Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate
2003-07-08
2009-11-10
Le, Long V (Department: 3768)
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
C600S413000, C600S407000
Reexamination Certificate
active
07616981
ABSTRACT:
There is provided an inspection apparatus using nuclear magnetic resonance which can execute multi-slice and multi-frame cardiac imaging of a heart without giving any load on a subject. An inspection apparatus using nuclear magnetic resonance has static magnetic field generation means generating a static magnetic field; magnetic field gradient generation means generating a magnetic field gradient in a first, a second and a third directions orthogonal to each other; radiofrequency magnetic field generation means generating a radiofrequency magnetic field; signal detection means detecting a nuclear magnetic resonance signal (echo) produced from a subject; arithmetic processing means performing arithmetic processing of the detected nuclear magnetic resonance signal; and control means controlling the magnetic field gradient generation means and the radiofrequency magnetic field generation means, wherein the control means executes a pulse sequence acquiring a projection to determine a similarity coefficient between the projection and a reference projection, thereby detecting respiratory motion of the subject.
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“NMR Igaku-Kiso to Rinsho”, published by Maruzen, 1991, pp. 144-145 → An imaging by ECG gating is described in this document.
United States Patent No. 5,363,844.
Ochi Hisaaki
Taniguchi Yo
Umemura Shin'ichiro
Antonelli, Terry Stout & Kraus, LLP.
Cheng Jacqueline
Hitachi Medical Corporation
Le Long V
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