An observational study in Ultra-low-dose CT and Thoracic, sponsored by Philips Electronics Nederland B.V. acting through Philips CTO organization. Terminated at 1 site in Netherlands. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-08-29.
Sponsored by Philips Electronics Nederland B.V. acting through Philips CTO organization · Observational
An ultra-low-dose CT(ULDCT) image viewer prototype was developed in an iterative fashion that aims to reduce average interpretation times of ULDCT images. Ultimately, by reducing reading time of ULDCTs, we aim to enable general replacement of X-ray by ULDCT imaging, which is theorized to have large population-level health outcome impact in terms of early detection of lung cancer, coronary calcification, and aortic aneurysm, among others.
Philips Electronics Nederland B.V. acting through Philips CTO organization is the lead sponsor of 17 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Subjects are not patients, but diagnostic radiologists, diagnostic radiology fellows, and diagnostic radiology residents employed, formally employed by LUMC or visiting LUMC who read CTs and x-rays as part of clinical workflow.
Exclusion Criteria:
Device: ULDCT PACS prototype · Device: PACS viewer prototype · Device: Optimized ULDCT viewer prototype version(s)
The ULDCT viewer prototype is a non-medical unreleased device that will be used by study participants on de-identified image cases in a research setting. The Prototype integrates new tools to speed up the diagnostic interpretation process of radiological images.
A PACS system mimicking the clinical PACS system used in LUMC.
The ULDCT viewer prototype is a non-medical unreleased device that will be used by study participants on de-identified image cases in a research setting. The Prototype integrates new tools to speed up the diagnostic interpretation process of radiological images. Optimized version(s) of previous version.
Radiologist interpretation time
Average radiologist interpretation time (seconds / minutes) of all cases in the two applications. This Outcome Measure is measured through activity log of the prototype.
Time frame: Measured per reading session of about 4-5 hours (maximum 10 hours) and detailed out per CT reading case of about 3-20 minutes.
Confidence
Average radiologist confidence of all cases in the two applications. This Outcome Measure is measured through a questionnaire with responses on Likert scale.
Time frame: Measured per reading session of about 4-5 hours (maximum 10 hours) and detailed out per CT reading case of about 3-20 minutes.
Usability and user experience
Radiologist perceived usability feedback per prototype application through System usability scale (SUS), observed user errors per reading session (%), and open-ended feedback from a semi-structured interview summarized qualitatively. SUS scores are compared between prototype applications and influence of learning/time on the SUS is analyzed. Region of interaction. Frequency and duration eye tracking.
Time frame: Measured per reading session of about 4-5 hours (maximum 10 hours) and detailed out per CT reading case of about 3-20 minutes.
Emotional state
Average radiologist emotional state per case and per prototype application via video captures and gaze tracking. Emotional state is compared between prototype applications.
Time frame: Measured per reading session of about 4-5 hours (maximum 10 hours) and detailed out per CT reading case of about 3-20 minutes.
Arousal state
Average radiologist arousal state per case and per prototype application via wrist-based biometrics (heart rate variability in miliseconds, heart rate in beats per minute (bpm), skin conductance in uS), and eye tracking pupil diameter in milimeters.
Time frame: Measured per reading session of about 4-5 hours (maximum 10 hours) and detailed out per CT reading case of about 3-20 minutes.
Wrist band based biometrics
Average radiologists' heart rate, heart rate variability and skin conductance compared between cases read per prototype applications.
Time frame: Measured per reading session of about 4-5 hours (maximum 10 hours) and detailed out per CT reading case of about 3-20 minutes.
Plan to share: Undecided
No publications or documents are linked to this record.
This study is terminated, as verified in Aug 2023. You cannot join it, but the record below documents what was studied.
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Philips Electronics Nederland B.V. acting through Philips CTO organization