Image analysis – Applications – Biomedical applications
Reexamination Certificate
2011-03-29
2011-03-29
Bhatnagar, Anand (Department: 2624)
Image analysis
Applications
Biomedical applications
C378S004000, C250S338200, C430S039000
Reexamination Certificate
active
07916920
ABSTRACT:
A magnetic resonance tomograph is provided with a magnetic resonance system comprising at least two high-frequency transmitting/receiving units, each containing 1) a high-frequency transmitting/receiving coil, 2) a high-frequency current source that can be coupled to the high-frequency transmitting/receiving coil for transmitting, and 3) an amplifier that can be coupled to the high-frequency transmitting/receiving coil for receiving. A selector switch is provided, which keys a supply voltage to disconnect the amplifier during a transmission operation and the high-frequency current source during a receiving operation from the high-frequency transmitting/receiving coil. An inductor and a capacitor are provided between the high-frequency transmitting/receiving coil and the amplifier and form a series resonating circuit at the magnetic resonance frequency. A first diode is disposed between the selector switch and the capacitor of the series resonance circuit, and a second diode is disposed between the high-frequency current source and the high-frequency transmitting/receiving coil, such that the magnetic resonance system can be placed in a transmission mode by means of the selector switch, in that the first diode conducts and the high-frequency current source applies a high-frequency coil current to the high-frequency transmitting/receiving coil, and can be placed in a receiving mode, in that the second diode has high resistance and a voltage is applied to the amplifier from the high-frequency transmitting/receiving coil via the inductor and the capacitor.
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Kirilina Evgenia
Riemer Thomas
Seifert Frank
Bhatnagar Anand
Bundesrepublik Deustschland, vertreten durch das Bundesministeri
Universität Leipzig
Whitham Curtis Christofferson & Cook PC
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