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[Amatista Sheeley]

TheCOVID-19 peacetime emergency ends on July 1, 2021. All registrants affected by equipment performance modification of existing COVID-19 waiver or modification under Minnesota Session Laws - 2020, Regular Session, chapter 74, article 1, section 13, must return to normal statute and rule compliance on July 30, 2021. Registrants are strongly encouraged to begin the necessary planning for this transition as soon as possible and should contact x-ray unit at healt...@state.mn.us with questions.

The Minnesota Department of Health (MDH) is issuing an Information Notice to inform Limited Scope X-ray Operators and Bone Densitometry Equipment Operators that effective August 1, 2020, the X-ray Unit will no longer accept the American Registry of Radiologic Technologist (ARRT) fees. X-ray Operators must:

The Minnesota Department of Health (MDH) is issuing an Information Notice to inform Limited Scope X-ray Operators and Bone Densitometry Equipment Operators to the recent law changes in Minnesota Statute, 144.121 that they are required to register with MDH for passed module examinations. The 2020 Legislature authorized this law and it will be effective August 1, 2020.

The Minnesota Department of Health (MDH) is issuing this Information Notice (IN) to inform correctional or detention facilities to the recent law changes to Minnesota Statute, 144.121 involving the use of security screening x-ray equipment for human use.

The 2019 Legislature authorized the use of security screening x-ray equipment to image and identify contraband items concealed within or on all sides of a human body. A facility must have a granted variance to Minnesota Rules, Chapter 4732 and meet the requirements before first use of the security screening x-ray equipment.

The Minnesota Department of Health is considering amendments and possible new rules for Ionizing Radiation, Chapter 4732. None of the changes expressed in the rule revision documents have been made to Chapter 4732 or are adopted at this time. For more information, please visit our rules webpage below.

Minnesota Rule Chapter 4732 strives to control and prevent hazards to health and safety from ionizing radiation, without limiting or interfering with its constructive uses. Except as otherwise specifically provided, this chapter applies to all persons who receive, possess, use, transfer, own or acquire any radiation-producing equipment. The scope of this chapter does not include those sources of ionizing radiation known as radioactive materials, which are covered by Chapter 4731.

The mission of the Radiation Control, X-ray Program is to protect and promote radiation safety through guidance and collaboration with the radiation community. Our vision is to reduce unnecessary radiation exposure from the use of ionizing radiation producing equipment.

Facilities in Minnesota with ionizing-radiation producing x-ray equipment must be registered with the Minnesota Department of Health, Radiation Control, X-ray Unit. X-ray fees cover the costs of running a statewide registration, compliance and education program, as well as to maintain and protect the health and safety of occupational workers and the general public. The fees are approved by the legislature and are mandated under Minnesota Statute 144.121.

Do not use this form to report administration changes or adding new equipment to an existing registered facility.

This form is only for new site owners. Administration or equipment changes to existing registered facilities should be made in the online X-ray Registration System. If you have questions, contact healt...@state.mn.us before sending in the form and payment.

Facilities not registered with MDH, are under new ownership, or have satellite offices that have not been registered, must fill out the Initial Registration Form and submit payment by mail. New facilities obtaining x-ray equipment must pay fees and register their facility prior to first use of the equipment.

Facilities that are currently registered with MDH and have new equipment are required to register the new equipment with MDH in the online Registration System within 30 days and prior to first use of the equipment.

Facilities that transfer x-ray equipment from one of their registered locations to another should delete the console at one site, and add the console at the other site in the online Registration System. Refer to the documents under Registration System for guidance.

Facilities that have a change in facility information to their demographics, contacts or equipment should make that change in the online Verification System. Refer to the documents under Registration System for guidance.

The compiler-inserted instrumentation points come in the form of nop-sleds inthe final generated binary, and an ELF section named xray_instr_map whichcontains entries pointing to these instrumentation points. The runtime libraryrelies on being able to access the entries of the xray_instr_map, andoverwrite the instrumentation points at runtime.

The loop detection can be disabled with -fxray-ignore-loops to use only theinstruction threshold. You can also specifically instrument functions in yourbinary to either always or never be instrumented using source-level attributes.You can do it using the GCC-style attributes or C++11-style attributes.

The XRay Runtime Library is part of the compiler-rt project, which implementsthe runtime components that perform the patching and unpatching of insertedinstrumentation points. When you use clang to link your binaries and the-fxray-instrument flag, it will automatically link in the XRay runtime.

The default implementation of the XRay runtime will enable XRay instrumentationbefore main starts, which works for applications that have a shortlifetime. This implementation also records all function entry and exit eventswhich may result in a lot of records in the resulting trace.

__xray_log_init_mode(...): This function allows for initializing andre-initializing an installed logging implementation. Seexray/xray_log_interface.h for details, part of the XRay compiler-rtinstallation.

Like all the other modes installed through __xray_log_select_mode(...), theimplementation can be configured through the __xray_log_init_mode(...)function, providing the mode string and the flag options. Basic-mode specificdefaults can be provided in the XRAY_BASIC_OPTIONS environment variable.

The default settings for the FDR mode implementation will create logs namedsimilarly to the basic log implementation, but will have a different logformat. All the trace analysis tools (and the trace reading library) willsupport all versions of the FDR mode format as we add more functionality andrecord types in the future.

NOTE: We do not promise perpetual support for when we update the logversions we support going forward. Deprecation of the formats will beannounced and discussed on the developers mailing list.

convert: Converts an XRay log file from one format to another. We canconvert from binary XRay traces (both basic and FDR mode) to YAML,flame-graph friendly textformats, as well as Chrome Trace Viewer (catapult) formats.

llvm/XRay/Trace.h : A trace reading library for conveniently loadingan XRay trace of supported forms, into a convenient in-memory representation.All the analysis tools that deal with traces use this implementation.

XRay supports several different instrumentation points including function-entry,function-exit, custom, and typed points. These can be enabled individuallyusing the -fxray-instrumentation-bundle= flag. For example if you only wanted toinstrument function entry and custom points you could specify:

This will omit the other sled types entirely, reducing the binary size. You can alsoinstrument just a sampled subset of functions using instrumentation groups.For example, to instrument only a quarter of available functions invoke:

Work is in progress to integrate with or develop tools to visualize findingsfrom an XRay trace. Particularly, the stack tool is being expanded tooutput formats that allow graphing and exploring the duration of time in eachcall stack.

With a large instrumented binary, the size of generated XRay traces canquickly become unwieldy. We are working on integrating pruning techniques andheuristics for the analysis tools to sift through the traces and surface onlyrelevant information.

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