Presentation on theme: "How to purchase interoperable Mammo Equipment"— Presentation transcript:
1How to purchase interoperable Mammo Equipment Introduction & disclosure of affiliationCarolyn ReynoldsConnectivity ManagerHologic, Inc.IHE Mammography CommitteeStanford Conference on Breast ImagingApril 27, 2006
2How to purchase interoperable Mammo Equipment vs How to purchase interoperable Mammo Equipment vs. What to include in the RFPMy original title was “What to include in the RFP”, but for a technical geek like me who’s the one who gets to answer your RFP’s, … slides later, and I’m still not sure that I would have covered the topic to my satisfaction.So you’re lucky that they only gave me 10 minutes, so I’m just going to hit the high points to give you some food for thought and references that you can turn to, to learn more.
3Be careful of what you ask for…… …….you just may get it -Author UnknownA twist on an ancient proverb..
4…….because it may not work Be careful what youDON’T ask for………….because it may not workAnd my own twist on the statement
5A True Story Asked if PACS could store mammography images PACS modalityMammoWorkstation
6A True Story Asked if PACS could store mammography images Did NOT ask if they could be retrievedPACSmodalityMammoWorkstation
7A True Story Cont’d PACS did not offer A diagnostic mammo workstationAbility to print original quality mammo imagesFacility ended up investing in a separate storage solution for mammography with more efficient workflowWorkflow inefficiencies were intolerable with existing PACS for accessing prior images, so facility ended up investing in a separate storage solution for mammography with more efficient workflowPACSmodalityMammoWorkstation
8Education – RFPs for Digital Mammography So, how do you know what to ask for?For a start, ask for the:IHE Mammography Image Integration ProfileHowever……
9Things to keep in mind Profile was just published this week 1st real world test at Connectathon Jan 2007Vendor adoption takes timeProduct development takes timeNot all equipment is replaced at the same timeBut it’s not all doom and gloom……
10The Good News Many IHE Mammo features are available, today Other applicable IHE profiles may be of interestHave been around for a whileAre widely adoptedIncrease success in various clinical challengese.g. scheduling exams, storing data to CD’sEducation and knowledge are keyMany IHE mammo features are available in products, todayThere are other applicable IHE profiles that increase your chance of interoperability which have been around for a while and are widely adopted.Speaking of education……….
11IHE Mammography Image Integration Profile Coming RSNA 2006!Digital Mammography User HandbookGoal:Provide education on deploying IHE to solve mammography interoperability challenges!! Section on RFP’s !!FrameworkIHE UsersHandbookDigitalMammographyMy talk is a big infomercial for the Digital Mammography User Handbook. If there’s nothing else that you take away from this talk, I want to know that this reference exists and it will help you reduce surprises and irritations if you consider this info during your purchasing decisions.Its goal is to provide education on deploying IHE to solve mammography interoperability challengesAnd…there’s a section on writing RFP’s. With the goal to put topics that you care about in terms that you understand, while translating your interests into unambiguous product requirements that will lead to interoperability.What I’m about to go through next is just an example of some of the things you might find in that section. I’ll describe the clinical problem and show you the what some of the language might look like in an RFP, which has been simplified a bit for this presentation. I don’t expect you to absorb any of it now, but it’ here for reference (and the conference organizers will have a copy of my slides) to make available to you.
12Mammography Deployment Handbook – RFP Section Example RFP language forGeneral product informationFFDM ModalitiesDiagnostic WorkstationsPACS, ArchivesPrintersCAD SystemsFilm DigitizersOther IHE Profiles of interestThese are the topics that the handbook will cover, and now I’ll just go through a subset.
13General RFP Recommendations Ask vendor(s) for commitment to the IHE Mammography Image Integration Profile (MAMMO).Ask about:Upgrade to existing product or new productAnticipated availabilityBudgetary pricing or other possible charges
14General RFP Recommendations For each of the components that you will be purchasing….Request a DICOM Conformance StatementRequest an IHE Integration StatementA DICOM Conformance Statement is going to provide your technical people the details of what protocols are available for sharing data with other devices, but aA DICOM conf statement is not enough…to know if you have interoperability.An IHE Integration Statement is going to explain which IHE clinical problem solutions this product addresses and give you a better chance of interoperability as defined by those solutions.
15Example IHE Integration Statement IHE Integration Statement VendorProductVersionDateIntegrated Medical SystemAwesome FFDM1.2.31 July 2006This product implements all transactions required in the IHE Technical Framework to support the IHE Integration Profiles, Actors and Options listed below:Integration Profiles ImplementedActors ImplementedOptions ImplementedMammography Image IntegrationAcquisition ModalityPartial ViewScheduled WorkflowAssisted Acquisition Protocol SettingPPS Exception Management OptionBroad Worklist QueryPatient Based Worklist QueryPatient Information ReconciliationNonePortable Data for ImagingMedia CreatorLinks to Standards Conformance Statements for the ImplementationHL7Not applicableDICOMLinks for general information on IHEIn North America:In Europe:In Japan:ExampleIHE IntegrationStatementExample of what an IHE integration statement looks like. Again, the mammography user handbook will help translate what this all means. Basically, it explains the “package” of defined clinical solutions that can be addressed by a specific product.The Handbook is what is going to translate what this all means in your language
16Acquisition Modality- Presentation Requirements Does your modality:Differentiate spot and magnified views from regular views (i.e. CC View)?Yes___No___Detect the skin line and differentiate breast tissue from non-breast tissue in the image?Contain any private or proprietary methods of image display not communicated through the standard DICOM img path?In GeneralDoes your system encode data in a way that will be compatible with my downstream devices?
17Workstations Data Requirements Does your workstation:In General:Can the workstation handle the necessary data for mammography images and CAD results?Does it know how to tie the two together?Support and display DICOM Digital Mammography X-Ray objects with an intent type of FOR PRESENTATION?Yes___No___Support and display Mammography CAD Structured Reports?Use the Referenced Source Image Sequence attributed to tie “for presentation” images to CAD results performed on “for processing” images?
18Workstations Hanging Protocols Can your product handle mammography hanging protocols correctly?VS.
19Workstations Hanging Protocols There is not “one size fits all” protocol for mammographyAs part of your RFP, clarify your own preferred layouts and desired sequence of layoutsMake sure HP’s are determined by factors on next slide, not the traditional study and series description attributes.Hanging protocol functionality that has been designed for other modalities in mind may be inappropriate for mammography reading – examples: site example here such as ordering of images, orientation, etc.
20Workstations Hanging Protocols Can your hanging protocols simultaneously display current & prior 4 view screening mammographic images?Yes___No___Do your hanging protocols use the following attributes to determine placement and orientation of mammography images?View Code SequenceLateralityPatient OrientationView Code Sequence ModifierDo your hanging protocols require specific values in study description or series description attributes?Sample language for RFPAll these factors are enough to get orientation and placement correct.
21Workstations Size Presentation Can your workstation:Does your product handle sizing correctly?VS.Display a patient’s images the same relative size, based upon the imager pixel spacing attribute, even if images were captured on detectors of different size and resolution?Yes___No___Display images in the actual physical size as on the detector by using the imager pixel spacing attribute and the physical size of the monitor in calculations? (“true size” mode)Display image pixels such that one pixel on the monitor’s resolution equates to one pixel of the detector resolution? (1:1 pixel mode)
22Workstations Display & Contrast Adjustment Can the workstation be calibrated according to the DICOM Grayscale Display Function which site control over maximum and minimum luminance?Yes___No___When adjusting contrast and inverting image pixels, can the workstation keep the air gap black.Use imager pixel padding value multiplied by radiographic magnification for the basis of measurement tools?Does the workstation provide a method to render and apply all available window/center, VOI LUTs, or VOI LUT Function attributes?Will you get the grayscale right?Can you keep the air gap (non breast tissue) area black during contrast adjustments and inversions?Will my measurements be correct?
23PACS / Archive Data Requirements Does your archive:Support storing and returning in tact all attributes for DICOM Digital Mammography-for presentation image objects?Yes___No___Support storing and returning in tact all attributes DICOM Digital Mammography for processing image objects?Support storing and returning in tact all DICOM Mammography CAD Structured Reports?Knowingly add, change, or delete any DICOM attributes related to the above objects? If so, explain______________________________Can I store all the data necessary to support digital mammography on my PACS?Can I get back out all the data that I stored, or has it been modified in some way?Is it possible that a PACS data modification could break the functionality of other components?
24Print Application Modality, Workstation, or PACS Can your product print film with:The proper maximum density?The proper physical size?Annotations per MQSA requirements?Minimum to no border at chestwall?When printing:Does your product use the Imager Pixel Spacing attribute to send the Requested Image Size attribute to the printer (a.k.a. true size printing)?Yes___No___Does your product justify the chestwall to the edge of the image before printing?Can your product send the maximum density attribute to the printer for mammography images, recognizing that it is likely different than that used for other modalities?
25Printers Can your printer: Print images “true size”? Print at a maximum density appropriate for mammography?Print with minimal borders at the chestwall?Can your printer:Print true size based on the Requested Image Size (2020,0030) within a precision of a maximum 2% error in linear distance?Yes___No___Justify and print mammography images such that film borders are less than 5mm at the chestwall (edge of the image)?Apply the requested Maximum Density attribute, printing with a maximum optical density no less than 3.5?
26CAD SystemCan your CAD system:Provide results using the Mammography CAD Structured Report DICOM object?Yes___No___Send results to both PACS and workstations automatically?Use DICOM Storage Commitment transaction for reports sent to any destination?How can I have confidence in the sending and receipt of CAD results?
27Summary Educate yourself on what to ask for Ask vendors about their commitment to IHE MammoGet a copy of the existing IHE Users HandbookGet a copy of the IHE Mammography User handbook – RSNA 2006Have technical resources read the IHE Mammo Technical FrameworkEducate yourself on what to ask for – better yet, make sure that you tell your PACS techie your requirements & get him or her to educate themselves on IHE specificsAsk vendors about their commitment to IHE Mammo – be specific about IHE MAMMO – there are many flavors of IHE and you want to make sure you’re talking about the same details
28More information…. IHE Web site: http://www.ihe.net Technical FrameworksUsers HandbooksIHE Fact Sheet and FAQIHE Integration Profiles: Guidelines for BuyersIHE Connect-a-thon ResultsPresentationsVendor Products Integration Statements