Community Acquired Pneumonia (CAP)TIME-CAPNCT07870525
Chest Radiography Versus Ultra-Low-Dose Chest Computed Tomography in Adults in the Emergency Department
An observational study of Community Acquired Pneumonia (CAP), run by University of Southern Denmark at 1 site in Denmark.
Trial summary
Objective: To quantify and compare total staff person-time per imaging episode betweenconventional chest radiography (CXR) and ULDCT in adult emergency department patients in whom CAP is a differential diagnosis. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Community Acquired Pneumonia (CAP)
- What is being tested?
- ULDCT
- How many people
- 66 participants
- Where
- 1 siteDenmark
- Study dates
- 29 Jan 2025to Jun 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients from Emergency Department from Hospital Sonderjylland, Aabenraa, Denmark.
Who may be able to join
- Patients presenting to the emergency department during daytime weekday hours in whom CAP is a differential diagnosis, and who are able to undergo the assigned imaging examination.
Who cannot join
- Patients requiring immediate imaging for a critical condition (for example suspected pneumothorax).
- Bariatric patients exceeding the technical limits of the scanner
- Pregnancy
- Patients requiring additional imaging beyond the chest (for example abdominal CT)
- Severe dementia, or need for sedation to complete imaging
- Patients requiring mechanical ventilation.
- Patients requiring accompaniment by medical staff during transport
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Denmark1 site, 1 recruiting
- Recruiting
Hospital Sønderjylland
Aabenraa, 6200
Mariana B Cartuliares, +45 21659882, mbc@rsyd.dk
About this study
Official title: Human-Resource Utilisation of Conventional Chest Radiography Versus Ultra-Low-Dose Chest Computed Tomography for Suspected Community-Acquired Pneumonia in Adults in the Emergency Department
Objective: To quantify and compare total staff person-time per imaging episode betweenconventional chest radiography (CXR) and ULDCT in adult emergency department patients in whom CAP is a differential diagnosis.
Read the detailed description
Background: Community-acquired pneumonia (CAP) is a leading cause of acute hospital admission. Chest radiography, the standard first-line imaging test, has limited sensitivity, whereas ultra-low-dose CT (ULDCT) offers higher diagnostic accuracy at a comparable radiation dose. The staff person-time implications of substituting ULDCT for radiography in emergency department workflow are unknown.
Objective: To quantify and compare total staff person-time per imaging episode between conventional chest radiography (CXR) and ULDCT in adult emergency department patients in whom CAP is a differential diagnosis.
Methods: Single-centre, two-period observational time-and-motion study at the emergency department of Southern Jutland Hospital - Aabenraa. The CXR arm was collected from 2025 to June 2027; the ULDCT arm is collected from September 2026. The primary outcome is cumulative staff person-minutes per imaging episode, combining electronic radiology-system timestamps with stopwatch-measured in-room occupancy time. The primary analysis is a Mann-Whitney U test with a bootstrapped confidence interval for the difference in medians, supplemented by adjusted quantile regression.
- Conditions
- Community Acquired Pneumonia (CAP)
- Being tested
- ULDCT
- Keywords
- pneumonia, ultra-low-dose CT, ULDCT, Chest Xray, Emergency Department
- Medical subject headings
- Community-Acquired Pneumonia, Pneumonia, Emergencies
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ULDCTOther
Time used to complete the radiographic procedure
| Study group | Role | What they receive |
|---|---|---|
| X-Ray | Conventional chest radiography Receives: Other: ULDCT |
What is being measured
The primary outcome is the main question the study is designed to answer.
Cumulative staff person-minutes per imaging episode
Total human resource utilisation, defined as cumulative staff person-minutes per imaging episode, from the point staff fetch the patient for imaging to the point a final radiological report is available. The time contributed by every involved staff member is summed (multi-staff summation rule: two staff members working simultaneously for two minutes contribute four person-minutes). Contributing personnel categories: porters, radiographers, nurses, and radiologistsor reporting radiographers.
Measured: From admission to completon of imaging, up to 1 week.
Secondary outcomes (4)
Portering/transport time
From staff fetching the patient at the ward room to arrival at the imaging room measured in minutes
Measured: From admission to arrival at imaging, up to 24 hours.
in-room occupancy time
When the patient arrives at imaging until patient leaves imagining department
Measured: From arrival at imaging to discharge from imaging, up to 24 hours
image acquisition time
Time (minutes) taken to complete the imaging
Measured: From time imaging begins to time imagining ends, up to 60 minutes
reporting time
The time (minutes) taken according to the electronic registration system
Measured: From imaging completion to completion in electonic registration system, up to 60 minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Oct 2026
- Study start29 Jan 2025
- Primary completionJun 2027 (estimated)
- Study completionJun 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Community Acquired Pneumonia (CAP)Studies of the same condition, open and under way.
- More trials run by University of Southern DenmarkThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 66 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Southern Denmark
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07870525
- Sponsor's protocol ID
- SHS-ED-1-2026
- Acronym
- TIME-CAP
- Status last verified
- Aug 2026
- First submitted
- 31 Aug 2026
- Last updated
- 13 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Human-Resource Utilisation of Conventional Chest Radiography Versus Ultra-Low-Dose Chest Computed Tomography for Suspected Community-Acquired Pneumonia in Adults in the Emergency Department
- ClinicalTrials.gov ID
- NCT07870525
- Acronym / sponsor ID
- TIME-CAP / SHS-ED-1-2026
- Conditions
- Community Acquired Pneumonia (CAP)
- Keywords
- pneumonia, ultra-low-dose CT, ULDCT, Chest Xray, Emergency Department
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 66 participants (estimated)
- Lead sponsor
- University of Southern DenmarkUniversity, hospital or other
- Study start
- 29 Jan 2025 (actual)
- Primary completion
- Jun 2027 (estimated)
- Study completion
- Jun 2027 (estimated)
- First posted
- 13 Oct 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Objective: To quantify and compare total staff person-time per imaging episode betweenconventional chest radiography (CXR) and ULDCT in adult emergency department patients in whom CAP is a differential diagnosis.
Detailed description
Background: Community-acquired pneumonia (CAP) is a leading cause of acute hospital admission. Chest radiography, the standard first-line imaging test, has limited sensitivity, whereas ultra-low-dose CT (ULDCT) offers higher diagnostic accuracy at a comparable radiation dose. The staff person-time implications of substituting ULDCT for radiography in emergency department workflow are unknown.
Objective: To quantify and compare total staff person-time per imaging episode between conventional chest radiography (CXR) and ULDCT in adult emergency department patients in whom CAP is a differential diagnosis.
Methods: Single-centre, two-period observational time-and-motion study at the emergency department of Southern Jutland Hospital - Aabenraa. The CXR arm was collected from 2025 to June 2027; the ULDCT arm is collected from September 2026. The primary outcome is cumulative staff person-minutes per imaging episode, combining electronic radiology-system timestamps with stopwatch-measured in-room occupancy time. The primary analysis is a Mann-Whitney U test with a bootstrapped confidence interval for the difference in medians, supplemented by adjusted quantile regression.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| X-Ray | – | Other: ULDCTConventional chest radiography |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients from Emergency Department from Hospital Sonderjylland, Aabenraa, Denmark.
Key inclusion criteria (1 listed)
- Patients presenting to the emergency department during daytime weekday hours in whom CAP is a differential diagnosis, and who are able to undergo the assigned imaging examination.
Key exclusion criteria (7 listed)
- Patients requiring immediate imaging for a critical condition (for example suspected pneumothorax).
- Bariatric patients exceeding the technical limits of the scanner
- Pregnancy
- Patients requiring additional imaging beyond the chest (for example abdominal CT)
- Severe dementia, or need for sedation to complete imaging
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ULDCTTime used to complete the radiographic procedure | Other | X-Ray |
Primary outcome
Cumulative staff person-minutes per imaging episode
Time frame: From admission to completon of imaging, up to 1 week.
Total human resource utilisation, defined as cumulative staff person-minutes per imaging episode, from the point staff fetch the patient for imaging to the point a final radiological report is available. The time contributed by every involved staff member is summed (multi-staff summation rule: two staff members working simultaneously for two minutes contribute four person-minutes). Contributing personnel categories: porters, radiographers, nurses, and radiologistsor reporting radiographers.
4 secondary outcomes
Portering/transport time
Time frame: From admission to arrival at imaging, up to 24 hours.
in-room occupancy time
Time frame: From arrival at imaging to discharge from imaging, up to 24 hours
image acquisition time
Time frame: From time imaging begins to time imagining ends, up to 60 minutes
reporting time
Time frame: From imaging completion to completion in electonic registration system, up to 60 minutes
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Oct 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Community Acquired Pneumonia (CAP), run by University of Southern Denmark at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 13 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Cumulative staff person-minutes per imaging episode (time frame: From admission to completon of imaging, up to 1 week.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Oct 2026.