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Ahn HJ, Byun SH, Baek SH, Park SY, Yi SM, Park IY, On SW, Kim JC, Yang BE. A Comparative Analysis of Artificial Intelligence and Manual Methods for Three-Dimensional Anatomical Landmark Identification in Dentofacial Treatment Planning. Bioengineering (Basel) 2024; 11:318. [PMID: 38671740 PMCID: PMC11048285 DOI: 10.3390/bioengineering11040318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/20/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
With the growing demand for orthognathic surgery and other facial treatments, the accurate identification of anatomical landmarks has become crucial. Recent advancements have shifted towards using three-dimensional radiologic analysis instead of traditional two-dimensional methods, as it allows for more precise treatment planning, primarily relying on direct identification by clinicians. However, manual tracing can be time-consuming, mainly when dealing with a large number of patients. This study compared the accuracy and reliability of identifying anatomical landmarks using artificial intelligence (AI) and manual identification. Thirty patients over 19 years old who underwent pre-orthodontic and orthognathic surgery treatment and had pre-orthodontic three-dimensional radiologic scans were selected. Thirteen anatomical indicators were identified using both AI and manual methods. The landmarks were identified by AI and four experienced clinicians, and multiple ANOVA was performed to analyze the results. The study results revealed minimal significant differences between AI and manual tracing, with a maximum deviation of less than 2.83 mm. This indicates that utilizing AI to identify anatomical landmarks can be a reliable method in planning orthognathic surgery. Our findings suggest that using AI for anatomical landmark identification can enhance treatment accuracy and reliability, ultimately benefiting clinicians and patients.
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Affiliation(s)
- Hee-Ju Ahn
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; (H.-J.A.); (S.-H.B.); (S.-H.B.); (S.-Y.P.); (S.-M.Y.); (J.-C.K.)
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
| | - Soo-Hwan Byun
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; (H.-J.A.); (S.-H.B.); (S.-H.B.); (S.-Y.P.); (S.-M.Y.); (J.-C.K.)
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
| | - Sae-Hoon Baek
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; (H.-J.A.); (S.-H.B.); (S.-H.B.); (S.-Y.P.); (S.-M.Y.); (J.-C.K.)
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
| | - Sang-Yoon Park
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; (H.-J.A.); (S.-H.B.); (S.-H.B.); (S.-Y.P.); (S.-M.Y.); (J.-C.K.)
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
| | - Sang-Min Yi
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; (H.-J.A.); (S.-H.B.); (S.-H.B.); (S.-Y.P.); (S.-M.Y.); (J.-C.K.)
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
| | - In-Young Park
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
- Department of Orthodontics, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
| | - Sung-Woon On
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Hallym University Dongtan Sacred Heart Hospital, Hawseong 18450, Republic of Korea
| | - Jong-Cheol Kim
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; (H.-J.A.); (S.-H.B.); (S.-H.B.); (S.-Y.P.); (S.-M.Y.); (J.-C.K.)
- Mir Dental Hospital, Daegu 41940, Republic of Korea
| | - Byoung-Eun Yang
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea; (H.-J.A.); (S.-H.B.); (S.-H.B.); (S.-Y.P.); (S.-M.Y.); (J.-C.K.)
- Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (I.-Y.P.); (S.-W.O.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea
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Wang Y, Maimaiti A, Tuoheti A, Xiao Y, Zhang R, Kahaer A, Liu D, Rexiti P. The Method of Portal Making in Lumbar Unilateral Biportal Endoscopic Surgery with Different Operative Approaches According to the Constant Anatomical Landmarks of the Lumbar Spine: A Review of the Literature. Global Spine J 2024:21925682241230465. [PMID: 38314556 DOI: 10.1177/21925682241230465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2024] Open
Abstract
STUDY DESIGN Review. OBJECTIVE Unilateral Biportal Endoscopy (UBE) is a minimally invasive surgery that is gaining recognition and being employed in clinical practice. Nevertheless, the precise method for determining UBE portals' location varies depending on the originator's preferences or the anatomical structure's proximity to the portal positions. Consequently, the relationship among UBE portals' locations is messy. This study aims to elaborate on the specific portal localization and explore the positional association and commonality among different UBE approaches' portals. METHODS The following keywords are used to search in the PubMed, Ovid, Web of Science, ScienceDirect, SpringerLink, Scopus, CNKI, and Wanfang database: "Biportal endoscopic spinal surgery", "Two portal endoscopic spinal surgery", "Percutaneous biportal endoscopic decompression", "Unilateral biportal endoscopy", "Irrigation endoscopic discectomy", "UBE" and "BESS". RESULTS After screening, 29 pieces of literature are included. The study summarizes different UBE approach portal localizations, categorized by fusion or non-fusion surgery and pathological classification. The study presents an inaugural method for categorizing the lumber into four surgical intervals based on bone landmarks and assigns different UBE approaches to the appropriate intervals based on their characteristics, making the selection of UBE surgical approaches' portal locations more flexible. Additionally, the study provides an overview of the indications, complications, and distinct benefits associated with each interval, further refining the novel UBE portal interval localization method. CONCLUSION The study clarifies the interrelationship and commonality between the portals of different UBE approaches and proposes a new UBE portal interval localization method to enhance surgeons' understanding and proficiency in UBE procedures.
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Affiliation(s)
- Yixi Wang
- First Clinical Medical College, Xinjiang Medical University, Urumqi, China
| | - Abulikemu Maimaiti
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Abudusalamu Tuoheti
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yang Xiao
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Rui Zhang
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Alafate Kahaer
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Dongshan Liu
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Paerhati Rexiti
- Department of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Key Laboratory of High Incidence Disease Research in Xinjiang, Xinjiang Medical University, Urumqi, China
- Key Laboratory of High Incidence Disease Research in Xinjiang, Ministry of Education, Beijing, China
- Xinjiang Clinical Research Center for Orthopaedics, Science & Technology Department of Xinjiang Uygur Autonomous Region, Urumqi, China
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Hêches J, Marcadent S, Fernandez A, Adjahou S, Meuwly JY, Thiran JP, Desseauve D, Favre J. Accuracy and Reliability of Pelvimetry Measures Obtained by Manual or Automatic Labeling of Three-Dimensional Pelvic Models. J Clin Med 2024; 13:689. [PMID: 38337383 PMCID: PMC10856490 DOI: 10.3390/jcm13030689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
(1) Background: The morphology of the pelvic cavity is important for decision-making in obstetrics. This study aimed to estimate the accuracy and reliability of pelvimetry measures obtained when radiologists manually label anatomical landmarks on three-dimensional (3D) pelvic models. A second objective was to design an automatic labeling method. (2) Methods: Three operators segmented 10 computed tomography scans each. Three radiologists then labeled 12 anatomical landmarks on the pelvic models, which allowed for the calculation of 15 pelvimetry measures. Additionally, an automatic labeling method was developed based on a reference pelvic model, including reference anatomical landmarks, matching the individual pelvic models. (3) Results: Heterogeneity among landmarks in radiologists' labeling accuracy was observed, with some landmarks being rarely mislabeled by more than 4 mm and others being frequently mislabeled by 10 mm or more. The propagation to the pelvimetry measures was limited; only one out of the 15 measures reported a median error above 5 mm or 5°, and all measures showed moderate to excellent inter-radiologist reliability. The automatic method outperformed manual labeling. (4) Conclusions: This study confirmed the suitability of pelvimetry measures based on manual labeling of 3D pelvic models. Automatic labeling offers promising perspectives to decrease the demand on radiologists, standardize the labeling, and describe the pelvic cavity in more detail.
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Affiliation(s)
- Johann Hêches
- Swiss BioMotion Lab, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland;
| | - Sandra Marcadent
- Signal Processing Laboratory 5, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; (S.M.); (J.-P.T.)
| | - Anna Fernandez
- Women-Mother-Child Department, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland; (A.F.); (S.A.); (D.D.)
| | - Stephen Adjahou
- Women-Mother-Child Department, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland; (A.F.); (S.A.); (D.D.)
| | - Jean-Yves Meuwly
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland;
| | - Jean-Philippe Thiran
- Signal Processing Laboratory 5, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland; (S.M.); (J.-P.T.)
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland;
| | - David Desseauve
- Women-Mother-Child Department, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland; (A.F.); (S.A.); (D.D.)
| | - Julien Favre
- Swiss BioMotion Lab, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland;
- The Sense Innovation and Research Center, CH-1007 Lausanne, Switzerland
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Fischer CS, Ittermann T, Gonser CE, Floß M, Bülow R, Schmidt CO, Haralambiev L, Histing T, Lange J. Reference values and influencing factors of the glenohumeral subluxation index: a study on 3004 participants. J Shoulder Elbow Surg 2023; 32:2533-2540. [PMID: 37290636 DOI: 10.1016/j.jse.2023.04.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 04/17/2023] [Accepted: 04/24/2023] [Indexed: 06/10/2023]
Abstract
BACKGROUND The primary objective of this study was to examine the glenohumeral subluxation index (GHSI) in a large general population cohort and to define reference values. Glenohumeral subluxation is important in the development and prediction of pathological states of the shoulder joint and in total shoulder arthroplasty. Therefore, another objective was to examine the influence of age, sex, body mass index, and body height and weight on GHSI. METHODS GHSI according to Walch was measured on bilateral magnetic resonance imaging of 3004 participants of the Study of Health in Pomerania (SHIP, aged 21-90 years). SHIP drew a sample of the adult general population of Pomerania (Northeastern Germany). Reference values for GHSI were assessed by quantile regression models. Associations of sex, age, and anthropometric markers with the GHSI were calculated by linear regression models. RESULTS A reference range between 42% and 55% for men with a mean of 49% ± 4% was defined, while the upper reference limit for women was 1% higher (mean, 50% ± 4%). Age was inversely associated with the GHSI in males (P < 0.001), while no significant association in females was observed (P = .625). Body weight and body mass index were positively associated (P < .001) without effect modification by sex. Heavy mechanical oscillations on the upper extremity showed no significant association with GHSI (P = .268). CONCLUSION The reference values for GHSI were expanded to a range of 42%-57% on magnetic resonance imaging. Several associations between GHSI and anthropometric properties are present. According to these associations, adjusted formulas are provided to enable individual, patient-specific diagnostics and therapy. Nevertheless, the clinical picture cannot be neglected.
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Affiliation(s)
- Cornelius Sebastian Fischer
- BG Unfallklinik Tübingen, Department of Traumatology and Reconstructive Surgery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Till Ittermann
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Christoph Emanuel Gonser
- BG Unfallklinik Tübingen, Department of Traumatology and Reconstructive Surgery, Eberhard Karls University Tübingen, Tübingen, Germany.
| | - Matthias Floß
- Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Robin Bülow
- Institute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | | | - Lyubomir Haralambiev
- Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Germany; Department of Trauma and Orthopaedic Surgery, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Tina Histing
- BG Unfallklinik Tübingen, Department of Traumatology and Reconstructive Surgery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Jörn Lange
- Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Germany
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Qawasmi F, Best PD, Andryk LM, Grindel SI. Assessment of 2 distinct anatomical landmarks for suprascapular nerve injection: a cadaveric study. J Shoulder Elbow Surg 2023; 32:2376-2381. [PMID: 37178968 DOI: 10.1016/j.jse.2023.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/04/2023] [Accepted: 03/22/2023] [Indexed: 05/15/2023]
Abstract
BACKGROUND The suprascapular nerve block (SSNB) is a commonly used procedure for the management of pain in various shoulder pathologies. Both image-guided and landmark-based techniques have been utilized successfully for SSNB, though more consensus is needed regarding the optimal method of administration. This study aims to evaluate the theoretical effectiveness of a SSNB at 2 distinct anatomic landmarks and propose a simple, reliable way of administration for future clinical use. METHODS Fourteen upper extremity cadaveric specimens were randomly assigned to either receive an injection 1 cm medial to the posterior acromioclavicular (AC) joint vertex or 3 cm medial to the posterior AC joint vertex. Each shoulder was injected with a 10 ml methylene blue solution at the assigned location, and gross dissection was performed to evaluate the anatomic diffusion of the dye. The presence of dye was specifically assessed at the suprascapular notch, supraspinatus fossa, and spinoglenoid notch to determine the theoretic analgesic effectiveness of a SSNB at these 2 injection sites. RESULTS Methylene blue diffused to the suprascapular notch in 57.1% of the 1-cm group and 100% of the 3-cm group, the supraspinatus fossa in 71.4% of the 1-cm group and 100% of the 3-cm group, and the spinoglenoid notch in 100% of the 1-cm group and 42.9% of the 3-cm group. CONCLUSION Given its superior coverage at the more proximal sensory branches of the suprascapular nerve, a SSNB injection performed 3 cm medial to the posterior AC joint vertex provides more clinically adequate analgesia than an injection site 1 cm medial to the AC junction. Performing a SSNB injection at this location allows for an effective method of anesthetizing the suprascapular nerve.
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Affiliation(s)
- Feras Qawasmi
- Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Patrick D Best
- Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Logan M Andryk
- Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Steven I Grindel
- Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
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Alius C, Serban D, Bratu DG, Tribus LC, Vancea G, Stoica PL, Motofei I, Tudor C, Serboiu C, Costea DO, Serban B, Dascalu AM, Tanasescu C, Geavlete B, Cristea BM. When Critical View of Safety Fails: A Practical Perspective on Difficult Laparoscopic Cholecystectomy. Medicina (Kaunas) 2023; 59:1491. [PMID: 37629781 PMCID: PMC10456257 DOI: 10.3390/medicina59081491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/12/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023]
Abstract
The incidence of common bile duct injuries following laparoscopic cholecystectomy (LC) remains three times higher than that following open surgery despite numerous attempts to decrease intraoperative incidents by employing better training, superior surgical instruments, imaging techniques, or strategic concepts. This paper is a narrative review which discusses from a contextual point of view the need to standardise the surgical approach in difficult laparoscopic cholecystectomies, the main strategic operative concepts and techniques, complementary visualisation aids for the delineation of anatomical landmarks, and the importance of cognitive maps and algorithms in performing safer LC. Extensive research was carried out in the PubMed, Web of Science, and Elsevier databases using the terms "difficult cholecystectomy", "bile duct injuries", "safe cholecystectomy", and "laparoscopy in acute cholecystitis". The key content and findings of this research suggest there is high intersocietal variation in approaching and performing LC, in the use of visualisation aids, and in the application of safety concepts. Limited papers offer guidelines based on robust data and a timid recognition of the human factors and ergonomic concepts in improving the outcomes associated with difficult cholecystectomies. This paper highlights the most relevant recommendations for dealing with difficult laparoscopic cholecystectomies.
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Affiliation(s)
- Catalin Alius
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
- Fourth General Surgery Department, Emergency University Hospital Bucharest, 050098 Bucharest, Romania
| | - Dragos Serban
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
- Fourth General Surgery Department, Emergency University Hospital Bucharest, 050098 Bucharest, Romania
| | - Dan Georgian Bratu
- Faculty of Medicine, University “Lucian Blaga”, 550169 Sibiu, Romania; (D.G.B.)
- Department of Surgery, Emergency County Hospital Sibiu, 550245 Sibiu, Romania
| | - Laura Carina Tribus
- Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021Bucharest, Romania;
- Department of Internal Medicine, Ilfov Emergency Clinic Hospital Bucharest, 022104 Bucharest, Romania
| | - Geta Vancea
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
- Third Clinical Infectious Disease Department, Clinical Hospital of Infectious and Tropical Diseases “Dr. Victor Babes”, 030303 Bucharest, Romania
| | - Paul Lorin Stoica
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
- Fourth General Surgery Department, Emergency University Hospital Bucharest, 050098 Bucharest, Romania
| | - Ion Motofei
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
- Department of General Surgery, Emergency Clinic Hospital “Sf. Pantelimon” Bucharest, 021659 Bucharest, Romania
| | - Corneliu Tudor
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
- Fourth General Surgery Department, Emergency University Hospital Bucharest, 050098 Bucharest, Romania
| | - Crenguta Serboiu
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
| | - Daniel Ovidiu Costea
- Faculty of Medicine, Ovidius University Constanta, 900470 Constanta, Romania;
- General Surgery Department, Emergency County Hospital Constanta, 900591 Constanta, Romania
| | - Bogdan Serban
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
| | - Ana Maria Dascalu
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
| | - Ciprian Tanasescu
- Faculty of Medicine, University “Lucian Blaga”, 550169 Sibiu, Romania; (D.G.B.)
- Department of Surgery, Emergency County Hospital Sibiu, 550245 Sibiu, Romania
| | - Bogdan Geavlete
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
| | - Bogdan Mihai Cristea
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (C.A.); (G.V.); (I.M.); (C.T.); (C.S.); (B.S.); (A.M.D.); (B.G.); (B.M.C.)
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Parratte S, Daxhelet J, Argenson JN, Batailler C. The Deep-MCL Line: A Reliable Anatomical Landmark to Optimize the Tibial Cut in UKA. J Pers Med 2023; 13:jpm13050855. [PMID: 37241025 DOI: 10.3390/jpm13050855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/13/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
The extramedullary guides for the tibial resection during medial unicompartmental knee arthroplasty (UKA) are inaccurate, with an error risk in coronal and sagittal planes and cut thickness. It was our hypothesis that the use of anatomical landmarks for the tibial cut can help the surgeon to improve accuracy. The technique described in this paper is based on the use of a simple and reproducible anatomical landmark. This landmark is the line of insertion of the fibers of the deep medial collateral ligament (MCL) around the anterior half of the medial tibial plateau called the "Deep MCL insertion line". The used anatomical landmark determines the orientation (in the coronal and sagittal planes) and the thickness of the tibial cut. This landmark corresponds to the line of insertion of the fibers of the deep MCL around the anterior half of the medial tibial plateau. A consecutive series of patients who underwent primary medial UKA between 2019 and 2021 were retrospectively reviewed. A total of 50 UKA were included. The mean age at the time of surgery was 54.5 ± 6.6 years (44-79). The radiographic measurements showed very good to excellent intra-observer and inter-observer agreements. The limb and implant alignments and the tibial positioning were satisfying, with a low rate of outliers and good restoration of the native anatomy. The landmark of the insertion of deep MCL constitutes a reliable and reproducible reference for the tibial cut axis and thickness during medial UKA, independent of the wear severity.
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Affiliation(s)
- Sébastien Parratte
- Department of Orthopaedic Surgery, International Knee and Joint Centre, Hazza Bin Zayed St., Abu Dhabi P.O. Box 46705, United Arab Emirates
- Department of Orthopedics and Traumatology, St. Marguerite Hospital, Aix Marseille University, Institute of Movement and Locomotion, 270 Bd de Sainte-Marguerite, 13009 Marseille, France
| | - Jeremy Daxhelet
- Department of Orthopaedic Surgery, Clinique Saint-Luc Bouge, Rue Saint-Luc 8, 5004 Namur, Belgium
| | - Jean-Noel Argenson
- Department of Orthopedics and Traumatology, St. Marguerite Hospital, Aix Marseille University, Institute of Movement and Locomotion, 270 Bd de Sainte-Marguerite, 13009 Marseille, France
| | - Cécile Batailler
- Department of Orthopaedics, Croix Rousse Hospital, University of Lyon 1, 69004 Lyon, France
- Claude Bernard Lyon 1 University, LBMC UMR_T9406, 69100 Lyon, France
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8
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Alsufyani N, Alnamlah S, Mutaieb S, Alageel R, AlQarni M, Bukhari A, Alhajri M, AlSubaie A, Alabdulkarim M, Faden A. Virtual reality simulation of panoramic radiographic anatomy for dental students. J Dent Educ 2023. [PMID: 37191982 DOI: 10.1002/jdd.13240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/08/2023] [Accepted: 04/16/2023] [Indexed: 05/17/2023]
Abstract
PURPOSE This work aimed to utilize virtual reality (VR) in dental radiographic anatomical interpretation in junior dental students and test if it can enhance student learning, engagement, and performance. METHODS VR software for panoramic anatomy was developed. Sixty-nine first-year dental students were divided into a control group (lecture-based) and an experimental group (VR) to learn panoramic radiographic anatomy. Both groups were then tested on knowledge via a 20-question quiz. Student feedback on VR experience was collected via an online survey. RESULTS There was a statistically significant difference between lecture-based and VR students in the correct identification of anatomical landmarks. Lecture-based students scored higher in identifying the ear lobe, hyoid bone, condylar neck, and external oblique ridge, whereas VR students scored higher in identifying zygoma (Chi-squared test, p < 0.005). The VR group reported high evaluation on all perception items of the online feedback survey on their experience (Student t-test, p < 0.005). CONCLUSIONS Lecture-based students generally showed better performance in panoramic radiographic anatomy. Several structures were not correctly identified in both groups of novice students. The positive feedback of VR experience encourages future implementation in education to augment conventional methods of radiographic anatomy in dentistry with considerations to repeated exposures throughout undergraduate dental education.
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Affiliation(s)
- Noura Alsufyani
- Oral & Maxillofacial Radiology, Oral Medicine, and Diagnostic Sciences Department, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
- Department of Medicine and Dentistry, School of Dentistry, University of Alberta, Edmonton, Canada
| | - Sarah Alnamlah
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Sarah Mutaieb
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Raseel Alageel
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Mayson AlQarni
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Areej Bukhari
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Maram Alhajri
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | | | | | - Asma'a Faden
- Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
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9
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Akaishi R, Fujiwara S, Ando M, Suzuki H, Hoshida T. Identifying the Hernial Orifice in Superior Lumbar Hernia Repair by Utilizing Anatomical Landmarks on Preoperative CT. Cureus 2023; 15:e39154. [PMID: 37332402 PMCID: PMC10275651 DOI: 10.7759/cureus.39154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/17/2023] [Indexed: 06/20/2023] Open
Abstract
Superior lumbar hernias are extremely rare, and surgical repair is essential for their treatment. However, the direct observation of the hernial orifice is frequently difficult because the hernia disappears in prone or lateral positions, which is an issue when using the open approach. Therefore, using anatomical landmarks to detect the hernial orifice on preoperative CT scans may be useful for correct identification and visualization. Here, we report two cases of superior lumbar hernias successfully treated using the abovementioned method.
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Affiliation(s)
| | - Sho Fujiwara
- Surgery, Iwate Prefectural Ofunato Hospital, Ofunato, JPN
| | - Momoka Ando
- Surgery, Iwate Prefectural Ofunato Hospital, Ofunato, JPN
| | - Hiroshi Suzuki
- Surgery, Iwate Prefectural Ofunato Hospital, Ofunato, JPN
| | - Toru Hoshida
- Surgery, Iwate Prefectural Ofunato Hospital, Ofunato, JPN
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10
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Nakano Y, Abe Y, Kitago M, Yagi H, Hasegawa Y, Hori S, Koizumi W, Ojima H, Imanishi N, Kitagawa Y. Extrahepatic approach for taping the common trunk of the middle and left hepatic veins or the left hepatic vein alone in laparoscopic hepatectomy (with videos). J Hepatobiliary Pancreat Sci 2023; 30:192-201. [PMID: 35767184 DOI: 10.1002/jhbp.1212] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/02/2022] [Accepted: 06/24/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Outflow control is difficult, and techniques required for effectively handling intraoperative hemorrhage during laparoscopic hepatectomy have not previously been adequately reported. METHODS Sixteen patients underwent surgery, of which 15 underwent laparoscopic left hepatectomy and one underwent laparoscopic partial hepatectomy of the caudate lobe. Encircling and taping of the common trunk of the middle (MHV) and left hepatic veins (LHV) was performed in 12 patients, and that of the LHV alone in four patients. Surgical techniques based on anatomical landmarks and histological findings are presented with videos. Histological confirmation of the anatomical landmarks for these procedures was performed in fresh cadavers to understand the anatomical structures and layers involved. RESULTS The median procedure duration was 15 (6-25) minutes. All procedures were performed safely with no major bleeding. Histological findings showed fibrous connective tissue between the tunica adventitia of the inferior vena cava (IVC) and the Laennec's capsule of the liver. The layer of dissection was along the tunica adventitia of the IVC. CONCLUSIONS The surgical techniques for encircling and taping of the common trunk of the MHV and LHV and the LHV alone based on anatomical landmarks were feasible and could allow for efficient outflow control in laparoscopic hepatectomy.
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Affiliation(s)
- Yutaka Nakano
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yuta Abe
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Minoru Kitago
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hiroshi Yagi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yasushi Hasegawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Shutaro Hori
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Wataru Koizumi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hidenori Ojima
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Nobuaki Imanishi
- Department of Anatomy, Keio University School of Medicine, Tokyo, Japan
| | - Yuko Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
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11
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Muacevic A, Adler JR, Reese BL, Lindsey T. The Confidence and Accuracy of Medical Students Trained in Ultrasound or Landmarks for Performing Knee Aspiration. Cureus 2022; 14:e31722. [PMID: 36569740 PMCID: PMC9771572 DOI: 10.7759/cureus.31722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Medical students are trained using anatomical landmarks in order to perform many procedures, such as knee aspirations. With the growing popularity and use of ultrasound, the question arises whether training students with ultrasound instead of landmarks increases their skill. Previous research has shown increased accuracy and confidence in residents who trained with ultrasound compared to landmarks only. No studies to date have analyzed the effect of ultrasound learning versus landmark learning in medical students. Objective The purpose of this study is to analyze the confidence and accuracy of medical students when taught knee aspiration using ultrasound training compared to students taught with landmarks only. Methods The project was deemed exempt by the Edward Via College of Osteopathic Medicine (VCOM) Institutional Review Board (IRB) because it falls under the quality improvement category (IRB number 1806802-1). Subjects were randomized into two groups: one trained in ultrasound and one trained in landmarks for performing knee aspirations. Both groups were tested for accuracy by the ability to aspirate fluid from the model and the number of attempts; each student was given a maximum of three attempts. Documentation included the number of attempts for each student or "no fluid" for those exceeding three attempts. They were then surveyed for confidence. The study took place in an educational setting at VCOM-Carolinas. A total of 42 first-year medical students participated in this study. Results Fisher's exact test showed statistically significant results for confidence (p<0.001) between the ultrasound group (N=22) and non-ultrasound group (N=20) with a power of 0.285. The accuracy of aspirating fluid was not found to be statistically significant (p=0.4805). Conclusions Although no significant differences in the accuracy of knee aspirations at short term were seen, there was a clear improvement in student confidence and perceived capability of the skill. Those students who learned using ultrasound-guided techniques were more confident in their ability to accurately perform the technique when compared to their peers.
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12
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Fidon L, Viola E, Mufti N, David AL, Melbourne A, Demaerel P, Ourselin S, Vercauteren T, Deprest J, Aertsen M. A spatio-temporal atlas of the developing fetal brain with spina bifida aperta. Open Res Eur 2022; 1:123. [PMID: 37645096 PMCID: PMC10445840 DOI: 10.12688/openreseurope.13914.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/25/2022] [Indexed: 08/31/2023]
Abstract
Background: Spina bifida aperta (SBA) is a birth defect associated with severe anatomical changes in the developing fetal brain. Brain magnetic resonance imaging (MRI) atlases are popular tools for studying neuropathology in the brain anatomy, but previous fetal brain MRI atlases have focused on the normal fetal brain. We aimed to develop a spatio-temporal fetal brain MRI atlas for SBA. Methods: We developed a semi-automatic computational method to compute the first spatio-temporal fetal brain MRI atlas for SBA. We used 90 MRIs of fetuses with SBA with gestational ages ranging from 21 to 35 weeks. Isotropic and motion-free 3D reconstructed MRIs were obtained for all the examinations. We propose a protocol for the annotation of anatomical landmarks in brain 3D MRI of fetuses with SBA with the aim of making spatial alignment of abnormal fetal brain MRIs more robust. In addition, we propose a weighted generalized Procrustes method based on the anatomical landmarks for the initialization of the atlas. The proposed weighted generalized Procrustes can handle temporal regularization and missing annotations. After initialization, the atlas is refined iteratively using non-linear image registration based on the image intensity and the anatomical land-marks. A semi-automatic method is used to obtain a parcellation of our fetal brain atlas into eight tissue types: white matter, ventricular system, cerebellum, extra-axial cerebrospinal fluid, cortical gray matter, deep gray matter, brainstem, and corpus callosum. Results: An intra-rater variability analysis suggests that the seven anatomical land-marks are sufficiently reliable. We find that the proposed atlas outperforms a normal fetal brain atlas for the automatic segmentation of brain 3D MRI of fetuses with SBA. Conclusions: We make publicly available a spatio-temporal fetal brain MRI atlas for SBA, available here: https://doi.org/10.7303/syn25887675. This atlas can support future research on automatic segmentation methods for brain 3D MRI of fetuses with SBA.
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Affiliation(s)
- Lucas Fidon
- School of Biomedical Engineering & Imaging Sciences, King’s College London, London, SE1 7EU, UK
| | - Elizabeth Viola
- School of Biomedical Engineering & Imaging Sciences, King’s College London, London, SE1 7EU, UK
| | - Nada Mufti
- School of Biomedical Engineering & Imaging Sciences, King’s College London, London, SE1 7EU, UK
- Elizabeth Garrett Anderson Institute for Women’s Health, University College London, London, WC1E 6DB, UK
| | - Anna L. David
- Elizabeth Garrett Anderson Institute for Women’s Health, University College London, London, WC1E 6DB, UK
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Andrew Melbourne
- School of Biomedical Engineering & Imaging Sciences, King’s College London, London, SE1 7EU, UK
| | - Philippe Demaerel
- Department of Radiology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Sébastien Ourselin
- School of Biomedical Engineering & Imaging Sciences, King’s College London, London, SE1 7EU, UK
| | - Tom Vercauteren
- School of Biomedical Engineering & Imaging Sciences, King’s College London, London, SE1 7EU, UK
| | - Jan Deprest
- Elizabeth Garrett Anderson Institute for Women’s Health, University College London, London, WC1E 6DB, UK
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, 3000 Leuven, Belgium
- Department of Radiology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Michael Aertsen
- Department of Radiology, University Hospitals Leuven, 3000 Leuven, Belgium
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13
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Olczak K, Pawlicka H, Szymański W. Root and canal morphology of the maxillary second premolars as indicated by cone beam computed tomography. AUST ENDOD J 2022; 49:92-103. [PMID: 35502481 DOI: 10.1111/aej.12624] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 03/17/2022] [Accepted: 04/04/2022] [Indexed: 01/22/2023]
Abstract
The aim was to evaluate the morphology of maxillary second premolars. The root canal configurations were classified according to Vertucci and a new system by Ahmed et al. based on CBCT images. In addition, the number of roots and the level where they bifurcated were identified, and morphological measurements were performed based on anatomical landmarks. Single-rooted forms were most common. Bifurcation occurred most often in the middle part of the root. The most common canal configuration was type I according to Vertucci and code 1 SP1 according to the new classification. The measurements showing the results were as follows (mm): palatal cusp/buccal cusp/the lowest point of the occlusal surface to pulp chamber ceiling 6.18/6.54/4.77; the ceiling of the pulp chamber was found at the CEJ in 92.28% of the specimens. The maxillary second premolars tended to be single-rooted and with one root canal.
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Affiliation(s)
- Katarzyna Olczak
- Department of Endodontics, Medical University of Lodz, Lodz, Poland
| | - Halina Pawlicka
- Department of Endodontics, Medical University of Lodz, Lodz, Poland
| | - Witold Szymański
- Institute of Materials Science and Engineering, Lodz University of Technology, Lodz, Poland
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14
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Cardini A, de Jong YA, Butynski TM. Can morphotaxa be assessed with photographs? Estimating the accuracy of two-dimensional cranial geometric morphometrics for the study of threatened populations of African monkeys. Anat Rec (Hoboken) 2021; 305:1402-1434. [PMID: 34596361 PMCID: PMC9298422 DOI: 10.1002/ar.24787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 11/09/2022]
Abstract
The classification of most mammalian orders and families is under debate and the number of species is likely greater than currently recognized. Improving taxonomic knowledge is crucial, as biodiversity is in rapid decline. Morphology is a source of taxonomic knowledge, and geometric morphometrics applied to two dimensional (2D) photographs of anatomical structures is commonly employed for quantifying differences within and among lineages. Photographs are informative, easy to obtain, and low cost. 2D analyses, however, introduce a large source of measurement error when applied to crania and other highly three dimensional (3D) structures. To explore the potential of 2D analyses for assessing taxonomic diversity, we use patas monkeys (Erythrocebus), a genus of large, semi-terrestrial, African guenons, as a case study. By applying a range of tests to compare ventral views of adult crania measured both in 2D and 3D, we show that, despite inaccuracies accounting for up to one-fourth of individual shape differences, results in 2D almost perfectly mirror those in 3D. This apparent paradox might be explained by the small strength of covariation in the component of shape variance related to measurement error. A rigorous standardization of photographic settings and the choice of almost coplanar landmarks are likely to further improve the correspondence of 2D to 3D shapes. 2D geometric morphometrics is, thus, appropriate for taxonomic comparisons of patas ventral crania. Although it is too early to generalize, our results corroborate similar findings from previous research in mammals, and suggest that 2D shape analyses are an effective heuristic tool for morphological investigation of small differences.
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Affiliation(s)
- Andrea Cardini
- Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Modena, Italy.,School of Anatomy, Physiology and Human Biology, The University of Western Australia, Crawley, Western Australia, Australia
| | - Yvonne A de Jong
- Eastern Africa Primate Diversity and Conservation Program and Lolldaiga Hills Research Programme, Nanyuki, Kenya
| | - Thomas M Butynski
- Eastern Africa Primate Diversity and Conservation Program and Lolldaiga Hills Research Programme, Nanyuki, Kenya
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15
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Ledwoń D, Danch-Wierzchowska M, Bugdol M, Bibrowicz K, Szurmik T, Myśliwiec A, Mitas AW. Real-Time Back Surface Landmark Determination Using a Time-of-Flight Camera. Sensors (Basel) 2021; 21:s21196425. [PMID: 34640745 PMCID: PMC8512900 DOI: 10.3390/s21196425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 12/12/2022]
Abstract
Postural disorders, their prevention, and therapies are still growing modern problems. The currently used diagnostic methods are questionable due to the exposure to side effects (radiological methods) as well as being time-consuming and subjective (manual methods). Although the computer-aided diagnosis of posture disorders is well developed, there is still the need to improve existing solutions, search for new measurement methods, and create new algorithms for data processing. Based on point clouds from a Time-of-Flight camera, the presented method allows a non-contact, real-time detection of anatomical landmarks on the subject’s back and, thus, an objective determination of trunk surface metrics. Based on a comparison of the obtained results with the evaluation of three independent experts, the accuracy of the obtained results was confirmed. The average distance between the expert indications and method results for all landmarks was 27.73 mm. A direct comparison showed that the compared differences were statically significantly different; however, the effect was negligible. Compared with other automatic anatomical landmark detection methods, ours has a similar accuracy with the possibility of real-time analysis. The advantages of the presented method are non-invasiveness, non-contact, and the possibility of continuous observation, also during exercise. The proposed solution is another step in the general trend of objectivization in physiotherapeutic diagnostics.
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Affiliation(s)
- Daniel Ledwoń
- Faculty of Biomedical Engineering, Silesian University of Technology, 41-800 Zabrze, Poland; (M.D.-W.); (M.B.); (A.W.M.)
- Correspondence:
| | - Marta Danch-Wierzchowska
- Faculty of Biomedical Engineering, Silesian University of Technology, 41-800 Zabrze, Poland; (M.D.-W.); (M.B.); (A.W.M.)
| | - Marcin Bugdol
- Faculty of Biomedical Engineering, Silesian University of Technology, 41-800 Zabrze, Poland; (M.D.-W.); (M.B.); (A.W.M.)
| | - Karol Bibrowicz
- Science and Research Center of Body Posture, College of Education and Therapy in Poznań, 61-473 Poznań, Poland;
| | - Tomasz Szurmik
- Faculty of Arts and Educational Science, University of Silesia, 43-400 Cieszyn, Poland;
| | - Andrzej Myśliwiec
- Laboratory of Physiotherapy and Physioprevention, Institute of Physiotherapy and Health Science, Academy of Physical Education in Katowice, 40-065 Katowice, Poland;
| | - Andrzej W. Mitas
- Faculty of Biomedical Engineering, Silesian University of Technology, 41-800 Zabrze, Poland; (M.D.-W.); (M.B.); (A.W.M.)
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16
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Kostov S, Kornovski Y, Slavchev S, Ivanova Y, Dzhenkov D, Dimitrov N, Yordanov A. Pelvic Lymphadenectomy in Gynecologic Oncology-Significance of Anatomical Variations. Diagnostics (Basel) 2021; 11:diagnostics11010089. [PMID: 33430363 PMCID: PMC7825766 DOI: 10.3390/diagnostics11010089] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/03/2021] [Accepted: 01/05/2021] [Indexed: 01/15/2023] Open
Abstract
Pelvic lymphadenectomy is a common surgical procedure in gynecologic oncology. Pelvic lymph node dissection is performed for all types of gynecological malignancies to evaluate the extent of a disease and facilitate further treatment planning. Most studies examine the lymphatic spread, the prognostic, and therapeutic significance of the lymph nodes. However, there are very few studies describing the possible surgical approaches and the anatomical variations. Moreover, a correlation between anatomical variations and lymphadenectomy in the pelvic region has never been discussed in medical literature. The present article aims to expand the limited knowledge of the anatomical variations in the pelvis. Anatomical variations of the ureters, pelvic vessels, and nerves and their significance to pelvic lymphadenectomy are summarized, explained, and illustrated. Surgeons should be familiar with pelvic anatomy and its variations to safely perform a pelvic lymphadenectomy. Learning the proper lymphadenectomy technique relating to anatomical landmarks and variations may decrease morbidity and mortality. Furthermore, accurate description and analysis of the majority of pelvic anatomical variations may impact not only gynecological surgery, but also spinal surgery, urology, and orthopedics.
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Affiliation(s)
- Stoyan Kostov
- Department of Gynecology, Medical University Varna “Prof. Dr. Paraskev Stoyanov”, 9002 Varna, Bulgaria; (S.K.); (Y.K.); (S.S.); (Y.I.)
| | - Yavor Kornovski
- Department of Gynecology, Medical University Varna “Prof. Dr. Paraskev Stoyanov”, 9002 Varna, Bulgaria; (S.K.); (Y.K.); (S.S.); (Y.I.)
| | - Stanislav Slavchev
- Department of Gynecology, Medical University Varna “Prof. Dr. Paraskev Stoyanov”, 9002 Varna, Bulgaria; (S.K.); (Y.K.); (S.S.); (Y.I.)
| | - Yonka Ivanova
- Department of Gynecology, Medical University Varna “Prof. Dr. Paraskev Stoyanov”, 9002 Varna, Bulgaria; (S.K.); (Y.K.); (S.S.); (Y.I.)
| | - Deyan Dzhenkov
- Department of General and Clinical Pathology, Forensic Medicine and Deontology, Division of General and Clinical Pathology, Faculty of Medicine, Medical University Varna “Prof. Dr. Paraskev Stoyanov”, 9002 Varna, Bulgaria;
| | - Nikolay Dimitrov
- Department of Anatomy, Faculty of Medicine, Trakia University, 6000 Stara Zagora, Bulgaria;
| | - Angel Yordanov
- Department of Gynecologic Oncology, Medical University Pleven, 5800 Pleven, Bulgaria
- Correspondence:
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17
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Buetti N, Mimoz O, Mermel L, Ruckly S, Mongardon N, Dupuis C, Mira JP, Lucet JC, Mégarbane B, Bailly S, Parienti JJ, Timsit JF. Ultrasound Guidance and Risk for Central Venous Catheter-Related Infections in the Intensive Care Unit: A Post Hoc Analysis of Individual Data of 3 Multicenter Randomized Trials. Clin Infect Dis 2020; 73:e1054-e1061. [PMID: 33277646 DOI: 10.1093/cid/ciaa1817] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Ultrasound (US) guidance is frequently used in critically ill patients for central venous catheter (CVC) insertion. The effect of US on infectious risk remains controversial, and randomized controlled trials (RCTs) have assessed mainly noninfectious complications. This study assessed infectious risk associated with catheters inserted with US guidance vs use of anatomical landmarks. METHODS We used individual data from 3 large RCTs for which a prospective, high-quality data collection was performed. Adult patients were recruited in various intensive care units (ICUs) in France as soon as they required short-term CVC insertion. We applied marginal Cox models with inverse probability weighting to estimate the effect of US-guided insertion on catheter-related bloodstream infections (CRBSIs, primary outcome) and major catheter-related infections (MCRIs, secondary outcome).We also evaluated insertion site colonization at catheter removal. RESULTS Our post hoc analysis included 4636 patients and 5502 catheters inserted in 2088 jugular, 1733 femoral, and 1681 subclavian veins, in 19 ICUs. US guidance was used for 2147 catheter insertions. Among jugular and femoral CVCs and after weighting, we found an association between US and CRBSI (hazard ratio [HR], 2.21 [95% confidence interval {CI}, 1.17-4.16]; P = .014) and between US and MCRI (HR, 1.55 [95% CI, 1.01-2.38]; P = .045). Catheter insertion site colonization at removal was more common in the US-guided group (P = .0045) among jugular and femoral CVCs in situ for ≤7 days (n = 606). CONCLUSIONS In prospectively collected data in which catheters were not randomized to insertion by US or anatomical landmarks, US guidance was associated with increased risk of infection.
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Affiliation(s)
- Niccolò Buetti
- University of Paris, INSERM, IAME, Paris, France.,Infection Control Program and WHO Collaborating Centre on Patient Safety, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Olivier Mimoz
- Services des Urgences Adultes and SAMU 86, Centre Hospitalier Universitaire de Poitiers, Université de Poitiers, INSERM, Poitiers, France
| | - Leonard Mermel
- Division of Infectious Diseases, Rhode Island Hospital and Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | | | - Nicolas Mongardon
- Service d'Anesthésie-Réanimation Chirurgicale, Hôpitaux Universitaires Henri Mondor, DMU CARE, Assistance Publique-Hôpitaux de Paris, Inserm U955 équipe 3, Faculté de Santé, Université Paris-Est Créteil, Créteil, France
| | | | - Jean-Paul Mira
- Groupe Hospitalier Paris Centre, Cochin University Hospital, Assistance Publique-Hôpitaux de Paris, Paris University, Paris, France
| | - Jean-Christophe Lucet
- University of Paris, INSERM, IAME, Paris, France.,Infection Control Unit, Bichat- Claude Bernard University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Bruno Mégarbane
- Réanimation Médicale et Toxicologique, Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, INSERM UMRS-1144, Université de Paris, Paris, France
| | - Sébastien Bailly
- Université Grenoble Alpes, Inserm U1042, HP2, and EFCR Laboratory, Grenoble Alpes University Hospital, Grenoble, France
| | - Jean-Jacques Parienti
- Department of Biostatistics and Clinical Research, Caen University Hospital, Caen, France.,Equipe d'Accueil 2656, Groupe de Recherche sur l'Adaptation Microbienne (GRAM 2.0), Université Caen Normandie, Caen, France
| | - Jean-François Timsit
- University of Paris, INSERM, IAME, Paris, France.,Medical and Infectious Diseases Intensive Care Unit, Bichat-Claude Bernard University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
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18
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Marzook HA, Elgendy AA, Darweesh FA. New accessory palatine canals and foramina in cone beam computed tomography. Folia Morphol (Warsz) 2020; 80:954-962. [PMID: 32964408 DOI: 10.5603/fm.a2020.0114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/29/2020] [Accepted: 09/03/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND Palatal surgeries are associated with many complications. Accessory foramina may be a cause of concern. The aim of the present study was to assess the occurrence and to evaluate the anatomical features of accessory palatine foramina and their bony canals using cone beam computed tomography (CBCT). MATERIALS AND METHODS The incidence, location, and types of foramina on the palate were evaluated in 170 CBCT scans. Readings from coronal, sagittal, and axial planes were recorded using Planmeca Romexis Viewer 5.4.1.R. computer program. Data were tabulated and evaluated. RESULTS Other than nasopalatine, greater and lesser palatine foramina, 278 foramina were observed in the palatal surface of the upper jaw in different locations. New accessory palatine foramina were found posteriorly in 14.71% of the studied scans with wide anatomical variations. Unusual foraminal canals were seen crossing the floor of the maxillary sinus laterally. The incidence of the anterior accessory palatine foramina was 73.53%. Bilateral accessory palatine foramina were found in 43.53% of cases. CONCLUSIONS Accessory palatine foramina and their bony canals are frequently seen in CBCT with wide anatomical variations. New unusual connecting canals are found passing from palatine foramina to the lateral wall of the maxillary sinus through the sinus floor. These findings should be considered when planning for anesthesia and surgery in the palate.
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Affiliation(s)
- H A Marzook
- Mansoura University, Faculty of Dentistry, Elgomhoria street, 35516 Mansouura, Egypt.
| | - A A Elgendy
- Zagazig University, Faculty of Dentistry, Zagazig, Egypt
| | - F A Darweesh
- Zagazig University, Faculty of Dentistry, Zagazig, Egypt
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19
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Mizia E, Pekala PA, Skinningsrud B, Rutowicz B, Piekos P, Baginski A, Tomaszewski KA. The anatomical landmarks effective in the localisation of the median nerve during orthopaedic procedures. Folia Morphol (Warsz) 2020; 80:248-254. [PMID: 32394419 DOI: 10.5603/fm.a2020.0049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 03/30/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND The aim of this study was to create a safe zone for surgeons who perform procedures in the wrist to avoid iatrogenic damage to the median nerve (MN) by identifying anatomical landmarks using ultrasound (USG). MATERIALS AND METHODS We measured the distances between the MN and two easily identifiable anatomical landmarks at the level of the proximal border of carpal ligament using USG. RESULTS A total of 57 volunteers (n = 114 upper limbs) were included in this study. Our main findings revealed that the distance from the flexor carpi radialis tendon to MN (FCR-MN) was 7.87 mm (95% confidence interval 7.37-8.37) and the distance from flexor carpi ulnaris tendon to MN (FCU-MN) was 19.09 mm (95% confidence interval 18.51-19.67). CONCLUSIONS The tendons of FCR and FCU are easily identifiable landmarks that can be distinguished using simple palpation. Based on our USG findings, the area around FCR should be carefully navigated to avoid iatrogenic injury to the MN during surgical procedures around the carpal tunnel.
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Affiliation(s)
- E Mizia
- Department of Anatomy, Jagiellonian University Medical College, Krakow, Poland.
| | - P A Pekala
- Department of Anatomy, Jagiellonian University Medical College, Krakow, Poland.,International Evidence-Based Anatomy Working Group, Krakow, Poland
| | - B Skinningsrud
- Department of Anatomy, Jagiellonian University Medical College, Krakow, Poland.,International Evidence-Based Anatomy Working Group, Krakow, Poland
| | - B Rutowicz
- Department of Anatomy, Jagiellonian University Medical College, Krakow, Poland
| | - P Piekos
- Department of Anatomy, Jagiellonian University Medical College, Krakow, Poland.,International Evidence-Based Anatomy Working Group, Krakow, Poland
| | - A Baginski
- Department of Anatomy, Jagiellonian University Medical College, Krakow, Poland
| | - K A Tomaszewski
- International Evidence-Based Anatomy Working Group, Krakow, Poland.,Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, Krakow, Poland
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20
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Leite JGDS, Nogueira JF, Pallanch J, da Costa TC, Feijão MX, Querido RDSLF, Cavalcante MLC. "M" line: New anatomical landmark for the maxillary sinus natural ostium. Clin Otolaryngol 2020; 45:177-181. [PMID: 31574207 DOI: 10.1111/coa.13456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 09/11/2019] [Accepted: 09/23/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Describe a reliable anatomical landmark that can be used to locate the maxillary sinus natural ostium (MSNO) during endoscopic surgery, even if the uncinate process is preserved. DESIGN Descriptive anatomical. SETTING An anatomical and radiological study was performed to evaluate the consistency of the landmark, denominated "M" line. SUBJECTS AND METHODS Dissections were performed in 57 cadaver heads (114 sides). In addition, 73 computerised tomography (CT) scans (146 sides) of patients with chronic inflammatory sinonasal disease were analysed using a three-dimensional (3D) reconstruction computer program. RESULTS The "M" line crossed the MSNO in 112 dissected sides (98.2%) and 140 sides at CT 3D reconstruction (95.9%). CONCLUSION The "M" line is a reliable anatomical landmark for predicting MSNO location. As such, it could improve and facilitate endoscopic sinus surgery, using traditional, minimally invasive or uncinate preserving techniques.
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21
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Van Hauwermeiren L, Verstraete M, Stouthandel MEJ, Van Oevelen A, De Gersem W, Delrue L, Achten E, Adriaens D, Van Hoof T. Joint coordinate system for biomechanical analysis of the sacroiliac joint. J Orthop Res 2019; 37:1101-1109. [PMID: 30839121 DOI: 10.1002/jor.24271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 02/17/2019] [Indexed: 02/04/2023]
Abstract
Sacroiliac joint (SIJ) biomechanics have been described in both in vitro and in vivo studies. A standard for joint coordinate systems has been created by the International Society of Biomechanics for most of the joints in the human body. However, a standardized joint coordinate system for sacroiliac joint motion analysis is currently still lacking. This impedes the comparison across studies and hinders communication among scientists and clinicians. As SIJ motion is reported to be quite limited, a proper standardization and reproducibility of this procedure is essential for the interpretation of future biomechanical SIJ studies. This paper proposes a joint coordinate system for the analysis of sacroiliac joint motion, based on the procedure developed by Grood and Suntay, using semi-automated anatomical landmarks on 3D joint surfaces. This coordinate system offers high inter-rater reliability and aspires to a more intuitive representation of biomechanical data, as it is aligned with SIJ articular surfaces. This study aims to encourage further reflection and debate on biomechanical data representation, in order to facilitate interpretation of SIJ biomechanics and improve communication between researchers and clinicians. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.
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Affiliation(s)
| | - Matthias Verstraete
- Department of Physical Medicine and Orthopedic Surgery, Ghent University, Ghent, Belgium
| | - Michael E J Stouthandel
- Department of Radiation Oncology and Experimental Cancer Research, Ghent University, Ghent, Belgium
| | - Aline Van Oevelen
- Department of Anatomy and Embryology, Ghent University, Ghent, Belgium
| | - Werner De Gersem
- Department of Radiation Oncology and Experimental Cancer Research, Ghent University, Ghent, Belgium
| | - Louke Delrue
- Department of Radiology and Nuclear Medicine, Ghent University Hospital, Ghent, Belgium
| | - Eric Achten
- Department of Radiology and Nuclear Medicine, Ghent University Hospital, Ghent, Belgium
| | - Dominique Adriaens
- Department of Biology (Evolutionary Morphology of Vertebrates), Ghent University, Ghent, Belgium
| | - Tom Van Hoof
- Department of Radiation Oncology and Experimental Cancer Research, Ghent University, Ghent, Belgium
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22
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Brehler M, Thawait G, Kaplan J, Ramsay J, Tanaka MJ, Demehri S, Siewerdsen JH, Zbijewski W. Atlas-based algorithm for automatic anatomical measurements in the knee. J Med Imaging (Bellingham) 2019; 6:026002. [PMID: 31259202 PMCID: PMC6582228 DOI: 10.1117/1.jmi.6.2.026002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 06/04/2019] [Indexed: 11/14/2022] Open
Abstract
We present an algorithm for automatic anatomical measurements in tomographic datasets of the knee. The algorithm uses a set of atlases, each consisting of a knee image, surface segmentations of the bones, and locations of landmarks required by the anatomical metrics. A multistage volume-to-volume and surface-to-volume registration is performed to transfer the landmarks from the atlases to the target volume. Manual segmentation of the target volume is not required in this approach. Metrics were computed from the transferred landmarks of a best-matching atlas member (different for each bone), identified based on a mutual information criterion. Leave-one-out validation of the algorithm was performed on 24 scans of the knee obtained using extremity cone-beam computed tomography. Intraclass correlation (ICC) between the algorithm and the expert who generated atlas landmarks was above 0.95 for all metrics. This compares favorably to inter-reader ICC, which varied from 0.19 to 0.95, depending on the metric. Absolute agreement with the expert was also good, with median errors below 0.25 deg for measurements of tibial slope and static alignment, and below 0.2 mm for tibial tuberosity-trochlear groove distance and medial tibial depth. The automatic approach is anticipated to improve measurement workflow and mitigate the effects of operator experience and training on reliability of the metrics.
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Affiliation(s)
- Michael Brehler
- Johns Hopkins University, Department of Biomedical Engineering, Baltimore, Maryland, United States
| | - Gaurav Thawait
- Johns Hopkins University, Russell H. Morgan Department of Radiology, Baltimore, Maryland, United States
| | - Jonathan Kaplan
- U.S. Army Natick Soldier Systems Center, Natick, Massachusetts, United States
| | - John Ramsay
- U.S. Army Natick Soldier Systems Center, Natick, Massachusetts, United States
| | - Miho J. Tanaka
- Johns Hopkins University, Department of Orthopaedic Surgery, Baltimore, Maryland, United States
| | - Shadpour Demehri
- Johns Hopkins University, Russell H. Morgan Department of Radiology, Baltimore, Maryland, United States
| | - Jeffrey H. Siewerdsen
- Johns Hopkins University, Department of Biomedical Engineering, Baltimore, Maryland, United States
- Johns Hopkins University, Russell H. Morgan Department of Radiology, Baltimore, Maryland, United States
| | - Wojciech Zbijewski
- Johns Hopkins University, Department of Biomedical Engineering, Baltimore, Maryland, United States
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23
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Liu M, Zhang J, Nie D, Yap PT, Shen D. Anatomical Landmark Based Deep Feature Representation for MR Images in Brain Disease Diagnosis. IEEE J Biomed Health Inform 2018; 22:1476-1485. [PMID: 29994175 PMCID: PMC6238951 DOI: 10.1109/jbhi.2018.2791863] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Most automated techniques for brain disease diagnosis utilize hand-crafted (e.g., voxel-based or region-based) biomarkers from structural magnetic resonance (MR) images as feature representations. However, these hand-crafted features are usually high-dimensional or require regions-of-interest defined by experts. Also, because of possibly heterogeneous property between the hand-crafted features and the subsequent model, existing methods may lead to sub-optimal performances in brain disease diagnosis. In this paper, we propose a landmark-based deep feature learning (LDFL) framework to automatically extract patch-based representation from MRI for automatic diagnosis of Alzheimer's disease. We first identify discriminative anatomical landmarks from MR images in a data-driven manner, and then propose a convolutional neural network for patch-based deep feature learning. We have evaluated the proposed method on subjects from three public datasets, including the Alzheimer's disease neuroimaging initiative (ADNI-1), ADNI-2, and the minimal interval resonance imaging in alzheimer's disease (MIRIAD) dataset. Experimental results of both tasks of brain disease classification and MR image retrieval demonstrate that the proposed LDFL method improves the performance of disease classification and MR image retrieval.
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24
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Tafti N, Karimlou M, Mardani MA, Jafarpisheh AS, Aminian GR, Safari R. Development and preliminary evaluation of a new anatomically based prosthetic alignment method for below-knee prosthesis. Assist Technol 2018; 32:38-46. [PMID: 29676961 DOI: 10.1080/10400435.2018.1467513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
The objectives of current study were to a) assess similarities and relationships between anatomical landmark-based angles and distances of lower limbs in unilateral transtibial amputees and b) develop and evaluate a new anatomically based static prosthetic alignment method. First substudy assessed the anthropometrical differences and relationships between the lower limbs in the photographs taken from amputees. Data were analyzed via paired t-test and regression analysis. Results show no significant differences in frontal and transverse planes. In the sagittal plane, the anthropometric parameters of the amputated limb were significantly correlated to the corresponding variables of the sound limb. The results served as bases for the development of a new prosthetic alignment method. The method was evaluated on a single-subject study. Prosthetic alignment carried out by an experienced prosthetist was compared with such alignment adjusted by an inexperienced prosthetist but with the use of the developed method. In sagittal and frontal planes, the socket angle was tuned with respect to the shin angle, and the position of the prosthetic foot was tuned in relation to the pelvic landmarks. Further study is needed to assess the proposed method on a larger sample of amputees and prosthetists.
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Affiliation(s)
- Nahid Tafti
- Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Masoud Karimlou
- Department of Epidemiology and Biostatistics, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Ali Mardani
- Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Amir Salar Jafarpisheh
- Department of Ergonomics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Gholam Reza Aminian
- Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Reza Safari
- Health and Social Care Research Centre, University of Derby, Derby, England, UK
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25
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Kieser DC, Coudert P, Cawley DT, Gaignard E, Fujishiro T, Farah K, Boissiere L, Obeid I, Pointillart V, Vital JM, Gille O. Identifying the superior and inferior gluteal arteries during a sacrectomy via a posterior approach. J Spine Surg 2018; 3:624-629. [PMID: 29354741 DOI: 10.21037/jss.2017.12.06] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Identifying the gluteal vessels during a posterior sacrectomy can be challenging. This study defines anatomical landmarks that can be used to approximate the location of the superior and inferior gluteal arteries (SGA and IGA) during a posterior sacrectomy. Methods Cadaveric dissection of six fresh adult pelvises to determine the location of the SGA and IGA in relation to the posterior-inferior aspect of the sacroiliac joint (PISIJ), lateral sacral margin and sacrococcygeal joint (SCJ). Results The anatomical landmarks are easily palpable. The position of the SGA to the PISIJ is relatively constant as it is tethered by a posterior branch of the artery, which runs inferior to the PISIJ. The IGA position is also relatively constant below the mid-point of the PISIJ and SCJ. The vessels are separated from the sacrospinous/sacrotuberous ligament complex (SSTL) in the perisacral region and as a result an anatomical plane exists anterior to the SSTL, which affords protection of the vessels during SSTL transection. The distance between the vessels and the SSTL increases the more medial the dissection. Conclusions The described anatomical landmarks can be used to predict the location of the SGA and IGA during posterior sacrectomy. An anatomical plane exists anterior to the SSTL, which provides protection to the vessels during SSTL transection. Furthermore, the distance between the vessels and the SSTL increases the more medial the dissection, thus, resection of the SSTL as close to the lateral sacral margin as the pathology permits, is advocated.
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Affiliation(s)
- David Christopher Kieser
- Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, New Zealand
| | - Pierre Coudert
- L'Institut de la Colonne Vertébrale, CHU Pellegrin, Bordeaux, France
| | | | - Elodie Gaignard
- Hepatobiliary and Intestinal Surgery Service, Centre Hospitalier Universitaire Hôpital Pontchaillou, Rennes, France
| | - Takashi Fujishiro
- L'Institut de la Colonne Vertébrale, CHU Pellegrin, Bordeaux, France
| | - Kaissar Farah
- L'Institut de la Colonne Vertébrale, CHU Pellegrin, Bordeaux, France
| | - Louis Boissiere
- L'Institut de la Colonne Vertébrale, CHU Pellegrin, Bordeaux, France
| | - Ibrahim Obeid
- L'Institut de la Colonne Vertébrale, CHU Pellegrin, Bordeaux, France
| | | | - Jean-Marc Vital
- L'Institut de la Colonne Vertébrale, CHU Pellegrin, Bordeaux, France
| | - Olivier Gille
- L'Institut de la Colonne Vertébrale, CHU Pellegrin, Bordeaux, France
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26
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Tee JW, Rutges J, Marion T, Street J, Paquette S, Ailon T, Kwon BK, Dvorak M, Boyd M. Factors predictive of topographical accuracy in spine level localization. J Spine Surg 2017; 3:23-30. [PMID: 28435914 DOI: 10.21037/jss.2017.02.06] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Pre-operative spine level localization by palpation of anatomical landmarks (ribs, spinous processes) in posterior approaches for surgeries from T4 to L2 is often inaccurate. This can lead to ineffective utilization of procedural time, increased radiation dose, potentially longer skin incision and wrong level surgery. Factors affecting topographical accuracy includes body mass index (BMI) of the patient, congenital or acquired deformity and knowledge of topographical anatomy. METHODS All patients had the presumed location of their pathology marked on the skin using anatomical landmarks prior to application of the Target Tape® (Vancouver, BC, Canada) and verification using an anterior-posterior radiograph. Potential factors predictive of accurate pre-operative spine level localization such as age, gender, BMI, palpable deformity, pathology related interspinous distance (ISPD) and pathology related skin to spinous process distance were evaluated. RESULTS A prospective study was performed with 30 consecutive patients undergoing posterior spine surgery (T4 to L2). Accuracy of pathology related spine level localization using anatomical landmarks was only 40%. Pathology related ISPDs of more than 10 mm and palpable deformity was significantly correlated with successful determination of spine levels using anatomical landmarks. CONCLUSIONS This study showed that poor spine level localization using anatomical landmarks was associated with pathology related ISPDs of less than 10 mm. Conversely, patients with palpable spinal deformity have their levels easily localized.
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Affiliation(s)
- Jin W Tee
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada.,The Alfred Hospital, National Trauma Research Institute, Melbourne, VIC, Australia
| | - Joost Rutges
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada.,University Medical Center Utrecht, Utrecht, the Netherlands
| | - Travis Marion
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada
| | - John Street
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada
| | - Scott Paquette
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada
| | - Tamir Ailon
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada
| | - Brian K Kwon
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada
| | - Marcel Dvorak
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada
| | - Michael Boyd
- University of British Columbia, Vancouver, BC, Canada.,Vancouver General Hospital, Vancouver, BC, Canada
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27
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Nankali S, Torshabi AE, Miandoab PS. A Feasibility Study on Ribs as Anatomical Landmarks for Motion Tracking of Lung and Liver Tumors at External Beam Radiotherapy. Technol Cancer Res Treat 2016. [PMID: 26206767 DOI: 10.1177/1533034615595737] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
At external beam radiotherapy for some tumors located at thorax region due to lack of information in gray scale fluoroscopic images tumor position determination is problematic. One of the clinical strategies is to implant clip as internal fiducial marker inside or near tumor to represent tumor position while the contrast of implanted clip is highly observable rather than tumor. As alternative, using natural anatomical landmarks located at thorax region of patient body is proposed to extract tumor position information without implanting clips that is invasive method with possible side effect. Among natural landmarks, ribs of rib-cage structure that result proper visualization at X-ray images may be optimal as representative for tumor motion. In this study, we investigated the existence of possible correlation between ribs as natural anatomical landmarks and various lung and liver tumors located at different sites as challenging issue. A simulation study was performed using data extracted from 4-dimensional extended cardiac-torso anthropomorphic phantom that is able to simulate motion effect of dynamic organs, as well. Several tumor sites with predefined distances originated from chosen ribs at anterior-posterior direction were simulated at 3 upper, middle, and lower parts of chest. Correlation coefficient between ribs and tumors was calculated to investigate the robustness of ribs as anatomical landmarks for tumor motion tracking. Moreover, a consistent correlation model was taken into account to track tumor motion with a rib as best candidate among selected ribs. Final results represent availability of using rib cage as anatomical landmark to track lung and liver tumors in a noninvasive way. Observations of our calculations showed a proper correlation between tumors and ribs while the degree of this correlation is changing depends on tumor site while lung tumors are more varied and complex with less correlation with ribs motion against liver tumors.
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Affiliation(s)
- Saber Nankali
- 1 Medical Radiation Division, Department of Electrical and Computer Engineering, Graduate University of Advanced Technology, Kerman, Iran
| | - Ahmad Esmaili Torshabi
- 1 Medical Radiation Division, Department of Electrical and Computer Engineering, Graduate University of Advanced Technology, Kerman, Iran
| | - Payam Samadi Miandoab
- 1 Medical Radiation Division, Department of Electrical and Computer Engineering, Graduate University of Advanced Technology, Kerman, Iran
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28
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Lee JG, Jung SJ, Lee HJ, Seo JH, Choi YJ, Bae HS, Park JT, Kim HJ. Quantitative anatomical analysis of facial expression using a 3D motion capture system: Application to cosmetic surgery and facial recognition technology. Clin Anat 2015; 28:735-44. [PMID: 25872024 DOI: 10.1002/ca.22542] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 02/27/2015] [Accepted: 03/02/2015] [Indexed: 11/07/2022]
Abstract
The topography of the facial muscles differs between males and females and among individuals of the same gender. To explain the unique expressions that people can make, it is important to define the shapes of the muscle, their associations with the skin, and their relative functions. Three-dimensional (3D) motion-capture analysis, often used to study facial expression, was used in this study to identify characteristic skin movements in males and females when they made six representative basic expressions. The movements of 44 reflective markers (RMs) positioned on anatomical landmarks were measured. Their mean displacement was large in males [ranging from 14.31 mm (fear) to 41.15 mm (anger)], and 3.35-4.76 mm smaller in females [ranging from 9.55 mm (fear) to 37.80 mm (anger)]. The percentages of RMs involved in the ten highest mean maximum displacement values in making at least one expression were 47.6% in males and 61.9% in females. The movements of the RMs were larger in males than females but were more limited. Expanding our understanding of facial expression requires morphological studies of facial muscles and studies of related complex functionality. Conducting these together with quantitative analyses, as in the present study, will yield data valuable for medicine, dentistry, and engineering, for example, for surgical operations on facial regions, software for predicting changes in facial features and expressions after corrective surgery, and the development of face-mimicking robots.
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Affiliation(s)
- Jae-Gi Lee
- Department of Dental Hygiene, School of Health and Medicine, Namseoul University, Cheonan, South Korea
| | - Su-Jin Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Center, Yonsei University College of Dentistry, Seoul, South Korea
| | - Hyung-Jin Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Center, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jung-Hyuk Seo
- Department of Advanced General Dentistry, Yonsei University College of Dentistry, Seoul, South Korea
| | - You-Jin Choi
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Center, Yonsei University College of Dentistry, Seoul, South Korea
| | - Hyun-Sook Bae
- Department of Dental Hygiene, School of Health and Medicine, Namseoul University, Cheonan, South Korea
| | - Jong-Tae Park
- Department of Oral Anatomy, Dankook University College of Dentistry, Cheonan, South Korea
| | - Hee-Jin Kim
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Center, Yonsei University College of Dentistry, Seoul, South Korea
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29
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Hingwala D, Thomas B, Radhakrishnan A, Nair N S, Kesavadas C. Correlation between anatomic landmarks and fMRI in detection of the sensorimotor cortex in patients with structural lesions. Acta Radiol 2014; 55:107-13. [PMID: 23864066 DOI: 10.1177/0284185113492455] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Structural lesions in/near the sensorimotor cortex may cause distortion/obscuration of the anatomic landmarks. PURPOSE To compare the localization of the sensorimotor cortex using anatomical landmarks and fMRI in the clinical setting in patients with structural lesions in/near the central sulcus. MATERIAL AND METHODS We analyzed the anatomic and fMRI data of 68 consecutive patients (42 tumors, 15 gliotic lesions, 11 focal cortical dysplasias [FCD]) who underwent MRI to assess the relationship of these lesions to the sensorimotor cortex. Anatomical data was analyzed on conventional two- and three-dimensional sequences. BOLD fMRI was performed with block design hand/leg or lip movement paradigm and general linear model was used for detecting the activated cortex. fMRI was considered as a valid method for identifying the sensorimotor cortex based on previously reported literature. RESULTS The sensorimotor cortex could not be identified with anatomical landmarks in 9/68 (13.2%) patients. fMRI detected activation in areas different from that predicted by anatomical landmarks in 11/68 (16.2%) cases. This occurred in 5/42 (11.9%) tumors, 6/15 (40%) gliotic lesions, and 0/11 (0%) FCDs. The kappa value for concordance between fMRI and anatomic landmarks was 0.883 overall, 1.0 for tumors, 0.721 for gliotic lesions, and in none of the patients with focal cortical dysplasias. CONCLUSION In patients with lesions that obscure normal cerebral landmarks, fMRI supplies the information that is not available from the anatomic images. In patients with landmarks that can be recognized, the location of the rolandic cortex may be misjudged in some cases if functional imaging is not used. Anatomic landmarks may not correlate with the area of functional activation in gliotic lesions and tumors. Determining the risk of a postoperative neurologic defect from surgery is likely to be more reliable with functional imaging than with conventional anatomic imaging.
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Affiliation(s)
- Divyata Hingwala
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Bejoy Thomas
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Ashalatha Radhakrishnan
- Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - Suresh Nair N
- Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | - C Kesavadas
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India
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Omara AI, Wang M, Fan Y, Song Z. Anatomical landmarks for point-matching registration in image-guided neurosurgery. Int J Med Robot 2013; 10:55-64. [PMID: 23733606 DOI: 10.1002/rcs.1509] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2013] [Indexed: 11/05/2022]
Abstract
BACKGROUND Accurate patient to image registration is the core for successful image-guided neurosurgery. While skin adhesive markers (SMs) are widely used in point-matching registration, a proper implementation of anatomical landmarks (ALs) may overcome the inconvenience brought by the use of SMs. METHODS Using nine ALs, a set of three configurations of different combinations of them is proposed. These configurations are defined according to the required positioning of the patient's head during surgery and the resulting distribution of the expected target registration error (TRE). These configurations were first evaluated by simulation experiment using the data of 20 patients from two hospitals, and then testing the applicability of them in eight real clinical surgeries of neuronavigation. RESULTS The results of the simulation experiment showed that, by incorporating a fiducial registration error (FRE) of 3.5 mm measured in the clinical setting, the expected TRE in the whole skull was less than 2.5 mm, and the expected TRE in the whole brain was less than 1.75 mm when using all the nine ALs. A small TRE could also be achieved in the corresponding surgical field by using the other three configurations with less ALs. In the clinical experiment, the FLE ranges in the image and the patient space were 1.4-3.6 mm and 1.6-5.5 mm, respectively. The measured TRE and FRE were 3.1 ± 0.75 mm and 3.5 ± 0.17 mm, respectively. CONCLUSIONS The AL configurations proposed in this investigation provide sufficient registration accuracy and can help to avoid the disadvantages of SMs if used clinically.
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Affiliation(s)
- Akram I Omara
- Digital Medical Research Center of Shanghai Medical College, Fudan University, Shanghai, and Shanghai Key Laboratory of Medical Image Computing and Computer Assisted Intervention, Shanghai, China
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Frankó E, Insausti AM, Artacho-Pérula E, Insausti R, Chavoix C. Identification of the human medial temporal lobe regions on magnetic resonance images. Hum Brain Mapp 2012; 35:248-56. [PMID: 22936605 DOI: 10.1002/hbm.22170] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 06/06/2012] [Accepted: 07/11/2012] [Indexed: 02/04/2023] Open
Abstract
The medial temporal lobe (MTL) plays a key role in learning, memory, spatial navigation, emotion, and social behavior. The improvement of noninvasive neuroimaging techniques, especially magnetic resonance imaging, has increased the knowledge about this region and its involvement in cognitive functions and behavior in healthy subjects and in patients with various neuropsychiatric and neurodegenerative disorders. However, cytoarchitectonic boundaries are not visible on magnetic resonance images (MRI), which makes it difficult to identify precisely the different parts of the MTL (hippocampus, amygdala, temporopolar, perirhinal, entorhinal, and posterior parahippocampal cortices) with imaging techniques, and thus to determine their involvement in normal and pathological functions. Our aim in this study was to define neuroanatomical landmarks visible on MRI, which can facilitate the examination of this region. We examined the boundaries of the MTL regions in 50 post-mortem brains. In eight cases, we also obtained post-mortem MRI on which the MTL boundaries were compared with histological examination before applying them to 26 in vivo MRI of healthy adults. We then defined the most relevant neuroanatomical landmarks that set the rostro-caudal limits of the MTL structures, and we describe a protocol to identify each of these structures on coronal T1-weighted MRI. This will help the structural and functional imaging investigations of the MTL in various neuropsychiatric and neurodegenerative disorders affecting this region.
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Affiliation(s)
- Edit Frankó
- INSERM, U1075 COMETE, 14032 Caen, France; University of Caen, U1075 COMETE, 14032 Caen, France; CHU de Caen, Department of Functional Explorations, 14032 Caen, France
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