Look-up table (LUT) for Sentimag and Sienna, relation between magnetic readout (counts) and iron content

After injection of a magnetic tracer (Sienna+®, Endomagnetics ltd. UK), Sentimag® (Endomagnetics ltd. UK) is used as a magnetic handheld device to detect first draining lymph node(s) from from a primary tumor, referred to as sentinel lymph node. This dataset represents a look-up table (LUT) for Sentimag handheld probe, based upon Sienna+® samples. This LUT can be used to assess the amount of iron in dissected SLNs based tupon the magnetic readout (counts) Sentimag®. <br>The LUT was defined by acquiring six repeated magnetic measurements for ten 35µL Sienna+® samples with iron amount varying 1 – 504 µg (1.12µg, 5.04µg, 10.08µg, 28µg, 50.4µg, 100.8µg, 140µg, 280µg, 420µg and 504µg). A first order polynomial-fit is used to interpolate the relation between counts and iron content (in-house developed software using Matlab environment, R2020a, Mathworks, Inc., Natick, MA). The first column (A) of the data represents the iron content (µg), the corresponding counts for setting 1, 2 and 3 can be are found in the following columns respectively, B, C and D.

在注射磁性示踪剂（Sienna+®，英国Endomagnetics有限公司出品）后，可使用Sentimag®（英国Endomagnetics有限公司出品）这款手持式磁性设备，检测源自原发肿瘤的第一枚引流淋巴结，即前哨淋巴结（sentinel lymph node）。本数据集为基于Sienna+®样本的Sentimag®手持式探头查找表（look-up table, LUT）。该查找表可基于Sentimag®的磁性读数（计数），评估解剖获取的前哨淋巴结中的铁含量。
本查找表的构建方式为：对10份体积为35µL的Sienna+®样本开展6次重复磁性测量，样本中铁含量覆盖1–504 µg（具体取值为1.12µg、5.04µg、10.08µg、28µg、50.4µg、100.8µg、140µg、280µg、420µg及504µg）。研究采用一阶多项式拟合构建计数与铁含量之间的插值关系，所用软件为基于Matlab R2020a环境（美国MathWorks公司，马萨诸塞州内蒂克市）开发的自研软件。
数据集的第一列（A列）代表铁含量（单位：µg），对应仪器设置1、2、3的计数分别位于后续的B、C、D列中。