Electromagnetic Tracking of Devices During Interventional Procedures - A Cryoablation Study
Public ClinicalTrials.gov record NCT01401777. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The objective of this study is to assess and quantify any differences between assisted (using real-time visualization of tracked cryo-probes) and unassisted cryoablation procedures using pre-procedure CT scans or CT fluoroscopy with respect to: Primary Endpoint: • "TRE" Target Registration Error (distance between "virtual" needle position (tracking data) and the actual needle position (CT confirmation scan)) Secondary Endpoints * Accuracy of needle targeting - The vector of each needle insertion (The initial vector allows us to project the path to the pre-defined target. If the initial entry point is not ideal, the path to the target will need adjustment) Based on a two-sample t-test (significance level of 0.05, two-tailed), the study has 89% power to detect a difference of 2mm in accuracy between the two treatment groups (assuming a standard deviation of 1.9mm). * Measure time difference between assisted and unassisted procedure
Study identification
- NCT ID
- NCT01401777
- Recruitment status
- Withdrawn
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years to 100 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Nov 30, 2014
- Primary completion
- Apr 30, 2015
- Completion
- Nov 30, 2015
- Last update posted
- Apr 26, 2021
2014 – 2015
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Cleveland Clinic | Cleveland | Ohio | 44195 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01401777, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 26, 2021 · Synced Sep 19, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01401777 live on ClinicalTrials.gov.