Siemens has completed a detailed technical investigation of the issue and revealed a device malfunction.The order of the orientation labels "head", "center", and "feet" in the axial thick slice segments are erroneously swapped in the following two cases: if the recon parameter "image order" is changed by the user from the default setting "head to feet" to "feet to head", or if the recon parameter "mirroring" is changed by the user from the default setting "none" to any other value, this influences the parameter "image order", which is switched from the default setting "head to feet" to "feet to head" so that the above condition applies.As a result, the head segment may mistakenly be labeled as "feet" and vice versa.If the user does not use anatomic landmarks and/or the shown images, and only focuses on the wrong orientation labels to determine the direction in which the needle must be tilted (towards the head or towards the feet), this could lead to the incorrect placement and angulation of the needle, resulting in potential unwanted damage to sensitive anatomical structures.Siemens is currently working on a permanent solution for this malfunction and the solution will be distributed as a software update.As an immediate action, siemens has distributed a customer safety advisory notice to address this error to all users of the affected application licenses.This action was reported to the fda according to 21cfr806 on(b)(6)2022, under report number 2240869-12/22/2022-0022-c (res#91481, ct083/22/s).
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