Micro-CT Facility

Why micro-CT?

Micro CT scanning allows users to collect a series of 2D projections as the sample is rotated, and reconstruct these projections to create a 3D volume. This volume can then be digitally manipulated to resolve micron-level details of a given sample, allowing users to non-destructively examine both the external and internal structure/composition. Thus, micro CT can be a valuable tool for a wide range of disciplines.

What types of samples can be scanned?

Biological/organic

• • Mineralized material (e.g., bone, shells, etc.) can be scanned without any additional preparation
  • Non-mineralized material (e.g., plant roots, chitinous exoskeletons, and soft tissues) must be stained with a contrast agent prior to scanning.

Geological

• • Rocks
  • Minerals
  • Core samples

Engineering

• • Metallic parts
  • Machine parts

…but these are just some examples–many different types of samples and materials can be scanned and analyzed!

Questions about the utility of micro CT for your project? Contact us!

Capabilities & Specifications

Maximum sample size:

• • Max. dimensions: At the lowest magnification, the dimensional limits for a given sample are 450mm width by 350mm height (roughly the size of a domestic cat). However, it is possible to perform piecewise scans of larger samples and stitch them together following reconstruction of the volumes
  • Max. weight: 50kg (110lbs.)

Tungsten target, two interchangeable target heads:

• • 225kV Reflection target with focal spot size down to 3 microns
  • 180kV Transmission target with focal spot size down to 1 micron

Maximum 225kV for high absorbing samples (e.g., metallic samples, dense minerals)

Maximum frame rate of 30fps

Scan types:

• • Circular scan (full 360 rotation)
  • Half-turn scan
  • Tall scan (multi-part scans of large samples that exceed the vertical FOV)
  • Batch scan
  • 2D radiography

Scheduling

Users who wish to schedule time in the USU Micro CT facility should fill out the following forms:

1. Initial Request (new users only)
2. Scheduling Request

User Types and Descriptions

1. On-Campus User in Training – This rate category is for users from on-campus units who have not yet been trained on proper use of the microCT scanner and workstation. The higher rate for this user category relative to the on-campus trained user category reflects both the use of the machine and the time required of the Lab Manager for training (before, during, and after scanning and reconstruction).
2. On-Campus Trained User – This rate category is for users from on-campus units who have received training on proper use of the micro CT scanner and reconstruction workstations. Each user must complete at least three Lab Manager-supervised scans and demonstrate proficiency in set-up, acquisition, and reconstruction of scans prior to being certified as a “trained user” of the instrument. Once this status is achieved, Trained Users may request prox card access for unsupervised and/or after-hours use of the facility.
3. Technician Performed Scans – This rate category is for users that deliver a sample to the Lab Manager for scanning and reconstruction, and applies to both on-campus customers and off-campus/external/commercial customers. The Lab Manager scans the sample on behalf of the customer, reconstructs it using the onsite workstation, and supplies the customer with a file containing the projections, scan parameters, and the reconstructed volume (in both the VG Studio file format, and as an image stack). The customer does not need to be present during scanning/reconstruction.
4. Analysis – After the scan(s) is/are completed and reconstructed, users may access the on-site workstations and software for analysis and 3D rendering.

Definitions:

On-Campus User: Applies to anyone who is enrolled or works at USU regardless of funding source

USU Affiliate User: Space Dynamics Lab

External User: Any entity such as Thermo Fisher or a non-USU affiliate/on-campus unit or person

 

 

Facility Usage Rates*

MicroCT Rate Categories	cost
On-Campus User in Training	$30/hr
On-Campus Trained User	$18/hr
Technician Performed Scan	$58/hr
Off-Campus/External/Commercial	$125/hr

Workstation Rate Categories	cost
On-Campus User in Training	$6/hr
Off-Campus/External/Commercial	$20/hr

*rates are subject to change as they are based on the actual expense of running the facility