Hi Csaba, I am working with Tina Kapur now. I am a doctor and physicist focus on 125I seeds brachytherapy in China. It is difficult to use TPS to segment the seed in CT automatically. After the brachytherapy, the physicist have to pick up the seeds one by one manually to finish the postoperative do…

Hi Hongtao, I downloaded the dataset you shared. I think it can be segmented in Segment Editor by using the threshold effect first, then the Scissors effect to cut out the unneeded parts. I will try to figure out a better way if I have more time. The seed locations can be then acquired as follows: …

Hi Csaba, I am really glad to hear you said it is easy for you. If we can make automatic segmentation and dose calculation happen, I have almost 500 cases to study. If it is not enough, I will make a big database and persuade other doctors add the data in it. Beside segmentation and dose calculatio…

Hi Hongtao, Please use one forum for the discussion. We already use 4 (mailing list, discourse, email thread with Tina, this thread), and it already became unfollowable. Let’s add every comment and answer on discourse [1]. I’d like to emphasize again: I don’t have the capacity to work on dose calc…

Hi Csaba, I am sorry for bother you a lot and I am very appreciate that you can help. I have a team of doctors and student in China work with me but without engineer. There is not a timeline for this work till now. Thank you very much. Hongtao

Sounds good! Please review the steps I described and let me know if you have further questions. Thanks!

[image] cpinter: A simple script can create fiducials at the center of masses of the seeds. I can easily write such a script for you If you implement that, it would be great if you could add it to the Segment Statistics module.

Hi Sharp, What do you mean when you say ‘‘is dead easy to implement’’. If we can segment the seeds first, is it difficult to calculate the dose with TG-43 formalism? Thank you very much. Hongtao Zhang

[image] cpinter: create fiducials at the center of masses of the seeds. Using the ITK filter itkFFTNormalizedCorrelationImageFilter could be used to find the center of each seed. In other word, the maximum of correlation between a synthetic representation of the seed and the corresponding ove…

Segment radioactive seeds in brachytherapy patients and calculate dose

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Segment radioactive seeds in brachytherapy patients and calculate dose

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