BIOMAGNETIC MEASUREMENTS UTILIZING A SUPERPARAMAGNETIC MARKER - A FEASIBILITY STUDY

被引：3

作者：

MACRI, MA

DELGRATTA, C

DIDONATO, L

DILUZIO, S

ROMANI, GL

DELLAPENNA, S

PASQUARELLI, A

机构：

[1] UNIV G DANNUNZIO,IST TECNOL AVANZATE BIOMED,I-66013 CHIETI,ITALY

[2] CNR,IST ELETTRON STATO SOLIDO,I-00156 ROME,ITALY

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS | 1994年 / 16卷 / 05期

关键词：

D O I：

10.1007/BF02463731

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A preliminary study is here reported on a new potential marker for biomagnetic measurements. The marker consists of superparamagnetic polymer microspheres which were detected in the presence of external steady magnetic fields by means of an r.f.-SQUID magnetometer. The particles were prepared in samples differing in the concentration value and immersed in a homogeneous magnetic field of variable intensity. A simple model was taken into account for the distribution of the microspheres in the samples, so that the theoretical values were compared to the marker field values measured by the biomagnetic sensor. The overall sensitivity of the experimental apparatus and the minimum concentration value of the marker were then estimated.

引用

页码：425 / 432

页数：8

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