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I attended Pathology Visions last week (more on that later…) which is organized by the Digital Pathology Association (DPA). The DPA released on Tuesday two white papers; 1) Interoperability between Anatomic Pathology Laboratory Information Systems (APLIS) and Digital Pathology Systems and 2) Archival and Retrieval in Digital Pathology Systems.
The white papers are good and provide vendor neutral information to help the digital pathology industry and consumers. Here are the abstracts and a few of my favorite points from each:
Archival and Retrieval in Digital Pathology Systems
This white paper frames the issues related to Archival and Retrieval of images and associated data as Anatomic Pathology laboratories adopt a digital imaging workflow in a research or clinical setting. This overview also includes a brief discussion of some of the solutions being developed and offered in digital pathology systems (DPS’s).
DPS’s start with creation of a whole slide image and provide an imaging workflow for pathologists by associating the images with a patient and case and furnishing the tools to review the cases digitally. Whole slide images (WSI) are very large and will drive the need for extensive storage and information life cycle management. Customers seek options for fast access to high quality and highly available data, when they use the DPS in a business critical application. Most importantly, since DPS’s are deployed in regulated environments, data reliability, privacy, and security need to be built into the solution and its management process.
Solutions that are being developed and deployed in digital pathology systems are also presented.
Favorite points:
Interoperability between Anatomic Pathology Laboratory Information Systems and Digital Pathology Systems
This white paper offers an overview of the current state of interoperability between Anatomical Pathology Laboratory Information Systems (APLIS’s) and Digital Pathology Systems (DPS’s). This overview also includes a brief discussion of future work that will impact interoperability.
Both systems rely on data from the other to efficiently deliver full digital imaging functionality to the healthcare provider. Anatomic Pathology (AP) departments and patients will benefit most from imaging workflow when there is a high degree of integration of Digital Pathology information within AP workflow. Implementations of such data sharing already exist via interfaces and standard communication protocols between APLIS’s and DPS’s, and work continues on these interface standards to improve the degree to which these systems can be used together.
The current state of interoperability provides Pathologists with access to images and image analysis data from within the APLIS or the DPS. This information is then available to the Patient Report.
Below is an article I wrote for ADVANCE for Laboratory Professionals, Perspectives In Pathology.
By Amanda Lowe
Digital pathology is often described as the scanning of a glass slide into a whole slide image; yet, it is much more. It is so much more, in fact, that pathologists and laboratory professionals find themselves puzzled with how it will affect their future. As technology progresses, we must start to understand how to put the pieces of it together—from acquisition to integration to data management and interpretation.
Acquisition
Acquisition of a whole slide image from a glass slide is done on a slide scanner, which creates the image necessary for interpretation. Important elements of slide preparation and patient information can make the acquisition process simple or complex.
Slide preparation is a crucial and often overlooked element of digital pathology. Pathologists can handle slide artifacts such as folds and air bubbles under a microscope; slide scanners are not always as forgiving. Also, staining has to be perfected, not only for scanning but for accurate interpretation and use with image analysis software. Poor staining can result in tissue not being scanned, inaccurate image analysis data—and in the worst case—a wrong diagnosis.
Traditionally, when glass slides are prepared, they are manually matched with the patient paperwork (including patient history, requisition and gross review), then delivered to the pathologist. With digital pathology, the process looks different. You now have whole slide images that need to be reconciled to the digital patient paperwork, then delivered to the pathologist. The only way to do this is with a laboratory information system (LIS), electronic medical record (EMR) integration, and bar codes. Bar codes will reduce human error, save time on the constant need for verification and re-checks, and improve quality assurance by tracking all specimens throughout the histology process.
Integration
The LIS and often the EMR need to share information with the digital pathology software to create a pathology picture archiving and communication system (PACS) that consolidates all patient paperwork, gross images and whole slide images for interpretation. This is the most important but also the most difficult piece for labs to handle. The process can be costly and require collaboration of two or more vendors, which can be a frustrating and hard process to manage. However, it can be accomplished with a plan, a budget and someone to manage the project.
Data Management
Many hospitals do not have adequate IT resources or the expertise to handle their already stressed storage demands. Yet these whole slide images have to be stored somewhere. Unfortunately, most IT departments do not understand the fundamentals of digital pathology. Pathology leaders and their lab personnel must improve communication with their IT departments and take an active role in educating IT on the realistic needs of the department now and over the next five years. Hospitals have to prepare for the increase in lab data and pathology images that will soon be their future.
To estimate your whole slide image storage needs, divide the number of surgical slides your lab generates per year by 3,500 to get an estimate of terabytes needed annually; 3,500 is the average number of whole slide images per one terabyte.
Healthcare providers are required to save medical records for a specified time; for most, this is a minimum of seven years. Security is not optional, and HIPAA mandates backup and disaster recovery plans for patient records, including all medical images. The specialty of pathology will not be an exception to the rule.
Interpretation
One goal of digital pathology is to enhance the sign-out process for pathologists. Pathologists should be able to sit down at a computer monitor to sign out digital cases retrieved from a pathology PACS system. Easy access to archived cases for disease progression or comparison, rapid case sharing and consultations, data mining for decision support and image analysis will all help improve the diagnostic process.
Powered by the rapid and endless growing portfolio of image analysis algorithms, pathology will transition from a qualitative to a quantitative discipline. Digital pathology partnered with image analysis will create the infrastructure necessary so pathologists can confidently determine the severity of a disease and predict responses to a target therapy.
Digital pathology streamlines laboratory workflow, enhances the sign-out process, and can improve diagnostic outcomes and treatment responses for patients while at the same time forge a new foundation for the use of pathology data to drive translational research and higher standards of care.
Five years ago at the United States and Canadian Association of Pathology (USCAP) annual meeting, I was working for one of two slide scanner manufacturers exhibiting in a small booth trying to gain exposure and sell systems. A few years later, there were four or five companies, and this year there were SIXTEEN companies exhibiting digital pathology hardware and/or software solutions. For the small group of people who have been in this industry for a long time, it’s amazing to see how far the field has evolved. Here are a few of my digital pathology highlights from USCAP ’10.
A Step Forward
WG-26 met on March 20th to finalize Supplement 145, Whole Slide Imaging for Pathology, for submission to WG-6 who coordinates all changes to DICOM. On March 25th, WG-6 approved the supplement, and it will go out to letter ballot within the next two weeks for a 49 day voting period. Assuming a successful outcome, DICOM for whole slide images will be finalize this summer. Many thanks to WG-26 for all of their hard work over the past five years as this standard will improve data management, interoperability, and workflow within pathology.
The Bandwagon
Several new companies were at USCAP this year offering digital pathology solutions including Leica, Philips, Motic, CRi and MikroScan Technologies. Laboratory Information Systems (LIS) and middleware companies were highlighting integration with digital pathology companies increasing interoperability for pathology departments. In addition, numerous reference and contract laboratories were demonstrating their use of digital pathology to stay competitive and allow earlier and flexible access to images and their data. Lastly, current market leaders Aperio, Bioimagene, Olympus, and 3DHistech were demonstrating impressive portfolios of hardware, software, and workflow solutions in their large, expanded booths.
Diagnostic Displays
If you visited the exhibit hall and met with any digital pathology companies, likely you were looking at whole slide images on a Barco diagnostic display. I recently posted about diagnostic displays, and how they could play a key role in the future of digital pathology, and it was nice to see the industry support and response to diagnostic displays.
Whether it was during sessions, reviewing posters, walking the exhibit hall, or in conversations with colleagues; digital pathology was definitely a hot topic. With all this excitement and advancement I cannot wait to see where we are next year, and to see who else will jump on the bandwagon!
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I recently participated in an audio conference, provided by The Dark Report titled “New Opportunities for Your Lab’s LIS-EMR Interface: How to Profit From the Big Wave About to Hit Healthcare.” The “Big Wave” is simply, the massive increase of physicians who will adopt a certified EMR system within the next 5 years. In 2009, approximately 25,000 practices adopted an EMR, bringing the total physician adoption to approximately 30% nationwide. If the stimulus plan reaches it’s goal of 90% adoption by 2015, then adoption is going to more than double, with around 60,000 practices adopting per year starting this year. But what does this mean for laboratories?
For a physician to get up to $44,000 in reimbursement dollars, available through Medicare, they must prove “meaningful use”. There are three items on the “meaningful use” checklist that pertain to laboratories for phase 1, and they are:
Basically lab orders have to be loaded up, set up in that EMR and adopted by the practice and its employees; lab results have to be deployed, and the lab reports will have to be shared with a public health agency. It’s the first step in this process though that is going to have the largest impact on laboratories as their customers, physician practices, are going to be demanding integration. Thus, laboratories can either hope that their LIS will integrate with the physicians new EMR easily (but is IT integration ever easy?), or they can proactively use this opportunity to grow business and strengthen relationships with their practices. Given that there are currently 11 certified EMR companies and an additional 30 pending certification, it is likely that your LIS will not support them all. You must become proactive! So what do you do to manage the “Big Wave” about to hit laboratories?
Overall, be an informed leader in the process and don’t just wait for the “Big Wave” to hit you.
This information was presented by Pat Wolfram, Vice President of Marketing & Customer Services at Ignis Systems Corporation and Ruth Johanson, Information Technology Program Director at Providence Health & Services. If you are interested in hearing this audio conference you can purchase a CD at The Dark Report, click here to learn more.
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