Figure 5 | Scientific Reports

Figure 5

From: Quantification of radioactivity by planar gamma-camera images, a promoted method of absorbed dose in the thyroid after iodine-131 treatment

Figure 5

Examples for ROI selection of standard model and rat thyroid. (a) Shows an example of processing of the standard model. The default ULWL is 838. According to equations (1) and (2), we adjusted the value of ULWL to 454 (μ = 50 was adopted). Then, the ROI-1 for the target tissue and ROI-2 for the background were selected according to the UC-ROI defining method and the ring-like background defining method. (b) Is a planar image of a rat thyroid. The processing method was maintained with (a) and we adjusted the ULWL from the default value (3701) to 416 (μ = 50).

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