Advanced CT examination of collapsed lungs: looking for the leak point

Radiological ASsessment of Pneumothorax (RASP)

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN21828354

Enrollment

Registered

2024-12-30

Start date

2024-11-30

Completion date

Unknown

Last updated

2025-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pneumothorax Respiratory

Interventions

A multi-phase 320-MDCT scan will be requested and performed at the earliest convenience. Whilst the participant is on the CT trolley, digital assessment of the air leak and an ultra-low dose helical w

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Spontaneous, traumatic or iatrogenic pneumothorax 2. Chest drain in situ for management of pneumothorax 3. Detectable ongoing air leak

Exclusion criteria

Exclusion criteria: 1. Unable to lie flat 2. Unable to tolerate clamped ICD 3. Aged less than 50 years of age 4. Pregnant or breastfeeding patient 5. Inability to consent or comply with trial requirements.

Design outcomes

Primary

Measure	Time frame
Rate of identification of visceral air leak on 320-MDCT by radiologist	—

Secondary

Measure	Time frame
1. The proportion of participants in whom a visceral air leak is identified on 320-MDCT with the drain clamped, unclamped and on suction 2. Measurement of digital air leak on a Thopaz device with the drain unclamped and on suction	—

Countries

England, United Kingdom

Contacts

Public ContactJenny Symonds

Jenny.Symonds@nbt.nhs.uk-

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026