[Bug] TotalSegmentator dataset taking longer to load compared to v2

[igoroctaviano]

Describe the Bug

Based on recent tests with v2 and v3 we identified that the loading of the segmentations are faster in v2.
This issue should further investigate and address the problem.

• TotalSegmentator dataset shared with @sedghi

Steps to Reproduce

1. Load TotalSegmentator dataset
2. Load segmentation series (benchmark v2 and v3)

The current behavior

Loads slower in v3

The expected behavior

Loads better or equal to v2

OS

macOS 13.4 (22F66)

Node version

16

Browser

Version 114.0.5735.198 (Official Build) (x86_64)

[sedghi]

I can't run the total segmentor case in OHIF v2, which study you are trying to load?

[igoroctaviano]

@sedghi http://localhost:3000/viewer/61.7.186150680759207515465616855509993541745

[sedghi]

Were you supposed to share a screenshot or a dataset?

[igoroctaviano]

Were you supposed to share a screenshot or a dataset?

Remember the drive I shared with a bunch of datasets e.g. the RGB one? there you can find the totalsegmentator dataset.

[sedghi]

This file doesn't have a SEG

I'm using another study which you can find here, but I'm not able to load it in v2 either

https://www.dropbox.com/t/eEseMevPSwqJLsDt

[igoroctaviano]

@sedghi I just uploaded another zip with the seg file to that drive.

[igoroctaviano]

@sedghi #3577 fix was tested using zip I uploaded or other dataset?

[rodrigobasilio2022]

It seems to be fixed as stated in the title: old v3 version (~33s) new v3 version (~11s). I couldnt open the cited study in v2 as it gives the following error

[rodrigobasilio2022]

@fedorov do you have another TotalSegmentator studies to test, to try to understand if this is an isolated problem?

[rodrigobasilio2022]

Using the link: https://viewer.imaging.datacommons.cancer.gov/viewer/61.7.186150680759207515465616855509993541745
The study opens in v2, but the comparison is bogus as the segmentation in IDC only has 13 segments while the segmentation in google drive has 98 segments. Also in v2, despite the segmentation appears to load fast the user cannot manipulate the image as it is loading the main series images

Using exactly the same images for both viewers, the loadign appears to be very similar

[rodrigobasilio2022]

@fedorov, do you want to investigate why v2 didnt load the full segmentation?

[fedorov]

The study in IDC contains only the segmentation that was loaded. It does not have the same segmentation with 98 segments shared separately.

[rodrigobasilio2022]

The file shared with Ali Reza has it. Anyway, problem seems to be solved.

[fedorov]

To confirm, tests O16 and O19 in the IDC test inventory (access restricted to IDC project participants) should be used to test this functionality.

[fedorov]

I confirmed performance is very good now, nice work @rodrigobasilio2022! 👍