# Reduced Planning Target Volume (PTV) Margins for the Treatment of Prostate Cancer Using the Calypso 4D Localization System

> **NCT01589939** · — · UNKNOWN · sponsor: **U.S. Army Medical Research Acquisition Activity** · enrollment: 40 (estimated)

## Conditions studied

- Prostate Cancer

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01589939
- **Lead sponsor:** U.S. Army Medical Research Acquisition Activity
- **Sponsor class:** FED
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2009-03
- **Primary completion:** 2017-05
- **Final completion:** 2017-08
- **Target enrollment:** 40 (ESTIMATED)
- **Last updated:** 2016-05-17

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01589939

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01589939, "Reduced Planning Target Volume (PTV) Margins for the Treatment of Prostate Cancer Using the Calypso 4D Localization System". Retrieved via AI Analytics 2026-09-21 from https://api.ai-analytics.org/clinical/NCT01589939. Licensed CC0.

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