NCT02454738

Ultralow Dose Computed Tomography in High-risk Drug-resistant Tuberculosis Contacts

Ultralow Dose Computed Tomography in Close Contacts at High Risk for Developing Multidrug- or Extensively Drug-resistant Tuberculosis: A Pilot Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 6 (actual)
• Sponsor: Seoul National University Hospital · Academic / Other
• Sex: All
• Age: 21 Years – 80 Years
• Healthy volunteers: Accepted

Summary

To evaluate CT abnormalities in the lung parenchyma in close contacts at high risk for developing multidrug- or extensively drug-resistant Tb by using a follow-up ultralow dose CT scan.

Detailed description

Multidrug- or extensively resistant tuberculosis tuberculosis is a major public health threat worldwide and the global burden of drug-resistant tuberculosis is increasing. Drug-resistant tuberculosis is associated with long period and high costs for treatment, high rates of default, treatment failure and death. Drug-resistant tuberculosis should be diagnosed rapidly so as to reduce potential transmission. In the United States, at least one-fifths cases of multidrug-resistant tuberculosis can be linked to transmission. Close contacts to drug-resistant tuberculosis are at high risk for being transmitted and developing drug-resistant tuberculosis. There are two options suggested for close contacts to drug-resistant tuberculosis: preventive therapy and close observation. But both strategies are lack of sufficient evidence. Ultralow chest CT scan may be an alternative for early identification and risk stratification of developing active tuberculosis in close contacts to drug-resistant tuberculosis with minimal radiation exposure similar to that of chest x-ray.

Conditions

• Latent Tuberculosis

Interventions

Type	Name	Description
RADIATION	Ultralow dose chest CT scan	Ultralow-dose chest CT scan is performed using a 64-row multidetector CT system (Discovery CT750HD; GE Healthcare, Waukesha, WI) with 1.25-mm-thick axial slices at less than 1 mSv (volume computed tomography dose index: 0.39 milligray).

Timeline

• Start date: 2015-06-01
• Primary completion: 2016-06-01
• Completion: 2016-06-01
• First posted: 2015-05-27
• Last updated: 2016-06-07

Locations

1 site across 1 country: South Korea