InPronto - Calibration Guidelines

Calibration JIG Specifications


Calibration JIG Specification

Computed tomography (CT) imaging involves the use of both x-ray equipment and a digital computer to produce images of the body. CT imaging has the unique capability to offer clear views of soft tissue, bone, muscle, and blood vessels. Cone Beam CT scans are advantageous as they are able to differentiate between various types of tissue and can identify infections and even tumors. The Cone Beam CT scan is a cost effective way to visualize the anatomy and plan the proper treatment while taking any risks into account. The CT scanner is calibrated to correct for beam hardening in tissue. Follow the steps below and discover how easy it is to scan the calibration jigs and upload the information.


Dimensions of External Field of View:
      Height - 5.25in
      Width - .039in
      Length - 5.5in
Dimensions of Internal Field of View:
      Height - 5.25in
      Width - .039in
      Length - .157in


Each Calibration Jig is made of FDM ABS Plastic, which is strong and durable. Fused Deposition Modeling uses Acrylontrille Butadiene Styrene, a shiny plastic, in a layered manufacturing method that extrudes a thin bead of plastic one layer at a time. The melted material is deposited by the extruder, cools, bonds and hardens. Each jig has 13 bb’s roping around the outside diagonally.

Calibration Jig Scanning Steps:

1. Timing - Scan each jig separately.

2. Scan Settings – Apply patient scan settings, and ensure the slices are .25 to .3mm.

3. Secure Foam - Secure 1in thick square piece of foam on the chin holder.

4. Secure External Jig - Place External Field of View jig on top of the foam and scan it.

5. Secure Internal Jig – Place Internal Field of View jig on top of the foam and scan it.

6. Export Files - Create two folders locally on your drive as

  • External Field of View – Export and save .DCM format.
  • Internal Field of View – Export and save .DCM format.

7. Data Upload – Follow the steps described in data upload section.

Data Upload:

Follow these steps to upload the data to InPronto FTP servers:

1. Contact InPronto to acquire FTP access rights.

2. Open Windows Explorer and in the address bar, type

3. Login with your assigned credentials.

4. Locate the folder on your Hard Drive to upload to InPronto’s FTP server.

5. Drag and drop the folder from your Hard Drive into your InPronto’s assigned directory.

Note: Be Sure to upload the calibration JIG DICOM files before uploading any patient's files.