Less magnetic resonance imaging. Medical search. Frequent questions

MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy. (wikipedia.org)
Numerous studies are under way to identify specific imaging markers for different types of dementia, including cerebral volumetric measurements, diffusion imaging, spectroscopy, very-high-field MRI scans of senile plaques, and PET scan markers of senile plaques. (medscape.com)
Magnetic resonance examination includes magnetic resonance imaging (MRI), MRI enhancement imaging, MRI functional imaging, MR diffusion imaging, MR perfusion imaging, and proton magnetic resonance spectroscopy ( 1 H-MRS) [ 10 ]. (hindawi.com)
Key to its success has been the unique ability to combine imaging with nuclear magnetic resonance spectroscopy-a capability that has led to a host of powerful modalities for imaging. (2physics.com)
In a recent proof-of-concept experimental work [12], we demonstrate a new technique, which allows us to perform pulsed nuclear magnetic resonance imaging and spectroscopy with nanometer-scale spatial resolution. (2physics.com)
Recently, 1 H-magnetic resonance spectroscopy chemical shift imaging (CSI) using choline/creatine (Cho/Cr) or choline/N-acetylaspartate (Cho/NAA) ratios has emerged as a new non-invasive, widely available alternative. (bmj.com)
Magnetic resonance spectroscopy. (bvsalud.org)
Additionally, GABA was measured using magnetic resonance spectroscopy in the thalamic and striatal regions of the brain. (cdc.gov)

Second-tier imaging with molecular methods, preferably with fluorodeoxyglucose positron emission tomography (FDG-PET) (or single-photon emission CT [SPECT] if PET is unavailable), can provide greater diagnostic specificity. (medscape.com)
Given the results of this study, our research suggests new alternatives to the presentation of medical images and provides an increased understanding of the usability of existing medical image viewing methods. (spie.org)
These "pulsed" magnetic resonance methods [4] enable highly-efficient imaging by acquiring data from the entire sample at all times. (2physics.com)
Magnetic resonance imaging (MRI) is suitable for imaging of cartilage and meniscus, and quantitative imaging methods have the potential to probe the molecular composition and microstructure. (lu.se)
The consistency of the two detection methods in the diagnosis of cerebral amyloid angiopathy hemorrhage and the difference in image quality were analyzed. (ijpsonline.com)
METHODS: MR imaging and radiographs were performed in wrists (n = 227) and 2nd and 3rd MCP (n = 188) of 132 patients with inflammatory arthritis to identify erosions. (jrheum.org)
Despite advances in imaging methods, pregnancy may progress before diagnosis. (researchsquare.com)
A general background introduction to parallel MRI is given that is structured around the classical view of image space and k-space based methods. (elsevierpure.com)
Both linear and non-linear methods are covered, followed by a discussion of recent efforts to further improve parallel imaging using machine learning, and specifically using artificial neural networks. (elsevierpure.com)
Image-domain based techniques that introduce improved regularizers are covered as well as k-space based methods, where the focus is on better interpolation strategies using neural networks. (elsevierpure.com)

A variety of imaging modalities, including structural and functional magnetic resonance imaging (MRI) and positron emission tomography (PET) studies of cerebral metabolism, have shown characteristic changes in the brain of patients with Alzheimer disease in prodromal and even presymptomatic states. (medscape.com)
Plain radiographs, bone scans, and computed tomography are not accurate imaging modalities for this purpose. (nih.gov)
Diagnosis is difficult clinically, even with diagnostic imaging modalities. (researchsquare.com)

Practice parameters for diagnosis and evaluation of dementia, as published by the American Academy of Neurology (AAN), consider structural brain imaging to be optimal. (medscape.com)
Magnetic resonance imaging (MRI), which offers a number of advantages such as unlimited tissue penetration, zero ionizing radiation, and a noninvasive nature, has received considerable attention over the past two decades as a technique for clinical diagnosis. (materialstoday.com)
This work provides an analysis of five major deep learning architectures with the aim of refinement of Magnetic Resonance Imaging (MRI) based diagnosis of PD, evaluated using multiple performance indices. (amrita.edu)
In recent y, with the development of science and technology, magnetic susceptibility-weighted imaging (SWI) with higher sensitivity was used in the diagnosis of the minute lesions of central nervous system diseases [ 4 , 5 ]. (ijpsonline.com)
Is the Apprehension Test Sufficient for the Diagnosis of Anterior Shoulder Instability in Young Patients without Magnetic Resonance Imaging (MRI)? (annals.edu.sg)
The purpose of this study is to compare the sensitivities and positive predictive values (PPV) of the anterior apprehension test and magnetic resonance imaging (MRI) in the diagnosis of anterior labral tears in young patients with shoulder instability and to determine if surgery could be carried without this investigation in selected patients. (annals.edu.sg)
We undertook a retrospective study of 168 patients aged between 15 and 30 years with a history of shoulder dislocation and compared the sensitivities and the PPV of the apprehension test with both MRI and magnetic resonance arthrograms (MRA) in the diagnosis of a Bankart lesion. (annals.edu.sg)
Over the last decades, major advances in imaging diagnosis have contributed to an improved understanding of temporomandibular disorders. (bvsalud.org)
The evolution of this imaging method has also allowed a more precise diagnosis of cases of TMJ disk adhesion, facilitating its correct manegement 2 . (bvsalud.org)

MRI requires a magnetic field that is both strong and uniform to a few parts per million across the scan volume. (wikipedia.org)
Coronal, T1-weighted magnetic resonance imaging (MRI) scan in a patient with moderate Alzheimer disease. (medscape.com)
Axial, T2-weighted magnetic resonance imaging (MRI) scan reveals atrophic changes within bilateral temporal lobes with prominence of the sylvian fissures. (medscape.com)
Pictures from an MRI scan are digital images that can be saved and stored on a computer for further study. (uofmhealth.org)
To evaluate the etiology of free fluid and location of the gestational sac, an abdominal magnetic resonance imaging (MRI) scan was planned. (researchsquare.com)
A magnetic resonance image scan of the right sacrum suggested osteomyelitis. (cdc.gov)

Compared to CT, MRI provides better contrast in images of soft tissues, e.g. in the brain or abdomen. (wikipedia.org)
Brain image reveals hippocampal atrophy, especially on the right side. (medscape.com)
Functional Magnetic Resonance Imaging or fMRI is a safe, non-invasive diagnostic procedure used for measuring brain activity. (medindia.net)
It is a newer technology that can measure the metabolic changes inside the brain and also the abnormalities which are not possible using other conventional imaging techniques. (medindia.net)
Magnetic Resonance Imaging (MRI) is the precursor of fMRI, which has been extensively used for studying anatomy of the brain. (medindia.net)
It can only capture the images of the brain. (medindia.net)
The f in front of MRI stands for functional , which ideally means that the same technique can capture images when the brain is in action. (medindia.net)
MRI uses a magnetic field, radiofrequency waves to capture images of the brain. (medindia.net)
Therefore, fMRI can capture images of the active regions of the brain by measuring the blood flow, the volume of blood and the amount of oxygen used which is called as the Blood-Oxygen-Level-Dependant (BOLD) signal. (medindia.net)
[ 24 ] Imaging findings in brain contusions tend to vary because of the stages of evolution common to these lesions. (medscape.com)
See the diagram and images of brain contusion below. (medscape.com)
At present, the main method of imaging assessment of meningioma invasion of brain tissue is also MRI. (hindawi.com)
To demonstrate and describe fetal head molding and brain shape changes during delivery, we used three-dimensional (3D) magnetic resonance imaging (MRI) and 3D finite element mesh reconstructions to compare the fetal head between prelabor and the second stage of labor. (plos.org)
With this in mind, we performed sequential Magnetic Resonance Imaging (MRI) imaging and 3D reconstruction of the fetal skull and brain in a series of normal pregnancies with planned vaginal deliveries before the onset of labor and then during the second stage of labor. (plos.org)
Variations of MRI Sagittal T1-weighted image of the brain shows normal midline structures. (msdmanuals.com)

abstract = "The use of standardized imaging protocols is paramount in order to facilitate comparable, reproducible images and, consequently, to optimize patient care. (kcl.ac.uk)
abstract = "Following the success of deep learning in a wide range of applications, neural network-based machine learning techniques have received interest as a means of accelerating magnetic resonance imaging (MRI). (elsevierpure.com)

2% NAC]) is a novel magnetic resonance imaging contrast marker that facilitates visualization of implanted radioactive seeds in cancer brachytherapy. (hindawi.com)
The advances in magnetic resonance (MR) of TMJ allowed better visualization of intra-articular structures, especially the TMJ disk, and made it the currently preferred imaging method for the evaluation of disk position and morphological alterations 2 . (bvsalud.org)

Hybrid ultrasound/magnetic resonance simultaneous acquisition and image fusion for motion monitoring in the upper abdomen. (insa-lyon.fr)

Diffusion MRI and functional MRI extend the utility of MRI to capture neuronal tracts and blood flow respectively in the nervous system, in addition to detailed spatial images. (wikipedia.org)
What is Functional Magnetic Resonance Imaging (fMRI)? (medindia.net)

Magnetic resonance imaging scans of 22 patients with confirmed lesions of the thoracolumbar spine were studied. (nih.gov)
Two experienced neuroradiologists blindly reviewed the magnetic resonance imaging scans and determined benign or malignant lesions. (nih.gov)
A canine study was performed to simulate a compression fracture model with a vertebral osteotomy in two dogs, and serial contrast-enhanced magnetic resonance imaging scans were performed 15, 30, 60 and 90 days after surgery. (nih.gov)
Magnetic resonance imaging scans can detect malignant vertebral lesions early, but acute healing compression fractures may mimic the findings of metastatic lesions. (nih.gov)
The use of contrast-enhanced magnetic resonance imaging scans and serial magnetic resonance imagings are helpful for additional differentiation between benign and malignant compression fractures. (nih.gov)
In addition to magnetic resonance imaging scans, other diagnostic tests and clinical findings should be correlated before biopsy or surgery of the suspected lesion. (nih.gov)
On CT scans, posterior fossa images often are degraded by beam-hardening artifacts. (medscape.com)

While MRI is most prominently used in diagnostic medicine and biomedical research, it also may be used to form images of non-living objects, such as mummies. (wikipedia.org)
Magnetic resonance imaging is a diagnostic imaging modality that is capable of demonstrating a wide variety of soft-tissue lesions with contrast resolution equal or superior to CT scanning in various parts of the body. (cms.gov)
According to the guidelines of the European Society of Neuro-Oncology, the main diagnostic method for meningioma is magnetic resonance imaging (MRI). (hindawi.com)
For instance, the advent of diagnostic imaging tools such as computed tomography (CT), magnetic resonance imaging (MRI) and nuclear medicine, has contributed significantly to the diagnoses of neurological diseases as these tools provide three-dimensional anatomy of the human body. (scirp.org)
To investigate the diagnostic value of the magnetic susceptibility-weighted imaging and routine magnetic resonance imaging in cerebral amyloid angiopathy hemorrhage. (ijpsonline.com)
Magnetic susceptibility-weighted imaging has obvious advantages in detecting the micro cerebral hemorrhage, and it can show the characteristics of the cerebral amyloid angiopathy multiple hemorrhages, and its diagnostic value was better than that of routine routine magnetic resonance imaging. (ijpsonline.com)

MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. (wikipedia.org)
Pulses of radio waves excite the nuclear spin energy transition, and magnetic field gradients localize the polarization in space. (wikipedia.org)
Magnetic resonance imaging (MRI) technology uses a powerful magnet, radio waves, and an advanced computer system to produce detailed pictures of the organs, bones, and tissues inside your body. (dukehealth.org)
You won't have pain from the magnetic field or radio waves used for the MRI test. (uofmhealth.org)
Non-hazardous magnetic field and radio waves are used to obtain MR imaging, therefore the examination-related risk is almost non-existent. (whatclinic.com)
Magnetic Resonance Imaging (MRI) Magnetic resonance imaging (MRI) is a type of medical imaging that uses a strong magnetic field and very high frequency radio waves to produce highly detailed images. (merckmanuals.com)
Magnetic Resonance Imaging (MRI) is a non-invasive medical imaging technique that uses a magnetic field and computer-generated radio waves to create detailed images. (lu.se)
To date, no side effects from the magnetic fields and radio waves have been reported. (medlineplus.gov)

Axial T2 image shows that the DVA can be subtle. (medscape.com)
Axial proton density-weighted image shows an area of marked signal intensity loss in the right cerebellum adjacent to the developmental venous anomaly (DVA). (medscape.com)

MRI was originally called NMRI (nuclear magnetic resonance imaging), but "nuclear" was dropped to avoid negative associations. (wikipedia.org)
Magnetic resonance imaging (MRI, formerly known as nuclear magnetic resonance imaging - NMRI) is a noninvasive method of graphically representing the distribution of water and other hydrogen-rich molecules in the human body. (cms.gov)

4 Magnetic resonance imaging (MRI) has been shown to be a more sensitive method than radiography to demonstrate inflammatory and destructive changes in the knee and wrist joints of patients with RA. (bmj.com)
Lumbar vertebrae periosteal reactions were identified in 19/23 patients on MR images compared with 15/17 patients with radiography. (avmi.net)

Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. (wikipedia.org)
Since then, the conventional radiology (Rx) has been upgraded with the development of various other body imaging techniques to diagnose complex neurological disorders. (scirp.org)

CMS received a request to delete the national noncoverage of blood flow measurement from the Magnetic Resonance Imaging NCD at 220.2 of the NCD Manual and thus permit local Medicare contractor discretion to cover this use under 220.2(D). The requestor points to an apparent contradiction between this noncoverage provision and the national coverage of magnetic resonance imaging under the Magnetic Resonance Angiography NCD at 220.3 of the NCD Manual. (cms.gov)
Magnetic resonance angiography (MRA) may be useful for distinguishing between UBCs and ABCs. (medscape.com)
Hence, the present study investigated the applicability of an advanced cardiovascular magnetic resonance (CMR) whole heart imaging approach utilizing nonselective excitation and compressed sensing for anatomical assessment and interventional guidance of CHD patients in comparison to conventional dynamic CMR angiography. (techscience.com)
Magnetic resonance angiography (MRA) is an MRI exam of the blood vessels. (medlineplus.gov)

In this study, magnetic resonance imaging (MRI) was used to evaluate the relapse features of patients with Rolandic meningioma after the microsurgery. (hindawi.com)
To sum up, the microsurgical treatment helped improve the quality of life of patients with Rolandic meningioma, and MR imaging could be used to determine the relapse of Rolandic meningioma after microsurgical treatment. (hindawi.com)
Consequently, MR imaging technology has been widely applied in the evaluation of postoperative tumor relapse in patients who receive neurosurgery operations such as meningioma. (hindawi.com)
The authors investigate the usefulness of magnetic resonance imaging in differentiating benign versus malignant compression fractures by reviewing patients and a fracture model in a canine model. (nih.gov)
Varying degrees of fetal head molding were present in the infants of all seven patients studied during the second phase of labor compared with the images acquired before birth. (plos.org)
OBJECTIVES To evaluate synovial membrane hypertrophy, tenosynovitis, and erosion development of the 2nd to 5th metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints by magnetic resonance imaging in a group of patients with rheumatoid arthritis (RA) or suspected RA followed up for one year. (bmj.com)
All patients were diagnosed by routine magnetic resonance imaging and magnetic susceptibility-weighted imaging before the operation. (ijpsonline.com)
OBJECTIVE: To compare magnetic resonance (MR) images obtained using a portable MR system to radiographs for identifying bone erosions in the wrists and metacarpophalangeal (MCP) joints of patients with inflammatory arthropathy. (jrheum.org)
RESULTS: MR imaging identified bony erosions in 125 (95%) patients and in 315 (78%) body locations. (jrheum.org)
The advent of computer tomography (CT) arthrogram, magnetic resonance imaging (MRI) and magnetic resonance arthrogram (MRA) have enabled surgeons to predict preoperatively the intra-articular pathology with greater accuracy so as to counsel patients and to obtain informed consent. (annals.edu.sg)
Image quality of nsWHcs was rated as excellent/good in 98% of patients. (techscience.com)
The proposed nsWHcs imaging approach provided a consistently high image quality and a homogeneous signal intensity distribution within the pulmonary and systemic circulation in pediatric patients and adults with a wide spectrum of congenital heart diseases. (techscience.com)
Les antécédents et les examens cliniques de 752 patients consultant dans un centre de recherche sur l'endocrinologie et le métabolisme ont été consignés et des analyses en laboratoire ont été réalisées. (who.int)

This paper presents a Computer Assisted Detection system based on medical imaging techniques and capable of labeling potentially cancerous breast lesions. (springer.com)
The thumbnail technique, implemented in many current commercial medical imaging systems, presents an overview of the images in a thumbnail bar while selected images are magnified in a separate window. (spie.org)

on behalf of the Consensus for Magnetic Resonance Protocols Study (COMPS) Group (2022). (kcl.ac.uk)
on behalf of the Consensus for Magnetic Resonance Protocols Study (COMPS) Group 2022, ' Guidelines for magnetic resonance imaging in pediatric head and neck pathologies: a multicentre international consensus paper ', Neuroradiology , vol. 64, no. 6, pp. 1081-1100. (kcl.ac.uk)

In conclusion, these tests show that a supervised machine learning approach to the detection of breast lesions in Magnetic Resonance Images is consistent, and shows good performance, especially from a False Negative reduction perspective. (springer.com)
Magnetic resonance examination is characterized by multidirectional and external parametric imaging, which can clearly show the lesions of tumor soft tissue and microvessels [ 9 ]. (hindawi.com)
Magnetic resonance imaging reliably distinguished benign versus malignant lesions based on the anatomic distribution and intensity of signal changes of bone and adjacent tissues, contrast enhancement characteristics, and changes over time. (nih.gov)

It remains the imaging modality of choice for the prenatal assessment of the fetus. (medscape.com)

We present a method for knee cartilage segmentation in magnetic resonance images (MRI). (spie.org)

To perform a study, the person is positioned within an MRI scanner that forms a strong magnetic field around the area to be imaged. (wikipedia.org)
For an MRI test, you are placed inside the magnet so that your shoulder is inside the strong magnetic field. (uofmhealth.org)

mean, 35 years) underwent CMR imaging including a free-breathing, ECG-triggered 3D nonselective SSFP whole heart acquisition using compressed SENSE (nsWHcs). (techscience.com)
20 healthy volunteers , 20 with acute myocardial infarction , 18 with hypertrophic and 10 with non-ischemic dilated cardiomyopathy underwent manganese -enhanced magnetic resonance imaging . (bvsalud.org)

Repeatability and reproducibility of cardiac manganese-enhanced magnetic resonance imaging. (bvsalud.org)
Manganese -enhanced magnetic resonance imaging can provide a surrogate measure of myocardial calcium handling. (bvsalud.org)
Manganese -enhanced magnetic resonance imaging has high repeatability and reproducibility in healthy myocardium and high repeatability in diseased myocardium . (bvsalud.org)

Measurements of the temperature-dependent magnetization demonstrated a Curie temperature around 275 K. We conducted nuclear magnetic resonance (NMR) and MRI studies of samples with different concentrations of ferrite nanoparticles suspended in agar gel. (nist.gov)
This multicentre study assessed the intra- and interreader reproducibility of quantitative tophus volume measurements from magnetic resonance images (MRI) in subjects with palpable gouty tophi. (nih.gov)
To observe and evaluate the effects of manipulation on knee osteoarthritis (KOA) using T2-mapping and magnetic resonance imaging (MRI)-based volume measurements. (jcimjournal.com)

With respect to the severity of neurological diseases and the increasing popularity of imaging tools, the current study has evaluated the findings of CT and MRI in examining neurological disorders. (scirp.org)
MRI sequences such as diffusion-weighted imaging (DWI) with apparent diffusion coefficient (ADC) maps and spectroscopic studies have improved quantitative analysis and provided potential for correlating image findings with medulloblastoma molecular subtypes. (medscape.com)
The magnetic resonance (MR) imaging findings in 22 dogs and two cats with confirmed paraspinal infection of the thoracolumbar spine were characterized. (avmi.net)

Sagittal proton density-weighted 3-tesla magnetic resonance image of the right knee shows meniscocapsular separation. (msdmanuals.com)

To improve imaging sensitivity, contrast agents have been employed to accelerate the relaxation rate of water molecules and thus to increase the contrast between specific tissues or organs of interest. (materialstoday.com)
The topics to be covered in this course include: 1) theoretical and experimental aspects of MRI and their application to problems in medicine and biology, 2) physical principles underlying the generation and detection of the nuclear magnetic resonance signal, 3) MRI instrumentation, and 4) Nuclear magnetic resonance relaxation parameters and how they affect contrast in a magnetic resonance image. (uml.edu)

Magnetic resonance imaging (MRI) is more sensitive and accurate than CT for detecting contusions because of its multiplanar capability and greater sensitivity for edema. (medscape.com)
To determine the sensitivity and specificity of magnetic resonance imaging in differentiating benign versus malignant compression fractures of the spine and to obtain distinguishing features in magnetic resonance imaging. (nih.gov)
Based on the postoperative pathological results, the sensitivity of routine magnetic resonance imaging and magnetic susceptibility-weighted imaging was 67.50 % and 90.25 %, respectively. (ijpsonline.com)

The fMRI measures the magnetic signal from hydrogen nuclei in water (H2O). (medindia.net)

Magnetic resonance image (MRI)-guided focal laser ablation (FLA) therapy is a promising potential treatment option for select men with localized prostate cancer, and may result in fewer side effects than whole-gland therapies, while still achieving oncologic control. (uwo.ca)
Multivariate Logistic regression analysis was used to analyze the preoperative imaging features of routine magnetic resonance imaging and magnetic susceptibility-weighted imaging and the risk of focal hemorrhage. (ijpsonline.com)

In this study, we developed a fully automated approach to right atrial segmentation in 4-chamber long-axis magnetic resonance image (MRI) cine sequences by applying a U-Net based neural network approach followed by a contour reconstruction and refinement algorithm. (ieee.org)
A number of ideas inspired by deep learning techniques from computer vision and image processing have been successfully applied to non-linear image reconstruction in the spirit of compressed sensing for both low dose computed tomography and accelerated MRI. (elsevierpure.com)

Diffusion tensor imaging (DTI) is an extension of DWI that can show white matter tracts in 3 dimensions (tractography) and can be used to monitor the integrity of CNS tracts affected by aging and disease. (msdmanuals.com)

Perfusion-weighted imaging (PWI) can detect areas of hypoperfusion in early ischemic stroke but cannot yet reliably distinguish areas with benign oligemia from those with injurious hypoperfusion due to infarction. (msdmanuals.com)

The detail-in-context technique accommodated many individual strategies and offered good capabilities for comparing different images whereas the thumbnail technique strongly encouraged sequential examination of the images and allowed for high magnification factors. (spie.org)

Cardiac MRI creates images from the resonance of hydrogen atoms when they are polarized to face in one direction and then hit with an electromagnetic pulse to knock them off axis. (dicardiology.com)

Evaluation of the proposed method on the remaining 40 MR image sequences excluding a single outlier sequence yielded promising Sorensen--Dice coefficients and Hausdorff distances of 95.2% and 4.64 mm respectively before refinement and 94.9% and 4.38 mm afterward. (ieee.org)
In conclusion, the magnetic resonance imaging exam of the temporomandibular joint can be considered an exam of choice for the evaluation of disc positioning and its morphological alterations. (bvsalud.org)

Although it remains a significant challenge, there is considerable interest to extend these powerful spectroscopic and imaging capabilities to the nanometer scale as the capability to perform nanoscale MRI would revolutionize biology and medicine. (2physics.com)

Magnetic resonance imaging (MRI) is a test done with a large machine that uses a magnetic field and pulses of radio wave energy to make pictures of the shoulder. (uofmhealth.org)
We use a nanometer-scale metal wire, or constriction, to generate intense static and radiofrequency magnetic field gradient pulses, which create temporal correlations in the statistical spin fluctuations in the sample. (2physics.com)
Electric current through the constriction generates static and radiofrequency magnetic field pulses, which are used to image protons in the polystyrene coating. (2physics.com)
In addition to providing pulses for magnetic resonance, the metal constriction also produces a magnetic field gradient that oscillates at the silicon nanowire mechanical resonance frequency. (2physics.com)

Objective In diffusely infiltrating gliomas (DIG), positron emission tomography (PET) imaging is a powerful method for detection of anaplastic foci. (bmj.com)

Exogenous contrast agents may be given to the person to make the image clearer. (wikipedia.org)
For CT and MRI of the digestive tract, doctors may give people substances that can be seen on the imaging test (contrast agents) to help distinguish one tissue or structure from its surroundings. (merckmanuals.com)
This section includes MR analysis software, MRI scanners, gadolinium contrast agents, and related magnetic resonance accessories. (dicardiology.com)

Siemens MAGNETOM Spectra Closed-type MRI equipment with the magnetic field strength of 3 T (teslas) allows promptly performing a high-quality examination without losing the image resolution, which is especially important in case of severe injuries and diseases when it is hard for a patient to stay motionless for a long time. (whatclinic.com)

This image shows free-floating exteriorized bowel in relation to the anterior abdominal wall. (medscape.com)

It is a phenomenon in which the atoms in the body emit electromagnetic radiation in response to a magnetic field. (medindia.net)
The wobbling of the atoms is what is recorded by computers and used to reconstruct the images. (dicardiology.com)

Medulloblastomas may present with heterogeneous imaging aspects and specific phenotypic radiologic features that may reflect tumor histological and biological characteristics. (medscape.com)

dubious - discuss] In most medical applications, hydrogen nuclei, which consist solely of a proton, that are in tissues create a signal that is processed to form an image of the body in terms of the density of those nuclei in a specific region. (wikipedia.org)
Using different protocol sequences, various contrast type images can be created with MRI to enhance various tissues or to provide physiological data on the function of the heart. (dicardiology.com)

Identification of wrist and metacarpophalangeal joint erosions using a portable magnetic resonance imaging system compared to conventional radiographs. (jrheum.org)

The RF signal may be processed to deduce position information by looking at the changes in RF level and phase caused by varying the local magnetic field using gradient coils. (wikipedia.org)

Unenhanced spin-echo images provided satisfactory tophi images and were less subject to interfering artefacts than gadolinium-enhanced gradient-echo images. (nih.gov)

The major components of an MRI scanner are the main magnet, which polarizes the sample, the shim coils for correcting shifts in the homogeneity of the main magnetic field, the gradient system which is used to localize the region to be scanned and the RF system, which excites the sample and detects the resulting NMR signal. (wikipedia.org)

Appropriate imaging studies for a UBC should always include plain radiographs. (medscape.com)

Anatomy38

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Phenomena and Processes43

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20222

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