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Positron Emission Tomography (PET)/Computed Tomography (CT) and Roentgen in Lung Cancer: Evaluation of Patients in General Practice (PROLOG)

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified February 2009 by Odense University Hospital.
Recruitment status was:  Recruiting
Information provided by:
Odense University Hospital Identifier:
First received: May 6, 2008
Last updated: February 18, 2009
Last verified: February 2009

The prognosis of lung cancer depends much on the stage of the disease at the time of diagnosis. Only 16 % of lung cancer can be offered curative intended surgery. Chest x-ray is the gate-keeper in lung cancer diagnosis, but it has a miss rate of 20-60 %. A false negative chest x-ray often causes prolonged delay in diagnosis - often months.

Recently a "48 hour diagnosis guaranty" has been implemented, which helps accelerate the system delay (delay from referral to diagnosis). But chest x-ray is still the gate-keeper; if the chest x-ray is negative further examination ceases.

PET/CT has a higher sensitivity (96 %), than chest x-ray. In the latter years only little improvement in the survival rate of lung cancer has been made. Screening studies is currently been performed, but it's time for innovative thinking. PET/CT has established its place in the staging of lung cancer. But studies like this may help to place PET/CT in the chain of examination making it more cost-beneficial.

The overall aim of this study is to improve patient course with earlier diagnosis of lung cancer.

Condition Intervention Phase
Lung Cancer Radiation: PET/CT (low-dose) Phase 4

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Diagnostic
Official Title: PET/CT and Roentgen in Lung Cancer. Evaluation of Patients in General Practice

Resource links provided by NLM:

Further study details as provided by Odense University Hospital:

Primary Outcome Measures:
  • Sensitivity and specificity of chest x-ray and PET/CT in Lung Cancer [ Time Frame: min. two years of follow up ]

Secondary Outcome Measures:
  • Positive/negative predictive values of chest x-ray and PET/CT Operability - surrogate for survival Numbers of false positive PET/CT Numbers of false negative PET/CT Numbers of invasive procedures Cost-effectiveness [ Time Frame: min. two years of follow-up ]

Estimated Enrollment: 1700
Study Start Date: May 2008
Estimated Study Completion Date: June 2012
Estimated Primary Completion Date: June 2010 (Final data collection date for primary outcome measure)
Intervention Details:
    Radiation: PET/CT (low-dose)
    400 mBq 18F-flour-deoxyglucose given iv. 60 min. before PET/CT-scan
    Other Name: FDG
  Show Detailed Description


Ages Eligible for Study:   60 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Pt. referred from general practice to a chest x-ray
  • age 60-80 years
  • current or former smoker

Exclusion Criteria:

  • previously diagnosed with lung cancer
  • contraindications to PET/CT
  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: NCT00675168

Contact: Mie Jung Nielsen, MD 0045-6541-2981
Contact: Poul Flemming Højlund Carlsen, MD, Professor, DMSc 0045-6541-2981

Department of Nuclear Medicine Not yet recruiting
Odense, Funen, Denmark, 5000
Contact: Poul Flemming Højlund Carlsen, MD, Professor, DMSc    45-6541-2981      
Contact: Allan Johansen, MD, Head of Department    45-6541-2981      
Principal Investigator: Mie Jung Nielsen, MD         
Odense, Fünen, Denmark
Contact: Nielsen   
Odense, Fünen, Denmark
Contact: Nielsen, MD   
Sponsors and Collaborators
Odense University Hospital
  More Information

Responsible Party: Mie Jung Nielsen, MD, Odense University Hospital, Department of Nuclear Medicine Identifier: NCT00675168     History of Changes
Other Study ID Numbers: PROLOG
Study First Received: May 6, 2008
Last Updated: February 18, 2009

Keywords provided by Odense University Hospital:
Lung Cancer

Additional relevant MeSH terms:
Lung Neoplasms
Respiratory Tract Neoplasms
Thoracic Neoplasms
Neoplasms by Site
Lung Diseases
Respiratory Tract Diseases processed this record on September 21, 2017