Tumor Volume Measurement Results for Three Patients Using Different Measurement Methods
| Patient no. | Method* | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| CT (mL) | CV | MVOI | LS | TC | WLS | ||||
| No coll | W/coll | ML | FBP | ML | FBP | ||||
| Patient 1 | |||||||||
| Large | 48.5 | 1.77 | 0.440 | 0.914 | 1.22 | 1.22 | 1.59 | 1.54 | 1.29 |
| Small | 2.1 | 0.67 | 0.135 | 0.254 | 1.27 | 0.98 | 3.34 | 2.89 | 0.400 |
| Patient 2 | |||||||||
| Large | 12.7 | 0.318 | 0.0770 | 0.255 | 0.335 | 0.327 | 0.470 | 0.429 | 0.329 |
| Small | 0.67 | 2.57 | 0.0992 | 0.370 | 3.625 | 3.50 | 6.845 | 5.11 | 3.922 |
| Patient 3 | |||||||||
| Large | 117 | 0.0348 | 0.0433 | 0.0614 | 0.0681 | 0.0755 | 0.147 | 0.139 | 0.0722 |
| Small | 1.3 | 0.705 | 0.0592 | 0.148 | 1.53 | 1.75 | 3.13 | 2.94 | 1.132 |
↵* Measurements in MBq/mL unless otherwise noted.
CV = standard conjugate views; MVOI = mean volume of interest, with and without compensation for collimator (coll); LS = least-squares fitting with reconstructed SPECT data and templates; TC = template correction with reconstructed SPECT data and templates; WLS = planar weighted least-squares fitting using planar emission data and projected templates; ML = maximum-likelihood expectation maximization reconstruction; FBP = filtered backprojection reconstruction.