Thorax mapping for localized lung impedance change using focused impedance measurement (FIM): A pilot study
, and | Dec 28, 2013
About this article
Article Category: Articles
Published Online: Dec 28, 2013
Page range: 57 - 61
Received: Dec 04, 2013
DOI: https://doi.org/10.5617/jeb.778
Keywords
© 2013 Humayra Ferdous, Tanvir Noor Baig, K. Siddique-e Rabbani, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Fig. 1
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Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Comparison of summed values between right and left sides, for three horizontal levels for 12 matrix elements, 22 to 45 of front plane and back plane
| Frontal Plane | Back Plane | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subject | Location | Right (Rt) [Column 2 and 3] | Left(Lt) [Column 4 and 51 | Ratio, SH-t F | Mean F | Right (Rt [Column 2 and 3] | Left (LI) [Column 4 2nd 5.1 | Ratio, Rt/Ll B | Mean B |
| Subject 1 | (elem. top 22-25) | 18.4 | 14 | 1.31 | 4.9 | 7.3 | 0.67 | ||
| (elem. mid 32-35) | 14.7 | 12.6 | UT | 4.4 | 4.7 | 0.94 | |||
| (elem. low 42-15) | 12.3 | 15.3 | 0.80 | 3.5 | 7.2 | 0.49 | |||
| Subject 2 | (elem. top 22-25) | 26 | 11.2 | 2.32 | 6 | 11.6 | 0.52 | ||
| (elem. mid 32-35) | 11.7 | 26 | 1.22 | 15,5 | 15.5 | 1.00 | |||
| (elem. low 4245) | 22.7 | 17.5 | 1.30 | 10.4 | 7.9 | 1.31 | |||
| Subject 3 | (elem. top 22-25) | 43.9 | 20.3 | 2.10 | 1.55±0.6 | 18.5 | 17 | 1.09 | 0.96+0.6 |
| (elem. mid 32-35) | 30.7 | 25.7 | 1.03 | 21.1 | 8.6 | 2.45 | |||
| (elem. low 4245) | 24.7 | 17.4 | 1.42 | 11 | 9.2 | 1.19 | |||
| Subject 4 | (elem. top 22-25) | 10.2 | 5.3 | 1.92 | 4.5 | 4.4 | 1.02 | ||
| (elem. mid 32-35) | 13.3 | 4.8 | 2.77 | 3.5 | 8.1 | 0.43 | |||
| (elem. 4245) | 10.1 | I | 1.26 | 3.4 | 8.1 | 0.41 | |||
Comparison of summed values from front and back for 12 matrix elements, 22 to 45.
| Subject | Location | Sum of change in Impedance <%) | Forced Vital Capacity (FVQ L | Sum/FVC | Ratio front/back |
|---|---|---|---|---|---|
| Subject-1 | front (elem. 22-45) | 87.3 | 3.8 | 23 | 2.73 |
| back (elem.22-45) | 32 | 8.4 | |||
| Subj-2 | front (elem.22-45) | 135.1 | 4.4 | 30.7 | 2.02 |
| back (elem.22-45) | 66.9 | 15.2 | |||
| Subj-3 | front (elem.22-45) | 167.3 | 3 | 55.7 | 1.94 |
| back (elem.22-45) | 86.35 | 28.7 | |||
| front (elem.22-45) | 51.7 | 3 | 17.2 | 1.61 | |
| back (elem.22-45) | 32 | 10,67 | |||
| Average of front/back ratio= 2.1±0.47 | |||||
Percentage change in localized impedance in each individual matrix, as measured from the front and from back. The right-left orientation are arranged to be the same on both views, for easy visual comparison.
| Measurement from Front | Measurement from Back | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right | Left | Right | Left | |||||||||
| 3.3 | 6.7 | 13.9 | 9.5 | 3.3 | 1.9 | 2.6 | 7.6 | 1.8 | 1.9 | 2.2 | 1.5 | |
| 0 | 6.8 | 11.6 | 5.5 | 8.5 | 0 | 1.8 | 2.8 | 2.1 | 6.1 | 1.2 | 1.7 | |
| 14.1 | 8.2 | 6.5 | 5.5 | 7.1 | 6.4 | 3.9 | 2.5 | 1.9 | 2.1 | 2.6 | 3.3 | |
| 0 | 6.5 | 5.8 | 8.6 | 6.7 | 0 | 0 | 2.2 | 1.3 | 4 | 3.2 | 6. | |
| 0 | 4.3 | 2.8 | 4.7 | 2.1 | 0 | 0 | 3.3 | 2.7 | 2.2 | 4.7 | 0 | |
| 4.1 | 0 | 2.7 | 0 | 3.9 | 7.1 | 0 | 0 | 3.4 | 2.2 | 3.8 | 0 | |
| 7.7 | 5.3 | 15.1 | 6.8 | 4.8 | 2.4 | 3.8 | 7.8 | 4.8 | 2.6 | 4.6 | 7.6 | |
| 8.1 | 11.7 | 14.3 | 6.7 | 4.5 | 3.8 | 1.5 | 1.6 | 4.4 | 7.2 | 4.4 | 7.6 | |
| 11.3 | 15 | 16.7 | 12.4 | 13.6 | 6.3 | 3.3 | 10.7 | 4.8 | 5 | 10.5 | 6 | |
| .5 | 12.1 | 10.6 | 4.8 | 12.7 | 20.4 | 9.4 | 7.1 | 3.3 | 4.3 | 3.6 | 5.5 | |
| 19.1 | 12.9 | 4.1 | 8.2 | 12.4 | 16 | 14.1 | 6 | 4.3 | 3.3 | 3.7 | 5.8 | |
| 8.5 | 10.9 | 10.5 | 10.5 | 12.8 | 8.8 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 14.5 | 13.3 | 30.6 | 14.6 | 6.3 | 0 | 6.3 | 7.4 | 11.1 | 3.8 | 132 | 11.7 | |
| 0 | 14.8 | 15.9 | 152 | 14.5 | 15.4 | 8.2 | 15.4 | 5.7 | 3.6 | 5 | 5.7 | |
| 12.3 | 12.2 | 12.5 | 10.1 | 7 3 | 15.5 | 5.4 | 8.3 | 3.7 | 4.5 | 4.7 | 10 | |
| 21.1 | 172 | 12 | 8.1 | 26.2 | 21.7 | 4.8 | 2 | 0 | 0 | 7.3 | 8.9 | |
| 4.5 | 12 | 7.7 | 5.3 | 2 | 10.6 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2.6 | 4.2 | 7.1 | 2.8 | 1.1 | 1.6 | 1 | 3 | 3.1 | 2.8 | 1.2 | ||
| 4.5 | 3 | 7.2 | 3.6 | 1.7 | 6 | 6.8 | 2.2 | 2.3 | 2.7 | 1.7 | 1.7 | |
| 5.6 | 4.7 | 8.6 | 3.1 | 1.7 | 6 | 1.6 | 0.9 | 2.6 | 4 | 4.1 | 2.3 | |
| 2.7 | 4.4 | 5.7 | 3.8 | 42 | 22 | 0.9 | 1.3 | 2.1 | 4.6 | 3.5 | 6.1 | |
| 4.9 | 2.14 | 1.97 | 3.6 | 5.7 | 4.8 | 2.3 | 0.9 | 0.8 | 4.2 | 5.3 | 3 | |
| 1.8 | 4.7 | 2.6 | 0 | 0 | 0 | 5 | 1.8 | 2.5 | 3.9 | 1.2 | 1.7 | |