During magnetic resonance scanning when watching the blood oxygen level inside the patient, being the removal possible, the reusable optical fiber k bullhead (16,18,98,131,132), and, the hinge equipped finger clip on the patient (40,70,90,110,190) is connected to the SpO2 monitor. The finger clip (40,70,90,110,190), the hole (94,196) with, retention structure (44,95,198) with it includes, the fiber head (16,18,98,131,132) the connection part release is possibly installed in retention structure. At the same time the optical fiber head (16,18,98,131,132) it accepts retention structure, to flexible and the retention clip which the alignment is done (44,198), the slot (95) and the like it includes. You guarantee that the finger clip is not reused, in order in order to prevent the mutual infection between the patients with that, the optical fiber head in the end of the MR scanning arrangement (16,18,98,131,132) the removal the finger clip (40,70,90,110,190) to make unserviceable, retention structure (44,95,198) you can be deformation possible. Alternatively, the finger clip can be reusable in order and, the optical fiber head (16,18,98,131,132) to withstand repetitive installation and the removal, it can design the retention clip. In order to bring the slide insertion, compressed possible form or plastic layer is connected inside the clip part. The transparent layer which is installed in form or plastic layer (54), when the fact that light passes the form/plastic hole is allowed simultaneously, the optical fiber head (16,18,98,131,132) the fact that it touches the skin of the patient is prevented.磁気共鳴走査中に患者内の血液酸素レベルを監視するとき、取り外し可能で再使用可能な光ファイバケーブルヘッド(16,18,98,131,132)が、SpO2モニタに、並びに、患者上の蝶番付き指クリップ(40,70,90,110,190)に結合される。指クリップ(40,70,90,110,190)は、孔(94,196)と、保持構造(44,95,198)とを含み、ファイバヘッド(16,18,98,131,132)の結合部分は、保持構造に解放可能に取り付けられる。保持構造は、光ファイバヘッド(16,18,98,131,132)を可撓に受け入れ且つ位置合わせする保持クリップ(44,198)、スロット(95)等を含む。指クリップが再使用されないことを保証し、それによって、患者間の相互感染を防止するために、MR走査装置の端部での光ファイバヘッド(16,18,98,13
