Discussion on DBT Supplement
La Shawn Edwards
From: La Shawn Edwards
Sent: Montag, 13. Januar 2014 20:26
To: La Shawn Edwards; IHE-Ra...@googlegroups.com; ihe-ra...@googlegroups.com
Subject: [ihe-rad-plan696] Meeting rescheduled: DBT Supplement
When: Dienstag, 21. Januar 2014 16:00-17:30 (UTC+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna.
Where: WebEx
Hello ,
La Shawn Edwards changed the time for this online meeting.
Topic: DBT Supplement
Date: Tuesday, January 21, 2014
Time: 9:00 am, Central Standard Time (Chicago, GMT-06:00)
Meeting Number: 796 314 581
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Schroeder, Antje
From: Schroeder, Antje On Behalf Of La Shawn Edwards
Sent: Dienstag, 14. Januar 2014 16:32
To: 'ihe-mam...@googlegroups.com'; IHE-Ra...@googlegroups.com; 'Zuley, Margarita L'; Hoecker, Renate; Rosipko, Beverly; donna....@Uhhospitals.org; Georgian-Smith, Dianne,M.D.; Marshall, Julian; Ellen Mendelson; Magnus Ranlöf; Hans Kersbergen; Baidya Saurav; Brad Levin; Wolfman, Judith; Couder, Jeanne (GE Healthcare); schr...@cbispecialists.com; Pritts, Nicole
Subject: [IHE-Rad-Tech1650] Discussion on DBT Supplement
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Schroeder, Antje
Good morning.
Thanks to all of you for your input during the tcon on Wednesday. I captured some notes in the attached document. But I also some additional questions that I would like to understand prior to doing any major rewrites:
Projection Images:
When we talked about the Projection use cases we identified the four listed below
1) 3D CAD
2) Additional BTO Reconstructions
3) Technical Problem Solution
4) Review of Projection images
After I talked with Renate and Jeanne, I would like to clarify which images to use in which scenario.
· 3D CAD is out of scope for now, but I assume that would be done on the FOR PROCESSING images.
· What would the workflow look like, if you want to create addition reconstructions. Would you review the FOR PRESENTATION images first, or would this decision be made based on the Breast Tomosynthesis slices?
· For Technical Problem Solution, is that done based on the FOR PROCESSING or the FOR PRESENTATION images?
· For the review case I would assume that the FOR PRESENTATION images would be used. But is this really done in clinical routine.
Background of my question is that I really would like to understand,
· whether Image Displays need to be capable of retrieving, displaying both SOP Classes
· How much of the Display features (Background air suppression, Size adjustments, Contrast adjustments, image orientation, view port layouts, ... ) needs to be described in detail.
Reconstruction of Breast Tomosynthesis Objects at different slice thicknesses
From my understanding, additional Breast Tomosynthesis objects can be derived from either the FOR PROCESSING projection images or from a thin slice Breast Tomosynthesis Object.
· Is this assumption correct?
· If so, do we need to annotate them differently depending on the object type that was used to generate them?
· I would also assume that we need a requirement to prevent creation of new Breast Tomosynthesis objects from thick slice data, is that correct? Do we need to say something about it?
I would really appreciate your input on these questions. Thanks in advance.
Best regards
Antje
Schroeder, Antje
Good morning.
The IHE Radiology Technical Committee will talk about the DBT Supplement at the following times during our face to face meeting next week
· Tuesday Feb.11 (8am-noon CST )
· Tuesday Feb.11 (3pm-5pm CST)
· Wednesday Feb.12 (8am-11am CST)
· Wednesday Feb. 12 (1pm-3pm CST)
Based on the doodle poll, I sent out I would like to use the Wednesday morning session for clinical questions, but feel free to dial in any time you are available. We really appreciate your input.
The webex information is listed below.
Thanks in advance, best regards
Antje
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To join the online meeting (Now from mobile devices!)
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Schroeder, Antje
In addition to my previous email, also please see the current draft of the supplement at
ftp://ftp.ihe.net/Radiology/iherad-2014/Tech_Cmte/Supp%20Development/DBT/IHE_RAD_Suppl_DBT_2014-02-07.doc
Best regards
Antje
From: Schroeder,
Antje
Sent: Freitag, 7. Februar 2014 09:44
To: Schroeder, Antje; La Shawn Edwards; 'ihe-mam...@googlegroups.com'; IHE-Ra...@googlegroups.com; 'Zuley, Margarita L'; Hoecker, Renate; Rosipko, Beverly; donna....@Uhhospitals.org; Georgian-Smith, Dianne,M.D.; Marshall, Julian; Ellen Mendelson;
Magnus Ranlöf; Hans Kersbergen; Baidya Saurav; Brad Levin; Wolfman, Judith; Couder, Jeanne (GE Healthcare); schr...@cbispecialists.com; Pritts, Nicole
Subject: DBT discussions during the IHE Radiology Technical Face to face meeting
Good morning.
The IHE Radiology Technical Committee will talk about the DBT Supplement at the following times during our face to face meeting next week
· Tuesday Feb.11 (8am-noon CST )
· Tuesday Feb.11 (3pm-5pm CST)
· Wednesday Feb.12 (8am-11am CST)
· Wednesday Feb. 12 (1pm-3pm CST)
Based on the doodle poll, I sent out I would like to use the Wednesday morning session for clinical questions, but feel free to dial in any time you are available. We really appreciate your input.
The webex information is listed below.
Thanks in advance, best regards
Antje
-------------------------------------------------------
To join the online meeting (Now from mobile devices!)
-------------------------------------------------------
1. Go to https://ihe.webex.com/ihe/j.php?ED=267879727&UID=0&RT=MiM3
2. If requested, enter your name and email address.
3. If a password is required, enter the meeting password: (This meeting does not require a password.)
4. Click "Join".
5. Follow the instructions that appear on your screen.
To view in other time zones or languages, please click the link:
https://ihe.webex.com/ihe/j.php?ED=267879727&UID=0&ORT=MiM3
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Access code:927 931 335
Valerio Salomoni
I have read the draft of the DBT supplement and I have one doubt regarding Pixel Spacing and "Same Size" (section 4.16.4.2.2.1.y.3.1) requirement for display.
I have seen that in Breast Tomosynthesis Objects, the Pixel Spacing attribute (0028,0030) which belongs to the Pixel Measures Functional Macro can be inserted in Per-frame Functional Groups Sequence or in Shared Functional Groups Sequence, thus it can be different for every slice.
When an Image Display station displays an image with different Pixel Spacing for every slice and the user wants to navigate through the slices, the Image Display station should adjust continuously the "zoom factor" (pixel monitor / pixel detector ratio) in order to satisfy a "Same Size" requirement during slice navigation (not present yet in the DBT profile).
In my opinion the DBT profile should tell how to handle this situation, e.g. if the "same size" requirement has to be satisfied when changing the displayed slice or if this is not required.
In case the "same size" for different slices will be required, I would suggest to define a way to understand where is the "pivot" point during the automatic zoom of the slices due to the slice navigation (I am not sure if "pivot" is the right word but I hope it is clear) to avoid panning the image without the user control (e.g. should we consider the "Plane Position" and "Pixel Spacing" to adjust a little bit the slice position every time we change the displayed slice?).
In case the "same size" for different slices will not be required, I would suggest at least to specify a reference "slice" to be used to apply the "same size" requirement to the tomo images (e.g. the lowest slice or the one located on the breast support).
If I was not clear enough, please let me know, I will try to explain better.
Valerio
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