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Study of Low Dose CT in Sarcoma Patients

This study has been completed.
Information provided by:
University Health Network, Toronto Identifier:
First received: September 12, 2005
Last updated: April 20, 2007
Last verified: April 2007

The primary outcome of this study is the detection of lung metastases comparing Low dose CT (LDCT) and Minimum dose CT (MnDCT) with CXR.


  1. LDCT and MnDCT have similar sensitivity for the detection of lung nodules (metastases).
  2. MnDCT of the thorax detects a larger number of nodules (metastases) than CXR.

Condition Intervention Phase
Soft Tissue Sarcoma Procedure: low dose CT Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Surveillance Low Dose Computed Tomography of the Thorax in Patients With High Grade Extremity Soft Tissue Sarcoma

Resource links provided by NLM:

Further study details as provided by University Health Network, Toronto:

Primary Outcome Measures:
  • Detection of metastases

Estimated Enrollment: 70
Study Start Date: August 2003
Estimated Study Completion Date: January 2006
Detailed Description:
A 3-year prospective phase II non-randomized study commenced May 2003 enrolling 60 high-risk patients with Intermediate and High Grade STS. Each patient is kept under radiological surveillance for 3 years unless lung metastases are detected. Conventional thoracic imaging for staging and surveillance of STS patients is shown in Figure 1. In the trial, LDCT and MnDCT are added to each imaging visit (Figure 1). A 2-view CXR (CR) is performed (Direct View, Kodak, Rochester) followed by thoracic CT scans performed on a Siemens 16 row MDCT (Sensation 16, Siemens, Erlangen), CT acquisition; 120kVp, 5/2.5/2.5mm. Images are reconstructed with high and low spatial frequency filters and soft copy viewing is performed on a standalone PACS workstation using standard mediastinal (w 350, l 40) and lung (w 1500, l -600) settings. Examinations are performed with varying mAs; SDCT 120 mAs, LDCT 40 mAs and MnDCT 20 mAs. The examinations are evaluated, blinded to the results of the alternative and previous studies, for the presence of nodules (defined as a non-calcified focal opacity ≥3 mm < 3 cm). Surveillance imaging is commenced 3 months post surgery.

Ages Eligible for Study:   16 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • High Grade Soft tissue sarcoma

Exclusion Criteria:

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00188422

Canada, Ontario
Mount Sinai Hospital
Toronto, Ontario, Canada
Sponsors and Collaborators
University Health Network, Toronto
Principal Investigator: Narinder Paul, FCPC C University Health Network, Toronto
  More Information Identifier: NCT00188422     History of Changes
Other Study ID Numbers: 03-0468-CE
Study First Received: September 12, 2005
Last Updated: April 20, 2007

Additional relevant MeSH terms:
Neoplasms, Connective and Soft Tissue
Neoplasms by Histologic Type
Neoplasms processed this record on September 21, 2017