ClinicalTrials.gg
RecruitingNCT07681245Updated Oct 26, 2026

Label-free Femtosecond Laser Imaging Combined With the Fast Lung Artificial Intelligence Model for Rapid Intraoperative Diagnosis of Lung Surgical Specimens: A Multicentre, Prospective, Parallel-workflow, Non-inferiority Study.

An observational study in Lung Cancer, sponsored by Shanghai Chest Hospital. Recruiting at 5 sites in China. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2026-10-26.

Sponsored by Shanghai Chest Hospital · Observational

From the registry’s dates

  • Started Jul 2026; still recruiting 4 months later.
Updated Oct 26, 2026Site recruiting status changedGo to Updates ↓
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
294
Ages
18 Years to 90 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 46 studies in Lung Neoplasms by Shanghai Chest Hospital — 24 open to participants now, 24 under way, none of them phase 3. Lung Neoplasms · Shanghai Chest Hospital.

Started
2026
with 5 others
Observational
9 of 46
7 open now
Primary completion
2026-10
later than 11 of 23 live
Registered
43rd of 46
by date

Among the 46 studies in Lung Neoplasms by Shanghai Chest Hospital, this one is one of 6 that started in 2026, is one of 9 observational ones, reaches primary completion later than 11 of the 23 other live ones, and was the 43rd registered.

Lung Neoplasms

5,422 studies on the registry are indexed under Lung Neoplasms; 1,346 are open to participants now.

Browse Lung Neoplasms studies →

Open to participants now

24 of the 46 studies in Lung Neoplasms by Shanghai Chest Hospital are open now, in 1 country. Recruiting first, the newest first:

18 more — sign in →

By country, each count listing its studies:

All 24 open studies →

Where they have run

Who these studies take

Of the 996 Lung Neoplasms studies recruiting now, 683 (69%) set no upper age limit and 142 (14%) stop at 75 or younger; 45 take children under 18; 142 take healthy volunteers.

This study: 18 Years to 90 Years · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

Was this useful?
Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 46 studies in Lung Neoplasms by Shanghai Chest Hospital, or all of them as a file.
02

Study summary

This study aims to evaluate whether femtosecond laser imaging combined with FastLung AI model can provide intraoperative diagnostic performance that is non-inferior to standard frozen section diagnosis for pulmonary nodules or suspected pulmonary tumor lesions. Patients scheduled for lung surgery and requiring intraoperative pathological assessment will be prospectively enrolled. After tumor excision, the fresh tumor specimen will be bisected through the central plane. One half will be used for standard frozen section diagnosis, and the mirrored counterpart will be used for femtosecond laser imaging. Both diagnostic results will be compared with the final paraffin-embedded pathological diagnosis as the reference standard. The results of femtosecond laser imaging will not guide intraoperative clinical decision-making.

Read the detailed description

This is a prospective, multicenter, paired diagnostic accuracy study designed to evaluate the non-inferiority of femtosecond laser imaging compared with standard frozen section diagnosis for intraoperative assessment of pulmonary nodules or suspected pulmonary tumor lesions.

Eligible patients with pulmonary nodules, pulmonary space-occupying lesions, or suspected pulmonary tumor lesions who are scheduled to undergo surgical resection and require intraoperative pathological assessment will be prospectively enrolled from participating centers. After surgical excision of the tumor specimen, the fresh specimen will be bisected through the central plane. One half of the specimen will be submitted for routine frozen section diagnosis, while the mirrored counterpart will be used for femtosecond laser imaging. This paired design is intended to allow spatially corresponding comparison between the two diagnostic methods while preserving routine clinical workflow.

Frozen section diagnosis will be performed according to standard intraoperative pathological procedures and will continue to guide intraoperative clinical decision-making. Femtosecond laser imaging will be performed on fresh tissue specimens for research purposes. The imaging results will be recorded for diagnostic performance evaluation but will not be used to guide intraoperative surgical decisions.

The diagnostic results of femtosecond laser imaging and frozen section diagnosis will both be compared with the final paraffin-embedded pathological diagnosis, which will serve as the reference standard. The primary objective is to determine whether the diagnostic accuracy of femtosecond laser imaging is non-inferior to that of frozen section diagnosis. Secondary objectives may include comparisons of sensitivity, specificity, positive predictive value, negative predictive value, diagnostic concordance, and intraoperative assessment time between the two methods.

03

Conditions studied

  • Lung Cancer

Browse trials for

Keywords

  • lung cancer
  • artificial intelligence
  • Intraoperative diagnosis
04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The study population will consist of patients with pulmonary nodules, pulmonary space-occupying lesions, or suspected pulmonary tumor lesions who are scheduled to undergo surgical resection at participating centers. Eligible patients will require intraoperative pathological assessment, and fresh lung tissue specimens must be available for both femtosecond laser imaging and standard frozen section diagnosis. All participants will be prospectively enrolled according to the predefined inclusion and exclusion criteria, and the diagnostic results will be compared with the final paraffin-embedded pathological diagnosis as the reference standard.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Preoperative imaging suggests a pulmonary nodule, pulmonary space-occupying lesion, or suspected pulmonary tumor lesion.
  2. The participant is scheduled to undergo pulmonary wedge resection, segmentectomy, lobectomy, or other pulmonary surgery.
  3. Fresh lung tissue specimens can be obtained intraoperatively for femtosecond laser imaging.
  4. Intraoperative frozen section diagnosis is planned to assess the nature of the tumor lesion.
  5. Corresponding postoperative paraffin-embedded pathological diagnosis can be obtained.
  6. The participant or the participant's legally authorized representative has signed the written form.
  7. Patients had not received any antitumor treatment prior to enrollment or specimen collection, including chemotherapy, radiotherapy, targeted therapy, immunotherapy, or other systemic anticancer treatments.

Exclusion criteria

Exclusion Criteria:

  1. The intraoperative specimen is insufficient and cannot simultaneously meet the requirements for routine clinical pathological diagnosis and research-related testing.
  2. The specimen shows severe carbonization, necrosis, compression, contamination, or improper preservation, and the investigator determines that effective imaging cannot be completed.
  3. The femtosecond laser imaging specimen cannot be matched with the corresponding lesion assessed by final paraffin pathology.
  4. Final paraffin-embedded pathological diagnosis cannot be obtained.
  5. The participant withdraws .
  6. Other conditions that, in the opinion of the investigator, make the participant unsuitable for this study.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
294 participants (estimated)
Target follow-up
30 Days
Patient registry
Yes

Groups and cohorts

  • Patients undergoing intraoperative pulmonary nodule diagnosis

    Patients with pulmonary nodules who are scheduled for surgical resection and require intraoperative pathological assessment. All participants will undergo femtosecond laser imaging and standard frozen section diagnosis in parallel, and both results will be compared with final paraffin pathology as the reference standard.

    Diagnostic Test: Femtosecond Laser Imaging · Diagnostic Test: Frozen Section Diagnosis

Interventions

  • Diagnostic testFemtosecond Laser Imaging

    Fresh surgical specimens will be examined intraoperatively using femtosecond laser imaging. The imaging results will be recorded for diagnostic performance evaluation and compared with final paraffin pathology. The results will not guide intraoperative clinical decision-making.

  • Diagnostic testFrozen Section Diagnosis

    Fresh tumor specimens will be evaluated intraoperatively by standard frozen section pathology. After the tumor is bisected through the central plane, one half of the specimen will be submitted for frozen section diagnosis, while the mirrored counterpart will be used for femtosecond laser imaging. Frozen section diagnosis will be used for routine intraoperative clinical decision-making and will also be compared with final paraffin pathology.

06

What researchers measure

Primary outcomes

  1. Non-inferiority performance threshold

    To determine whether FLI combined with Fast Lung achieves the prespecified non-inferiority performance threshold for benign-malignant diagnosis of the patient-level primary target lesion, using final FFPE histopathology as the reference standard.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

Secondary outcomes

  1. Workflow turnaround time

    To compare workflow turnaround time for FLI + Fast Lung and routine frozen-section pathology.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  2. Accuracy for invasive versus non-invasive/minimally invasive adenocarcinoma-spectrum lesions.

    To evaluate the accuracy of Fast Lung for invasive versus non-invasive/minimally invasive adenocarcinoma-spectrum lesions.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  3. Sensitivity

    To estimate the sensitivity of Fast Lung for malignant lesions using FFPE histopathology as the reference standard.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  4. Specificity

    To estimate the specificity of Fast Lung for benign lesions using FFPE histopathology as the reference standard.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

Other outcomes

  1. Diagnostic accuracy (ROC-AUC)

    The area under the receiver operating characteristic curve (ROC-AUC) will be used to assess the overall diagnostic accuracy of FLI-FastLung model in etermination of the benign or malignant of surgical specimens compared with final paraffin pathology as the reference standard.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  2. Performance of histological subtype diagnostic

    The performance of the FLI-FastLung model in distinguishing LUAD from LUSC will be evaluated using final paraffin pathology as the reference standard. Diagnostic performance will be quantified by area under the ROC curve (ROC-AUC), overall accuracy, sensitivity, and specificity.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  3. Performance in biopsy or small-tissue specimens

    The performance of the FLI-FastLung model in biopsy or small tissue specimens will be assessed using final paraffin pathology as the reference standard. Diagnostic performance will be quantified by area under the ROC curve (ROC-AUC), overall accuracy, sensitivity, and specificity.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  4. Diagnostic Failure Rate

    Diagnostic failure rate refers to the proportion of cases in which the FLI-FastLung system is unable to generate a valid histological classification result. A diagnostic failure is defined as the absence of a final output due to inadequate image quality, insufficient tissue input, or system processing failure.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  5. False Positive Rate

    False positive rate will be calculated as the proportion of cases incorrectly classified as positive by the FLI-FastLung model when compared with final paraffin pathology as the reference standard. The result will be derived from a confusion matrix and expressed as a percentage (%).

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  6. False Negative Rate

    False negative rate will be calculated as the proportion of cases incorrectly classified as negative by the FLI-FastLung model when compared with final paraffin pathology as the reference standard. The result will be derived from a confusion matrix and expressed as a percentage (%).

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

  7. Heatmap-pathology concordance

    Concordance between FastLung-generated heatmaps and corresponding pathological tumor regions will be evaluated using spatial overlap metrics. The primary measurement will be the Dice similarity coefficient (DSC) between model-generated heatmap regions and manually annotated pathological tumor areas. Results will be expressed as a continuous score ranging from 0 to 1.

    Time frame: From intraoperative diagnosis to final paraffin pathology confirmation, up to 30 days after surgery.

07

Study locations

4 of 5 sites recruiting
08

References and documents

Publications

  • Xu X, Chung JH, Jheon S, Sung SW, Lee CT, Lee JH, Choe G. The accuracy of frozen section diagnosis of pulmonary nodules: evaluation of inflation method during intraoperative pathology consultation with cryosection. J Thorac Oncol. 2010 Jan;5(1):39-44. doi: 10.1097/JTO.0b013e3181c09f9c. PubMed 19934776 ↗
  • Hollon TC, Pandian B, Adapa AR, Urias E, Save AV, Khalsa SSS, Eichberg DG, D'Amico RS, Farooq ZU, Lewis S, Petridis PD, Marie T, Shah AH, Garton HJL, Maher CO, Heth JA, McKean EL, Sullivan SE, Hervey-Jumper SL, Patil PG, Thompson BG, Sagher O, McKhann GM 2nd, Komotar RJ, Ivan ME, Snuderl M, Otten ML, Johnson TD, Sisti MB, Bruce JN, Muraszko KM, Trautman J, Freudiger CW, Canoll P, Lee H, Camelo-Piragua S, Orringer DA. Near real-time intraoperative brain tumor diagnosis using stimulated Raman histology and deep neural networks. Nat Med. 2020 Jan;26(1):52-58. doi: 10.1038/s41591-019-0715-9. Epub 2020 Jan 6. PubMed 31907460 ↗
  • Lan C, Peng Y, Bai M, Zuo H, Li Y, Wu H, Zhang T, Zhu X, He J, Guo D, Chen X, Zhao H, Gao H. Fast multimodal imaging combined with machine learning identifying taurine as a potential marker for breast cancer margin assessment. NPJ Digit Med. 2025 Dec 17;9(1):32. doi: 10.1038/s41746-025-02202-z. PubMed 41402452 ↗

Individual participant data

Plan to share: No — Individual participant data will not be publicly shared due to patient privacy considerations and institutional data-sharing restrictions. De-identified aggregate results may be made available in publications or upon reasonable request, in accordance with applicable regulations and institutional policies.

09

Timeline

3 registry updates since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2026 (actual). Primary completion is estimated for Oct 2026, 3 months after the start.

Of 591 non-industry observational studies under Lung Neoplasms, half reached primary completion within 65 months of starting (the median), counting those still running; a quarter within 25 and three quarters within 162. This study's planned 3 months is below that.

Counting every sponsor, half of 681 studies reached it within 57 months; a quarter within 25 and three quarters within 135.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 22, 2026
First posted
Jul 2, 2026
StartActual
Jul 3, 2026
Primary completionEst.
Oct 30, 2026
CompletionEst.
Nov 30, 2026
Last update
Oct 26, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Sites
3 sites changed recruiting status (3 now recruiting)
Show 3 sites
  • Huadong Hospital · Shanghai, ChinaNot yet recruiting→Recruiting
  • Tongji Hospital · Shanghai, ChinaNot yet recruiting→Recruiting
  • Tongren Hospital · Shanghai, ChinaNot yet recruiting→Recruiting
across 3 updates, Oct 9, 2026 – Oct 26, 2026
Show all 3 updates
  1. Oct 26, 2026
    Tongren Hospital is now Recruiting
  2. Oct 23, 2026
    Tongji Hospital is now Recruiting
  3. Oct 9, 2026
    Huadong Hospital is now Recruiting
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07681245
Collaborators
Femtosecond Applications and Research (Guangzhou)
Responsible party
Xinghua Cheng (Professor of Medicine, Shanghai Chest Hospital) — Principal investigator
First posted
Jul 2, 2026
Start date
Jul 3, 2026
Primary completion
Oct 30, 2026 (estimated)
Completion
Nov 30, 2026 (estimated)
Last update
Oct 26, 2026

Study contacts

Xinghua Cheng, Dr. PhD.
Contact
xinhuacheng@sjtu.edu.cn
17701681215

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion