The present invention relates to a knee coil detachment apparatus of a magnetic resonance imaging apparatus which detaches an upper coil and a lower coil of a knee coil by only rotating a knob. The desorption apparatus is coupled to the pin guide shaft 30 and the rotary guide groove (30) freely rotated in the guide guide half groove 32 is formed inside the border between the upper coil 10 and the lower coil 20 And a knob 40 on which a locking protrusion 42 is formed. Accordingly, the mounting and detachment of the upper coil and the lower coil are freed only by the rotation of the knob to facilitate the operator's convenience, and provide the patient with a comfortable shooting and a post-capture environment.
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