Multi-Purpose X-ray System, Phase II

Metadata Updated: May 2, 2019

The proposed Multi-Purpose X-ray Source and System (MPXS) can be used on flight missions, space stations, planetary excursions and planetary or asteroid bases, to meet nearly all NASA imaging needs in the Exploration Medical Condition List (EMCL). This includes a range of radiographic imaging modalities - 2D, digital tomosynthesis and half or full CT to cover routine and emergency imaging needs. The MPXS source is comprised of sections, each designed for a specific range of x-ray imaging conditions. The source is currently designed as a rectangular box made primarily of aluminum nitride (AlN) sheets. Each AlN sidewall has a window that allows x-ray flux to exit. The window can be a hollow section of the sidewall or a thin strip of low Z material over a window aperture in the sidewall. Thin strips of metal can be placed over the windows for beam filtration. Each window will output flux from one or more rows of spots (x-ray pixels, or xels) on the metal anode inside, for example a 1 x 30 xel row. These xels are digitally addressed with separate electron beams from field emission cold cathodes in the cathode array. The system will comprise one or more sources, paired with one or more digital x-ray detectors, controlled by software loaded on a laptop or mission systems. Each pair will weigh less than 0.1% of a current tomographic imaging system in less than 0.1% of the volume. Extensions to the source design can reduce these figures even further. The programmability of the x-ray flux sequences/patterns from the sources will enable the range of imaging modalities, and make MPXS well suited to use with emerging AI capabilities in radiographic diagnosis.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_93663
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id defa798a-5d0c-4d37-a4e0-fb48f76e106c
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2018-10-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 7be626a7bd24e3e012d6a3b3de9618e3d02a5d24
Source Schema Version 1.1

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