Where do I start and stop the scan on subjects?
The scan range must be set to only include the lung field. Scans that exceed 2cm above the apices or 5cm below the costophrenic angles will be reviewed and reported.
What is the proper order for scan acquisition (scouts/topograms and series acquisitions)?
For the Standard, BMI dose-based protocols: AP/PA scout at TLC: verify anteroposterior iso-centering and locate TLC scan endpoint Lateral scout following TLC breath hold: verify right-to-left iso-centering, and select scan start point TLC scan Lateral scout following RV breath hold: locate RV scan endpoint RV scan For the Reduced dose, dose modulated protocols: Lateral scout at TLC:
Would I ever rescan a subject for motion, clipped anatomy, and/or breath hold issues?
The subject should never be rescanned to correct acquisition-based issues such as motion, clipped anatomy, or breath hold.
Why am I required to complete additional training for another trial?
Even if the site is familiar with VIDA and its practices, the site should still be trained on project specific workflows and the scanning sequence for the additional trial. This can be completed with a shortened training discussing project specific information (provided the site is in good quality standing).
What parameters cannot be scrubbed during anonymization (test object/ subjects)?
Please do not scrub the station name, pitch, interval, thickness, kVp, dose, SFOV, DFOV, dose mod, model, acquisition date/ time, recon algorithms, rotation time, software version, or the detector configuration.
What do I do if my scanner cannot be set to one of the recommended parameters?
Please Contact VIDA support prior to scanning.
What reconstruction window do I use to reconstruct?
The window is not a required setting. Please use what is commonly used at your site.
I started scanning the subject and they didn’t hold their breath. Can I re-scan them?
No. Please document this on the case report form (CRF).
What breath holds do you require?
We require a full inspiratory (TLC) and a full expiratory breath hold (RV). Please refer to the CT reference guide (protocol) or Radiology Manual for additional details. You may also access a breath hold training video on our website at: https://vidalung.ai/training/
What if my patient can’t lie in the supine position?
Subjects that cannot lie in the supine position would not be a candidate for the QCT portion of the trial.