Development of a micromanometer-tip catheter to record high-fidelity pressures during cine-gated NMR without significant image distortion.
We report a new micromanometer-tip catheter to record high-fidelity pressures during cine-gated gradient echo NMR imaging in an intact animal model. Of the various metals and alloys tested for use in its construction, brass produced the smallest NMR artifact with minimal magnification. With the use of this new catheter design, there was little signal loss and no distortion of endocardial borders during imaging.
Dell'Italia
L J
LJ
Department of Medicine, University of Alabama, Birmingham 35294.
Carter
B
B
Millar
H
H
Pohost
G M
GM
D000497:Alloys; D000535:Aluminum; D000818:Animals; D001794:Blood Pressure / Q000502:physiology*; D006328:Cardiac Catheterization / Q000295:instrumentation*; D002858:Chromium Alloys; D003300:Copper; D004285:Dogs; D004867:Equipment Design; D015637:Gated Blood-Pool Imaging; D006321:Heart / Q000000981:diagnostic imaging / Q000502:physiology*; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008365:Manometry / Q000295:instrumentation*; D008961:Models, Structural; D010984:Platinum; D011522:Protons; D013635:Tantalum; D016277:Ventricular Function, Left / Q000502:physiology; D015032:Zinc
D000497:Alloys; D002858:Chromium Alloys; D011522:Protons; C048399:brass; D010984:Platinum; D013635:Tantalum; D003300:Copper; D000535:Aluminum; D015032:Zinc