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  1. Article ; Online: Knee positioning systems for X-ray environment: a literature review.

    Lopes, Catarina / Vilaca, Adelio / Rocha, Cláudia / Mendes, Joaquim

    Physical and engineering sciences in medicine

    2023  Volume 46, Issue 1, Page(s) 45–55

    Abstract: The knee is one of the most stressed joints of the human body, being susceptible to ligament injuries and degenerative diseases. Due to the rising incidence of knee pathologies, the number of knee X-rays acquired is also increasing. Such X-rays are ... ...

    Abstract The knee is one of the most stressed joints of the human body, being susceptible to ligament injuries and degenerative diseases. Due to the rising incidence of knee pathologies, the number of knee X-rays acquired is also increasing. Such X-rays are obtained for the diagnosis of knee injuries, the evaluation of the knee before and after surgery, and the monitoring of the knee joint's stability. These types of diagnosis and monitoring of the knee usually involve radiography under physical stress. This widely used medical tool provides a more objective analysis of the measurement of the knee laxity than a physical examination does, involving knee stress tests, such as valgus, varus, and Lachman. Despite being an improvement to physical examination regarding the physician's bias, stress radiography is still performed manually in a lot of healthcare facilities. To avoid exposing the physician to radiation and to decrease the number of X-ray images rejected due to inadequate positioning of the patient or the presence of artefacts, positioning systems for stress radiography of the knee have been developed. This review analyses knee positioning systems for X-ray environment, concluding that they have improved the objectivity and reproducibility during stress radiographs, but have failed to either be radiolucent or versatile with a simple ergonomic set-up.
    MeSH term(s) Humans ; X-Rays ; Reproducibility of Results ; Knee Joint/diagnostic imaging ; Knee Joint/surgery ; Knee/diagnostic imaging ; Radiography
    Language English
    Publishing date 2023-01-24
    Publishing country Switzerland
    Document type Journal Article ; Review
    ISSN 2662-4737
    ISSN (online) 2662-4737
    DOI 10.1007/s13246-023-01221-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Physical properties of Scarpa's fascia.

    Valença-Filipe, Rita / Mendes, Joaquim / Pereira, Francisco / Vardasca, Ricardo / Amarante, José / Costa-Ferreira, António

    Clinical anatomy (New York, N.Y.)

    2023  Volume 37, Issue 4, Page(s) 397–404

    Abstract: Preservation of Scarpa's fascia has improved clinical outcomes in abdominoplasty procedures and in other body contour surgeries. However, the physical properties of Scarpa's fascia have not yet been described, and grafts are still underexplored. Fresh ... ...

    Abstract Preservation of Scarpa's fascia has improved clinical outcomes in abdominoplasty procedures and in other body contour surgeries. However, the physical properties of Scarpa's fascia have not yet been described, and grafts are still underexplored. Fresh surgical specimens from five female patients subjected to classical abdominoplasty were dissected and analyzed. A grid was drawn on the fascia surface, dividing it into equal upper and lower halves; four Scarpa's fascia samples (30 × 10 mm) were collected from each half, 40 mm apart. The thickness was measured with a caliper. A strain/stress universal testing machine was used for mechanical tests. Twenty-five samples were obtained (nine from the upper half, 16 from the lower). The average thickness was 0.56 ± 0.11 mm. The average values for stretch, stress, strain, and Young's Modulus were, respectively, 1.436, 4.198 MPa, 43.6%, and 23.14 MPa. The upper half showed significantly greater thickness and strain values (p = 0.020 and p = 0.048; Student's t-test). The physical and biomechanical properties of Scarpa's fascia can make it a donor area for fascial grafts as an alternative to fascia lata, as it is always available and has minimal donor-site morbidity. Further studies are needed to validate this statement. It seems advantageous to use the lower half of the abdomen instead of the upper part as a donor site.
    MeSH term(s) Humans ; Female ; Abdominal Wall/surgery ; Abdominoplasty/methods ; Adipose Tissue ; Fascia Lata ; Abdominal Cavity/surgery
    Language English
    Publishing date 2023-06-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1025505-9
    ISSN 1098-2353 ; 0897-3806
    ISSN (online) 1098-2353
    ISSN 0897-3806
    DOI 10.1002/ca.24087
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Use of Infrared Thermography for Abdominoplasty Procedures in Patients with Extensive Subcostal Scars: A Preliminary Analysis.

    Valença-Filipe, Rita / Vardasca, Ricardo / Magalhães, Carolina / Mendes, Joaquim / Amarante, José / Costa-Ferreira, António

    Plastic and reconstructive surgery. Global open

    2023  Volume 11, Issue 7, Page(s) e5149

    Abstract: Subcostal scars may increase the risk of healing complications in abdominoplasty. The authors evaluated the use of thermography as a potential tool for patient selection and surgery planning to avoid complications and improve abdominoplasty outcomes. Two ...

    Abstract Subcostal scars may increase the risk of healing complications in abdominoplasty. The authors evaluated the use of thermography as a potential tool for patient selection and surgery planning to avoid complications and improve abdominoplasty outcomes. Two candidates for abdominoplasty procedures who presented with extensive subcostal scars were submitted to an infrared thermography protocol at all phases of the procedure: preoperative, intraoperative, and postoperative at 1 and 6 months. The preoperative thermography for both patients revealed near-normal abdominal wall perfusion. The thermograms captured intraoperatively during flap elevation did not show perfusion deficits on the upper abdominal flap. At 1 month and 6 months postoperative, dynamic thermography for both patients showed normal to near-normal perfusion. The procedures had a complication-free course with a good aesthetic result. Plastic surgeons may be reluctant to perform a full abdominoplasty in patients with a previous subcostal incision. In this preliminary analysis, we raise the potential usefulness of thermography for patients with recent subcostal scars and/or important comorbidities as a strategy for adequate patient and technique selection, avoiding possible complications. Future studies, with an increased number of patients and adequate statistical analysis, may allow us to validate the utility of thermography in these cases and reassure that the presence of previous extensive subcostal scars may not be a contraindication for a full abdominoplasty, especially if they are not recent.
    Language English
    Publishing date 2023-07-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2851682-5
    ISSN 2169-7574 ; 2169-7574
    ISSN (online) 2169-7574
    ISSN 2169-7574
    DOI 10.1097/GOX.0000000000005149
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Classic Versus Scarpa-sparing abdominoplasty: An infrared thermographic comparative analysis.

    Valença-Filipe, Rita / Vardasca, Ricardo / Magalhães, Carolina / Mendes, Joaquim / Amarante, José / Costa-Ferreira, António

    Journal of plastic, reconstructive & aesthetic surgery : JPRAS

    2023  Volume 82, Page(s) 264–274

    Abstract: Background: Scarpa fascia preservation during abdominoplasty has been shown to have several clinical advantages. The mechanisms behind its efficiency have been the subject of several studies. Three theories have been proposed, relating to mechanical ... ...

    Abstract Background: Scarpa fascia preservation during abdominoplasty has been shown to have several clinical advantages. The mechanisms behind its efficiency have been the subject of several studies. Three theories have been proposed, relating to mechanical factors, lymphatic preservation, and improved vascularization. This study aimed to further investigate the possible vascular impact of Scarpa fascia preservation by using a thermographic analysis.
    Methods: A single-center prospective study was conducted, involving 12 female patients randomly and equally assigned to one of two surgical procedures: classic (Group A) and Scarpa-sparing abdominoplasty (Group B). Dynamic thermography was applied before and after surgery (one and six months), and two regions of interest (ROIs) were considered. The latter had the same location on every sample, and corresponded to areas where different surgical planes had been used. Static thermography was applied intraoperatively, and four ROIs were considered, located over Scarpa and over the deep fascia. The respective thermal data were analyzed.
    Results: The general characteristics of both groups were identical. Preoperative thermography demonstrated no differences between groups. Intraoperative higher thermal gradients between lateral and medial ROIs were observed in Group B (P = 0.037, right side). Dynamic thermography at one month demonstrated a trend for better thermal recovery and better thermal symmetry (P = 0.035, 1-min mark) in Group B. No other differences were found.
    Conclusion: Dynamic thermography presented a better response when Scarpa fascia was preserved: stronger, faster, and more symmetric. Based on these results, improved vascularization may have a role in explaining the clinical efficiency of a Scarpa-sparing abdominoplasty.
    MeSH term(s) Female ; Humans ; Abdominoplasty/methods ; Fascia ; Lymphatic Vessels ; Prospective Studies ; Thermography
    Language English
    Publishing date 2023-04-18
    Publishing country Netherlands
    Document type Journal Article ; Randomized Controlled Trial
    ZDB-ID 2217750-4
    ISSN 1878-0539 ; 1748-6815 ; 0007-1226
    ISSN (online) 1878-0539
    ISSN 1748-6815 ; 0007-1226
    DOI 10.1016/j.bjps.2023.04.023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Skin temperature response to thermal stimulus in patients with hyperhidrosis: A comparative study

    Carvalho, Fátima / Magalhaes, Carolina / Fernandez-Llimos, Fernando / Mendes, Joaquim / Gonçalves, Jorge

    Journal of thermal biology. 2022 Oct., v. 109

    2022  

    Abstract: Primary hyperhidrosis (HH), the excessive sweating exceeding physiological demand, has been associated to a complex dysfunction of the autonomic nervous system which may explain the disfunction in sweating but may also cause unrevealed alterations in ... ...

    Abstract Primary hyperhidrosis (HH), the excessive sweating exceeding physiological demand, has been associated to a complex dysfunction of the autonomic nervous system which may explain the disfunction in sweating but may also cause unrevealed alterations in skin blood flow regulation. In fact, HH patients present a sympathetic over-function with less reflex bradycardia in response to the Valsalva maneuver and higher sympathetic skin responses. We aimed to identify response patterns to room thermal stimulus in HH patients compared to a control group in order to investigate putative differences in blood flow assuming that skin temperature in glabrous (non-hairy) areas reflect the sympathetic tone in arteriovenous anastomoses (AVAs). Infrared thermography images were obtained from a cohort of patients diagnosed with HH, followed at a hospital pediatric surgical department and to a sex- and age-matched control group of patients admitted for other surgical procedures. With the participants in Fowler's position, a set of 3 images were captured simultaneously and 44 regions of interest were analyzed, distributed on the palms of the hands, soles of the feet, axilla, and inner canthus. After an acclimatization period at 20 °C, the room temperature was increased to 24, 28 and 32 °C to obtain similar sets of thermograms. A total of 37 patients with HH and 16 participants in the control group were included in the study. At baseline (20 °C), body core temperature (measured in the inner canthus) was significantly higher in the HH patients compared to the controls (p = 0.019 and p = 0.003 in right and left inner canthi, respectively), without any significant differences in the other thermograms. When room temperature was increased, differences in core temperature disappeared, while differences appeared in axilla and palms of the hands with HH patients presenting significantly lower temperature at the three thermal stimulus stages. Patients with HH presented a lower thermoregulatory response when submitted to room temperature increase, which may reflect a vasomotor sympathetic over-function in AVAs.
    Keywords acclimation ; ambient temperature ; autonomic nervous system ; blood flow ; comparative study ; hospitals ; skin temperature ; thermography
    Language English
    Dates of publication 2022-10
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1498364-3
    ISSN 1879-0992 ; 0306-4565
    ISSN (online) 1879-0992
    ISSN 0306-4565
    DOI 10.1016/j.jtherbio.2022.103322
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Skin temperature response to thermal stimulus in patients with hyperhidrosis: A comparative study.

    Carvalho, Fátima / Magalhaes, Carolina / Fernandez-Llimos, Fernando / Mendes, Joaquim / Gonçalves, Jorge

    Journal of thermal biology

    2022  Volume 109, Page(s) 103322

    Abstract: Primary hyperhidrosis (HH), the excessive sweating exceeding physiological demand, has been associated to a complex dysfunction of the autonomic nervous system which may explain the disfunction in sweating but may also cause unrevealed alterations in ... ...

    Abstract Primary hyperhidrosis (HH), the excessive sweating exceeding physiological demand, has been associated to a complex dysfunction of the autonomic nervous system which may explain the disfunction in sweating but may also cause unrevealed alterations in skin blood flow regulation. In fact, HH patients present a sympathetic over-function with less reflex bradycardia in response to the Valsalva maneuver and higher sympathetic skin responses. We aimed to identify response patterns to room thermal stimulus in HH patients compared to a control group in order to investigate putative differences in blood flow assuming that skin temperature in glabrous (non-hairy) areas reflect the sympathetic tone in arteriovenous anastomoses (AVAs). Infrared thermography images were obtained from a cohort of patients diagnosed with HH, followed at a hospital pediatric surgical department and to a sex- and age-matched control group of patients admitted for other surgical procedures. With the participants in Fowler's position, a set of 3 images were captured simultaneously and 44 regions of interest were analyzed, distributed on the palms of the hands, soles of the feet, axilla, and inner canthus. After an acclimatization period at 20 °C, the room temperature was increased to 24, 28 and 32 °C to obtain similar sets of thermograms. A total of 37 patients with HH and 16 participants in the control group were included in the study. At baseline (20 °C), body core temperature (measured in the inner canthus) was significantly higher in the HH patients compared to the controls (p = 0.019 and p = 0.003 in right and left inner canthi, respectively), without any significant differences in the other thermograms. When room temperature was increased, differences in core temperature disappeared, while differences appeared in axilla and palms of the hands with HH patients presenting significantly lower temperature at the three thermal stimulus stages. Patients with HH presented a lower thermoregulatory response when submitted to room temperature increase, which may reflect a vasomotor sympathetic over-function in AVAs.
    MeSH term(s) Body Temperature Regulation/physiology ; Child ; Humans ; Hyperhidrosis/diagnosis ; Hyperhidrosis/surgery ; Skin/blood supply ; Skin Temperature ; Sweating ; Temperature
    Language English
    Publishing date 2022-09-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1498364-3
    ISSN 1879-0992 ; 0306-4565
    ISSN (online) 1879-0992
    ISSN 0306-4565
    DOI 10.1016/j.jtherbio.2022.103322
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Oral rehabilitation of a saxophone player with orofacial pain: a case report.

    Clemente, Miguel Pais / Mendes, Joaquim / Bernardes, Gilberto / Van Twillert, Henk / Ferreira, Afonso Pinhão / Amarante, José Manuel

    The Journal of international medical research

    2023  Volume 51, Issue 6, Page(s) 3000605231161285

    Abstract: This paper presents a clinical case study investigating the pattern of a saxophonist's embouchure as a possible origin of orofacial pain. The rehabilitation addressed the dental occlusion and a fracture in a metal ceramic bridge. To evaluate the ... ...

    Abstract This paper presents a clinical case study investigating the pattern of a saxophonist's embouchure as a possible origin of orofacial pain. The rehabilitation addressed the dental occlusion and a fracture in a metal ceramic bridge. To evaluate the undesirable loads on the upper teeth, two piezoresistive sensors were placed between the central incisors and the mouthpiece during the embouchure. A newly fixed metal ceramic prosthesis was placed from teeth 13 to 25, and two implants were placed in the premolar zone corresponding to teeth 14 and 15. After the oral rehabilitation, the embouchure force measurements showed that higher stability was promoted by the newly fixed metal-ceramic prosthesis. The musician executed a more symmetric loading of the central incisors (teeth 11 and 21). The functional demands of the saxophone player and consequent application of excessive pressure can significantly influence and modify the metal-ceramic position on the anterior zone teeth 21/22. The contribution of engineering (i.e., monitoring the applied forces on the musician's dental structures) was therefore crucial for the correct assessment and design of the treatment plan.
    MeSH term(s) Humans ; Jaw ; Physical Therapy Modalities ; Facial Pain
    Language English
    Publishing date 2023-06-05
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 184023-x
    ISSN 1473-2300 ; 0300-0605 ; 0142-2596
    ISSN (online) 1473-2300
    ISSN 0300-0605 ; 0142-2596
    DOI 10.1177/03000605231161285
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: The role of AI classifiers in skin cancer images.

    Magalhaes, Carolina / Mendes, Joaquim / Vardasca, Ricardo

    Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)

    2019  Volume 25, Issue 5, Page(s) 750–757

    Abstract: Background: The use of different imaging modalities to assist in skin cancer diagnosis is a common practice in clinical scenarios. Different features representative of the lesion under evaluation can be retrieved from image analysis and processing. ... ...

    Abstract Background: The use of different imaging modalities to assist in skin cancer diagnosis is a common practice in clinical scenarios. Different features representative of the lesion under evaluation can be retrieved from image analysis and processing. However, the integration and understanding of these additional parameters can be a challenging task for physicians, so artificial intelligence (AI) methods can be implemented to assist in this process. This bibliographic research was performed with the goal of assessing the current applications of AI algorithms as an assistive tool in skin cancer diagnosis, based on information retrieved from different imaging modalities.
    Materials and methods: The bibliography databases ISI Web of Science, PubMed and Scopus were used for the literature search, with the combination of keywords: skin cancer, skin neoplasm, imaging and classification methods.
    Results: The search resulted in 526 publications, which underwent a screening process, considering the established eligibility criteria. After screening, only 65 were qualified for revision.
    Conclusion: Different imaging modalities have already been coupled with AI methods, particularly dermoscopy for melanoma recognition. Learners based on support vector machines seem to be the preferred option. Future work should focus on image analysis, processing stages and image fusion assuring the best possible classification outcome.
    MeSH term(s) Algorithms ; Artificial Intelligence ; Dermoscopy/methods ; Forecasting ; Humans ; Microscopy/methods ; Photography/methods ; Skin Neoplasms/diagnosis ; Spectrum Analysis/methods
    Language English
    Publishing date 2019-05-20
    Publishing country England
    Document type Journal Article ; Systematic Review
    ZDB-ID 1229160-2
    ISSN 1600-0846 ; 0909-752X ; 1397-1344
    ISSN (online) 1600-0846
    ISSN 0909-752X ; 1397-1344
    DOI 10.1111/srt.12713
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The Challenge of Dental Education After COVID-19 Pandemic - Present and Future Innovation Study Design.

    Clemente, Miguel Pais / Moreira, André / Pinto, João Correia / Amarante, José Manuel / Mendes, Joaquim

    Inquiry : a journal of medical care organization, provision and financing

    2021  Volume 58, Page(s) 469580211018293

    Abstract: The present work suggests research and innovation on the topic of dental education after the COVID-19 pandemic, is highly justified and could lead to a step change in dental practice. The challenge for the future in dentistry education should be revised ... ...

    Abstract The present work suggests research and innovation on the topic of dental education after the COVID-19 pandemic, is highly justified and could lead to a step change in dental practice. The challenge for the future in dentistry education should be revised with the COVID-19 and the possibility for future pandemics, since in most countries dental students stopped attending the dental faculties as there was a general lockdown of the population. The dental teaching has an important curriculum in the clinic where patients attend general dentistry practice. However, with SARS-CoV-2 virus, people may be reluctant having a dental treatment were airborne transmission can occur in some dental procedures. In preclinical dental education, the acquisition of clinical, technical skills, and the transfer of these skills to the clinic are extremely important. Therefore, dental education has to adapt the curriculum to embrace new technology devices, instrumentations systems, haptic systems, simulation based training, 3D printer machines, to permit validation and calibration of the technical skills of dental students.
    MeSH term(s) COVID-19/epidemiology ; Curriculum/trends ; Dentistry/trends ; Economics, Dental/trends ; Education, Dental/trends ; Education, Distance/trends ; Humans ; Practice Patterns, Dentists'/trends
    Language English
    Publishing date 2021-06-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 42153-4
    ISSN 1945-7243 ; 0046-9580
    ISSN (online) 1945-7243
    ISSN 0046-9580
    DOI 10.1177/00469580211018293
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Role of thermography in the assessment of temporomandibular disorders and other musculoskeletal conditions: A systematic review.

    Moreira, Andre / Batista, Ricardo / Oliveira, Susana / Branco, Catarina Aguiar / Mendes, Joaquim / Figueiral, Maria Helena

    Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine

    2021  Volume 235, Issue 10, Page(s) 1099–1112

    Abstract: The aim of this review was to evaluate whether thermal imaging may constitute a reliable assessment method of musculoskeletal and temporomandibular disorders (TMD/MSD). A systematic review was conducted in the Pubmed, Scopus, Cochrane library, Web of ... ...

    Abstract The aim of this review was to evaluate whether thermal imaging may constitute a reliable assessment method of musculoskeletal and temporomandibular disorders (TMD/MSD). A systematic review was conducted in the Pubmed, Scopus, Cochrane library, Web of Science, and Lilacs databases. The search terms were "musculoskeletal disorders,""temporomandibular disorders,""infrared thermography,""thermography," and "infrared imaging." The inclusion criteria were: studies published between January 1985 and January 2021, performed in humans, with sample size equal or greater than 20 patients, written in English, Portuguese, French and/or Spanish, and full text available. The exclusion criteria were: systematic reviews, case studies, and/or studies focused on pathologies beyond the review's domain. The risk of bias was evaluated using CASP 2018. A total of 2032 articles were retrieved. Of these, 25 studies met the inclusion criteria and were included to withdraw the following information: title, type of study, first author and year of publication, objective, number of participants, comparisons, and principal conclusions. No RCT were found. Despite some disparity, points of convergence among the majority of authors could be found. In general, healthy individuals show subtle thermal differences between contralateral homolog areas. Concerning orofacial structures, unilateral symptomatic individuals may show thermal differences equal or greater than 0.4°C. Infrared thermography accuracy in diagnosing TMD/MSD is still considered low to moderate. Despite some limitations, IRT might constitute a valuable supporting diagnostic tool in the medical field of TMD and MSD.
    MeSH term(s) Humans ; Temporomandibular Joint Disorders/diagnosis ; Thermography
    Language English
    Publishing date 2021-06-03
    Publishing country England
    Document type Journal Article ; Systematic Review
    ZDB-ID 1065942-0
    ISSN 2041-3033 ; 0046-2039 ; 0954-4119
    ISSN (online) 2041-3033
    ISSN 0046-2039 ; 0954-4119
    DOI 10.1177/09544119211023616
    Database MEDical Literature Analysis and Retrieval System OnLINE

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