Wales Hospital
2013
Hamilton County Coroner
2003
Harvard University
2001-2003
Beth Israel Deaconess Medical Center
2001
Computed tomography (CT) and magnetic resonance (MR) imaging were performed in 32 cases of clinically suspected chronic tears the posterior tibial tendon. Surgery was 22 patients (69%). Each case classified radiographically surgically as normal or a type 1, 2, 3 rupture. The sensitivity specificity CT 90% 100%, respectively, while those MR 95% 100%. accuracy detecting ruptures 91% for 96% imaging. overall accuracy, which reflected percentage correctly diagnosed well classified, 59% 73%...
To determine whether the Osgood-Schlatter lesion (OS) is produced by avulsion fracture or injury to patellar tendon, all images obtained in 28 cases of OS 20 patients (16 scintigrams, 34 computed tomographic [CT] scans, and 27 magnetic resonance [MR] images) were retrospectively analyzed. In 21 cases, imaging was performed before after treatment; relief from pain complete at time repeat examination. (100%), abnormal size decreased attenuation, increase signal intensity compatible with CT MR...
Ankle Ligaments on MRI: Appearance of Normal and Injured LigamentsKiley D. Perrich1, Douglas W. Goodwin1, Paul J. Hecht2 Yvonne Cheung1Audio Available | Share Claim CME
Our objective is to describe the characteristic MR imaging features of longitudinal tears peroneus brevis tendon and pathologic conditions normal variants that are associated with these which may require surgical intervention at time primary repair.We retrospectively reviewed 10 images asymptomatic volunteers 31 27 patients evidence splits tendon. Seven cases were surgically proven. In addition, we assessed five variants: lateral collateral ligamentous tears; injuries superior peroneal...
PURPOSE: To determine the prevalence of peroneus quartus (PQ) muscle, to demonstrate morphology this accessory muscle on magnetic resonance (MR) images, and reassess reported association PQ with a hypertrophic peroneal tubercle. MATERIALS AND METHODS: A retrospective review was performed 136 consecutive ankle MR imaging studies. The origins, insertions, variations in size dimensions tubercle retrotrochlear eminence were recorded. RESULTS: 10% (14 cases). tendon unit descended medial...
To describe the pseudodefect of distal humerus at junction capitellum and lateral epicondyle, which may simulate an osteochondral lesion on axial coronal magnetic resonance (MR) images.MR imaging studies elbow in 32 patients 22 asymptomatic volunteers were retrospectively reviewed. Thirty-two human humeri also examined for normal anatomy humerus.Twenty-two clinical MR examinations 14 revealed presence pseudodefect. A groove overhanging edges account appearance this pseudolesion.Familiarity...
At our institution, a standardized protocol using magnetic resonance imaging (MRI) to evaluate ankle stability and need for surgery following positive manual stress test isolated lateral malleolus fractures has been used. The purpose of this study was the results protocol.Retrospective review.University teaching hospital.: Twenty-one patients who had (>or=5 mm clear space widening) after Weber B fracture were further evaluated by MRI determine status deep deltoid ligament.If showed ligament...
Radiologic assessment of tendon injuries requires familiarity with normal anatomy and the capabilities available imaging modalities. Tenography, less commonly used nowadays, does not allow direct visualization tendons, so that partial ruptures longitudinal splits may go undetected. Ultrasonography can depict tenosynovitis, tendinitis, complete rupture Achilles tendon, but other tendons are difficult to visualize this technique. Magnetic resonance (MR) is superior computed tomography (CT) in...
To determine the magnetic resonance (MR) imaging features that characterize tear of peroneus longus tendon at midfoot.Medical records and MR images in nine patients with a middle segment were retrospectively reviewed. All had undergone routine ankle imaging; three additional oblique coronal imaging. Surgical proof was available for patients.Partial present four patients, complete five. Partial tears characterized by heterogeneous signal intensity thickening tendon. Complete discontinuity...
Posterior intermalleolar ligament of the ankle: normal anatomy and MR imaging features.Z S Rosenberg, Y Cheung, J Beltran, Sheskier, M Leong JahssAudio Available | Share
Since the availability of magnetic resonance imaging (MRI), suspected diagnosis an accessory muscle lower extremity can now be confirmed without need for invasive procedures. The soleus, peroneus quartus, and flexor digitorum longus accessorius are anomalous muscles that diagnosed by MRI. These probably more common than once thought easily distinguished from other space occupying lesions occur around ankle. MRI these enables one to make a definitive biopsy. In those symptomatic patients,...
The authors retrospectively reviewed 15 magnetic resonance (MR) studies of elbows with radiographic evidence nerve disorders. These cases were selected from 55 MR the elbow in patients referred for various complaints. images 10 healthy volunteers also reviewed. Ulnar disorders seen 11 cases. Three had median disease, and one patient a pathologic condition radial nerve. following abnormalities detected: focal or diffuse thickening, increased signal intensity on T2-weighted images, course...
MR imaging of the elbow: normal variant and potential diagnostic pitfalls trochlear groove cubital tunnel.Z S Rosenberg, J Beltran, Y Cheung M BrokerAudio Available | Share
Patient management choices in ankle fractures remain controversial because of ambiguities assessing stability and lack information on the integrity all supporting ligaments. Our objective was to use MRI identify range ligament injuries associated with a problematic subset fracture: isolated fibular for which widened medial clear space is absent or minimal standard radiographs but evident stress images.In our retrospective study 19 patients, we have categorized injury found partial complete...
Thirty asymptomatic ankles were studied with high-resolution surface coil magnetic resonance (MR) imaging to identify normal structures. Several variants demonstrated, including (a) Cortical irregularity of the posterior tibiotalar joint (should not be mistaken for osteonecrosis) in 27 30 cases; (b) talofibular ligament irregular and frayed superior edge simulating a tear 13 (c) navicular insertion tibial tendon heterogeneous signal intensity 14 (d) deltoid inhomogeneity seven ten (e) fluid...
Quality improvement (QI) projects are an integral part of today's radiology practice, helping identify opportunities for improving outcomes by refining work processes. QI typically driven outcome measures, but the data can be difficult to interpret: The numbers tend fluctuate even before a process is altered, and after intervention takes place, it may more determine cause such vacillations. Control chart analysis helps project team variations that should targeted avoid tampering in processes...
Long wait times limit our ability to provide the right care at time and are commonly products of inefficient workflow. In 2013, demand for musculoskeletal (MSK) procedures increased beyond department's efficient timely service. We initiated a quality improvement (QI) project increase efficiency decrease patient stay. Our team included three MSK radiologists, one senior resident, technologist, administrative assistant/scheduler, lead technologist. adopted followed Lean Six Sigma DMAIC...
Computed tomography (CT) was performed in 42 patients with 49 clinically suspected tears of the posterior tibial tendon. Twenty-eight were subsequently surgically explored and repaired. Three patterns tendon abnormalities recognized on CT scans: type I-intact, hypertrophied, heterogeneous tendon; II-attenuated III-absence a portion Types I II correlated partial rupture seen during surgery, III complete findings accurate 96% who underwent surgery. In four cases (14%), scans, but extent injury...
MR imaging of dislocation the posterior tibial tendon.J Bencardino, Z S Rosenberg, J Beltran, M Broker, Y Cheung, L A Rosemberg, Schweitzer and W HamiltonAudio Available | Share