WEBVTT
Kind: captions
Language: en

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Evaluation of nidus, brain tissue, and CSF segmentation.

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With the use of linear regression and the brain Altman plot to evaluate.

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The red lines and dots regression.

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The red lines and dots represent the Nidus, Brain Tissue.

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The nidus.

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the green lines and dots represent brain tissue;

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and the blue lines and dots represent CSF.

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Radiation exposure region, manual segmentation,

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and automated segmentation we can see in the figure.

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In T2w images. The red curve indicates the boundary of the prescription isodose region.

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The blue, green, and red colors respectively indicate the nidus, brain tissue, and CSF.

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We also used SI to determine the degree to which the proposed automated segmentation method

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agrees with manual clustering in terms of
sensitivity,

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specificity, and average performance for the three types of tissue.

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The proposed algorithm outperformed manual clustering

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and specificity in detecting the nidus:

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SI equals 74%;

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Sensitivity is 83%,

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and specificity is 86%.

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The results for brain tissue were as follows.

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The results of CSF and Nidus.

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The SI value over 0.7 is regarded as strong agreement.

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And further, we correlated the results obtained using the imaging algorithm

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and clinical follow-up results

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from the 234 AVM patients with unruptured
AVM who underwent upfront

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before the GKRS radiosurgery.

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This includes 98 females and 136 man patients.

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The median volume of the prescription isodose region was 21 ml (range from 7 to 53 ml).

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The median prescription peripheral dose for the nidus was 17Gy (range from 15 to 18.5Gy).

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This figure shows that Box plot showing the correlation between ARE

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and the brain tissue component of cerebral AVM.

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Cases with a greater number of brain tissue components

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are prone to ARE following radiosurgery.