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Apple Cinema Display 2 Result: 232.1
Category A target: > 200
Category B target: > 120
Result: 331.57
Category A target: > 100
Category B target: > 40
Result: 11.5%
Category A target: ± 15%
Category B target: ± 20%
Display Quality Conrmed
The Apple Cinema Displays passed all the required tests and were approved for
diagnostic use. One display panel, however, featured a somewhat nonuniform display
characteristic and must be tested more frequently than every 90 days. This may lead
some facilities to reserve the use of this system for Category B applications, although
the display did meet prescribed standards for all applications.
Conclusion—Apple Cinema Displays meet image quality requirements for radiology
reporting in all application categories. The Apple displays met all standards, including
grayscale presentation standards, and passed conformity tests. Constancy tests also showed
that the displays met standards for brightness and contrast. However, in homogeneity tests,
variations in luminance in the panel corners call for more frequent constancy testing in the
future. The Apple Cinema Display antireection coating also causes a slight blurring eect
on brighter parts of chest X-rays. Response from radiologists to this limited phenomenon
varied, and many found it had no negative impact. (We recommend that forthcoming
Apple Cinema Display models be reevaluated regarding homogeneity and coating.) These
few shortcomings may lead some facilities to reserve the use of this system for Category B
applications. With the availability of display-independent calibration software, users can
implement other display types for Category A applications.
OsiriX Software Installation and PACS Integration
To view and postprocess radiological images, the team had to install OsiriX imaging
software and integrate the workstation into the hospital’s PACS.
Certied Viewing Software: Meeting FDA and CE Regulations
In most countries, software used for medical image reading has to fulll certain legal
requirements. These include developing the software in a well-dened and managed
process and under quality and risk management controls. Requirements also cover
such aspects as software documentation (DICOM conformance statements, technical
and user documentation, etc.) and an incident management system. Using a system
developed according to these standards results in reliable, reproducible, and consistent
outputs under stable conditions.
The uid nature of open source software development, however, makes such a process
dicult. Ongoing community development means that open source code can change
constantly, and these changes may render the application unstable—and would also
make any QA result invalid.
Fortunately, third-party institutions can select a dened development state of an
application and use that version for bug xes, enhancements, and modications.
Once the software clears the processes required for use under U.S. FDA and European
CE regulations, the application can be oered as a complete solution with software,
manual, service, support, and more. This enables hospitals to acquire OsiriX versions
that have been processed according to either U.S. or European regulations.
The Open Source OsiriX version may be used for some professional clinical work, but
this is not recommended, as any malpractice issues caused by software errors must
then be handled by the user.
aycan workstation OsiriX
PRO
aycan workstation OsiriX
PRO
is a modied
version of OsiriX from aycan (www.aycanus.com,
www.aycan.de). (See Figure 9.) The software has
earned 510(k) clearance for use as a medical
device according to the United States Food and
Drug Administration (510(k) Number: K063470),
and it has a CE certicate for use throughout
the European Economic Community and Turkey.
Available commercially, aycan workstation
OsiriX
PRO
incorporates bug xes and validated
and exclusive plug-ins. Furthermore, the software
comes with a comprehensive user manual, a com-
puter-based training CD, and
various training and service options.
Figure 9: aycan workstation OsiriX
PRO
has earned
FDA clearance and has a CE certicate, clearing
it for use in hospitals in the United States and
Europe. Here, the solution is used for postprocess-
ing an Angio CT using 3D Volume Rendering.
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