MacOS 27 compatibility
283 views
Skip to first unread message
Haralampos Ladopoulos
Sep 20, 2026, 1:52:36 AMSep 20
to Horos Project
Hello everyone
So can we upgrade to MacOS 27 and continue running Horos 4.0.1 or do we have to wait for a newer version of Horos?
Thanks!
Hiroaki Inomata
Sep 20, 2026, 4:34:10 AMSep 20
to Haralampos Ladopoulos, Horos Project
Hi,
Horos v4.0.1 crashes the viewer on macOS 27.
It is up to you whether to wait for a fix.
The repository's "Issues" page lists various development versions.
https://github.com/horosproject/horos/issues
Trying those out is one option.
By the way, the pace of development for the Horos project itself has
slowed down recently.
You might want to consider switching to a different application.
If you check the Mac App Store, you will find plenty of apps available
for free or at low prices (under $10 USD).
iCat Solution, which previously supported Horos, has released the Falcon series.
https://apps.apple.com/us/app/falcon-mx-dicom-viewer/id1494173140
I also distribute the Phorlix series.
https://apps.apple.com/us/app/phorlix-lite-dicom-viewer/id6740269806
In terms of fundamental design, these newer apps are superior to Horos.
I believe there are alternatives available, even if a new version of
Horos isn't released.
Hiroaki Inomata, MD
2026年9月20日(日) 14:52 Haralampos Ladopoulos <ladop...@gmail.com>:
> You received this message because you are subscribed to the Google Groups "Horos Project" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to horos-projec...@googlegroups.com.
> To view this discussion visit https://groups.google.com/d/msgid/horos-project/0607773b-78ce-48da-a402-bbd2c2b91029n%40googlegroups.com.
Horos v4.0.1 crashes the viewer on macOS 27.
It is up to you whether to wait for a fix.
The repository's "Issues" page lists various development versions.
https://github.com/horosproject/horos/issues
Trying those out is one option.
By the way, the pace of development for the Horos project itself has
slowed down recently.
You might want to consider switching to a different application.
If you check the Mac App Store, you will find plenty of apps available
for free or at low prices (under $10 USD).
iCat Solution, which previously supported Horos, has released the Falcon series.
https://apps.apple.com/us/app/falcon-mx-dicom-viewer/id1494173140
I also distribute the Phorlix series.
https://apps.apple.com/us/app/phorlix-lite-dicom-viewer/id6740269806
In terms of fundamental design, these newer apps are superior to Horos.
I believe there are alternatives available, even if a new version of
Horos isn't released.
Hiroaki Inomata, MD
2026年9月20日(日) 14:52 Haralampos Ladopoulos <ladop...@gmail.com>:
>
> Hello everyone
>
> So can we upgrade to MacOS 27 and continue running Horos 4.0.1 or do we have to wait for a newer version of Horos?
>
> Thanks!
>
> --
> Hello everyone
>
> So can we upgrade to MacOS 27 and continue running Horos 4.0.1 or do we have to wait for a newer version of Horos?
>
> Thanks!
>
> You received this message because you are subscribed to the Google Groups "Horos Project" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to horos-projec...@googlegroups.com.
> To view this discussion visit https://groups.google.com/d/msgid/horos-project/0607773b-78ce-48da-a402-bbd2c2b91029n%40googlegroups.com.
Haralampos Ladopoulos
Sep 20, 2026, 5:46:19 AMSep 20
to Horos Project
Transition from Horos to Falcon MX is not very easy. I use two DICOM nodes for remote access, I have already setup same albums and I have a 1TB database. There is not an import settings option on Falcon so I just have to wait for a Horos update.
Thanks!
Hiroaki Inomata
Sep 20, 2026, 6:03:17 AMSep 20
to Haralampos Ladopoulos, Horos Project
1TB of study data in Horos?
That’s a massive amount of data!
With that kind of volume, it might be a good time
to consider shifting over to a dedicated PACS to handle it all smoothly.
2026年9月20日(日) 18:46 Haralampos Ladopoulos <ladop...@gmail.com>:
> To view this discussion visit https://groups.google.com/d/msgid/horos-project/09016ea7-ab77-4cfe-8373-d4f761306d65n%40googlegroups.com.
That’s a massive amount of data!
With that kind of volume, it might be a good time
to consider shifting over to a dedicated PACS to handle it all smoothly.
2026年9月20日(日) 18:46 Haralampos Ladopoulos <ladop...@gmail.com>:
Haralampos Ladopoulos
Sep 20, 2026, 9:34:41 AMSep 20
to Horos Project
1TB on external SSD that works flawlessly on Horos Locations
Hiroaki Inomata
Sep 20, 2026, 5:15:42 PMSep 20
to Haralampos Ladopoulos, Horos Project
>I have already set up the same albums and I have a 1 TB database. There is no import settings option in Falcon.
Albums are specific to Horos/OsiriX, so I wouldn’t expect a recently
developed viewer to support importing them.
I implemented the initial version of the ROI-color-rotation-UI in
response to a user request and submitted it to Horos as a pull
request, which was later merged:
https://github.com/horosproject/horos/issues/342
At the time, I found that the ROI state was stored in a Horos-specific
format rather than a standard DICOM object — a design choice I did not
particularly like.
Modern DICOM viewers should prioritize interoperable DICOM data over
proprietary application formats.
As shown in the attached screenshots, segmentation and ROI data
created by PHORLIX can be viewed in other viewers, including Weasis.
If Horos albums work for you, that’s fine.
I simply prefer portable DICOM over proprietary application data.
Hiroaki Inomata, MD
2026年9月20日(日) 22:34 Haralampos Ladopoulos <ladop...@gmail.com>:
> To view this discussion visit https://groups.google.com/d/msgid/horos-project/c526b1e2-6a24-4597-98cf-b029e2a92980n%40googlegroups.com.
Albums are specific to Horos/OsiriX, so I wouldn’t expect a recently
developed viewer to support importing them.
I implemented the initial version of the ROI-color-rotation-UI in
response to a user request and submitted it to Horos as a pull
request, which was later merged:
https://github.com/horosproject/horos/issues/342
At the time, I found that the ROI state was stored in a Horos-specific
format rather than a standard DICOM object — a design choice I did not
particularly like.
Modern DICOM viewers should prioritize interoperable DICOM data over
proprietary application formats.
As shown in the attached screenshots, segmentation and ROI data
created by PHORLIX can be viewed in other viewers, including Weasis.
If Horos albums work for you, that’s fine.
I simply prefer portable DICOM over proprietary application data.
Hiroaki Inomata, MD
2026年9月20日(日) 22:34 Haralampos Ladopoulos <ladop...@gmail.com>:
Haralampos Ladopoulos
Sep 20, 2026, 10:50:13 PMSep 20
to Hiroaki Inomata, Horos Project
Το Falcon MX στο Apple Store κατεβαίνει και εγκαθίσταται χωρίς πληρωμή. Στην έκδοση αυτή μπορείς να διαμορφώσεις τις ρυθμίσεις του listener καθώς και ένα dicom node. Μπορείς να δοκιμάσεις την συνδεσιμότητα του node που έφτιαξες αλλά δεν μπορείς να κατεβάσεις εξετάσεις από το PACS. Στην δοκιμή αυτή το αποτέλεσμα είναι ping offline....
Όταν στην απλή αυτή δοκιμή το πρόγραμμα αποτυγχάνει πώς θα το εμπιστευτώ ώστε να το αγοράσω...
Και το ερώτημα παραμένει. Υπάρχει οδηγός μετάβασης από το Horos στο Falcon?
Hiroaki Inomata
Sep 21, 2026, 3:47:07 AMSep 21
to Horos Project
For context, I have no affiliation with Falcon. I mentioned it only because
iCat Solution has described Falcon as the successor to Horos.
As far as I know, DICOM does not define a single, universal command
for transferring all studies from one PACS or DICOM database to another.
The actual migration workflow depends on the features implemented by
each application.
You may already know this, but the simplest way to transfer studies is
to use DICOM Send, which uses the C-STORE operation.
PHORLIX supports C-STORE as a Storage SCP.
In PHORLIX, click the PACS button in the database window, set the AE
title and listening port in the PACS panel,
and click Start. PHORLIX will then wait for incoming DICOM associations.
To send studies from Horos or HorliX, add PHORLIX as a DICOM network
node using PHORLIX’s IP address, AE title, and port.
Then select one or more studies and choose “Export to DICOM Network
Node” (DICOM Send).
Multiple studies can be sent in one operation.
In my experience, this workflow generally works, although individual studies
may occasionally fail to transfer and need to be retried.
By the way, i could implement a dedicated migration utility if needed,
but I have not needed one myself.
HorliX still runs in my Golden Gate environment, so I have no need to
migrate my own data.
Hiroaki Inomata, MD
2026年9月21日(月) 11:50 Haralampos Ladopoulos <ladop...@gmail.com>:
iCat Solution has described Falcon as the successor to Horos.
As far as I know, DICOM does not define a single, universal command
for transferring all studies from one PACS or DICOM database to another.
The actual migration workflow depends on the features implemented by
each application.
You may already know this, but the simplest way to transfer studies is
to use DICOM Send, which uses the C-STORE operation.
PHORLIX supports C-STORE as a Storage SCP.
In PHORLIX, click the PACS button in the database window, set the AE
title and listening port in the PACS panel,
and click Start. PHORLIX will then wait for incoming DICOM associations.
To send studies from Horos or HorliX, add PHORLIX as a DICOM network
node using PHORLIX’s IP address, AE title, and port.
Then select one or more studies and choose “Export to DICOM Network
Node” (DICOM Send).
Multiple studies can be sent in one operation.
In my experience, this workflow generally works, although individual studies
may occasionally fail to transfer and need to be retried.
By the way, i could implement a dedicated migration utility if needed,
but I have not needed one myself.
HorliX still runs in my Golden Gate environment, so I have no need to
migrate my own data.
Hiroaki Inomata, MD
2026年9月21日(月) 11:50 Haralampos Ladopoulos <ladop...@gmail.com>:
Aðalsteinn Atli Guðmundsson
Sep 23, 2026, 6:14:36 AMSep 23
to Horos Project
I have found a temporary solution for my Horos crashing on MacOS 27: Reducing screen resolution.
For me, Horos opens normally with the list of studies, but when I try to open a study to view the images, it immediately crashes.
If I disconnect my laptop from all external displays, then Horos works! My laptop's screen resolution is 1512x982.
If I have my laptop in clamshell mode (lid closed) and connected to a single external monitor, Horos crashes when that monitor is in it's default resolution (2560x1440), but if I reduce the resolution of that display Horos works fine!
Best resolution that Horos runs on for me is 1600x900.
Best resolution that Horos runs on for me is 1600x900.
So if you need to run Horos before a fix is applied, go to System Settings -> Displays and make sure all connected and built-in displays are set to a resolution of 1600x900 or smaller. For some displays, you'll have to click "Advanced..." and enable "Show resolutions as list" to be able to manually select a resolution.
I haven't tried, but I'm betting this will also work if you're running Horos on an iMac, Mac Studio or Mac Mini.
Note that after enabling "Show resolutions as list" you can press "Done" and also enable "Show all resolutions" below the list of resolutions to get a longer list of resolutions but some of those may have aspect ratios that don't fit your screen causing some sides of the display to become black and unused while that resolution is selected. Perhaps, on your display and with all resolutions enabled, you can select something greater than 1600x900 that works, but for me, that is the max.
I haven't tried, but I'm betting this will also work if you're running Horos on an iMac, Mac Studio or Mac Mini.
Note that after enabling "Show resolutions as list" you can press "Done" and also enable "Show all resolutions" below the list of resolutions to get a longer list of resolutions but some of those may have aspect ratios that don't fit your screen causing some sides of the display to become black and unused while that resolution is selected. Perhaps, on your display and with all resolutions enabled, you can select something greater than 1600x900 that works, but for me, that is the max.
Message has been deleted
Hiroaki Inomata
Sep 27, 2026, 2:44:11 AMSep 27
to Horos Project
I had some time available, so I implemented a feature to import DICOM data
from Horos/HorliX into PHORLIX Lite.
It is included in the v1.1.6 release candidate and is available at:
https://phazor.info/HorliX/?p=572
I am not proposing any changes to the Horos project.
My point is simply that DICOM is an open, vendor-neutral standard,
so users should have a practical way to move their DICOM data to
another application when necessary.
The current workflow is as follows:
1. Select “Import From Horos/HorliX” from the File menu.
See: menu-import.png
2. Select a “Horos Data”, “HorliX Data”, or “DATABASE.noindex” folder.
See: import-dialog.png
3. PHORLIX scans the selected database for DICOM objects, including
files without a .dcm extension.
It then displays the number of candidate files and asks for confirmation.
See: import-alert.png
4. The DICOM objects are copied into the PHORLIX database.
After the import, PHORLIX reports the number of successfully imported
and failed files.
See: import-complete.png
This is an import of the DICOM objects themselves. Horos/HorliX
Albums, application settings, and proprietary database data
are not imported.
The importer does not attempt to reproduce the Horos database structure;
it simply provides a way to preserve and transfer portable DICOM data.
If no significant issues are found, I plan to release it on the Mac App Store.
Hiroaki Inomata, MD
2026年9月23日(水) 19:14 Aðalsteinn Atli Guðmundsson <al...@raforninn.is>:
> To view this discussion visit https://groups.google.com/d/msgid/horos-project/c8774bb2-d770-4e2c-82d5-67b8a5631749n%40googlegroups.com.
from Horos/HorliX into PHORLIX Lite.
It is included in the v1.1.6 release candidate and is available at:
https://phazor.info/HorliX/?p=572
I am not proposing any changes to the Horos project.
My point is simply that DICOM is an open, vendor-neutral standard,
so users should have a practical way to move their DICOM data to
another application when necessary.
The current workflow is as follows:
1. Select “Import From Horos/HorliX” from the File menu.
See: menu-import.png
2. Select a “Horos Data”, “HorliX Data”, or “DATABASE.noindex” folder.
See: import-dialog.png
3. PHORLIX scans the selected database for DICOM objects, including
files without a .dcm extension.
It then displays the number of candidate files and asks for confirmation.
See: import-alert.png
4. The DICOM objects are copied into the PHORLIX database.
After the import, PHORLIX reports the number of successfully imported
and failed files.
See: import-complete.png
This is an import of the DICOM objects themselves. Horos/HorliX
Albums, application settings, and proprietary database data
are not imported.
The importer does not attempt to reproduce the Horos database structure;
it simply provides a way to preserve and transfer portable DICOM data.
If no significant issues are found, I plan to release it on the Mac App Store.
Hiroaki Inomata, MD
2026年9月23日(水) 19:14 Aðalsteinn Atli Guðmundsson <al...@raforninn.is>:
Message has been deleted
Message has been deleted
Hiroaki Inomata
Sep 27, 2026, 1:57:46 PMSep 27
to Horos Project
PHORLIX Lite v1.1.6 is now available on the Mac App Store!
[US] https://apps.apple.com/us/app/phorlix-lite-dicom-viewer/id6740269806?mt=12
Installing the Mac App Store version will replace the version
downloaded directly from the website,
but your existing data will be preserved and carried over, so there is
no need to worry.
This release also includes a few additional language resources.
Hiroaki Inomata, MD
2026年9月27日(日) 15:43 Hiroaki Inomata <inomat...@gmail.com>:
[US] https://apps.apple.com/us/app/phorlix-lite-dicom-viewer/id6740269806?mt=12
Installing the Mac App Store version will replace the version
downloaded directly from the website,
but your existing data will be preserved and carried over, so there is
no need to worry.
This release also includes a few additional language resources.
Hiroaki Inomata, MD
2026年9月27日(日) 15:43 Hiroaki Inomata <inomat...@gmail.com>:
Hiroaki Inomata
Sep 29, 2026, 8:55:35 AMSep 29
to Horos Project
PHORLIX Lite v1.1.6 now includes a basic DICOM importer for data
stored in Horos/HorliX.
This functionality is NOT yet available in PHORLIX v1.1.0 , but I plan
to add it in the next version.
Hiroaki Inomata, MD
2026年9月28日(月) 2:57 Hiroaki Inomata <inomat...@gmail.com>:
stored in Horos/HorliX.
This functionality is NOT yet available in PHORLIX v1.1.0 , but I plan
to add it in the next version.
Hiroaki Inomata, MD
2026年9月28日(月) 2:57 Hiroaki Inomata <inomat...@gmail.com>:
Hiroaki Inomata
Oct 4, 2026, 7:18:13 PMOct 4
to Horos Project
Just a small update:
following the feature's release in PHORLIX Lite,
the data import function is now available in PHORLIX v1.1.1 .
https://apps.apple.com/us/app/phorlix-dicom-viewer/id6789148582?mt=12
It is a paid app, so it may only be relevant to a few, but feel free
to check it out.
Hiroaki Inomata, MD
2026年9月29日(火) 21:55 Hiroaki Inomata <inomat...@gmail.com>:
following the feature's release in PHORLIX Lite,
the data import function is now available in PHORLIX v1.1.1 .
https://apps.apple.com/us/app/phorlix-dicom-viewer/id6789148582?mt=12
It is a paid app, so it may only be relevant to a few, but feel free
to check it out.
Hiroaki Inomata, MD
2026年9月29日(火) 21:55 Hiroaki Inomata <inomat...@gmail.com>:
Reply all
Reply to author
Forward
0 new messages