However, computed tomography angiography (CTA) or dynamic contrast-enhanced magnetic resonance angiography (MRA) is often necessary for treatment planning. (springer.com)
Computed tomography angiography of the hand is performed with two successive acquisitions after injection of iodinated contrast medium. (springer.com)
To compare the diagnostic value of magnetic resonance (MR) and computed tomography (CT) for the detection of coronary artery disease (CAD) with special regard to calcifications. (nih.gov)
Computed tomography angiography demonstrated a causative cerebral aneurysm in 4 patients (5.2% yield), all of whom had nonperimesencephalic SAH (9.3% yield). (wustl.edu)
Computed tomography angiography is a valuable adjunct in the evaluation of patients with nonperimesencephalic SAH who have a negative initial catheter angiogram, demonstrating a causative cerebral aneurysm in 9.3% of patients. (wustl.edu)
Newer imaging modalities for diagnosis have since emerged, which consist of magnetic resonance angiography and, more recently, computed tomography angiography. (intechopen.com)
This chapter will discuss the pertinent imaging modalities: duplex ultrasonography, computed tomography angiography (CTA), magnetic resonance angiography (MRA), and the gold standard, conventional angiography. (intechopen.com)
Computed tomography (CT) scanning and magnetic resonance imaging (MRI) are making inroads, but diagnostic features are seen in only a minority of patients, although the cross-sectional images are superior and are vital in planning intervention. (medscape.com)
This indicator measures the total number and density per million populations (females aged 50-60 years in case of Mammography) on the availability and use of 6 medical devices - Computed Tomography (CT) scanners, Magnetic Resonance Imaging (MRI) units, Gamma Cameras, Mammography, Angiography Units, and Lithotripters. (who.int)
HlthRes-DB also contains indicators on the availability of the following medical equipment: computed tomography (CT) scanners, magnetic resonance imaging (MRI) units, positron emission tomography (PET) scanners, gamma cameras, digital subtraction angiography units, mammographs, radiation therapy equipment and lithotriptors. (who.int)
Catheter4
Unlike traditional angiography that involves placing a tube (catheter) into the body, MRA is noninvasive. (medlineplus.gov)
Segment-based sensitivity, specificity, and accuracy for the detection of stenoses larger than 50% were determined as defined by the gold standard catheter coronary angiography along with the subjective image quality (Grade 1-4). (nih.gov)
During angiography, a catheter is placed selectively via either the transjugular or transfemoral route into the hepatic vein to measure portal pressure. (medscape.com)
Noninvasive4
The Sperling Diagnostic Group provides fast, noninvasive, high resolution Magnetic Resonance Angiography. (sperlingdiagnostic.com)
Studies have now documented the high accuracy of coronary magnetic resonance angiography (MRA) for the noninvasive detection and definition of anomalous coronary arteries among patients with suspected anomalous coronary arteries of congenital conditions associated with anomalous coronary arteries. (johnshopkins.edu)
This is another noninvasive form of angiography combining computerized analysis of X-ray images with the use of intravenous contrast dye to allow your doctor to check the structure of your aorta and its nearby branches and to monitor blood flow. (mayoclinic.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)
Magnetic resonance imaging (MRI) may be beneficial because of its high visual detail. (medscape.com)
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)
The utility of high resolution 3D MR angiography and 3D spoiled-gradient recalled (SPGR) imaging sequences for surgical decision-making in hemifacial spasm, as measured by sensitivity, specificity, and positive and negative predictive values, has not been previously determined. (elsevierpure.com)
All patients underwent preoperative high-resolution 3D MR angiography and 3D SPGR imaging. (elsevierpure.com)
The sensitivity of the SPGR imaging/MR angiography interpretation of neurovascular compression (NVC) by both a neurosurgeon and 2 neuroradiologists was determined in relation to the presence of actual NVC during surgery. (elsevierpure.com)
Although high-resolution 3D MR angiography and 3D SPGR imaging was helpful in providing information about the anatomical relationship of cranial nerve VII and surrounding blood vessels, the authors determined that in the case of hemifacial spasm these types of imaging did not influence preoperative surgical decision-making. (elsevierpure.com)
Magnetic resonance imaging (MRI) of the brain revealed temporal foci suggestive of white matter demyelination. (cdc.gov)
Vascular imaging including FDG-PET (left) and magnetic resonance angiography are useful to evaluate vascular inflammation and damage in patients with large-vessel vasculitis. (nih.gov)
For over three decades, the Magnetic Resonance Laboratory has been developing methods applicable to imaging of the cardiovascular system. (mayo.edu)
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 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)
Magnetic resonance imaging (MRI) with and without contrast and magnetic resonance angiography (MRA) studies of her brain were normal, and the patient was sent home. (cdc.gov)
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. (msdmanuals.com)
Paramagnetic Contrast Agents Radiographic contrast agents are substances used to distinguish between internal structures in medical imaging, such as various types of x-rays and magnetic resonance imaging (MRI). (msdmanuals.com)
Angiography is the criterion standard arterial imaging study for the diagnosis of PAOD. (medscape.com)
Magnetic resonance imaging and angiography can provide detailed information about vascular anomalies. (medscape.com)
Cardiovascular Magnetic2
Journal of Cardiovascular Magnetic Resonance , 2 (3), 217-224. (johnshopkins.edu)
McConnell, MV, Stuber, M & Manning, WJ 2000, ' Clinical role of coronary magnetic resonance angiography in the diagnosis of anomalous coronary arteries ', Journal of Cardiovascular Magnetic Resonance , vol. 2, no. 3, pp. 217-224. (johnshopkins.edu)
Invasive3
This less invasive form of angiography produces detailed images of your blood vessels without the use of catheters or X-rays. (mayoclinic.org)
Doppler ultrasounds are used more often than angiography, as they are non-invasive and don't use X-ray radiation. (medbroadcast.com)
Digital subtraction angiography (DSA), although invasive, is the criterion standard. (medscape.com)
To date, no side effects from the magnetic fields and radio waves have been reported. (medlineplus.gov)
Magnetic and radio waves create a picture of the artery , sometimes with the use of contrast dye to get a clearer image. (healthline.com)
magnetic resonance angiography (MRA) works by using radio waves in a strong magnetic field to produce data that a computer turns into detailed images of tissue slices. (mayoclinic.org)
Scan1
Examiners can change how various tissues appear on a scan by varying the radio wave pulses, the strength and direction of the magnetic field, and other factors. (msdmanuals.com)
This study measured the extracranial intravascular volume flow rate response to acetazolamide using phase-contrast magnetic resonance angiography. (nih.gov)
Arteries2
Magnetic resonance angiography is used to generate images of arteries (and less commonly veins) in order to evaluate them for stenosis (abnormal narrowing), occlusions, aneurysms (vessel wall dilatations, at risk of rupture) or other abnormalities. (wikipedia.org)
Magnetic resonance angiography (MRA) is an image-based evaluation of the arteries and veins that carry blood to and from the heart, brain, and throughout the body. (sperlingdiagnostic.com)
Clinical1
Ferumoxytol-enhanced magnetic resonance angiography is a feasible method for the clinical evaluation of lower extremity arterial disease. (insa-lyon.fr)
Contrast-enhanced1
Contrast-enhanced magnetic resonance angiogram (MRA) shows a nidus and early draining veins in the forearm. (medscape.com)
Stroke1
Objectives Post-contrast magnetic resonance angiography (PC-MRA) enables visualization of vessel segments distal to an intra-arterial thrombus in acute ischemic stroke. (bmj.com)
Conventional1
The projectional nature of conventional x-ray angiography often leads to difficulty in the definition of anomalous vessels. (johnshopkins.edu)
Brain2
Brain magnetic resonance angiography and electroencephalography revealed normal findings. (cdc.gov)
Machine Learning-Enabled Determination of Diffuseness of Brain Arteriovenous Malformations from Magnetic Resonance Angiography. (cdc.gov)
For MRI, a person lies on a motorized table that is moved into the narrow interior of a large tubular scanner, which produces a strong magnetic field. (msdmanuals.com)
But when protons are surrounded by a strong magnetic field, as in an MRI scanner, they line up with the magnetic field. (msdmanuals.com)
Citation1
citation needed] Time-of-flight (TOF) or inflow angiography, uses a short echo time and flow compensation to make flowing blood much brighter than stationary tissue. (wikipedia.org)
Echo time1
Twenty-seven patients with known CAD were examined with a targeted, navigator-gated, free-breathing, steady-state free precession MR angiography sequence (repetition time = 5.6 milliseconds, echo time = 2.8 milliseconds, flip angle 110 degrees ) and 16-slice coronary CT angiography. (nih.gov)
Measurement1
Intracranial measurement techniques are being developed to further study cerebrovascular reserve using phase-contrast magnetic resonance angiography. (nih.gov)
Clearer1
Gadolinium agents change the magnetic field in a way that makes images clearer. (msdmanuals.com)
Images3
The Magnetic Resonance Laboratory is currently engaged in multiple projects that involve increasing image acquisition speed, advancing the means for image reconstruction, reducing artifacts in MR images, improving spatiotemporal resolution and increasing the value of MRI . (mayo.edu)
During an MRI, a computer records changes in the magnetic field around a person's body to create cross-sectional, detailed images. (msdmanuals.com)
Machine learning for evolutive lymphoma and residual masses recognition in whole body diffusion weighted magnetic resonance images. (cdc.gov)
Gradient1
It is created by turning on the magnetic field gradient for some time, and then switching the magnetic field gradient to the opposite direction for the same amount of time. (wikipedia.org)
Artery1
During angiography, a dye solution that shows up on an X-ray is injected into the artery. (medbroadcast.com)
Patients1
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)