[Intl_DxMedPhys] Rads reading with virtual desktop

[Bjarnason, Thor [IH]]

Adding to this

What about an assessment of TG270-TR pattern? This is the dynamic test pattern that tests the temporal performance to ensure the refresh rate is appropriate with regards to the gray-level transitions from frame-to-frame.

>From report 270:
"This report does not make any specific recommendations for limits when assessing a display's response time or input latency. However, in cases where there is a delay much greater than two display refresh frames, the user should assess the potential impact on clinical image assessment. For example, if a medical image is refreshed at a rate of 30 Hz (as in fluoroscopy), a delay in the display greater than 30 ms has the potential for impacting clinical image quality."

I am interested to learn how it all works out Lee :)

Kind regards,

Thor Bjarnason, PhD, PEng, FCCPM
Medical Physicist
Interior Health, Kelowna, BC
Office: (250) 980-6157 | Mobile: (250) 826-0722
Thor.Bjarnason at interiorhealth.ca



From: Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces+thor.bjarnason=interiorhealth.ca at lists.osu.edu> On Behalf Of William Sensakovic via Intl_dxmedphys_wd_osu_list
Sent: 23 June 2026 1:39 PM
To: Wunderle, Kevin via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu>
Subject: Re: [Intl_DxMedPhys] Rads reading with virtual desktop

This is regular diagnostic, not mammography, correct? The software is cleared for PHI? How does the system respond when bandwidth not sufficient? Does it just load longer or does it compress? If the latter, is there an indication to the reader
This is regular diagnostic, not mammography, correct?
The software is cleared for PHI?
How does the system respond when bandwidth not sufficient? Does it just load longer or does it compress? If the latter, is there an indication to the reader that it is not loaded at full quality?
Did you check any phantom image to confirm resolution is transferring correctly with no aliasing?
Last question, how does the Dicom GSDF apply? Is it calibrated with an image sent through the virtual machine? Not sure if that is necessary but might be good to check the full curve.
Not sure any of that is regulatory, but just things I could think of that might impact the read.
Breast,
Bill

William F. Sensakovic, PhD, MRSC(MRSE), FAAPM
Chair and Assoc. Prof., Mayo Clinic (Arizona)
Founder, Telerad Physics Teaching, LLC
________________________________
From: Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces+wfsensak=outlook.com at lists.osu.edu<mailto:intl_dxmedphys_wd_osu_list-bounces+wfsensak=outlook.com at lists.osu.edu>> on behalf of Lee Kiessel via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu<mailto:intl_dxmedphys_wd_osu_list at lists.osu.edu>>
Sent: Tuesday, June 23, 2026 9:17 AM
To: Wunderle, Kevin via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list at lists.osu.edu<mailto:intl_dxmedphys_wd_osu_list at lists.osu.edu>>
Subject: [Intl_DxMedPhys] Rads reading with virtual desktop

We have one radiologist who transitioned his home reading station from using a local PACS viewer to reading images through a virtual desktop (images are loaded on a virtual machine, and the display is streamed, uncompressed, to his home workstation).  This is supposedly to help with network bandwidth issues with slow image loading.

I've verified that the images are translating to the proper display luminance by loading test patterns in PACS on the virtual machine and viewing them on the home displays.  Similarly high contrast bar patterns display properly as well.

Our system is considering rolling this out to more radiologists, so I'd like to check to make sure I'm not missing anything that could compromise image quality.  Has anyone had experience with radiologists using a similar virtual desktop setup to view images?  Are there any pitfalls that I may be overlooking?

Thanks in advance!

Lee M Kiessel, PhD, DABR | Chief Diagnostic Physicist
Avera McKennan Hospital and University Health Center
1325 S Cliff Ave | Sioux Falls, SD 57105
Direct: 605-322-6279 | Cell: 605-838-8089

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