Imaging Techniques for the Evaluation of Glenohumeral Instability

2000 ◽  
Vol 28 (3) ◽  
pp. 414-434 ◽  
Author(s):  
Timothy G. Sanders ◽  
William B. Morrison ◽  
Mark D. Miller
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging Modality ◽  
Imaging Techniques ◽  
Conventional Radiography ◽  
Magnetic Resonance Arthrography ◽  
Resonance Imaging ◽  
Glenohumeral Instability ◽  
The Past

The ability to image lesions associated with glenohumeral instability has evolved significantly over the past 2 decades. In the past, several imaging techniques ranging from conventional radiography to computerized axial arthrography and, most recently, to magnetic resonance imaging have been used to depict various labral abnormalities. In most instances, conventional radiography remains the initial imaging study for evaluating the patient with persistent shoulder pain and instability. Recently, however, magnetic resonance arthrography has been firmly established as the imaging modality of choice for demonstrating specific soft tissue abnormalities associated with glenohumeral instability. This article will review the role of various imaging modalities including conventional radiography, conventional arthrography, computerized axial arthrography, magnetic resonance imaging, and magnetic resonance arthrography. Emphasis will be placed on the role of magnetic resonance arthrography as it pertains to the lesions associated with glenohumeral instability. A thorough discussion of the appearance of normal anatomic structures, anatomic variations that mimic abnormality, and the various lesions associated with glenohumeral instability will be provided.

scholarly journals Contemporary considerations for the use of cardiovascular magnetic resonance imaging during pregnancy

2019 ◽  
Vol 12 (4) ◽  
pp. 158-163 ◽  
Author(s):  
Robin Ducas ◽  
Elsie T Nguyen ◽  
Rachel M Wald
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cardiovascular Magnetic Resonance ◽  
Magnetic Resonance ◽  
Cardiovascular Magnetic Resonance Imaging ◽  
Imaging Modality ◽  
Imaging Techniques ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
In Pregnancy

Cardiovascular imaging during pregnancy is frequently used to help direct diagnosis and management for women with known or suspected cardiac disease. Although echocardiography is the most commonly used imaging modality in pregnancy, cardiovascular magnetic resonance imaging is an important and increasingly used tool, which can provide complementary, and oftentimes incremental, information regarding cardiovascular anatomy, ventricular function, and vascular flows. Advantages of cardiovascular magnetic resonance imaging over echocardiography and other imaging techniques include superior reproducibility, excellent cross-sectional evaluation of cardiac structures, high spatial resolution, and lack of ionizing radiation (a limitation of computed tomography and conventional catheter-based angiography). Cardiovascular magnetic resonance imaging in the absence of gadolinium-based contrast agents poses no known risk to the mother or fetus and its applications in pregnancy are expanding. Clinicians should be familiar with the role of cardiovascular magnetic resonance imaging in pregnancy to optimize and enhance care for mothers with heart disease.

scholarly journals Tracking Transplanted Stem Cells Using Magnetic Resonance Imaging and the Nanoparticle Labeling Method in Urology

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Jae Heon Kim ◽  
Hong J. Lee ◽  
Yun Seob Song
Keyword(s):  
Magnetic Resonance Imaging ◽  
Stem Cells ◽  
Molecular Imaging ◽  
Magnetic Resonance ◽  
Imaging Modality ◽  
Imaging Techniques ◽  
Image Resolution ◽  
Imaging Method ◽  
Resonance Imaging

A reliablein vivoimaging method to localize transplanted cells and monitor their viability would enable a systematic investigation of cell therapy. Most stem cell transplantation studies have used immunohistological staining, which does not provide information about the migration of transplanted cellsin vivoin the same host. Molecular imaging visualizes targeted cells in a living host, which enables determining the biological processes occurring in transplanted stem cells. Molecular imaging with labeled nanoparticles provides the opportunity to monitor transplanted cells noninvasively without sacrifice and to repeatedly evaluate them. Among several molecular imaging techniques, magnetic resonance imaging (MRI) provides high resolution and sensitivity of transplanted cells. MRI is a powerful noninvasive imaging modality with excellent image resolution for studying cellular dynamics. Several types of nanoparticles including superparamagnetic iron oxide nanoparticles and magnetic nanoparticles have been used to magnetically label stem cells and monitor viability by MRI in the urologic field. This review focuses on the current role and limitations of MRI with labeled nanoparticles for tracking transplanted stem cells in urology.

Role of Ultrasound and Magnetic Resonance Imaging in Assessment of Müllerian Duct Anomalies

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
S B Ali ◽  
A M Salama ◽  
Z A Mahmoud
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging Modality ◽  
Mullerian Duct ◽  
Resonance Imaging ◽  
Müllerian Duct ◽  
Uterine Anomalies ◽  
Müllerian Duct Anomalies ◽  
Mullerian Duct Anomalies

Abstract Background Müllerian duct anomalies (MDAs) occur as a result from abnormal development of the uterus, cervix, and upper vagina. Many classification systems are presented, aiming to provide a more suitable and accurate categorization of female genital anomalies. Ultrasonography (US), Magnetic Resonance Imaging (MRI), or a combination of both are considered the gold standard in evaluation of uterine anomalies. Aim of the Work The main purpose of the study is to determine the diagnostic role of MRI and US in assessment of Müllerian duct anomalies and its subtypes. Patients and Methods This prospective analytical study was conducted at 14 patients suspected to have MDAs at Al-Demerdash Hospital-Ain Shams University in the period from September 2017 to May 2018, Their ages ranged from 15-40 year-old. All cases underwent Pelvic U/S and MRI, findings were correlated with laparoscopy. Results In this study the Mullerian duct anomalies were categorized into four groups: (a) congenital absence of the Müllerian ducts, or the Mayer-Rokitansky-Kuster-Hauser syndrome (n = 8), (b) disorders of vertical fusion (n = 1),(c) disorders of lateral fusion (n = 3) and (d) MDAs mimics(n = 2).MRI allowed correct diagnosis of 14 uterine anomalies (accuracy 100%) whereas US was correct in 13 out of 14 cases (accuracy 92.8%). Conclusion Two dimensional ultrasound stands as the first imaging modality of choice. MRI remains the reference imaging modality in diagnosis of Mullerian anomalies and it is subtypes and should be preserved for doubtful or complex cases.

scholarly journals Imaging of Spine Trauma

Neurosurgery ◽  
2016 ◽  
Vol 79 (5) ◽  
pp. 626-642 ◽  
Author(s):  
Lubdha M. Shah ◽  
Jeffrey S. Ross
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Tissue Injury ◽  
Spinal Injury ◽  
Imaging Techniques ◽  
Soft Tissue Injury ◽  
Neural Element ◽  
Resonance Imaging ◽  
The Stability

Abstract Imaging with computed tomography and magnetic resonance imaging is fundamental to the evaluation of traumatic spinal injury. Specifically, neuroradiologic techniques show the exact location of injury, evaluate the stability of the spine, and determine neural element compromise. This review focuses on the complementary role of different radiologic modalities in the diagnosis of patients with traumatic injuries of the spine. The role of imaging in spinal trauma classifications will be addressed. The importance of magnetic resonance imaging in the assessment of soft tissue injury, particularly of the spinal cord, will be discussed. Last, the increasing role of advanced imaging techniques for prognostication of the traumatic spine will be explored.

Dilated cardiomyopathy

2015 ◽  
pp. 468-487
Author(s):  
Tjeerd Germans ◽  
Massimo Lombardi ◽  
Danilo Neglia ◽  
Petros Nihoyannopoulos ◽  
Albert C. van Rossum
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Dilated Cardiomyopathy ◽  
Cardiac Magnetic Resonance Imaging ◽  
Imaging Techniques ◽  
Systolic Dysfunction ◽  
Resonance Imaging ◽  
Prognostic Role

Dilated cardiomyopathies either familial/genetic or non-familial/non-genetic in origin are characterized by dilatation of one or both ventricles and systolic dysfunction. The modern imaging techniques allow assessment of the primary myocardial defect as abnormalities in the structural, mechanical, metabolic, and perfusion patterns. The diagnostic and the prognostic role of the three most used imaging modalities (echocardiography, nuclear technologies, and cardiac magnetic resonance imaging) are discussed with the purpose of integrating the specific cardiac characteristics provided by each of them.

Diagnostic modalities for distal radioulnar joint

2016 ◽  
Vol 42 (4) ◽  
pp. 395-404 ◽  
Author(s):  
S. Jens ◽  
T. Luijkx ◽  
F. F. Smithuis ◽  
M. Maas
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Imaging Modality ◽  
Conventional Radiography ◽  
Distal Radioulnar Joint ◽  
Resonance Imaging ◽  
Radioulnar Joint ◽  
Joint Pathology ◽  
Imaging Characteristics

The first imaging modality in patients suspected of distal radioulnar joint pathology should be conventional radiography to exclude or diagnose wrist pathology including osteoarthritis, rheumatoid arthritis, calcium pyrophosphate deposition disease, (healed) fractures, or impaction syndromes. When conventional radiography is inconclusive, high resolution 3 Tesla magnetic resonance imaging is advised. We provide a broad overview of the literature regarding the use of intra-articular contrast both with computed tomography (CTA) or magnetic resonance imaging (MRA). Conventional arthrography and unenhanced computed tomography are not indicated. This article discusses the most useful imaging techniques in terms of clinical indications, patient positioning, technical imaging requirements, and diagnostic performance in patients with suspected distal radioulnar joint pathology. Furthermore, the most prevalent pathologies are discussed, with the focus on imaging characteristics in both stable and unstable distal radioulnar joints.

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