| Автор | F J McArdle |
| Автор | B H Brown |
| Автор | R G Pearse |
| Автор | D C Barber |
| Дата выпуска | 1988-11-01 |
| dc.description | An investigation is presented into the likely effects of the neonatal skull on impedance images produced by applied potential tomography (APT) by imaging impedance changes inside the skull of a human infant of occipito-frontal circumference 30 cm. Measurements have been made with the skull immersed in a tank of saline and electrodes fixed to the perimeter of the tank. Sensitivity measurements have been assessed for imaging a small target close to the centre of the skull as compared with images produced without the skull. The results obtained compare favourably with measurements on a more realistic model of the neonatal head constructed by filling the skull with agar jelly to leave only a thin exterior coating of jelly to simulate the scalp. These experiments suggest that in the central region of the head of a neonate, measured changes by the APT technique are about 44% of that expected from a homogeneous phantom, but that this might vary from 32% to 55% at different points in the image in a very complex manner. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The effect of the skull of low-birthweight neonates on applied potential tomography imaging of centralised resistivity changes |
| Тип | paper |
| DOI | 10.1088/0143-0815/9/4A/010 |
| Print ISSN | 0143-0815 |
| Журнал | Clinical Physics and Physiological Measurement |
| Том | 9 |
| Первая страница | 55 |
| Последняя страница | 60 |
| Аффилиация | F J McArdle; Dept. of Med. Phys. & Clinical Eng., R. Hallamshire Hospital, Sheffield Univ., UK |
| Аффилиация | B H Brown; Dept. of Med. Phys. & Clinical Eng., R. Hallamshire Hospital, Sheffield Univ., UK |
| Аффилиация | R G Pearse; Dept. of Med. Phys. & Clinical Eng., R. Hallamshire Hospital, Sheffield Univ., UK |
| Аффилиация | D C Barber; Dept. of Med. Phys. & Clinical Eng., R. Hallamshire Hospital, Sheffield Univ., UK |
| Выпуск | 4A |
