The present invention provides a vertical magnetic field MRI apparatus which is capable of speeding up imaging for taking an image of any cross section of a wide area such as a total body, while suppressing increase of the number of channels and maintaining high sensitivity in a deep portion of a subject. A receiver coil unit 500 incorporates a bed coil unit 600 whose longitudinal direction agrees with a body axis direction of the test object 103, and an upper coil unit 700 which is detachably mounted on the bed coil unit 600. The bed coil unit 600 is provided with a carrying surface 601 for placing the test object 103 thereon and multiple lower sub-coils arranged in a lower part of the carrying surface 601, and the upper coil unit 700 is provided with multiple upper sub-coils which are connected to the lower sub-coils. The upper sub-coils are separated into two parts one arranged in a flexible inner support 20-1 covering the installation surface 601 and another arranged in a flexible outer support 20-2 covering the external side of the inner support 20-1. The upper sub-coils and the lower sub-coils are connected by mounting the upper coil unit 700 on the bed coil unit 600, thereby forming the multiple types of sub-coils.
