Peer Review History
| Original SubmissionJanuary 15, 2025 |
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Dear Dr. Song, Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process. Please submit your revised manuscript by May 01 2025 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org . When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ and select the 'Submissions Needing Revision' folder to locate your manuscript file.
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Please see http://www.bmj.com/content/340/bmj.c181.long for guidelines on how to de-identify and prepare clinical data for publication. For a list of recommended repositories, please see https://journals.plos.org/plosone/s/recommended-repositories. You also have the option of uploading the data as Supporting Information files, but we would recommend depositing data directly to a data repository if possible.-->--> -->-->Please update your Data Availability statement in the submission form accordingly.-->?> [Note: HTML markup is below. Please do not edit.] Reviewers' comments: Reviewer's Responses to Questions Comments to the Author 1. Is the manuscript technically sound, and do the data support the conclusions? Reviewer #1: Partly Reviewer #2: Partly Reviewer #3: Yes ********** 2. Has the statistical analysis been performed appropriately and rigorously? -->?> Reviewer #1: Yes Reviewer #2: Yes Reviewer #3: N/A ********** 3. Have the authors made all data underlying the findings in their manuscript fully available??> The PLOS Data policy Reviewer #1: Yes Reviewer #2: No Reviewer #3: Yes ********** 4. Is the manuscript presented in an intelligible fashion and written in standard English??> Reviewer #1: Yes Reviewer #2: Yes Reviewer #3: No ********** Reviewer #1: I have several points for this paper to be finalized. Abstract 1. The purpose of this study in abstract is written twice. M&M 2. Study subjects and data collection - all reviewed patient's information should be presented in this section (gender, age, BMI) 3. training, validation and test set number is described in very confused way. In total, manual segmentation for 69 patients (138 image sets) were done? 4. The term "ground truth and manual mapping" is used in confusion way. For train as well as test sets, ground truth is just ground truth. Also, the term mapping cannot be used as the replacement of segmentation. 5. The manual segmentation method should be described with more detail. Did clinician draw boundary of the vessel to determine ROI? Or identified center and used seed grown method? This is also related to the clinical evaluation. 6. In clinical evaluation, the difference between the center of ROI was obtained? If it is so, the determining method of the center of ROI should be stated. It is not clearly written. 7. It is difficult to understand how the method implemented in the clinical evaluation can be considered a clinical evaluation. It would be better to refer to the previous literature further. This evaluation method dose not fully understand as the way that clinician used in actual clinical conditon. Result Overall result is very confusing because it shows too much information. Some are not related to the study purpose and some are not necessary to support study hypothesis. 8. Subject distribution - I would suggest to present a table for patient's general information. Also, is it necessary to to describe the type of perforator according to sex? 9. There must be explanation for the difference between the right and left side. 10. Some results are not suitable for the study purpose, for example figure 2. This study is not for showing distribution of vessel position. Discussion 11. the first paragraph should be in introduction section. 12. The third paragraph is not very important according to the study purpose, except the last sentence. Although, the last sentence seems broken and don't understand. (This study's most challenging detections involved perforators traveling through muscles before reaching subcutaneous layers.) 13.In 4th paragraph, "the progression course of the artery could be confirmed more clearly in younger women with sufficient subcutaneous tissue thickness in.." -> This part was not stated either in method nor result. It cannot be discussed as the readers do not have any idea about it. 14.In 4th paragraph, "On the other hand, there was no statistical difference in accuracy depending on the type..." This part needs to be discussed about. 15. 5th paragraph can be removed or reduced. 16. 7th paraphragh, "The main trunk starting from the femoral artery near the hip joint had a large diameter...." I cannot find any description about this information, it suddenly appeared in disscusion only. I would suggest to present result of DSC, JSC if there is significancy according to the superior1/3, middle1/3, inferior1/3 part. If it is presented, the above sentence can be supported. 17. 8th paragraph is not very related to the study purpose or result? 18. 9th paraphraph is the repeatition of the previous paragraphs, needs to be revised. 19. 10th paragraph, "First, the n value to proceed": "n value" -> sample size Reviewer #2: Authors of this study propose an innovative methodological solution to facilitate the identification of the vessels of the ALT pedicle. The study focuses on analysis and modeling, by a neural network of the path, of the perforating artery, and its comparison with manual modeling by an experimented operator. The objective of the study seems to be the feasibility of modeling the path of pedicle by AI software. The comparison with manual modeling serves as extrinsic validation. The primary endpoint is the accuracy of the location of the perforator on imaging. The means of evaluation is the comparison of projection concordance tests on imaging. The secondary endpoints seem to be the influence of gender, side, BMI and muscular or septal location of the perforators. The study has a small number of patients: 56 patients for machine learning (plus 11 excluded), 13 patients for the control after learning. Both legs were analyzed for each patient. The software performed the detection on the 2D scanner, then reconstructed in 3D the path of the vessel, and the projection of the perforator to the skin. Changes in size, contrast, and angulation of the images were applied randomly to eliminate algorithmic bias. Concordance tests for the detection of the perforator on the slices were performed. The results found a statistically significant projection concordance for the left side, not significant for the right side. The discussion clarifies some aspects and puts this study into perspective with the existing literature. In addition, they take into consideration the limitations of this study, particularly in terms of patient numbers. This paper is interesting, providing a relevant solution to simplify the identification of perforators, however, it seems to me that the work is not entirely complete. The objective of the study seems a little imprecise. Is the objective to demonstrate the feasibility of automatic segmentation, or to show that automatic segmentation performs as well as manual segmentation? The primary judgment criterion could be specified: is it a comparison on 2D slices or on 3D reconstructions? It seems relevant to me to formalize the expression of the secondary judgment criteria, these do not seem to be perfectly defined in the article. The comparison of projection concordance tests seems to be adapted to the demonstration of the objective of the study and perfectly conducted. The statistical tests seem relevant to me. In the results and the discussion, I did not understand whether the computer analysis allowed to detect the septal or muscular path of the perforators, or whether the margin of error did not allow to conclude. The conclusion of the study could be specified. We can conclude that automatic segmentation is possible, but, within the limits of this experimental procedure, seems to still lack a little precision. Reviewer #3: This study addresses the challenge of identifying perforators in the anterolateral thigh (ALT) flap for maxillofacial reconstruction by developing an automatic segmentation system, directly serving clinical practice and aligning with the practical needs of plastic surgery. Additionally, it pioneers the application of deep learning in the automatic segmentation of ALT flap perforators, filling a gap in this field and demonstrating significant innovation. However, some issues may need to be addressed. 1. The small sample size could limit the generalizability of the model, especially in clinical settings where diverse anatomical variations exist. Although the authors use manual mapping as the ground truth for training the model, relying on a single researcher for this step introduces a potential source of bias. 2. The reported distance differences between manual and automatic detection of perforators (e.g., 38.28 ± 15.52 mm on the left side) suggest some degree of inaccuracy. This could potentially be problematic for clinical applications where precise identification of perforators is crucial for successful surgical planning. 3. The references are outdated and may not reflect the latest advancements in imaging technologies and the application of deep learning in medical practices. ********** what does this mean? ). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy Reviewer #1: No Reviewer #2: Yes: Franck Delanoë Reviewer #3: No ********** [NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". If this link does not appear, there are no attachment files.] While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/ . PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org . Please note that Supporting Information files do not need this step. |
| Revision 1 |
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Dear Dr. Song, Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process. Please submit your revised manuscript by Nov 27 2025 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org . When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ and select the 'Submissions Needing Revision' folder to locate your manuscript file.
If you would like to make changes to your financial disclosure, please include your updated statement in your cover letter. Guidelines for resubmitting your figure files are available below the reviewer comments at the end of this letter. If applicable, we recommend that you deposit your laboratory protocols in protocols.io to enhance the reproducibility of your results. Protocols.io assigns your protocol its own identifier (DOI) so that it can be cited independently in the future. For instructions see: https://journals.plos.org/plosone/s/submission-guidelines#loc-laboratory-protocols . Additionally, PLOS ONE offers an option for publishing peer-reviewed Lab Protocol articles, which describe protocols hosted on protocols.io. Read more information on sharing protocols at https://plos.org/protocols?utm_medium=editorial-email&utm_source=authorletters&utm_campaign=protocols . We look forward to receiving your revised manuscript. Kind regards, John Minh Le, MD, DDS Academic Editor PLOS ONE Journal Requirements: If the reviewer comments include a recommendation to cite specific previously published works, please review and evaluate these publications to determine whether they are relevant and should be cited. There is no requirement to cite these works unless the editor has indicated otherwise. [Note: HTML markup is below. Please do not edit.] Reviewers' comments: Reviewer's Responses to Questions Comments to the Author Reviewer #2: All comments have been addressed Reviewer #3: All comments have been addressed Reviewer #4: (No Response) ********** 2. Is the manuscript technically sound, and do the data support the conclusions??> Reviewer #2: Yes Reviewer #3: Yes Reviewer #4: Yes ********** 3. Has the statistical analysis been performed appropriately and rigorously? -->?> Reviewer #2: Yes Reviewer #3: Yes Reviewer #4: Yes ********** 4. Have the authors made all data underlying the findings in their manuscript fully available??> The PLOS Data policy Reviewer #2: Yes Reviewer #3: Yes Reviewer #4: No ********** 5. Is the manuscript presented in an intelligible fashion and written in standard English??> Reviewer #2: Yes Reviewer #3: Yes Reviewer #4: Yes ********** Reviewer #2: Thank you for the corrections you have made; they make your manuscript much more relevant. In essence, it does indeed seem necessary to increase the number of subjects in the machine learning process to improve accuracy. The margin of error is a little too large for clinical application, and the lack of differentiation between the septal and muscular pathways is regrettable. As a supplementary conclusion to this work, it could be suggested that this methodology may be applied to other perforator flaps. Thank you for this work. Reviewer #3: This is an excellent research. The author's response cleared up my doubts. I have no further comments! Reviewer #4: This manuscript presents a deep learning–based approach for automatic segmentation of anterolateral thigh (ALT) flap perforators on computed tomography angiography (CTA). The clinical relevance is clear: accurate perforator identification is critical for flap harvest in maxillofacial reconstruction, yet manual mapping is time-consuming and variable. The novelty lies in applying convolutional neural networks (CNNs) to this niche domain, using a cascaded 2D/3D segmentation strategy. Overall, the study is innovative, clinically relevant, and well-structured. However, several methodological and interpretive aspects merit clarification and strengthening. My major Concerns are 1. Dataset size and annotation bias The study uses 80 patients, which is relatively modest for training and validating deep learning models, especially given the high variability of ALT perforators. Furthermore, all ground truth annotations were produced by a single researcher, which introduces potential systematic bias. Multi-annotator validation or inter-rater agreement data would strengthen the credibility of the reference standard. 2. Evaluation metrics and clinical relevance The primary metrics (DSC, JSC) provide a measure of overlap but may not fully capture clinical usability, particularly in terms of perforator localization accuracy. Reporting absolute localization error relative to skin landmarks (e.g., ASIS, patella) would make the findings more translatable to surgical practice. 3. Perforator classification The model segments perforators but does not distinguish between septocutaneous and musculocutaneous types, which is highly relevant for surgical planning. Even if not part of the current model, the lack of this functionality should be explicitly acknowledged as a limitation. 4. Projection to surface anatomy A critical challenge of CTA-based mapping is translating deep vascular anatomy to precise cutaneous points. The manuscript does not fully address this limitation. A comparison with ultrasound-based localization, which directly identifies perforators at the skin surface, would contextualize the clinical implications more clearly. Minor Comments The Methods section would benefit from a more formal definition of secondary outcome measures and the rationale for statistical tests used. The Results should specify whether segmentation performance differed between left and right thighs or across perforator calibers. Figures could be improved by including visual overlays of automatic versus manual segmentations for representative cases. ********** what does this mean? ). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy Reviewer #2: Yes: Franck Delanoë Reviewer #3: No Reviewer #4: Yes: Mohammadreza Bozorgmanesh ********** [NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". If this link does not appear, there are no attachment files.] While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/ . PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org . Please note that Supporting Information files do not need this step. |
| Revision 2 |
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Development of an automatic segmentation system for anterolateral thigh flap perforators in maxillofacial reconstruction PONE-D-24-59305R2 Dear Dr. Song, We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements. Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication. An invoice will be generated when your article is formally accepted. Please note, if your institution has a publishing partnership with PLOS and your article meets the relevant criteria, all or part of your publication costs will be covered. Please make sure your user information is up-to-date by logging into Editorial Manager at Editorial Manager® and clicking the ‘Update My Information' link at the top of the page. For questions related to billing, please contact billing support . If your institution or institutions have a press office, please notify them about your upcoming paper to help maximize its impact. If they’ll be preparing press materials, please inform our press team as soon as possible -- no later than 48 hours after receiving the formal acceptance. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org. Kind regards, Xiaoen Wei Academic Editor PLOS One Additional Editor Comments (optional): Reviewers' comments: Reviewer's Responses to Questions Comments to the Author Reviewer #2: All comments have been addressed ********** 2. Is the manuscript technically sound, and do the data support the conclusions??> Reviewer #2: Yes ********** 3. Has the statistical analysis been performed appropriately and rigorously? -->?> Reviewer #2: Yes ********** 4. Have the authors made all data underlying the findings in their manuscript fully available??> The PLOS Data policy Reviewer #2: Yes ********** 5. Is the manuscript presented in an intelligible fashion and written in standard English??> Reviewer #2: Yes ********** Reviewer #2: Thank you for these revisions. This research is relevant, and the methodology seems perfectly suited to the objective. Validating the reference technique through inter-operator comparison, as suggested by a reviewer, is a valid point. The main limitation remains the small number of subjects, as well as the lack of evidence of the septal or muscular pathway, as I previously mentioned. Nevertheless, the approach and model remain relevant and justify the publication of this work. I have no further comments; thank you for this work. ********** what does this mean? ). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy Reviewer #2: Yes: Franck Delanoë ********** |
| Formally Accepted |
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PONE-D-24-59305R2 PLOS One Dear Dr. Song, I'm pleased to inform you that your manuscript has been deemed suitable for publication in PLOS One. Congratulations! Your manuscript is now being handed over to our production team. At this stage, our production department will prepare your paper for publication. This includes ensuring the following: * All references, tables, and figures are properly cited * All relevant supporting information is included in the manuscript submission, * There are no issues that prevent the paper from being properly typeset You will receive further instructions from the production team, including instructions on how to review your proof when it is ready. Please keep in mind that we are working through a large volume of accepted articles, so please give us a few days to review your paper and let you know the next and final steps. Lastly, if your institution or institutions have a press office, please let them know about your upcoming paper now to help maximize its impact. If they'll be preparing press materials, please inform our press team within the next 48 hours. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org. You will receive an invoice from PLOS for your publication fee after your manuscript has reached the completed accept phase. If you receive an email requesting payment before acceptance or for any other service, this may be a phishing scheme. Learn how to identify phishing emails and protect your accounts at https://explore.plos.org/phishing. If we can help with anything else, please email us at customercare@plos.org. Thank you for submitting your work to PLOS ONE and supporting open access. Kind regards, PLOS ONE Editorial Office Staff on behalf of Dr. Xiaoen Wei Academic Editor PLOS One |
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