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Magnetic Resonance Imaging Clinics of North America

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https://www.readbyqxmd.com/read/27888856/preface
#1
EDITORIAL
Mary G Hochman
No abstract text is available yet for this article.
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888855/foreword
#2
EDITORIAL
Lynne S Steinbach
No abstract text is available yet for this article.
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888854/mr-imaging-of-the-midfoot-including-chopart-and-lisfranc-joint-complexes
#3
REVIEW
Monica Tafur, Zehava Sadka Rosenberg, Jenny T Bencardino
Following a brief description of the normal anatomy and biomechanics of the midfoot, this article focuses on MR imaging features of common osseous, tendon, and ligament abnormalities that affect the midfoot. Discussion of the anatomy and pathology affecting the Chopart and Lisfranc joint complexes, both of which play important roles in linking the midfoot to the hindfoot and the forefoot respectively, is also included.
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888853/mr-imaging-findings-in-heel-pain
#4
REVIEW
Ching-Di Chang, Jim S Wu
Heel pain is common and due to a variety of osseous and soft tissue disorders. Causes of heel pain can be classified by the anatomic structure in which they arise and include disorders of the (1) Achilles tendon, (2) plantar fascia, (3) calcaneus, (4) bursae, (5) nerves in the hindfoot, (6) and heel pad. Although careful history taking and physical examination are important, imaging plays a vital role in the diagnosis and management of heel pain. MR imaging is the best imaging test to assess pain in the heel...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888852/medial-sided-ankle-pain-deltoid-ligament-and-beyond
#5
REVIEW
Julia Crim
Abnormalities of the medial ligaments and posterior tibial tendon can occur because of acute injury or chronic instability or malalignment. Medial ankle injuries may occur because of pronation or supination-external rotation injuries. Deltoid ligament injuries have a significant impact on lateral ankle instability but can be overlooked in patients with lateral ligament injuries. Posterior tibial tendon dysfunction is usually associated with spring ligament or flexor retinaculum injury. Tarsal tunnel syndrome, accessory flexor muscles, and subtalar coalition should be considered as well as ligament and tendon tears in differential diagnosis of chronic medial ankle pain...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888851/aftermath-of-ankle-inversion-injuries-spectrum-of-mr-imaging-findings
#6
REVIEW
Timothy M Meehan, Edgar Leonardo Martinez-Salazar, Martin Torriani
Acute and chronic ankle inversion injuries are a common source of pain and a diagnostic challenge. Several studies have shown a variety of injury patterns after inversion injury both in acute and chronic settings. Although traditional assessment with clinical examination and radiographs is generally accepted for inversion injuries, MR imaging is a useful tool to detect occult injuries and in patients with chronic symptoms. This article examines a range of MR imaging findings that may be present in patients with lateral ankle pain following an acute or chronic inversion injury...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888850/mr-imaging-of-the-pediatric-foot-and-ankle-what-does-normal-look-like
#7
REVIEW
Grace Mang Yuet Ma, Kirsten Ecklund
MR imaging is ideally suited for characterization of the soft tissue, cartilaginous, and osseous structures of the pediatric ankle. An understanding of the normal MR imaging appearance associated with the dynamic skeletal maturation process will prevent overdiagnosis and unnecessary treatment. In this article, we review the normal MR imaging appearance of the growing ankle as well as several disease processes unique to the pediatric population.
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888849/new-techniques-in-mr-imaging-of-the-ankle-and-foot
#8
REVIEW
Won C Bae, Thumanoon Ruangchaijatuporn, Christine B Chung
Foot and ankle disorders are common in everyday clinical practice. MR imaging is frequently required for diagnosis given the variety and complexity of foot and ankle anatomy. Although conventional MR imaging plays a significant role in diagnosis, contemporary management increasingly relies on advanced imaging for monitoring therapeutic response. There is an expanding need for identification of biomarkers for musculoskeletal tissues. Advanced imaging techniques capable of imaging these tissue substrates will be increasingly used in routine clinical practice...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888848/postoperative-foot-and-ankle-mr-imaging
#9
REVIEW
Samuel D Madoff, Jeffrey Kaye, Joel S Newman
MR imaging has an important role in the evaluation of the postoperative foot and ankle. In this article, a variety of operative techniques and postoperative findings in the foot and ankle are described, including tendon and ligament reconstruction, as well as the treatment of tarsal coalition and Morton neuroma. The role of MR imaging in the assessment of complications of foot and ankle surgery is also detailed.
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888847/mr-imaging-of-the-diabetic-foot
#10
REVIEW
Eoghan McCarthy, William B Morrison, Adam C Zoga
Abnormalities of the peripheral nervous, vascular, and immune systems contribute to the development of numerous foot and ankle pathologies in the diabetic population. Although radiographs remain the most practical first-line imaging tool, magnetic resonance (MR) is the tertiary imaging modality of choice, allowing for optimal assessment of bone and soft tissue abnormalities. MR allows for the accurate distinction between osteomyelitis/septic arthritis and neuropathic osteoarthropathy. Furthermore, it provides an excellent presurgical anatomic road map of involved tissues and devitalized skin to ensure successful limited amputations when required...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888846/mr-imaging-of-common-soft-tissue-masses-in-the-foot-and-ankle
#11
REVIEW
Mary G Hochman, Jim S Wu
Soft tissue masses may be encountered in the foot and ankle and may represent true neoplasms, malignant or benign, or other, nonneoplastic entities that mimic musculoskeletal tumors. This article reviews common soft tissue masses encountered in the foot or ankle, highlights their MR imaging appearance, and outlines common pitfalls. Technical considerations for imaging soft tissue masses in the foot and ankle are discussed. On MR imaging, T1-weighted and T2-weighted signal intensity, contrast enhancement characteristics, and lesion location, together with patient demographics, history and physical examination, and findings on radiographs, can be useful in characterizing masses in the foot and ankle...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888845/mr-imaging-of-impingement-and-entrapment-syndromes-of-the-foot-and-ankle
#12
REVIEW
Edward Sellon, Philip Robinson
Impingement is a clinical syndrome of chronic pain and restricted range of movement caused by compression of abnormal bone or soft tissue within the ankle joint. It usually occurs following a sprain injury or repetitive microtrauma causing haemorrhage, synovial hyperplasia, and abnormal soft tissue interposition within the joint. MR imaging is particularly valuable in being able to detect not only the soft tissue and osseous abnormalities involved in these syndromes, but also a wide variety of other potential causes of ankle pain and instability that also may need to be addressed clinically...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888844/mr-imaging-of-the-plantar-plate-normal-anatomy-turf-toe-and-other-injuries
#13
REVIEW
Caio Nery, Daniel Baumfeld, Hilary Umans, André F Yamada
The metatarsophalangeal (MTP) joint complex is a weight-bearing structure important to the biomechanics of the standing position, walking, shoe wearing, and sport participation. Acute dorsiflexion injury of the first MTP joint, "turf toe," is common among American football and soccer players. The first and lesser MTP joint complexes can be affected by degenerative or inflammatory arthritis, infarct, and infection. These conditions can lead to plantar plate disruption. Imaging studies help physicians to properly diagnose and treat this condition...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888843/normal-variants-accessory-muscles-about-the-ankle
#14
REVIEW
Yvonne Cheung
Accessory muscles around the ankle are commonly encountered as incidental findings on cross-sectional imaging. Mostly asymptomatic, accessory muscles sometimes mimic mass lesions. They have been implicated as the cause of tarsal tunnel syndrome, impingement of surrounding structures, and chronic pain. Distinguishing these muscles can be challenging, because some travel along a similar path. This article describes these accessory muscles in detail, including their relationships to the aponeurosis of the lower leg...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888842/technical-considerations-best-practices-for-mr-imaging-of-the-foot-and-ankle
#15
REVIEW
Carolyn M Sofka
There are many challenges involved in obtaining diagnostic MR images of the foot and ankle. The complex anatomy and morphology, with curved and angular structures localized to the periphery of the body, make for an inherent challenge, let alone if an added level of complexity, such as orthopedic instrumentation, is added. This review outlines the technical considerations best designed to produce diagnostic images of the foot and ankle, with an emphasis on the postoperative state, including imaging in the presence of metal...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27742120/new-state-of-the-art-and-cutting-edge-advances-in-brain-tumor-imaging
#16
Rivka R Colen
No abstract text is available yet for this article.
November 2016: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27742119/foreword
#17
Suresh K Mukherji
No abstract text is available yet for this article.
November 2016: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27742118/pediatric-cerebellar-tumors-emerging-imaging-techniques-and-advances-in-understanding-of-genetic-features
#18
Asim F Choudhri, Adeel Siddiqui, Paul Klimo
Cerebellar tumors are the most common group of solid tumors in children. MR imaging provides an important role in characterization of these lesions, surgical planning, and postsurgical surveillance. Preoperative imaging can help predict the histologic subtype of tumors, which can provide guidance for surgical planning. Beyond histology, pediatric brain tumors are undergoing new classification schemes based on genetic features. Intraoperative MR imaging has emerged as an important tool in the surgical management of pediatric brain tumors...
November 2016: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27742117/adult-brain-tumors-clinical-applications-of-magnetic-resonance-spectroscopy
#19
Lara A Brandão, Mauricio Castillo
Proton magnetic resonance spectroscopy (H-MRS) may be helpful in suggesting tumor histology and tumor grade and may better define tumor extension and the ideal site for biopsy compared with conventional magnetic resonance (MR) imaging. A multifunctional approach with diffusion-weighted imaging, perfusion-weighted imaging, and permeability maps, along with H-MRS, may enhance the accuracy of the diagnosis and characterization of brain tumors and estimation of therapeutic response. Integration of advanced imaging techniques with conventional MR imaging and the clinical history help to improve the accuracy, sensitivity, and specificity in differentiating tumors and nonneoplastic lesions...
November 2016: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27742116/perfusion-imaging-in-neuro-oncology-basic-techniques-and-clinical-applications
#20
Brent Griffith, Rajan Jain
Perfusion imaging is a method for assessing the flow of blood occurring at the tissue level and can be accomplished by both CT and MR perfusion techniques. The use of perfusion imaging has increased substantially in the past decade, particularly in neuro-oncologic imaging, where it is has been used for brain tumor grading and directing biopsies or targeted therapy, as well as for the evaluation of treatment response and disease progression. This article discusses the basic principles and techniques of perfusion imaging, as well as its applications in neuro-oncology...
November 2016: Magnetic Resonance Imaging Clinics of North America
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