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Magnetic Resonance Imaging Clinics of North America

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https://www.readbyqxmd.com/read/28390538/hybrid-pet-mr-state-of-the-art-and-future-challenges
#1
EDITORIAL
Weili Lin, Sheng-Che Hung, Yueh Z Lee, Terence Z Wong
No abstract text is available yet for this article.
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390537/foreword
#2
EDITORIAL
Suresh K Mukherji
No abstract text is available yet for this article.
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390536/integration-of-pet-mr-hybrid-imaging-into-radiation-therapy-treatment
#3
REVIEW
Tong Zhu, Shiva Das, Terence Z Wong
Hybrid PET/MR imaging is in early development for treatment planning. This article briefly reviews research and clinical applications of PET/MR imaging in radiation oncology. With improvements in workflow, more specific tracers, and fast and robust acquisition protocols, PET/MR imaging will play an increasingly important role in better target delineation for treatment planning and have clear advantages in the evaluation of tumor response and in a better understanding of tumor heterogeneity. With advances in treatment delivery and the potential of integrating PET/MR imaging with research on radiomics for radiation oncology, quantitative and physiologic information could lead to more precise and personalized RT...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390535/pediatric-applications-of-hybrid-pet-mr-imaging
#4
REVIEW
Yueh Z Lee, Jorge D Oldan, Lynn A Fordham
Hybrid PET/MR imaging systems have recently become available for clinical practice. The simultaneous physiologic and anatomic imaging offers the potential to reduce radiation dose and other advantages for pediatric patients. Issues more unique to pediatric imaging, however, must also be addressed, including imaging time and disease sensitivity. Combined with newer tracers and a concerted multidisciplinary effort, the approach has the potential to substantially improve the imaging of a variety of pediatric diseases...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390534/pet-mr-imaging-of-multiple-myeloma
#5
REVIEW
Shetal N Shah, Jorge D Oldan
PET-magnetic resonance (MR) is a hybrid imaging modality that combines PET and MR. Evidence for this new modality is in the process of being developed, but both component modalities are well tested in the diagnosis and management of multiple myeloma. It allows advanced bimodality imaging of the whole body with an adaptable field of view and it can be used for monitoring plasma cell dyscrasias for progression to multiple myeloma, for assessing disease burden in patients with known multiple myeloma, for assessing response to therapy and relapse after remission, and for radiation therapy treatment planning...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390533/applications-of-pet-mr-imaging-in-urogynecologic-and-genitourinary-cancers
#6
REVIEW
Jorge D Oldan, Shetal N Shah, Tracy Lynn Rose
Positron emission tomograph (PET)-magnetic resonance (MR) is a new modality combining PET and MR. In gynecologic cancers it can be used for staging of cervical and endometrial cancer, planning of radiation therapy in cervical cancer, assessing response to chemotherapy in ovarian cancer, and detection of recurrence in most gynecologic cancers. It is being explored for prostate cancer and other genitourinary cancers, but is still in experimental stages.
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390532/cardiac-applications-of-pet-mr-imaging
#7
REVIEW
Jeffrey M C Lau, Richard Laforest, Felix Nensa, Jie Zheng, Robert J Gropler, Pamela K Woodard
Simultaneous acquisition PET/MR imaging combines the anatomic capabilities of cardiac MR imaging with quantitative capabilities of both PET and MR imaging. Cardiac PET/MR imaging has the potential not only to assess cardiac tumors but also to provide thorough assessment of myocardial ischemia, infarction, and function and specific characterization of cardiomyopathies, such as cardiac sarcoid. In this article, the authors start with a discussion of the technical challenges specific to cardiovascular PET/MR imaging followed by a discussion of the use of PET/MR imaging in various cardiovascular conditions...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390531/pet-mr-imaging-in-head-and-neck
#8
REVIEW
Yueh Z Lee, Joana Ramalho, Brice Kessler
Head and neck cancers are a diverse group of cancers with high morbidity and mortality within an area of complex anatomy. High-quality anatomic and functional imaging is essential for preoperative, chemotherapeutic, and radiotherapy planning. Early studies show that hybrid PET-MR imaging offers great potential for improving the imaging of head and neck cancers. Furthermore, advanced MR imaging techniques may also be incorporated to further enhance the diagnostic value of the combined modality.
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390530/neurologic-applications-of-pet-mr-imaging
#9
REVIEW
Michelle M Miller-Thomas, Tammie L S Benzinger
PET/MR imaging benefits neurologic clinical care and research by providing spatially and temporally matched anatomic MR imaging, advanced MR physiologic imaging, and metabolic PET imaging. MR imaging sequences and PET tracers can be modified to target physiology specific to a neurologic disease process, with applications in neurooncology, epilepsy, dementia, cerebrovascular disease, and psychiatric and neurologic research. Simultaneous PET/MR imaging provides efficient acquisition of multiple temporally matched datasets, and opportunities for motion correction and improved anatomic assignment of PET data...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390529/practical-considerations-for-clinical-pet-mr-imaging
#10
REVIEW
Samuel Galgano, Zachary Viets, Kathryn Fowler, Lael Gore, John V Thomas, Michelle McNamara, Jonathan McConathy
Clinical PET/MR imaging is currently performed at a number of centers around the world as part of routine standard of care. This article focuses on issues and considerations for a clinical PET/MR imaging program, focusing on routine standard-of-care studies. Although local factors influence how clinical PET/MR imaging is implemented, the approaches and considerations described here intend to apply to most clinical programs. PET/MR imaging provides many more options than PET/computed tomography with diagnostic advantages for certain clinical applications but with added complexity...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390528/improved-detection-of-small-pulmonary-nodules-through-simultaneous-mr-pet-imaging
#11
REVIEW
Fernando E Boada, Thomas Koesters, Kai Tobias Block, Hersh Chandarana
Magnetic resonance (MR)/PET scanners provide an imaging platform that enables simultaneous acquisition of MR and PET data in perfect spatial and temporal registration. This feature allows improving image quality for the MR and PET images obtained during the course of an examination. In this work the authors demonstrate the use of prospective MR-based motion tracking information for removing motion blur in MR/PET images of small pulmonary nodules. The theoretical basis for the algorithms is presented alongside clinical examples of its use...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390527/magnetic-resonance-derived-improvements-in-pet-imaging
#12
REVIEW
David S Lalush
Simultaneous PET-MR imaging improves deficiencies in PET images. The primary areas in which magnetic resonance (MR) has been applied to guide PET results are in correction for patient motion and in improving the effects of PET resolution and partial volume averaging. MR-guided motion correction of PET has been applied to respiratory, cardiac, and gross body movements and shown to improve lesion detectability and contrast. Partial volume correction or resolution improvement of PET governed by MR imaging anatomic information improves visualization of structures and quantitative accuracy...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390526/attenuation-correction-of-pet-mr-imaging
#13
REVIEW
Yasheng Chen, Hongyu An
PET/MR is a promising multimodality imaging approach. Attenuation is by far the largest correction required for quantitative PET imaging. MR-based attenuation correction have been extensively pursued, especially for brain imaging, in the past several years. In this article, we review atlas and direct imaging MR-based PET attenuation correction methods. The technical principles behind these methods are detailed and the advantages and disadvantages of these methods are discussed.
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28390525/principles-of-simultaneous-pet-mr-imaging
#14
REVIEW
Ciprian Catana
Combined PET/MR imaging scanners capable of acquiring simultaneously the complementary information provided by the 2 imaging modalities are now available for human use. After addressing the hardware challenges for integrating the 2 imaging modalities, most of the efforts in the field have focused on developing MR-based attenuation correction methods for neurologic and whole-body applications, implementing approaches for improving one modality by using the data provided by the other and exploring research and clinical applications that could benefit from the synergistic use of the multimodal data...
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888856/preface
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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