---
title: The Role of Audiovisual Biofeedback on Image Quality During 4D Anatomic and Functional Imaging
nct_id: NCT01172041
overall_status: COMPLETED
sponsor: Stanford University
study_type: OBSERVATIONAL
primary_condition: Lung Cancer
countries: United States
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT01172041.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT01172041"
ct_last_update_post_date: 2016-07-01
last_seen_at: "2026-05-12T06:20:51.485Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# The Role of Audiovisual Biofeedback on Image Quality During 4D Anatomic and Functional Imaging

**Official Title:** Investigating the Role of Audiovisual Biofeedback on Image Quality During 4D Anatomic and Functional Imaging

**NCT ID:** [NCT01172041](https://clinicaltrials.gov/study/NCT01172041)

## Key Facts

- **Status:** COMPLETED
- **Study Type:** OBSERVATIONAL
- **Target Enrollment:** 10
- **Lead Sponsor:** Stanford University
- **Conditions:** Lung Cancer
- **Start Date:** 2010-07
- **Completion Date:** 2013-06
- **CT.gov Last Update:** 2016-07-01

## Brief Summary

This study will investigate whether audiovisual biofeedback, in which visual and audio cues are used to regulate the patient's breathing, can increase the image quality of 4D CT and 4D PET scans.

## Eligibility

- **Minimum age:** 18 Years
- **Sex:** ALL
- **Healthy Volunteers:** No

```
Inclusion Criteria:

Required for inclusion in this study are:

* Informed consent
* Diagnosis of AJCC Stage I-III lung cancer of any histology to be treated using radiotherapy at Stanford Cancer Center
* Age 18 or greater
* Painfree in supine position
* Karnofsky performance status 50 or greater

The inclusion of educationally disadvantaged, decisionally impaired or homeless people are allowed if informed consent, in the opinion of the consenting investigator (study PI, co-PI or research nurse), is obtained.

Exclusion Criteria:

No

* Pregnant women
* Stanford employees
* Stanford students
* Prisoners will be eligible for the study.
```

## Interventions

- **Real time position management system** (DEVICE) — Device to monitor respiration by using optical monitoring of a marker block placed on the abdomen of the patient.
- **LS PET/CT** (DEVICE) — PET/CT scanner for acquiring CT and PET images (3D and 4D)
- **18-FDG** (DRUG) — 15mCi

## Primary Outcomes

- **Measure the difference in number of artifacts on 4D CT scans using audiovisual biofeedback in comparison to Free breathing.** _(time frame: Day one)_ — The first, third, fifth seventh and ninth patients accrued to the protocol will have their free breathing studies performed first. The second, fourth, sixth, eighth and tenth patients accrued to the protocol will have their audiovisual (a/v) biofeedback studies performed first.

## Locations (1)

- Stanford University School of Medicine, Stanford, California, United States

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.stanford university school of medicine|stanford|california|united states` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT01172041.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT01172041*  
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