MR imaging providing tissue/blood contrast image

Details MR imaging providing tissue/blood contrast image MR imaging providing tissue/blood contrast image

2007-08-07

2007-08-07

Smith, Ruth S. (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C324S307000, C324S309000

Reexamination Certificate

active

10635685

ABSTRACT:
A magnetic resonance imaging (MRI) system includes an ECG detector for the patient object being imaged and an element for performing an MRI pulse sequence. An imaging unit defined by the pulse sequence is longer in temporal length than one heart beat represented by the EGG signal. An MR signal is acquired from the object in response to the pulse sequence and an MR image based on the acquired MR signal is produced. A plurality of divided MT pulses can be applied instead of the conventional single MT pulse. In this case, an SE-system pulse sequence having a shorter echo train spacing is used, to generate sounds by applying gradient pulses incorporated in an imaging pulse sequence so as to automatically instruct a patient to perform an intermittent breath hold during three-dimensional scanning.

REFERENCES:
patent: 5335660 (1994-08-01), Dumoulin
patent: 2002/0169372 (2002-11-01), Miyazaki

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