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 'Dynamic Scanning' 
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Result : Searchterm 'Dynamic Scanning' found in 1 term [] and 2 definitions [], (+ 2 Boolean[] results
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Dynamic Scanning
Fast gradient echo sequences are used to study dynamic processes with time periods on the order of a second and allow continuous monitoring of most physiologic motions. A common use of dynamic scanning is the investigation of the time course of tissue contrast after injection of a paramagnetic contrast agent.

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Further Reading:
Real-time MRI: recent advances using radial FLASH
Wednesday, 4 April 2012   by    
  News & More:
Optimal k-Space Sampling for Dynamic Contrast-Enhanced MRI with an Application to MR Renography
Thursday, 5 November 2009   by    
MRI Scans May Improve PCa Recurrence at Low PSA Levels
Tuesday, 3 May 2011   by    
RSNA: Three Time-Point, Dynamic, Contrast-Enhanced Magnetic Resonance Imaging Can Help Rule Out Prostate Cancer
Tuesday, 2 December 2003   by    
Average arterial input function for quantitative dynamic contrast enhanced magnetic resonance imaging of neck nodal metastases
Tuesday, 7 April 2009   by    
MRI Resources 
Crystallography - Developers - Mobile MRI - Safety Training - Cochlear Implant - Cardiovascular Imaging
Contrast Enhanced MRIInfoSheet: - Contrast Agents - 
Intro, Overview, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Enhanced MRI -
Contrast enhanced MRI is a commonly used procedure in magnetic resonance imaging. The need to more accurately characterize different types of lesions and to detect all malignant lesions is the main reason for the use of intravenous contrast agents.
Some methods are available to improve the contrast of different tissues. The focus of dynamic contrast enhanced MRI (DCE-MRI) is on contrast kinetics with demands for spatial resolution dependent on the application. DCE-MR imaging is used for diagnosis of cancer (see also liver imaging, abdominal imaging, breast MRI, dynamic scanning) as well as for diagnosis of cardiac infarction (see perfusion imaging, cardiac MRI). Quantitative DCE-MRI requires special data acquisition techniques and analysis software.
Contrast enhanced magnetic resonance angiography (CE-MRA) allows the visualization of vessels and the temporal resolution provides a separation of arteries and veins. These methods share the need for acquisition methods with high temporal and spatial resolution.
Double contrast administration (combined contrast enhanced (CCE) MRI) uses two contrast agents with complementary mechanisms e.g., superparamagnetic iron oxide to darken the background liver and gadolinium to brighten the vessels. A variety of different categories of contrast agents are currently available for clinical use.
Reasons for the use of contrast agents in MRI scans are:
Relaxation characteristics of normal and pathologic tissues are not always different enough to produce obvious differences in signal intensity.
Pathology that is sometimes occult on unenhanced images becomes obvious in the presence of contrast.
Enhancement significantly increases MRI sensitivity.
In addition to improving delineation between normal and abnormal tissues, the pattern of contrast enhancement can improve diagnostic specificity by facilitating characterization of the lesion(s) in question.
Contrast can yield physiologic and functional information in addition to lesion delineation.
Imaging of arteries and veins with contrast enhanced angiography (CE MRA).

Common Indications:
Brain MRI : Preoperative/pretreatment evaluation and postoperative evaluation of brain tumor therapy, CNS infections, noninfectious inflammatory disease and meningeal disease.
Spine MRI : Infection/inflammatory disease, primary tumors, drop metastases, initial evaluation of syrinx, postoperative evaluation of the lumbar spine: disk vs. scar.
Breast MRI : Detection of breast cancer in case of dense breasts, implants, malignant lymph nodes, or scarring after treatment for breast cancer, diagnosis of a suspicious breast lesion in order to avoid biopsy.

For Ultrasound Imaging (USI) see Contrast Enhanced Ultrasound at See also Blood Pool Agents, Myocardial Late Enhancement, Cardiovascular Imaging, Contrast Enhanced MR Venography, Contrast Resolution, Dynamic Scanning, Lung Imaging, Hepatobiliary Contrast Agents, Contrast Medium and MRI Guided Biopsy.

Images, Movies, Sliders:
 Delayed Myocardial Contrast Enhancement from Infarct  Open this link in a new window

Courtesy of  Robert R. Edelman
 Left Circumflex Ischemia First-pass Contrast Enhancement  Open this link in a new window

Courtesy of  Robert R. Edelman

 Normal Lung Gd Perfusion MRI  Open this link in a new window
 MRI of the Brain Stem with Temoral Bone and Auditory System  Open this link in a new window
SlidersSliders Overview

 Breast MRI Images T1 Pre - Post Contrast  Open this link in a new window
Radiology-tip.comContrast Enhanced Computed Tomography
Radiology-tip.comContrast Enhanced Ultrasound,  Contrast Enhanced Doppler Imaging

• View the DATABASE results for 'Contrast Enhanced MRI' (14).Open this link in a new window

• View the NEWS results for 'Contrast Enhanced MRI' (8).Open this link in a new window.
Further Reading:
Optimal k-Space Sampling for Dynamic Contrast-Enhanced MRI with an Application to MR Renography
Thursday, 5 November 2009   by    
Background MRI Enhancement Up in Premenopausal Breast Cancer
Friday, 7 June 2013   by    
Bringing innovative technologies together
Monday, 18 November 2013   by    
  News & More:
MRI Contrast Agent Analysis from Bruker
Sunday, 11 August 2013   by    
CMC Contrast Granted Orphan Drug Designation by the FDA for its Liver Specific MRI Contrast Media CMC-001
Wednesday, 27 November 2013   by    
All-organic MRI Contrast Agent Tested In Mice
Monday, 24 September 2012   by    
A groundbreaking new graphene-based MRI contrast agent
Friday, 8 June 2012   by    
Novel Imaging Technique Improves Prostate Cancer Detection
Tuesday, 6 January 2015   by    
New oxygen-enhanced MRI scan 'helps identify most dangerous tumours'
Thursday, 10 December 2015   by    
MRI Resources 
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Primovist™InfoSheet: - Contrast Agents - 
Intro, Overview, 
Types of, 
etc.MRI Resource Directory:
 - Contrast Agents -
Primovist™ (U.S brand name Eovist®) is a highly specific MRI contrast agent for the imaging, detection and characterization of liver conditions, including liver tumors, cysts, as well as other malignant and benign lesions. It is a water-soluble ethoxybenzyl derivative of Gd-DTPA. This compound is taken up by the hepatocytes (approximately 30% of the dose goes to the hepatocytes) and is equally excreted renal and biliary in humans.
Primovist™ brightens the signal of T1 weighted MR images immediately after contrast administration. Dynamic scanning and imaging of the accumulation phase (best after 20 min.) can also be performed after bolus injection of Primovist™. The hepatocytes uptake will increase the signal intensity of normal liver parenchyma. This results in improved lesion-to-liver contrast because malignant tumors (metastases, the majority of hepatocellular carcinomas) do not contain either hepatocytes or their functioning is hampered.
WARNING: Gadolinium-based contrast agents increase the risk for nephrogenic systemic fibrosis (NSF) in patients with acute or chronic severe renal insufficiency (glomerular filtration rate less than 30 mL/min/1.73m2), or acute renal insufficiency of any severity due to the hepato-renal syndrome or in the perioperative liver transplantation period.

Drug Information and Specification
NAME OF COMPOUND Gadoxetic acid disodium, Gd-EOB-DTPA
DEVELOPER Bayer Schering Pharma AG
CONTRAST EFFECT T1, Predominantly positive enhancement
RELAXIVITY Short T1-relaxation time
PHARMACOKINETIC 50% hepatobiliary, 50% renal excretion
OSMOLALITY 884 mosm/kgH2O
DOSAGE 12,5 - 25 µmol/kg
PREPARATION Finished product
INDICATION Liver lesions

Distribution Information
USA, Canada Eovist® for sale Bayer HealthCare Pharmaceuticals
EU Primovist™ for sale Bayer Schering Pharma AG


• View the DATABASE results for 'Primovist™' (7).Open this link in a new window

Further Reading:
New MRI liver contrast agent Primovist® approved in EU
Thursday, 30 September 2004   by    
New MRI Liver Contrast Medium
Wednesday, 13 October 2004   by    
Important Drug Warning for Gadolinium-Based Contrast Agents
Wednesday, 12 September 2007   by    
  News & More:
Searchterm 'Dynamic Scanning' was also found in the following service: 
News  (2)  
Breast MRIMRI Resource Directory:
 - Breast MRI -
(MR mammography) Magnetic resonance imaging of the breast is particularly useful in evaluation of newly diagnosed breast cancer, in women whose breast tissue is mammographically very dense and for screening in women with a high lifetime risk of breast cancer because of their family history or genetic disposition.
Breast MRI can be performed on all standard whole body magnets at a field strength of 0.5 T - 1.5 Tesla. Powerful gradient strengths over 15 mT/m will help to improve the balance between spatial resolution, scanning speed, and volume coverage. The use of a dedicated bilateral breast coil is obligatory.
Malignant lesions release angiogenic factors that increase local vessel density and vessel permeability. Breast cancer is detectable due to the strong enhancement in dynamic breast imaging that peaks early (about 1-2 min.) after contrast medium injection. If breast cancer is suspected, a breast biopsy may be necessary to secure the diagnosis.
See also Magnetic Resonance Imaging MRI, Biopsy and MR Guided Interventions.

Requirements in breast MRI procedures:
Both breasts must be measured without gaps.
Temporal resolution should be sufficient to allow early imaging after contrast agent with dynamic imaging every 60-120 sec.
For the best possible detection of enhancement fat signal should be eliminated either by image subtraction or by spectrally selective fat saturation.
Thin slices are necessary to assure absence of partial volume effects.
Imaging should be performed with a spatial resolution in plane less than 1 mm.

For Ultrasound Imaging (USI) see Breast Ultrasound at

See also the related poll result: 'MRI will have replaced 50% of x-ray exams by'
Images, Movies, Sliders:
 Breast MRI Images T2 And T1  Open this link in a new window
 Breast MRI Images T2 And T1 Pre - Post Contrast  Open this link in a new window
 Breast MRI Images T1 Pre - Post Contrast  Open this link in a new window
Radiology-tip.comMammography,  Breast Imaging
Radiology-tip.comBreast Ultrasound

• View the DATABASE results for 'Breast MRI' (13).Open this link in a new window

• View the NEWS results for 'Breast MRI' (41).Open this link in a new window.
Further Reading:
New Screening Guidelines for Women at High Risk for Breast Cancer
Wednesday, 26 September 2007   by    
MRI Improves Breast Cancer Screening in Older BRCA Carriers
Monday, 5 January 2015   by    
  News & More:
Researchers to develop new hybrid PET/MRI system for improved breast cancer diagnosis
Wednesday, 27 January 2016   by    
Additional Breast Cancer Tumors Found on MRI After Mammography May Be Larger, More Aggressive
Wednesday, 9 December 2015   by    
Preoperative MRI May Overdiagnose Contralateral Breast Cancer
Wednesday, 2 December 2015   by    
MRI Better Detects Recurrent Breast Cancer
Friday, 15 August 2014   by    
7-Tesla MRI scanner allows even more accurate diagnosis of breast cancer
Thursday, 6 March 2014   by    
BI-RADS and breast MRI useful in predicting malignancy
Wednesday, 30 May 2012   by    
MRI Resources 
NMR - Anatomy - Coils - PACS - Equipment - RIS
Intera 1.0T™InfoSheet: - Devices -
Types of Magnets, 
etc.MRI Resource Directory:
 - Devices -
From Philips Medical Systems; the Intera-family offers with this mid field system maximum efficiency, flexibility and performance. All Philips MR products contain SENSE (coil SENSitivity Encoding) technology - that increases scanning speed.

Device Information and Specification
CONFIGURATION Short bore compact
SURFACE COILS Standard: head, body, C1, C3; Optional: Small joint, flex-E, flex-R, endocavitary (L and S), dual TMJ, knee, neck, T/L spine, breast; Optional phased array: Spine, pediatric, 3rd party connector, Optional SENSE Coils: Flex-S-M-L, Flex Body, Flex Cardiac,
SYNCHRONIZATION ECG/peripheral: Optional/yes, respiratory gating
PULSE SEQUENCES SE, Modified-SE, IR (T1, T2, PD), STIR, FLAIR, SPIR, FFE, T1-FFE, T2-FFE, Balanced FFE, TFE, Balanced TFE, Dynamic, Keyhole, 3D, Multi Chunk 3D, Multi Stack 3D, K Space Shutter, MTC, TSE, Dual IR, DRIVE, EPI, Cine, 2DMSS, DAVE, Mixed Mode; Angiography: Inflow MRA, TONE, PCA, CE MRA
IMAGING MODES Single Slice 2D , Multi Single Slice 2D, Multi Slice 2D, 3D, Multi Chunk 3D, Multi Stack 3D
TR Min. 2.9 (Omni) msec, 1.6 (Power) msec
TE Min. 1.0 (Omni) msec, 0.7 (Power) msec
SINGLE/MULTI SLICE RapidView Recon. greater than 500 @ 256 Matrix
FOV Max. 53 cm
SLICE THICKNESS 0.1 mm(Omni), 0.05 mm (Power)
DISPLAY MATRIX 128 x 128, 256 x 256,512 x 512,1024 x 1024 (64 for Bold img)
MEASURING MATRIX Variable in 1% increments
PIXEL INTENSITY Lum.: 120 cd/m2; contrast: 150:1
SPATIAL RESOLUTION Variable (op. param. depend.)
MAGNET TYPE Superconducting
or W x H
60 x 60 cm
H*W*D 240 x 188 x 157 cm
CRYOGEN USE 0.03 L/hr helium
STRENGTH 23 mT/m (Omni), 30 (Power) mT/m
5-GAUSS FRINGE FIELD 2.3 m / 3.3 m
SHIMMING Passive and dynamic

• View the DATABASE results for 'Intera 1.0T™' (2).Open this link in a new window

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