Full Text Journal Articles by
Author Eric A Walker

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Ultrasound in Sports Injuries.

Cristy N French, Eric A Walker, Shawn F Phillips, Jayson R Loeffert,

Utilization of musculoskeletal ultrasound, in particular for sports medicine, has dramatically increased in recent years. Ultrasound is an important adjunct tool to physical examination and other imaging methods in the evaluation and management of the injured athlete. It offers unique advantages in specific clinical scenarios. Dedicated training and a standardized ... Read more >>

Clin Sports Med (Clinics in sports medicine)
[2021, 40(4):801-819]

Cited: 0 times

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How a Quantum Computer Could Quantify Uncertainty in Microkinetic Models.

Alejandro Becerra, Anand Prabhu, Mary Sharmila Rongali, Sri Charan Simha Velpur, Bert Debusschere, Eric A Walker,

A method of uncertainty quantification on a quantum circuit using three samples for the Rh(111)-catalyzed CO oxidation reaction is demonstrated. Three parametrized samples of a reduced, linearized microkinetic model populate a single block diagonal matrix for a quantum circuit. This approach leverages the logarithmic scaling of the number of qubits ... Read more >>

J Phys Chem Lett (The journal of physical chemistry letters)
[2021, 12(29):6955-6960]

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How a Quantum Computer Could Solve a Microkinetic Model.

Eric A Walker, Shreyas Addamane Pallathadka,

A CO oxidation microkinetic model is set up for a quantum circuit. The CO oxidation microkinetic model, and microkinetic models in general, exhibit an advantage of not requiring an encoding step because of being a subclass of systems of equations. The microkinetic model is cast as a nonlinear set of ... Read more >>

J Phys Chem Lett (The journal of physical chemistry letters)
[2021, 12(1):592-597]

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Graph Theory Model of Dry Reforming of Methane Using Rh(111).

Eric A Walker, Mohammad Moein Mohammadi, Mark T Swihart,

The adsorption energies of intermediates of the dry reforming of methane reaction (DRM CH4 + CO2 ⇔ 2CO + 2H2) using Rh(111) are approximated. Graph theory creates descriptors of the intermediates. The information recorded in these descriptors includes the elemental identities of each atom, its neighbors, and its next-nearest neighbors. ... Read more >>

J Phys Chem Lett (The journal of physical chemistry letters)
[2020, 11(12):4917-4922]

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ACR Appropriateness Criteria® Primary Bone Tumors.

, Joseph M Bestic, Daniel E Wessell, Francesca D Beaman, R Carter Cassidy, Gregory J Czuczman, Jennifer L Demertzis, Leon Lenchik, Kambiz Motamedi, Jennifer L Pierce, Akash Sharma, Andrew E Sloan, Khoi Than, Eric A Walker, Elizabeth Ying-Kou Yung, Mark J Kransdorf,

Although primary bone tumors are relatively uncommon, appropriate imaging evaluation is essential when they are suspected or incidentally detected. In almost all cases, radiographs are the most appropriate initial imaging study for screening and characterization of primary bone tumors. Radiographs often provide sufficient information for diagnosis and to guide the ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2020, 17(5S):S226-S238]

Cited: 0 times

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What Does the Machine Learn? Knowledge Representations of Chemical Reactivity.

Joshua A Kammeraad, Jack Goetz, Eric A Walker, Ambuj Tewari, Paul M Zimmerman,

In a departure from conventional chemical approaches, data-driven models of chemical reactions have recently been shown to be statistically successful using machine learning. These models, however, are largely black box in character and have not provided the kind of chemical insights that historically advanced the field of chemistry. To examine ... Read more >>

J Chem Inf Model (Journal of chemical information and modeling)
[2020, 60(3):1290-1301]

Cited: 1 time

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ACR Appropriateness Criteria® Suspected Osteomyelitis of the Foot in Patients With Diabetes Mellitus.

, Eric A Walker, Francesca D Beaman, Daniel E Wessell, R Carter Cassidy, Gregory J Czuczman, Jennifer L Demertzis, Leon Lenchik, Kambiz Motamedi, Jennifer L Pierce, Akash Sharma, Elizabeth Ying-Kou Yung, Mark J Kransdorf,

Diabetes-related foot complications such as soft-tissue infection, osteomyelitis, and neuropathic osteoarthropathy account for up to 20% of all diabetic-related North American hospital admissions. Radiography of the foot is usually appropriate as the initial screening examination in diabetic patients with suspected osteomyelitis of the foot. For follow-up examination, MRI of the ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2019, 16(11S):S440-S450]

Cited: 1 time

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Radiologic Update on Arthroplasties in the Wrist and Hand.

Jonelle M Petscavage-Thomas, Cristy Gustas-French, Eric A Walker,

Arthritis involving the hand and wrist can significantly impair functions of daily living. Although arthrodesis provides pain relief, it limits range of motion at the affected joint. Arthroplasty is an alternative surgical treatment for hand and wrist arthritis, providing both pain relief and restoration of a range of motion. Over ... Read more >>

Semin Musculoskelet Radiol (Seminars in musculoskeletal radiology)
[2019, 23(2):151-161]

Cited: 0 times

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ACR Appropriateness Criteria® Acute Hand and Wrist Trauma.

, Maha Torabi, Leon Lenchik, Francesca D Beaman, Daniel E Wessell, Jennifer K Bussell, R Carter Cassidy, Gregory J Czuczman, Jennifer L Demertzis, Bharti Khurana, Alan Klitzke, Kambiz Motamedi, Jennifer L Pierce, Akash Sharma, Eric A Walker, Mark J Kransdorf,

Hand and wrist injuries are common reasons for musculoskeletal-related emergency department visits. Imaging is essential for evaluating many of these injuries. In most cases, conventional radiographs provide sufficient information to guide the treating clinician. This review focuses on seven common variants to guide diagnosis of hand and wrist injuries. In ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2019, 16(5S):S7-S17]

Cited: 2 times

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ACR Appropriateness Criteria® Shoulder Pain-Traumatic.

, Behrang Amini, Nicholas M Beckmann, Francesca D Beaman, Daniel E Wessell, Stephanie A Bernard, R Carter Cassidy, Gregory J Czuczman, Jennifer L Demertzis, Bennett S Greenspan, Bharti Khurana, Kenneth S Lee, Leon Lenchik, Kambiz Motamedi, Akash Sharma, Eric A Walker, Mark J Kransdorf,

Traumatic shoulder pain is pain directly attributed to a traumatic event, either acute or chronic. This pain may be the result of either fracture (the clavicle, scapula, or proximal humerus) or soft-tissue injury (most commonly of the rotator cuff, acromioclavicular ligaments, or labroligamentous complex). Imaging assessment of traumatic shoulder pain ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2018, 15(5S):S171-S188]

Cited: 3 times

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Non-union rate of type II and III odontoid fractures in CPPD versus a control population.

Aaron Wold, Jonelle Petscavage-Thomas, Eric A Walker,

<h4>Objective</h4>The objective was to determine if there is a significant difference between rates of non-union of type II and III odontoid fractures in patients with calcium pyrophosphate dihydrate deposition (CPPD) compared with a control population.<h4>Materials and methods</h4>A 10-year retrospective picture archive and communications system review was performed of 31 CPPD ... Read more >>

Skeletal Radiol (Skeletal radiology)
[2018, 47(11):1499-1504]

Cited: 1 time

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ACR Appropriateness Criteria® Soft-Tissue Masses.

, Mark J Kransdorf, Mark D Murphey, Daniel E Wessell, R Carter Cassidy, Gregory J Czuczman, Jennifer L Demertzis, Leon Lenchik, Kambiz Motamedi, Jennifer L Pierce, Akash Sharma, Eric A Walker, Elizabeth Ying-Kou Yung, Francesca D Beaman,

Imaging is an integral component of the evaluation of patients with a suspected soft-tissue mass. Imaging can not only confirm the presence of a mass but can provide essential information necessary for diagnosis, local staging, and biopsy planning. Although the objectives of the evaluation have not changed, the choices available ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2018, 15(5S):S189-S197]

Cited: 4 times

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ACR Appropriateness Criteria® Suspected Osteomyelitis, Septic Arthritis, or Soft Tissue Infection (Excluding Spine and Diabetic Foot).

, Francesca D Beaman, Paul F von Herrmann, Mark J Kransdorf, Ronald S Adler, Behrang Amini, Marc Appel, Erin Arnold, Stephanie A Bernard, Bennett S Greenspan, Kenneth S Lee, Michael J Tuite, Eric A Walker, Robert J Ward, Daniel E Wessell, Barbara N Weissman,

Infection of the musculoskeletal system is a common clinical problem. Differentiating soft tissue from osseous infection often determines the appropriate clinical therapeutic course. Radiographs are the recommend initial imaging examination, and although often not diagnostic in acute osteomyelitis, can provide anatomic evaluation and alternative diagnoses influencing subsequent imaging selection and ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2017, 14(5S):S326-S337]

Cited: 7 times

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ACR Appropriateness Criteria® Chronic Back Pain Suspected Sacroiliitis-Spondyloarthropathy.

, Stephanie A Bernard, Mark J Kransdorf, Francesca D Beaman, Ronald S Adler, Behrang Amini, Marc Appel, Erin Arnold, R Carter Cassidy, Bennett S Greenspan, Kenneth S Lee, Michael J Tuite, Eric A Walker, Robert J Ward, Daniel E Wessell, Barbara N Weissman,

Inflammatory sacroiliitis or the seronegative axial spondyloarthropathies often presents as back pain or sacroiliac joint pain of more than 3-month duration with inflammatory symptoms and typically in patients younger than 45 years of age. Imaging plays an important role in diagnosis and disease monitoring. This article addresses the appropriate sequence ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2017, 14(5S):S62-S70]

Cited: 2 times

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Quality metrics currently used in academic radiology departments: results of the QUALMET survey.

Eric A Walker, Jonelle M Petscavage-Thomas, Joseph S Fotos, Michael A Bruno,

<h4>Objective</h4>We present the results of the 2015 quality metrics (QUALMET) survey, which was designed to assess the commonalities and variability of selected quality and productivity metrics currently employed by a large sample of academic radiology departments representing all regions in the USA.<h4>Methods</h4>The survey of key radiology metrics was distributed in ... Read more >>

Br J Radiol (The British journal of radiology)
[2017, 90(1071):20160827]

Cited: 3 times

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ACR Appropriateness Criteria Follow-Up of Malignant or Aggressive Musculoskeletal Tumors.

Catherine C Roberts, Mark J Kransdorf, Francesca D Beaman, Ronald S Adler, Behrang Amini, Marc Appel, Stephanie A Bernard, Ian Blair Fries, Isabelle M Germano, Bennett S Greenspan, Langston T Holly, Charlotte D Kubicky, Simon Shek-Man Lo, Timothy J Mosher, Andrew E Sloan, Michael J Tuite, Eric A Walker, Robert J Ward, Daniel E Wessell, Barbara N Weissman,

Appropriate imaging modalities for the follow-up of malignant or aggressive musculoskeletal tumors include radiography, MRI, CT, (18)F-2-fluoro-2-deoxy-D-glucose PET/CT, (99m)Tc bone scan, and ultrasound. Clinical scenarios reviewed include evaluation for metastatic disease to the lung in low- and high-risk patients, for osseous metastatic disease in asymptomatic and symptomatic patients, for local ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2016, 13(4):389-400]

Cited: 13 times

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Flag Football Finger Pop.

Erik Dedekam, Eric A Walker,

Mil Med (Military medicine)
[2016, 181(10):1172-1173]

Cited: 0 times

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Epitrochlear cat scratch disease: unique imaging features allowing differentiation from other soft tissue masses of the medial arm.

Stephanie A Bernard, Eric A Walker, John F Carroll, Mary Klassen-Fischer, Mark D Murphey,

<h4>Objective</h4>Evaluate anatomic and imaging features of epitrochlear regional adenopathy secondary to cat scratch disease (CSD) to assist differentiation of CSD from other soft tissue masses at the elbow.<h4>Materials and methods</h4>Retrospective review of 24 confirmed cases of CSD. Patient demographics, clinical presentation and radiographic (R; n = 10), CT (n = 3), ultrasound (US; n = 5), ... Read more >>

Skeletal Radiol (Skeletal radiology)
[2016, 45(9):1227-1234]

Cited: 1 time

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ACR Appropriateness Criteria Acute Trauma to the Knee.

Michael J Tuite, Mark J Kransdorf, Francesca D Beaman, Ronald S Adler, Behrang Amini, Marc Appel, Stephanie A Bernard, Molly E Dempsey, Ian Blair Fries, Bennett S Greenspan, Bharti Khurana, Timothy J Mosher, Eric A Walker, Robert J Ward, Daniel E Wessell, Barbara N Weissman,

More than 500,000 visits to the emergency room occur annually in the United States, for acute knee trauma. Many of these are twisting injuries in young patients who can walk and bear weight, and emergent radiographs are not required. Several clinical decision rules have been devised that can considerably reduce ... Read more >>

J Am Coll Radiol (Journal of the American College of Radiology : JACR)
[2015, 12(11):1164-1172]

Cited: 10 times

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Understanding and Confronting Our Mistakes: The Epidemiology of Error in Radiology and Strategies for Error Reduction.

Michael A Bruno, Eric A Walker, Hani H Abujudeh,

Arriving at a medical diagnosis is a highly complex process that is extremely error prone. Missed or delayed diagnoses often lead to patient harm and missed opportunities for treatment. Since medical imaging is a major contributor to the overall diagnostic process, it is also a major potential source of diagnostic ... Read more >>

Radiographics (Radiographics : a review publication of the Radiological Society of North America, Inc)
[2015, 35(6):1668-1676]

Cited: 76 times

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Unlocking the jaw: advanced imaging of the temporomandibular joint.

Jonelle M Petscavage-Thomas, Eric A Walker,

<h4>Objective</h4>Temporomandibular joint (TMJ) dysfunction is a common condition, affecting up to 28% of the population. The TMJ can be affected by abnormal dynamics of the disk-condyle complex, degenerative arthritis, inflammatory arthritis, and crystal arthropathy. Less commonly, neoplasms and abnormal morphologic features of the condyle are causes of TMJ symptoms. Cross-sectional ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2014, 203(5):1047-1058]

Cited: 7 times

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Imaging findings of adiposis dolorosa vs. massive localized lymphedema.

Jonelle M Petscavage-Thomas, Eric A Walker, Stephanie A Bernard, Jennifer Bennett,

<h4>Purpose</h4>Adiposis dolorosa (Dercum's disease) is a condition of benign, painful subcutaneous lipomatous lesions associated with weakness, endocrine and lipid abnormalities, and mental disturbances. There is little information documenting the cross-sectional imaging findings that differentiate it from lipomatous and neoplastic soft tissue masses, or massive localized lymphedema. The purpose of this ... Read more >>

Skeletal Radiol (Skeletal radiology)
[2015, 44(6):839-847]

Cited: 7 times

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Soft-tissue myxomatous lesions: review of salient imaging features with pathologic comparison.

Jonelle M Petscavage-Thomas, Eric A Walker, Chika I Logie, Loren E Clarke, Dennis M Duryea, Mark D Murphey,

Myxoid soft-tissue lesions are a heterogeneous group of benign and malignant mesenchymal tumors with an abundance of extracellular mucoid material. These lesions may mimic cysts on radiologic evaluation because of the high water content, and histopathologic features also overlap. Benign myxoid lesions include intramuscular myxoma, synovial cyst, bursa, ganglion, and ... Read more >>

Radiographics (Radiographics : a review publication of the Radiological Society of North America, Inc)
[2014, 34(4):964-980]

Cited: 27 times

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Ovipositor morphology of cosmetid harvestmen (Arachnida, Opiliones, Laniatores): a new source of informative characters.

Eric A Walker, Victor R Townsend,

The external morphology of the penis is an important source of systematic characters in phylogenetic studies of harvestmen. Modern taxonomic studies generally include micrographs generated by scanning electron microscopy (SEM) to illustrate penis morphology. In contrast, the external morphology of the ovipositor has largely been ignored for harvestmen belonging to ... Read more >>

J Morphol (Journal of morphology)
[2014, 275(12):1376-1385]

Cited: 1 time

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Chondrosarcoma: A Diagnostic Imager's Guide to Decision Making and Patient Management.

Chika I Logie, Eric A Walker, Jonathan A Forsberg, Benjamin K Potter, Mark D Murphey,

Chondrosarcoma is the third most common primary malignant bone tumor. Currently, outcomes are based largely on a histologic grading scale described by the World Health Organization (WHO) Classification of Bone Tumors (2002). This classification scheme possesses evident utility in the evaluation and management of higher grade tumors, but it is ... Read more >>

Semin Musculoskelet Radiol (Seminars in musculoskeletal radiology)
[2013, 17(2):101-115]

Cited: 14 times

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