Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
122 participants
OBSERVATIONAL
2002-10-31
2011-09-30
Brief Summary
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Detailed Description
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1. Localization: Definition of standardized anatomic imaging planes with special respect to the right ventricle.
2. Morphological imaging: Optimization of spin-echo and gradient-echo sequences for various heart frequencies and breath-hold abilities. Investigation of the effect of various preparation pulses. Optimization of the signal-to-noise ratio for morphological cardiac imaging. Evaluation and optimization of various breathing and breath-hold (with and without navigator) ECG and pulse triggered sequences.
3. Cardiac and lung function: Optimization of gradient-echo sequences for various heart frequencies and breath-hold abilities. Evaluation of pulse-triggered function analysis and optimization of free breathing protocols. Optimization of tagging techniques. Evaluation of the pulsatile flow in lung vessels. Acquisition of age depended normal data of cardiac and lung function.
4. Coronary imaging: Definition of standardized anatomic imaging planes to monitor coronary arteries (single oblique, volume targeted). Optimization of acquisition window with respect to various heart frequencies. Evaluation of the influence of the position of the navigator and tracking factor on image quality. Optimization of a pulse triggered protocol. Evaluation of black-blood coronary imaging and visualization of the lumen and wall of coronary arteries.
5. Phase contrast techniques: Optimization of imaging planes, time resolution and spatial resolution of flow measurements in the heart, in the vessels around the heart, lung vessels and coronary arteries. Evaluation of retrospective and prospective gating with respect to the heart frequency. Evaluation of normal values in 1-dimensional, 2-dimensional and 3-dimensional time resolved flow measurements.
6. Single-Shot Imaging: Evaluation of signal intensity and stability of single shot techniques with and without preparation pulses. Optimization of real-time image acquisition.
7. Parallel acquisition and breath-hold time optimization: Evaluation of impact of echo-sharing and parallel acquisition on image quality. Optimization of short-breath-hold protocols.
Conditions
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Eligibility Criteria
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Inclusion Criteria
16 Years
ALL
Yes
Sponsors
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Medical University of Graz
OTHER
Responsible Party
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Ursula Reiter
PhD
Principal Investigators
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Gert Reiter, DI Dr.
Role: PRINCIPAL_INVESTIGATOR
Siemens Medical Solutions
Ursula Reiter, DI Dr.
Role: PRINCIPAL_INVESTIGATOR
University Hospital Graz
Locations
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Medical Unitersity Graz, Allgemeine Radiologische Diagnostik
Graz, Stmk, Austria
Countries
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References
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Reiter G, Reiter U, Bergmann P, Rienmuller R. MR imaging-based port placement planning for totally endoscopic coronary artery bypass grafting. Interact Cardiovasc Thorac Surg. 2004 Jun;3(2):341-5. doi: 10.1016/j.icvts.2004.01.015.
Reiter G, Reiter U, Rienmuller R, Gagarina N, Ryabikin A. On the value of geometry-based models for left ventricular volumetry in magnetic resonance imaging and electron beam tomography: a Bland-Altman analysis. Eur J Radiol. 2004 Nov;52(2):110-8. doi: 10.1016/j.ejrad.2003.10.003.
Reiter G, Reiter U, Kovacs G, Kainz B, Schmidt K, Maier R, Olschewski H, Rienmueller R. Magnetic resonance-derived 3-dimensional blood flow patterns in the main pulmonary artery as a marker of pulmonary hypertension and a measure of elevated mean pulmonary arterial pressure. Circ Cardiovasc Imaging. 2008 Jul;1(1):23-30. doi: 10.1161/CIRCIMAGING.108.780247.
Other Identifiers
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CMR-02-TECH-01
Identifier Type: -
Identifier Source: org_study_id