Angiography with contrast. Medical search. Frequent questions

The constraints from contrast kinetics as in conventional approaches were eliminated. (ismrm.org)
All patients thereafter underwent conventional angiography to confirm the diagnosis and to treat the lesions (embolization or sclerotherapy). (unica.it)
Intraoperative conventional angiography has proven to be overly cumbersome and associated with elevated risk of iatrogenic postoperative renal insufficiency. (medscape.com)
Some consider CTA to rival conventional angiography in the evaluation of some vascular disorders of the brain and head and neck. (ajnr.org)
The condition may have been missed had conventional angiography been the only diagnostic examination performed. (ajnr.org)

Coronary artery centerline extraction in cardiac CT angiography (CCTA) images is a prerequisite for evaluation of stenoses and atherosclerotic plaque. (nih.gov)
The perfusion evaluation is new, and is a consequence of capturing all three phases of fluorescent full-phase angiography over multiple cardiac cycles. (medscape.com)
Flow imaging, MR angiography, cardiac gated imaging. (abdn.ac.uk)
Coronary angiography Cardiac catheterization and coronary angiography are minimally invasive methods of studying the heart and the blood vessels that supply the heart (coronary arteries) without doing surgery. (msdmanuals.com)

Hossain MA , Costanzo E , Cosentino J , Contrast-induced nephropathy: pathophysiology, risk factors, and prevention . (avma.org)
Although kidney function, creatinine, and estimated glomerular filtration rate was lower in CO2 at baseline, the incidence of contrast-induced nephropathy was lower in CO2 compared to ICM. (aston.ac.uk)
The Society for Cardiovascular Angiography and Interventions (SCAI) has released recommendations for the prevention of contrast induced nephropathy (CIN) -- potentially fatal kidney damage that can occur when a special dye is injected during certain cardiovascular procedures. (sciencedaily.com)
The contrast medium (CM) in CT pulmonary angiography may induce adverse effects to patients, and higher CM is associated with higher rates of contrast-induced-nephropathy and mortality. (brieflands.com)
Contrast medium (CM) is required in CTPA, and the CM may cause negative effects for the patients, among which contrast-induced nephropathy (CIN) is particularly prominent ( 6 ). (brieflands.com)
Unlike contrast-enhanced angiography, MRA has no attendant risk of nephropathy caused by contrast agent or cholesterol-emboli syndrome. (medscape.com)
Arg Polymorphism of KIF 6 Gene on Contrast Induced Nephropathy in Patients Undergoing Coronary Angiography or Percutaneous Coronary Intervention. (cdc.gov)

To determine the image quality and diagnostic performance of an optimized pulmonary computed tomography angiography (CTA) protocol in terms of radiation and contrast volume saving. (nih.gov)
OBJECTIVES: The aim of this study was to intraindividually compare the effect of different chaser flow rates, volumes, and fluids on contrast enhancement in multidetector-row computed tomography. (maastrichtuniversity.nl)
Methods: A contrast free angiography technique is validated in silico through the use of computer-generated images and in vivo through microcomputed tomography (μCT) of live mice conducted using a laboratory-based x-ray source. (excillum.com)
Acoustic angiography was first developed by the Dayton Laboratory at North Carolina State University and provides a safe, portable, and inexpensive alternative to the most common methods of angiography such as Magnetic Resonance Angiography and Computed Tomography Angiography. (wikipedia.org)
However, many other methods are used for performing angiography in special circumstances, such as the use of optical coherence tomography for performing angiography during retinal exams. (wikipedia.org)
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)
Coronary computed tomography angiography (CCTA) is a noninvasive method to image the coronary arteries. (medscape.com)
Computed tomography angiography (CTA) is often used as a gold standard method for evaluating vessel diameters in ischemic tissue after therapy. (biomedcentral.com)
Radiologic modalities used for assessment include lung scintigraphy, digital subtraction pulmonary angiography (DSPA), pulmonary computed tomography angiography (PCTA), and pulmonary magnetic resonance angiography (PMRA). (medscape.com)
information about the reliability of computed tomography angiography (CTA) for evaluating residual flow through a PSS after treatment. (uni-giessen.de)
Similar to the RUC request to create combined computed tomography (CT) abdomen and pelvis codes, the ACR and other radiology specialty societies were asked to create a combined code to describe computed tomographic angiography (CTA) of the abdomen and pelvis performed during the same session, as these codes are reported together greater than 75 percent of the time. (acr.org)
CT angiography In computed tomography (CT), which used to be called computed axial tomography (CAT), an x-ray source and x-ray detector rotate around a person. (msdmanuals.com)
5. Reliability of virtual non-contrast computed tomography angiography: comparing it with the real deal. (lu.se)
6. Material decomposition in dual-energy computed tomography separates high-Z elements from iodine, identifying potential contrast media tailored for dual contrast medium examinations. (lu.se)

Incorporating flow-adjusted technology, CIA provides detailed images without the need for costly contrast material and enables clinicians to perform reproducible noninvasive angiography studies using magnetic resonance (MR) technology. (medical.canon)

Pulmonary angiography is a test to see how blood flows through the lung. (medlineplus.gov)
To determine the optimal monochromatic energy levels in dual-energy spectral CT pulmonary angiography (CTPA) with low contrast dosage. (brieflands.com)
Pulmonary angiography has been regarded as the gold standard for the diagnosis or exclusion of pulmonary embolism for decades, but non-invasive CT pulmonary angiography (CTPA) provides similar diagnostic accuracy. (brieflands.com)

The anatomical assessment of coronary artery disease is clinically performed with either invasive X-ray coronary angiography or coronary computed coronary angiography (CCTA). (peachnewmedia.com)

CIA offers better visualization of smaller vessels with greater contrast and better separation of arterial and venous blood flows. (medical.canon)
A contrast agent is used for better visualization of the arterial anatomy to find out disease or related conditions, such as aneurysms, blockages, blood clots, tumours, vessel tears and disorganized blood vessels. (hod.care)
Patients requiring investigations to exclude acute stroke in this setting should not receive additional intravenous or intra-arterial contrast, although MR with gadolinium appears safe. (bmj.com)
Early investigations identified a number of performance targets, including the desirability for high-spatial-resolution 3D imaging, need to synchronize the acquisition to the arterial phase of the contrast bolus passage, and desirability for minimal enhancement of the venous system. (elsevierpure.com)
Maximum intensity projection of a T1-weighted MRI acquired after the intravenous administration of contrast material shows a normal-appearing pulmonary arterial tree. (medscape.com)
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)
PURPOSE: To improve gadolinium-enhanced magnetic resonance (MR) angiogram quality by automatically synchronizing acquisition of central k- space image data with the arterial phase of contrast material bolus infusion. (johnshopkins.edu)
05). CONCLUSION: Automatic triggering results in improved arterial-tovenous contrast. (johnshopkins.edu)
It increases arterial enhancement or enables MR angiograms to be obtained with less contrast material. (johnshopkins.edu)
Contrast studies are most useful for imaging arterial insufficiency. (medscape.com)
Each frame illustrates a single time point in the full-phase angiography sequence: baseline, arterial, microvascular, venous and residual, from a patient undergoing off-pump coronary artery bypass. (medscape.com)
Angiography is the standard imaging approach for detecting fibromuscular dysplasia/arterial stenoses and aneurysms. (medscape.com)

Time-resolved contrast-enhanced MRA methods that allow a dynamic visualization of the contrast bolus passage through the cerebral vessels have shown to be promising techniques for assessing DAVFs, in that these introduce the dimension of temporal resolution to the imaging work-up. (ajnr.org)
A metabolic screen was negative, and cerebral angiography and MR scan of brain were normal. (bmj.com)
We also specialize in diagnostic cerebral and head and neck angiography and spinal angiography. (hopkinsmedicine.org)
Cerebral Angiography: Catheter. (msdmanuals.com)

Digital subtraction angiography (DSA) is the method of reference for imaging of dural arteriovenous fistula (DAVF). (ajnr.org)
Digital subtraction angiography (DSA) is the standard of reference for the diagnosis of dural arteriovenous fistula (DAVF) and for tailoring the appropriate treatment either by endovascular and/or surgical means. (ajnr.org)
Next, the Rim catheter was placed in the descending abdominal aorta just above the origin of the iliac arteries and 8-10 mL of contrast was used for digital subtraction. (aapc.com)
Digital subtraction angiography (DSA) is a technique that reduces artifacts by subtracting densities created by the overlying bony skull. (aao.org)
The use of digital subtraction technology has enhanced the ability to visualize vascular structures with smaller amounts of contrast dye. (aao.org)

With this technique, a catheter is placed intra-arterially and iodinated radiodense contrast dye is injected. (aao.org)
During angiography, a catheter is placed selectively via either the transjugular or transfemoral route into the hepatic vein to measure portal pressure. (medscape.com)

abstract = "BACKGROUND: Contrast-enhanced cardiovascular magnetic resonance angiography (CE-CMRA) is the established imaging modality for patients with Marfan syndrome requiring life-long annual aortic imaging before and after aortic root replacement. (fis-uhz.de)

This CME activity is designed to enhance the learner understanding of a recently developed, high spatial resolution coronary magnetic resonance angiography sequence, which has been validated in a cohort of patients with low-intermediate risk of coronary artery disease. (peachnewmedia.com)
1. Learners need to know about: Coronary magnetic resonance angiography, coronary artery disease, respiratory motion correction techniques, highly under sampled acquisition and reconstruction techniques. (peachnewmedia.com)

Taking DSA images as the standard of reference, the goal of this study was to systematically analyze findings of DAVFs using 3 different MR images, namely time-resolved 3D contrast-enhanced MRA (TR 3D MRA), T2-weighted MR images, and 3D TOF MRA in a consecutive series of patients with DAVFs before and/or after treatment. (ajnr.org)
These data support CO2 as an alternative supplemental contrast agent that can be applied safely and efficiently to lower contrast volume during peripheral vascular interventions preventing kidney dysfunction even in patients with disease of the popliteal artery and below the knee and CLI. (aston.ac.uk)
Contrast-induced encephalopathy should be considered in patients developing focal neurological deficits following coronary angiography. (bmj.com)
Application of mask images of contrast-enhanced MR angiography to detect carotid intraplaque hemorrhage in patients with moderate to severe symptomatic and asymptomatic carotid stenosis. (bvsalud.org)
In patients at increased risk for CIN, use contrast agents with lower osmolarity, and in the smallest possible quantities. (sciencedaily.com)
Monitor patients at increased risk for CIN very closely for up to 48 hours after a procedure that involved the use of contrast dye. (sciencedaily.com)
In fact, contrast dyes have helped us make enormous progress in the treatment of patients with blocked arteries. (sciencedaily.com)
Thirty patients with suspected pulmonary embolism (PE) underwent dual-energy spectral CTPA with low radiation and low contrast doses with scanning protocol of GSI-36 with 260 mA, and 25 mL contrast (350 mgI/mL) with 4.0ml/s injection speed. (brieflands.com)
Contrast-free CMRA techniques avoiding side-effects of contrast media are highly desirable for serial imaging but have not been evaluated in the postoperative setup of Marfan patients. (fis-uhz.de)
The purpose of this study was to assess the feasibility of non-contrast balanced steady-state free precession (bSSFP) magnetic resonance imaging for aortic monitoring of postoperative patients with Marfan syndrome.METHODS: Sixty-four adult Marfan patients after aortic root replacement were prospectively included. (fis-uhz.de)
An increase in signal that corresponded to the arrival of gadolinium was used to trigger three-dimensional, spoiled gradient-echo abdominal MR angiography in 50 adult patients. (johnshopkins.edu)
The authors now routinely use this technique for aortorenal imaging with a gadolinium-based contrast material dose of 20 mmol (40 mL) in patients who weigh more than 50 kg and 10 mmol (20 mL) in patients who weigh less than 50 kg. (johnshopkins.edu)
Time-of-flight (TOF) MRA is useful for patients who cannot tolerate iodinated contrast agents used in CTA. (medscape.com)
The patients were already candidates for CT angiography with contrast for conditions other than hepatobiliary diseases. (bvsalud.org)
Elle a inclus 50 patients soit 54 oreilles opérées pour otospongiose, explorés en préopératoire par une tomodensitométrie (TDM) des rochers et en postopératoire par des audiogrammes. (bvsalud.org)
The association between nutritional risk and contrast-induced acute kidney injury in patients undergoing coronary angiography: a cross-sectional study. (cdc.gov)
For many the relationship between traditional and years, the bile pigment was considered as non-traditional biomarkers of CAD in coro- a toxic waste product formed during haem nary angiography patients and in apparently catabolism. (who.int)

CT image obtained after the intravenous administration of contrast material shows a large embolus at the distal aspect of the right pulmonary artery, with extension into its branches. (medscape.com)
Intravenous fluo rescein angiography showed no evidence of choroidal neovascularization . (medscape.com)
Evaluation of amount of intravenous contrast medium in relation to radiation dose 8, 9 . (lu.se)

17 - 21 However, the projective nature of 2D images harbors several drawbacks, such as the necessity of repeated injections of contrast media in separately acquired planes, signal intensity cancellations along the slab, and superimposition of different vessels. (ajnr.org)
Although HFU has exhibited adequate resolution to monitor things like tumor growth in the skin layers, on its own it lacks the depth and contrast necessary for imaging blood vessels. (wikipedia.org)
Acoustic angiography overcomes the weaknesses of HFU by combining contrast-enhanced ultrasound with the use of a dual-element ultrasound transducer to achieve high resolution visualization of blood vessels at relatively deep penetration levels. (wikipedia.org)
Acoustic angiography is performed by first injecting specially designed microbubbles with a low resonant frequency into the vessels. (wikipedia.org)
Finally, a high-frequency transducer with high resolution is used to measure the super-harmonic frequencies, effectively removing any background signal from the microbubble signal, and allowing the vessels to be visualized Angiography, or the examination of blood vessels, is essential in many areas of research and clinical practice. (wikipedia.org)
In particular, angiography is needed to monitor angiogenesis, which is the growth and development of new blood vessels. (wikipedia.org)
In both cases, angiography is essential for measuring the growth, recession, or shape of blood vessels in-vivo over time during these treatments and related research Currently, the most common techniques used for angiography are X-ray CT and MRI. (wikipedia.org)
MRI angiography provides the highest resolution of the current angiographic methods and can often be performed without the use of contrast agents by modifying the pulse sequence to visualize aspects of the vessels such as blood flow. (wikipedia.org)
Contrast dye is essential for many diagnostic and interventional cardiovascular procedures because it enables doctors to visualize blocked blood vessels, said Dr. Marc J. Schweiger, lead author of the SCAI consensus document. (sciencedaily.com)
The contrast makes blood vessels appear transparent so blood flow can be assessed. (dukehealth.org)
Angiography (also known of arteriography) is an imaging technique that uses X-ray with contrast to produce images of the blood vessels. (hopkinsmedicine.org)
In angiography, x-rays are used to produce detailed images of blood vessels. (msdmanuals.com)
During angiography, doctors can also treat disorders of blood vessels. (msdmanuals.com)
The contrast agent flows through the blood vessels and outlines them. (msdmanuals.com)
The blood flow in the vessels is used to generate image contrast. (lu.se)
Other: CTA with iodine contrast in preoperative perforator vessels mapping for deep inferior epigastric perforator (DIEP) flap breast reconstruction planning. (who.int)
Other: Non-contrast MRA in preoperative perforator vessels mapping for deep inferior epigastric perforator (DIEP) flap breast reconstruction planning. (who.int)

A specific branch of contrast-enhanced ultrasound, acoustic angiography is a minimally invasive and non-ionizing medical imaging technique used to visualize vasculature. (wikipedia.org)

Ever since the introduction of contrast-enhanced MR angiography in the mid-1990s, there has been steady improvement in the technique. (elsevierpure.com)
The feasibility of using such non-contrast-enhanced 4D technique for intracranial MRA was validated from consecutive volunteer studies. (ismrm.org)
Non-contrast enhanced, EKG-triggered, navigator 3D-SSFP magnetic resonance angiography (NCE-MRA) is a robust technique but suffers from long scan acquisition times. (biomedcentral.com)

Carbondioxide-Aided Angiography Decreases Contrast Volume and Preserves Kidney Function in Peripheral Vascular Interventions. (aston.ac.uk)
We analyzed 191 consecutive interventions of the lower extremity in claudicants and critical limb ischemia (CLI) that were performed with iodinated contrast media (ICM) alone (n = 154) or with the aided or exclusive use of CO2 (n = 37). (aston.ac.uk)
Dive into the research topics of 'Carbondioxide-Aided Angiography Decreases Contrast Volume and Preserves Kidney Function in Peripheral Vascular Interventions. (aston.ac.uk)
The consensus document, the first to be written on this topic, appears in the January 2007 issue of Catheterization and Cardiovascular Interventions: Journal of the Society for Cardiovascular Angiography and Interventions. (sciencedaily.com)
Headquartered in Washington, DC, the Society for Cardiovascular Angiography and Interventions is a 3,700-member professional organization representing invasive and interventional cardiologists. (sciencedaily.com)

Low tal with chest pain and underwent coronary serum bilirubin concentrations have been angiography. (who.int)

Angiography has been used in the research, diagnosis, and treatment of many of these disorders. (wikipedia.org)

This allows high contrast, 3D, high spatial resolution images to be acquired. (fujifilm.com)

Contrast-enhanced MRA using a gadolinium MR agent offers improved visualization in areas of high-grade stenosis where TOF MRA may falsely indicate a short-segment occlusion. (medscape.com)

An artery occlusion may be missed with magnetic resonance imaging if magnetic resonance angiography is not performed. (springer.com)

Carotid CT angiography (CTA) is a commonly performed imaging study in stroke centers. (medscape.com)

However, limitations include invasive complications, iodine based contrast agents and ionising radiation. (peachnewmedia.com)

catheter-based angiography can provide concurrent endovascular therapy. (medscape.com)

The information provided by CT angiography facilitated rapid identification of the pseudoaneurysm and treatment with embolization. (ajnr.org)
CT angiography may be helpful before embolization in cases of hemorrhage in head and neck cancer. (ajnr.org)
The patient was referred to the interventional neuroradiology unit for angiography and embolization because of uncontrolled oral bleeding around the packing material. (ajnr.org)

The opportunity to combine both full-phase angiography and perfusion into a single, real-time assessment of physiology makes this approach unique and unprecedented. (medscape.com)

Lin, K 2009, ' Administration of gadolinium-based contrast agents in MR angiography ', American Journal of Roentgenology , vol. 192, no. 4, pp. (northwestern.edu)
Coronary magnetic resonance angiography (CMRA) is a potential safe alternative which could be performed with or without gadolinium contrast agents. (peachnewmedia.com)
A contrast material called gadolinium may be injected into a vein before the scan to help see details better. (cancer.org)
CIEDs and gadolinium-based contrast agents pas passer ce type d'examen pour des raisons de s ecurit e. (bvsalud.org)

By using microbubbles as a contrast agent and a dual-element transducer for signal identification, acoustic angiography achieves depth, vessel contrast, and resolution not possible with other ultrasound techniques. (wikipedia.org)
The purpose of our study was to compare the vessel area measurement in Time-of-Flight (TOF) MR angiography (MRA), contrast-enhanced MRA (ceMRA) and CTA after transplantation of mesenchymal stem cells (MSCs) in an animal PAD model. (biomedcentral.com)
The contrast dye outlines the column of flowing blood within the injected vessel and demonstrates stenosis, aneurysms, vascular malformations, flow dynamics, and vessel wall irregularities such as dissections or vasculitis. (aao.org)

The purpose of this study is to look at a contrast-enhanced MR angiography method in comparison to current methods. (mayo.edu)

Angiography is an imaging test that uses x-rays and a special dye to see the insides of the arteries. (medlineplus.gov)
[5] TTE can visualize non-dilated coronary arteries and measure coronary artery flow using harmonic imaging, contrast agents, and high-frequency transducers. (wikipedia.org)
The CT attenuation and standard deviation (SD) values of the main, right, left, right lower and left lower pulmonary arteries and the back muscle at the same level were measured on 60 - 80 keV images, and signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated and analyzed. (brieflands.com)
The diagnostic and prognostic information available from captopril renography and the increasing availability of magnetic resonance angiography (MRA) have reduced the use of renal arteriography as a diagnostic tool, except in evaluating kidneys with intrarenal branch-artery stenoses and those with complex vascular anatomy, including multiple accessory arteries. (medscape.com)
Contrast-enhanced axial CT images show several narrowings of the common and proper hepatic arteries with intervening aneurysmal dilatation. (medscape.com)
The video shows MRI angiography where the arteries of the brain are made white. (lu.se)

Typically temporal and spatial resolutions have to be traded in order to synchronize data acquisition to the short first pass of contrast agent. (ismrm.org)
The contrast-enhanced method can generate images with more spatial detail and can be used to view a much larger region of the patient's body than is presently possible. (mayo.edu)

We investigated the safety and efficacy of carbon dioxide (CO2) as supplemental contrast agent to decrease contrast volume during fluoroscopy-guided peripheral vascular procedures in routine angiological practice. (aston.ac.uk)

Subsequent image processing on μCT data allowed for the quantification of the caliber of pulmonary vasculature without the need for external contrast agents. (excillum.com)
Contrast-enhanced, time-resolved three-dimensional (4D) MRA has been widely used to exam the anatomical and dynamic flow information of vasculature. (ismrm.org)

In this work, a non-contrast-enhanced MRA sequence was implemented. (ismrm.org)

RESULTS: Increased saline chaser flow rates or increased saline chaser volumes resulted in increased pulmonary and aortic peak contrast enhancement. (maastrichtuniversity.nl)
A time-enhancement curve of the cephalic vein showed that the early effects of the saline chaser involved clearing the vein and pushing the contrast medium to the central circulation. (maastrichtuniversity.nl)
The use of more viscous chaser fluids does not improve contrast enhancement. (maastrichtuniversity.nl)
contrast enhancement (Figure 1). (who.int)

Diagnostic guidelines for initial imaging for fibromuscular dysplasia are available from the American College of Radiology (ACR) and note that CT angiography (CTA) with IV contrast, magnetic resonance angiography with and without IV contrast, and arteriography are usually appropriate for initial imaging, and duplex Doppler ultrasonography and intravascular ultrasonography may be appropriate. (medscape.com)

2. Learners need to know how to apply: Coronary artery assessment, coronary magnetic resonance angiography described in this topic. (peachnewmedia.com)
Aim: To assess the accuracy of low-dose contrast-enhanced time-resolved 3 T magnetic resonance angiography (MRA) for the morphological and functional assessment of vascular malformations (VM), and to evaluate its diagnostic potential for the depiction of treatment-induced changes. (unica.it)

Our experts have extensive experience in angiography of the head and neck, including the brain, and the spine. (hopkinsmedicine.org)

The use of parallel imaging algorithms has enabled the development of 3D contrast-enhanced MRA techniques with high temporal resolution. (ajnr.org)

The procedure had been prolonged, and during it she had received 130 mL of iopromide contrast. (bmj.com)
Before the angiography procedure, people are usually asked to refrain from eating and drinking for 12 hours. (msdmanuals.com)
Before angiography, people are often given a sedative intravenously to help them relax and remain calm, but they remain conscious during the procedure. (msdmanuals.com)

The contrast medium application was followed by a 10-mL saline chaser at different injection rates (0, 2.7, 4, 6, and 8 mL/s) or by different saline chaser volumes (0, 5, 10, and 15 mL) at a flow rate of 4 mL/s. (maastrichtuniversity.nl)
Because contrast dyes can also decrease kidney blood flow, the two agents should not be given concurrently. (sciencedaily.com)
Contrast agents with lower osmolarity are less dense and, therefore, less likely to interfere with blood flow to the kidneys. (sciencedaily.com)
VASC-ASL is a non-contrast MRA imaging function that uses 3D BASG (Balanced SARGE) to visualize the blood flow labelled with IR pulses. (fujifilm.com)
An MRV uses contrast to assess blood flow. (dukehealth.org)

MRA produces excellent contrast-enhanced angiograms without the risk of iodinated compounds and radiation exposure. (medscape.com)

Radiopaque Contrast Agents During imaging tests, contrast agents may be used to distinguish one tissue or structure from its surroundings or to provide greater detail. (msdmanuals.com)

As interventionalists, we work with contrast media every day, so it is crucial that we know how to avoid CIN, with its associated morbidity and mortality. (sciencedaily.com)

The first reported use of an ultrasound contrast agent was by Dr. Raymond Gramiak and Pravin Shah in 1968, when they injected saline into the aortic root of the heart and observed increased contrast. (wikipedia.org)

the condition is estimated to occur in 1--3 percent of individuals who undergo interventional cardiovascular procedures in which contrast dyes are used. (sciencedaily.com)

Angiography may take less than an hour or several hours, depending on the area of the body being evaluated and the type of the examination or procedures being done. (msdmanuals.com)

Standard precautions with regard to contrast allergy history and renal function are taken. (medscape.com)
PVD often coexists with risk factors for contrast-induced renal failure. (medscape.com)

The goal of this study was to analyze the value of different MR images including 3D contrast-enhanced MR angiography (MRA) with a high temporal resolution in diagnostic and follow-up imaging of DAVFs. (ajnr.org)
The 65 keV monochromatic images provided the highest SNR, CNR and subjective scores with the lowest image noise in dual-energy spectral CTPA with low contrast dosage. (brieflands.com)
Magnetic resonance angiography (MRA) In magnetic resonance imaging (MRI), a strong magnetic field and very high frequency radio waves are used to produce highly detailed images. (msdmanuals.com)
Angiography can provide still images or motion pictures (called cineangiography). (msdmanuals.com)
Evaluation of clinical applications for dual energy CT 4 , such as virtual non-contrast-enhanced images 5 , virtual monochromatic images, and material composition of various tissues 6 (Figure 4). (lu.se)

Anatomy39

Diseases78

Chemicals and Drugs20

Analytical, Diagnostic and Therapeutic Techniques and Equipment100

Psychiatry and Psychology1

Phenomena and Processes16

Disciplines and Occupations2

Technology, Industry, Agriculture1

Information Science7

Health Care20

Conventional5

Cardiac4

Nephropathy7

Tomography15

Noninvasive1

Pulmonary angiography3

CCTA1

Arterial12

Cerebral4

Digital subtraction5

Catheter is placed2

Abstract1

Coronary Artery2

Patients17

Intravenous3

Vessels17

Minimally invasive1

Technique3

Interventions5

Underwent1

Diagnosis1

High spatial resolution1

Visualization1

Occlusion1

Carotid1

Iodine1

Endovascular1

Embolization3

Perfusion1

Gadolinium4

Vessel3

Methods1

Arteries6

Spatial2

Efficacy1

Vasculature2

Sequence1

Enhancement4

Ultrasonography1

Assessment2

Head and neck1

Algorithms1

Procedure3

Flow5

Angiograms1

Tissue1

Media1

Aortic1

Cardiovascular1

Examination1

Renal2

Images5