scholarly journals Imaging Modalities in Gynecology

2010 ◽  
Vol 4 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Raydeen M Busse
Keyword(s):  
Computer Technology ◽  
Imaging Technique ◽  
Imaging Modality ◽  
Imaging Techniques ◽  
Cost Effective ◽  
Imaging Modalities ◽  
List Type ◽  
Imaging Procedures ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

Abstract Although ultrasound is the primary imaging modality for most gynecologic diagnoses and conditions, knowledge of other diagnostic imaging procedures is important to gynecologists, emergency room physicians and radiologists who care for women of all ages. Since the early 1960s when ultrasound was introduced for the use in obstetrics and gynecology, other imaging techniques have rapidly come into play due to the tremendous advances in computer technology and in the field of engineering. It behooves us to become familiar and knowledgeable about the differences in these imaging techniques in order to gather the most information in the shortest amount of time to care for patients in the most efficient and cost-effective way. This review is meant for the use of most practicing physicians that are exposed to common as well as uncommon gynecologic conditions; therefore the primary imaging modalities discussed in this paper are limited to ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI). Objectives Understanding of the strengths and limitations of ultrasound, MRI and CT Obtaining knowledge of when to apply the most appropriate imaging technique for a certain clinical situations

Imaging Modalities in Gynecology

2009 ◽  
Vol 3 (2) ◽  
pp. 74-85
Author(s):  
Raydeen M Busse
Keyword(s):  
Computer Technology ◽  
Imaging Technique ◽  
Imaging Modality ◽  
Imaging Techniques ◽  
Cost Effective ◽  
Imaging Modalities ◽  
List Type ◽  
Imaging Procedures ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

Abstract Although ultrasound is the primary imaging modality for most gynecologic diagnoses and conditions, knowledge of other diagnostic imaging procedures is important to gynecologists, emergency room physicians and radiologists who care for women of all ages. Since the early 1960s when ultrasound was introduced for the use in obstetrics and gynecology, other imaging techniques have rapidly come into play due to the tremendous advances in computer technology and in the field of engineering. It behooves us to become familiar and knowledgeable about the differences in these imaging techniques in order to gather the most information in the shortest amount of time to care for patients in the most efficient and cost-effective way. This review is meant for the use of most practicing physicians that are exposed to common as well as uncommon gynecologic conditions; therefore the primary imaging modalities discussed in this paper are limited to ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI). Objectives Understanding of the strengths and limitations of ultrasound, MRI and CT Obtaining knowledge of when to apply the most appropriate imaging technique for a certain clinical situations

scholarly journals Metal-Based Complexes as Pharmaceuticals for Molecular Imaging of the Liver

2019 ◽  
Vol 12 (3) ◽  
pp. 137 ◽  
Author(s):  
Julia Greiser ◽  
Wolfgang Weigand ◽  
Martin Freesmeyer
Keyword(s):  
Magnetic Resonance Imaging ◽  
Positron Emission Tomography ◽  
Metal Complexes ◽  
Imaging Technique ◽  
Imaging Modality ◽  
Emission Tomography ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Magnetic Resonance Imaging Mri ◽  
Uptake Mechanisms

This article reviews the use of metal complexes as contrast agents (CA) and radiopharmaceuticals for the anatomical and functional imaging of the liver. The main focus was on two established imaging modalities: magnetic resonance imaging (MRI) and nuclear medicine, the latter including scintigraphy and positron emission tomography (PET). The review provides an overview on approved pharmaceuticals like Gd-based CA and 99mTc-based radiometal complexes, and also on novel agents such as 68Ga-based PET tracers. Metal complexes are presented by their imaging modality, with subsections focusing on their structure and mode of action. Uptake mechanisms, metabolism, and specificity are presented, in context with advantages and limitations of the diagnostic application and taking into account the respective imaging technique.

A cost effective screening protocol for vestibular schwannoma in the late 90s

1996 ◽  
Vol 110 (12) ◽  
pp. 1129-1132 ◽  
Author(s):  
K. V. Ravi ◽  
S. C. Wells
Keyword(s):  
Vestibular Schwannoma ◽  
Imaging Modality ◽  
Cost Effective ◽  
Resonance Imaging ◽  
Conventional Tests ◽  
Screening Protocol ◽  
Hospital Visits ◽  
Magnetic Resonance Imaging Mri ◽  
Clinical Records ◽  
The Cost

AbstractMagnetic resonance imaging (MRI) is the imaging modality of choice in diagnosing vestibular schwannoma (VS). Perceived high costs have prevented clinicians from using it as a screening investigation, although MR scanners are now widely available in the United Kingdon. In a retrospective study, the clinical records of all the patients who presented to the ENT department of Taunton and Someerset NHS Trust with suspected symptoms of VS during the year 1994 were analysed. The cost of confirming or refuting the diagnosis of VS in each patient ranged from £220.72 to £580.31 depending on the number of hospital visits and investigations performed. This study shows that the routine use of MR scanning for detection of VS is cost effective and more effective than the use of conventional tests.

scholarly journals Reasons for inadequate or incomplete imaging techniques

2018 ◽  
Vol 20 (4) ◽  
pp. 498 ◽  
Author(s):  
Cosmin Caraiani ◽  
Yi Dong ◽  
Anthony G. Rudd ◽  
Christoph F. Dietrich
Keyword(s):  
Foreign Bodies ◽  
Pediatric Patients ◽  
Imaging Technique ◽  
Imaging Techniques ◽  
Low Cost ◽  
Significant Proportion ◽  
Absolute Contraindication ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
And Performance

Even if imaging has developed considerably during the last decades there still exist several factors which limit its capacities. These factors can either limit the usage of a technique or degrade images making them difficult to interpret. Magnetic resonance imaging (MRI) has, as an absolute contraindication, the presence of metallic devices marked as “MRI unsafe” and metallic foreign bodies close to the eye or vital structures. Claustrophobia and artefacts reduce the application and performance of MRI in a significant proportion of patients. The major disadvantages of computed tomography(CT) are the exposure to ionizing radiation inducing malignancies especially in pediatric patients and the risk of contrast induced allergies and nephropathy. Ultrasound is a safe, easily available and low-cost imaging technique without significant side effects for the patient. Obesity or bloating can severely limit ultrasound capacities.This paper written by radiologists and clinicians, highlights the main reasons leading to inadequate imaging and points out solutions to avoid inaccurate diagnosis due to incomplete imaging or presence of artifacts.

Structural and functional imaging of large and opaque plant specimens

2019 ◽  
Vol 70 (14) ◽  
pp. 3659-3678 ◽  
Author(s):  
Linnea Hesse ◽  
Katharina Bunk ◽  
Jochen Leupold ◽  
Thomas Speck ◽  
Tom Masselter
Keyword(s):  
Imaging Technique ◽  
Imaging Techniques ◽  
Complex Geometries ◽  
Imaging Method ◽  
Resonance Imaging ◽  
Micro Computed Tomography ◽  
Thin Sections ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
Ct And Mri

AbstractThree- and four-dimensional imaging techniques are a prerequisite for spatially resolving the form–structure–function relationships in plants. However, choosing the right imaging method is a difficult and time-consuming process as the imaging principles, advantages and limitations, as well as the appropriate fields of application first need to be compared. The present study aims to provide an overview of three imaging methods that allow for imaging opaque, large and thick (>5 mm, up to several centimeters), hierarchically organized plant samples that can have complex geometries. We compare light microscopy of serial thin sections followed by 3D reconstruction (LMTS3D) as an optical imaging technique, micro-computed tomography (µ-CT) based on ionizing radiation, and magnetic resonance imaging (MRI) which uses the natural magnetic properties of a sample for image acquisition. We discuss the most important imaging principles, advantages, and limitations, and suggest fields of application for each imaging technique (LMTS, µ-CT, and MRI) with regard to static (at a given time; 3D) and dynamic (at different time points; quasi 4D) structural and functional plant imaging.

Vessel wall MRI and intracranial aneurysms

2015 ◽  
Vol 8 (11) ◽  
pp. 1160-1162 ◽  
Author(s):  
Pervinder Bhogal ◽  
Christopher Uff ◽  
Hegoda Levansri Dilrukshan Makalanda
Keyword(s):  
Vessel Wall ◽  
Intracranial Aneurysms ◽  
State Of The Art ◽  
Imaging Technique ◽  
Current Knowledge ◽  
Imaging Modality ◽  
Short Review ◽  
Resonance Imaging ◽  
Intracranial Vessel ◽  
Magnetic Resonance Imaging Mri

Vessel wall magnetic resonance imaging (MRI) is a novel imaging technique that allows the intracranial vessel walls to be imaged directly. This state-of the art imaging modality may potentially change the way aneurysms are evaluated and managed. In this short review we discuss the current knowledge with illustrative cases.

scholarly journals Magnetic Resonance Imaging of the Perineum in Pediatric Patients with Inflammatory Bowel Disease

2013 ◽  
Vol 27 (8) ◽  
pp. 476-480 ◽  
Author(s):  
Douglas H Jamieson ◽  
Peter Shipman ◽  
Kevan Jacobson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Inflammatory Bowel Disease ◽  
Magnetic Resonance ◽  
Bowel Disease ◽  
Imaging Modality ◽  
Imaging Techniques ◽  
Resonance Imaging ◽  
Inflammatory Bowel ◽  
Magnetic Resonance Imaging Mri ◽  
Pediatric Ibd

Magnetic resonance imaging (MRI) has profoundly changed and improved the investigation of abdominal and pelvic inflammatory bowel disease (IBD) in pediatrics. Using an imaging modality without ionizing radiation is of particular advantage because the pediatric IBD population is young and often requires repeat evaluation. MRI of the pelvis has become the imaging gold standard for detecting and monitoring perianal disease while bowel-directed imaging techniques (eg, enterography, enteroclysis and colonography) can accurately evaluate bowel inflammation in IBD. With recent technological innovations leading to faster and higher resolution, the role of MRI in IBD will likely continue to expand. The present article focuses on MRI of the perineum in pediatric IBD.

scholarly journals Design and Synthesis of Luminescent Lanthanide-Based Bimodal Nanoprobes for Dual Magnetic Resonance (MR) and Optical Imaging

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 354
Author(s):  
Walid Mnasri ◽  
Mahsa Parvizian ◽  
Souad Ammar-Merah
Keyword(s):  
Magnetic Resonance ◽  
Optical Imaging ◽  
Imaging Technique ◽  
Imaging Techniques ◽  
Design And Synthesis ◽  
Bimodal Imaging ◽  
Successive Image ◽  
Complete Set ◽  
Magnetic Resonance Imaging Mri ◽  
Physical And Chemical

Current biomedical imaging techniques are crucial for the diagnosis of various diseases. Each imaging technique uses specific probes that, although each one has its own merits, do not encompass all the functionalities required for comprehensive imaging (sensitivity, non-invasiveness, etc.). Bimodal imaging methods are therefore rapidly becoming an important topic in advanced healthcare. This bimodality can be achieved by successive image acquisitions involving different and independent probes, one for each mode, with the risk of artifacts. It can be also achieved simultaneously by using a single probe combining a complete set of physical and chemical characteristics, in order to record complementary views of the same biological object at the same time. In this scenario, and focusing on bimodal magnetic resonance imaging (MRI) and optical imaging (OI), probes can be engineered by the attachment, more or less covalently, of a contrast agent (CA) to an organic or inorganic dye, or by designing single objects containing both the optical emitter and MRI-active dipole. If in the first type of system, there is frequent concern that at some point the dye may dissociate from the magnetic dipole, it may not in the second type. This review aims to present a summary of current activity relating to this kind of dual probes, with a special emphasis on lanthanide-based luminescent nano-objects.

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.

scholarly journals Occlusal stabilization appliance: evaluation of its efficacy in the treatment of temporomandibular disorders

2004 ◽  
Vol 12 (3) ◽  
pp. 238-243 ◽  
Author(s):  
Elisa Emi Tanaka ◽  
Emiko Saito Arita ◽  
Bunji Shibayama
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Imaging Modality ◽  
Clinical Status ◽  
Signs And Symptoms ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Evaluation

Occlusal stabilization appliances or splints are the most widely employed method for treatment of temporomandibular disorders (TMD). Magnetic Resonance Imaging (MRI) is the most indicated imaging modality to evaluate the components of the temporomandibular joint (TMJ). Forty patients with signs and symptoms of temporomandibular disorders were treated with splints for a mean period of 12 months, comprising regular semimonthly follow-ups. After stabilization of the clinical status, occlusal adjustments and MRI evaluation were performed. It was concluded that the success of this kind of treatment are related to the total (70%) or partial improvement (22.5%) of painful symptomatology and to the functional reestablishment of the craniomandibular complex. The MRI allowed evaluation and also the conclusion that the splints provide conditions for the organism to develop means to resist to the temporomandibular disorders by means of elimination of several etiologic factors. Moreover, after treatment the patients are able to cope with disc displacements with larger or smaller tolerance.

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