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Magnetic Resonance Imaging Clinics of North America

journal
https://read.qxmd.com/read/30466916/update-on-genitourinary-mr-imaging
#1
EDITORIAL
Ersan Altun
No abstract text is available yet for this article.
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466915/foreword
#2
EDITORIAL
Suresh K Mukherji
No abstract text is available yet for this article.
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466914/magnetic-resonance-imaging-of-the-perirenal-space-and-retroperitoneum
#3
REVIEW
Jorge Elias, Valdair Francisco Muglia
Retroperitoneal diseases are frequently a great clinical challenge because of their nonspecific presentation. Diseases may be asymptomatic with indolent biological behavior, and often show a large mass at initial imaging evaluation. Magnetic resonance (MR) imaging is a powerful diagnostic technique for assessment of detailed disease location and for characterization of tissue components and vascularization of lesions, with many advantages compared with computed tomography and ultrasonography. This article presents the MR imaging features of common retroperitoneal pathologic processes...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466913/infectious-and-inflammatory-diseases-of-the-urinary-tract-role-of-mr-imaging
#4
REVIEW
João Cruz, Filipa Figueiredo, António P Matos, Sérgio Duarte, Adalgisa Guerra, Miguel Ramalho
Urinary tract infection (UTI) is among the most common of bacterial infections. Imaging studies are only required in cases of complicated UTIs. Ultrasound remains the first-line imaging method; however, CT is the gold standard for evaluation of UTIs. MR imaging's improved contrast resolution and absence of ionizing radiation may recommend its use for assessment of lower UTIs. Furthermore, MR imaging performs with diagnostic accuracy at least similar to CT in complicated UTIs, except for the identification of calculi and emphysematous pyelonephritis...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466912/mr-imaging-evaluation-of-the-kidneys-in-patients-with-reduced-kidney-function-noncontrast-techniques-versus-contrast-enhanced-techniques
#5
REVIEW
Jaspreet K Bisla, Manojkumar Saranathan, Diego R Martin, Hina Arif-Tiwari, Bobby T Kalb
MR imaging has been optimized for the evaluation of a multitude of disease processes affecting the kidneys. A wide variety of noncontrast methods are available for the evaluation of both kidney structure and function, which are especially useful in clinical scenarios that obviate the use of intravenous contrast. Contrast-enhanced methods remain important, especially for tumor evaluation, and are used increasingly for functional analysis of quantitative biometrics, such as glomerular filtration rate and kidney blood flow...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466911/classification-and-diagnosis-of-cystic-renal-tumors-role-of-mr-imaging-versus-contrast-enhanced-ultrasound
#6
REVIEW
Hina Arif-Tiwari, Bobby T Kalb, Jaspreet K Bisla, Diego R Martin
Superior soft tissue and contrast resolution of MR imaging benefits sensitivity to kidney cyst features and classification, which may have an impact on patient management and outcomes. Contrast-enhanced ultrasound (CEUS) may have nearly similar sensitivity for detection of cyst features yet is dependent on patient body habitus and adequacy of visualization windows for the kidneys, which does not have the same impact on MR imaging results. Both MR imaging and CEUS may provide superior kidney cyst assessment compared with contrast-enhanced CT; however, further research is needed, particularly for the identification of role of CEUS...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466910/mr-imaging-of-the-testicular-and-extratesticular-tumors-when-do-we-need
#7
REVIEW
Mahan Mathur, Michael Spektor
Testicular ultrasound is typically the first-line imaging examination in evaluating scrotal pathology. However, MR imaging can often provide valuable additional information, especially when ultrasound and/or clinical examinations are inconclusive. This is particularly evident when encountering testicular or paratesticular lesions, where accurate localization and characterization are paramount for management and prognosis. After reviewing normal scrotal anatomy as seen on MR imaging and offering a sample imaging protocol, the article describes specific indications for scrotal MR imaging and highlights imaging findings unique to various benign and malignant causes...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466909/tumors-of-renal-collecting-systems-renal-pelvis-and-ureters-role-of-mr-imaging-and-mr-urography-versus-computed-tomography-urography
#8
REVIEW
Eric Zeikus, Giri Sura, Nicole Hindman, Julia R Fielding
Hematuria evaluation remains a common problem, particularly in patients who smoke and are at risk for urothelial tumors. Lifetime surveillance of the urothelium is often required once urothelial cancer is diagnosed. Computed tomography urography (CTU) has exquisite sensitivity and specificity for identification of renal and urothelial lesions. The examination is well accepted by patients and physicians. Possible harms include radiation exposure and contrast-induced nephropathy. MR imaging is also an accurate test, but requires longer exam times, and may not demonstrate stones...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466908/mr-imaging-of-the-penis-and-urethra
#9
REVIEW
Ersan Altun
MR imaging has been increasingly used as a problem-solving adjunct after an initial ultrasound examination for a variety of penile disorders, and is the best cross-sectional imaging modality for the assessment of urethra and periurethral disease. Critical advantages of MR imaging for penile and urethra imaging include high soft tissue contrast resolution providing detailed anatomic evaluation, which is important for the demonstration and assessment of critical structures such as tunica albuginea or walls of the urethra, larger field of view for better evaluation of extent of disease, and demonstration of proteinaceous material and varying ages of the blood products...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466907/mr-imaging-guided-focal-therapies-of-prostate-cancer
#10
REVIEW
Melvy Sarah Mathew, Aytekin Oto
MR imaging-guided focal therapy is a viable treatment option for patients with localized prostate cancer. After the identification of a malignant focus in the prostate gland on multiparametric MR imaging, treatment can be directed in a precise fashion to the area of interest. The goal of focal therapy is to eradicate prostate cancer while minimizing complications that can affect quality of life. Currently, the most commonly used methods of focal treatment of prostate cancer are cryotherapy, high-intensity focused ultrasound, and laser ablation...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466906/future-perspectives-in-multiparametric-prostate-mr-imaging
#11
REVIEW
Aritrick Chatterjee, Aytekin Oto
Multiparametric MR imaging is being used for prostate cancer diagnosis. However, many cancers are missed and the performance needs to improve before it can be used for population-level screening. We can expect standardization of multiparametric MR imaging and increased use of quantitative multiparametric MR imaging, which will lead to more reproducible results and improved interpretation. The development and integration of new acquisition techniques and use of artificial intelligence for image interpretation can lead to implementation of new clinical MR methods...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466905/mr-imaging-of-the-urinary-bladder-added-value-of-pet-mr-imaging
#12
REVIEW
Ersan Altun
MR imaging has been increasingly getting attention for the evaluation of bladder cancer. Recent studies have been promising for the staging performance of MR imaging in the bladder cancer, although its specific role has not been established yet. Additionally, the use of hybrid imaging combining PET with MR imaging could have the potential to increase its accuracy, although more research studies are needed.
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30466904/radiomics-in-kidney-cancer-mr-imaging
#13
REVIEW
Alberto Diaz de Leon, Payal Kapur, Ivan Pedrosa
Renal tumors encompass a heterogeneous disease spectrum, which confounds patient management and treatment. Percutaneous biopsy is limited by an inability to sample every part of the tumor. Radiomics may provide detail beyond what can be achieved from human interpretation. Understanding what new technologies offer will allow radiologists to play a greater role in caring for patients with renal cell carcinoma. In this article, we review the use of radiomics in renal cell carcinoma, in both the pretreatment assessment of renal masses and posttreatment evaluation of renal cell carcinoma, with special emphasis on the use of multiparametric MR imaging datasets...
February 2019: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30316475/preface
#14
EDITORIAL
Roberto Côrtes Domingues, Flávia Martins Costa
No abstract text is available yet for this article.
November 2018: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30316474/foreword
#15
EDITORIAL
Suresh K Mukherji
No abstract text is available yet for this article.
November 2018: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30316473/mr-imaging-at-rio-2016-olympic-and-paralympic-games-report-of-experience-using-state-of-the-art-3-0-t-and-1-5-t-wide-bore-mr-imaging-scanners-in-high-performance-athletes
#16
REVIEW
Rômulo Domingues, Bruno Hassel, João Grangeiro Neto, Flávia Paiva Proença Lobo Lopes
A facility with ultimate imaging technology was established to provide diagnostic care for the athletes during the 2016 Olympic and Paralympic Games, two of the world's most prestigious sports events. The Imaging Center featured 3.0-T and 1.5-T wide-bore MRI scanners. High-end, wide-bore 3.0-T and 1.5-T MRI systems with dedicated coils provided high-quality imaging solutions, enabling diagnoses of even minor injuries with the utmost accuracy during the games. This article outlines the authors' experience using 3...
November 2018: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30316472/mr-imaging-of-fetal-musculoskeletal-disorders
#17
REVIEW
Heron Werner, Renata Nogueira, Flávia Paiva Proença Lobo Lopes
This article outlines the main findings in prenatal musculoskeletal disorders. Three main technologies are generally used to obtain images within the uterus during pregnancy: ultrasound (US), MR imaging, and computed tomography (CT). Currently, the primary imaging method used for fetal assessment during pregnancy is US because it is patient friendly, useful, cost-effective, and (considered) safe. MR imaging is generally performed when US yields equivocal results because it offers additional information about fetal abnormalities and conditions in situations in which US is unable to provide high-quality images...
November 2018: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30316471/magnetic-resonance-neurography-in-musculoskeletal-disorders
#18
REVIEW
Marcelo Bordalo-Rodrigues
Magnetic resonance neurography is defined by direct visualization of nerves with MR imaging. Technical advancements enabled high-resolution protocols, and clinical interest has increased. The author discusses basics of magnetic resonance neurography protocols and review clinical magnetic resonance neurography applications in the musculoskeletal system.
November 2018: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30316470/magnetic-resonance-imaging-in-rheumatology
#19
REVIEW
Robert G W Lambert, Mikkel Østergaard, Jacob L Jaremko
Magnetic resonance (MR) imaging has traditionally only played a small role in the clinical care of most patients with arthritis. However, with modern therapeutic strategies, early diagnosis is now more important than ever before. Consequently, advanced MRI techniques and applications now play a crucial role in managing an increasing proportion of rheumatology patients. This article reviews MR imaging techniques that are in widespread use and in development for detection and quantification of inflammation and structural damage in arthritis...
November 2018: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/30316469/whole-body-magnetic-resonance-imaging-in-rheumatic-and-systemic-diseases-from-emerging-to-validated-indications
#20
REVIEW
Elie Barakat, Thomas Kirchgesner, Perrine Triqueneaux, Christine Galant, Maria Stoenoiu, Frederic E Lecouvet
Whole-body magnetic resonance (MR) imaging techniques and protocols have been evolving continuously for the last 20 years, resulting in a powerful and mature tool for the detection, staging, and treatment monitoring of many oncologic and musculoskeletal disorders. The unique contrast resolution of MR imaging makes this imaging modality highly sensitive to pathologic alterations in bones, muscles, entheses, joints, and soft tissues, enabling this method to be expanded to the whole musculoskeletal system. Whole-body MR imaging is now used in numerous rheumatic, bone, and muscle disorders, and a full range of developing applications for this method have been emerging...
November 2018: Magnetic Resonance Imaging Clinics of North America
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