Makale detayı · 1996
Electrical impedance tomography induced current imaging achieved with a multiple coil system
- Yıl
- 1996
- Tür
- article
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- YÖKSİS dergi adı IEEE Transactions on Biomedical Engineering
- Katalog eşleşmesi (ISSN) IEEE Transactions on Biomedical Engineering
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
OpenAlex · İngilizce
An experimental study of induced-current electrical impedance tomography verifies that image quality is enhanced by employing six rather than three induction coils by increasing the number of independent measurements. However, with an increasing number of coils, the inverse problem becomes more sensitive to measurement noise. Using 16 electrodes to measure surface voltages, it is possible to collect 6 x 15 = 90 independent measurements. For comparison purposes, images of two-dimensional conductivity perturbations are reconstructed by using the data for three and six coils with the truncated pseudoinverse algorithm. By searching for the optimal truncation index that minimizes the noise error plus the resolution error, the signal-to-noise ratio of the data acquisition system was established as 58 db. Images obtained with this six-coil system reveal the sizes and locations of the conductivity perturbations. This system also provides images within the central region of the object space, a capability not achieved in previous experimental studies using only three circular coils. Nevertheless, the three-coil system can identify the conductivity perturbations near the periphery. However, it displays shifts in the locations and spread in the sizes of perturbations near the center of the object.
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Atıflar
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65 atıf
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Yerel katalogda bu makaleye atıf yapan 17 yayın (OpenAlex referans eşleşmesi; tam dünya listesi değildir).
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- Gradient-based electrical conductivity imaging using MR phase 2017
- Electrical conductivity imaging via contactless measurements 1999
- Electrical conductivity imaging via contactless measurements 1999
- Differential characterization of neural sources with the bimodal truncated SVD pseudo inverse for EEG and MEG measurements 1998
- Forward problem solution for electrical conductivity imaging via contactless measurements 1999
- Forward problem solution for electrical conductivity imaging via contactless measurements 1999
- Distinguishability analysis of an induced current EIT system using discrete coils 2000
- Optimal reference electrode selection for electric source imaging 1996
- Implementation of a data acquisition system for contactless conductivity imaging 2002