What happened
NHS Grampian used Annalise Enterprise CXR from May 2023 to April 2024 to flag chest X-rays at high risk of lung cancer for urgent review. It also added radiology reporting, a pathway coordinator and 20 protected CT slots a week. The Scottish Health Technologies Group (SHTG) of Healthcare Improvement Scotland evaluated the service and published its assessment in February 2025. It compared 68 patients who reached treatment with a 2019 baseline of 113 patients. Patients who needed a CT scan received a CT scan six days more quickly after their X-ray report, a statistically significant change. Time to treatment fell by seven days, and the share diagnosed with treatable cancers rose from 41% to 53%. Neither change was statistically significant. SHTG writes that changes made at the same time make it difficult to tell the effect of each one. NHS Grampian calibrated the software to its capacity, so it did not run at its maximum performance. In its resource impact analysis, SHTG found that the pathway cost £274,790 more than the traditional one.
Sources
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Assessment report, by authors with no tie to the system.
Scottish Health Technologies Group, Healthcare Improvement Scotland. Artificial intelligence-assisted clinician review of chest X-rays for suspected lung cancer. SHTG Assessment in response to an enquiry from the Accelerated National Innovation Adoption (ANIA) partnership, February 2025, pp. 3 and 18-20.
All patients who needed a CT scan (n=68) received a CT scan six days more quickly following a CXR report, which was statistically significant (95% confidence interval (CI) [3.647,7.369], p<0.001).
Details
AI system
- Workflow
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The software flagged chest X-rays at elevated risk of lung cancer for urgent reporting by radiologists. A coordinator arranged urgent CT scans for patients whom radiologists judged to be at high risk. NHS Grampian protected 20 CT slots a week for the urgent pathway.
Follow-up
- Conditions for replication
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The software's calibration matches the staff and CT capacity of the pathway. A clinician reviews every flagged X-ray before a CT scan is arranged.
Entry details
- Sector
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Healthcare (lung cancer diagnosis).
- Purpose
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Annalise.ai built Annalise Enterprise CXR to scan chest X-rays for 124 clinically relevant findings and flag high-risk images for clinical review.
Not yet checked: model, release, provider, role, configuration, inputs and outputs, autonomy, human oversight, AI contribution, beneficiaries, reach, distribution and access, duration, every measurement question, every money question, ownership and control, dependencies, cross-border connections, geopolitical implications, replication attempts, availability, institutional decision, grounds, action and result, success criterion, every evidence question, observed or intended, alternative assessments, related entries, other identifiers, category mappings.
Cite this record
Peter H. Vartanian. (2026). CT scans came six days sooner after Annalise Enterprise CXR arrived (AIBD-0887). Artificial Intelligence Benefits Database, edition of 31 October 2026. https://petervartanian.xyz/aibd/records/AIBD-0887.html (archived at https://doi.org/10.7910/DVN/AADSII, version 4.0)