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Ivanov I, Ranchev S, Stoychev S. Experimental Ultrasound Approach for Studying Knee Intra-Articular Femur-Tibia Movements under Different Loads. J Funct Morphol Kinesiol 2023; 9:8. [PMID: 38249085 PMCID: PMC10801608 DOI: 10.3390/jfmk9010008] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/11/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024] Open
Abstract
The purpose of the present study was to develop an experimental model for the study of intra-articular knee movements depending on the function of the knee joint and involved muscle groups under isometric stretching conditions with different loads. The experimental procedure included an ultrasound examination of a knee joint after isometric stretching in healthy men (n = 32). The changes (in millimeters) in the distances between the femur and tibia were measured using an ultrasound sonographer at three stages. The first stage was performed on ten (n = 10) healthy men in five different sitting and upright positions. In the second and third experimental model stages, lower limbs loading was applied to 22 participants. Our hypothesis, which was confirmed, was that as a result of increased loads on the participant's back, an intra-articular decrease in the femur-tibia cartilage surface distance would be observed. The accuracy of the created experimental model was improved over its three stages from 30% to 9%. Quantitative model data can help to create a mathematical model of the mechanical effects during the deformation of knee joint bone cartilage and it can also help outline some future tasks: increasing loading weights, enlarging participant groups, performing comparisons of men and women, and performing comparisons of healthy and pathological individuals.
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Affiliation(s)
- Ivan Ivanov
- National Sports Academy “Vassil Levski”, 1700 Sofia, Bulgaria
- Institute of Mechanics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (S.R.); (S.S.)
| | - Sergey Ranchev
- Institute of Mechanics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (S.R.); (S.S.)
| | - Stoyan Stoychev
- Institute of Mechanics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (S.R.); (S.S.)
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Fukumoto Y, Taniguchi M, Hirono T, Yagi M, Yamagata M, Nakai R, Yamada Y, Kimura M, Ichihashi N. Association of Regional Muscle Thickness and Echo Intensity with Muscle Volume, Intramuscular Adipose Tissue, and Strength of the Quadriceps Femoris. Clin Interv Aging 2023; 18:1513-1521. [PMID: 37724172 PMCID: PMC10505373 DOI: 10.2147/cia.s424504] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 09/05/2023] [Indexed: 09/20/2023] Open
Abstract
Purpose This study aimed to investigate the association of muscle thickness (MT) and echo intensity (EI) obtained at different regions along the muscle length with muscle volume (MV), intramuscular adipose tissue (IntraMAT), and muscle strength of the quadriceps femoris (QF). Patients and Methods A total of 135 community-dwelling adults (64 men and 71 women) participated in the study. Ultrasound scanning of the rectus femoris (RF) and vastus intermedius (VI) was performed at three locations (from mid- to distal thigh). The MT of the RF and VI and EI of the RF were measured. MRI-derived MV, IntraMAT, and muscle strength of the QF were measured. Results The correlation between RF-MT and RF-MV weakened as scanning approached the distal thigh, and the difference between the coefficients for the scanning locations was significant for women. However, the correlation of VI-MT with VI-MV and that of the combined MT of RF and VI with the MV of the whole QF and muscle strength were comparable among the scanning locations for both sexes. The correlation of RF-EI with the IntraMAT of the RF and the whole QF and muscle strength was also comparable among the scanning locations for both sexes. Conclusion The results of this study suggest that ultrasound measurements at the distal thigh can predict MV, IntraMAT, and muscle strength of the QF to the same degree as those at the mid-thigh.
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Affiliation(s)
- Yoshihiro Fukumoto
- Faculty of Rehabilitation, Kansai Medical University, Hirakata, Japan
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masashi Taniguchi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tetsuya Hirono
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masahide Yagi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Momoko Yamagata
- Faculty of Rehabilitation, Kansai Medical University, Hirakata, Japan
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryusuke Nakai
- Kyoto University Institute for the Future of Human Society, Kyoto, Japan
| | - Yosuke Yamada
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health, and Nutrition, Tokyo, Japan
| | - Misaka Kimura
- Institute for Active Health, Kyoto University of Advanced Science, Kameoka, Japan
| | - Noriaki Ichihashi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Hong ST. Review of Recent Prevalence of Urogenital Schistosomiasis in Sub-Saharan Africa and Diagnostic Challenges in the Field Setting. Life (Basel) 2023; 13:1670. [PMID: 37629527 PMCID: PMC10456001 DOI: 10.3390/life13081670] [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: 06/06/2023] [Revised: 07/18/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
Human schistosomiasis is one of neglected tropical diseases that remain highly prevalent in sub-Saharan Africa (SSA). Human schistosomiasis is mainly caused by two species, Schistosoma haematobium and S. mansoni, leading to urogenital and intestinal schistosomiasis, respectively. The World Health Organization (WHO) recommends mass drug administration (MDA) with praziquantel as the primary method of global intervention. Currently, MDA with praziquantel covers over half of the target population in endemic SSA countries. However, an accurate diagnosis is crucial for monitoring and evaluating the effectiveness of MDA. The standard diagnosis of both urogenital and intestinal schistosomiasis relies on the microscopic identification of eggs. However, the diagnostic sensitivity of this approach is low, especially for light or ultra-light infections. This is because Schistosoma eggs are laid inside of the venous plexus of the urinary bladder or mesenteric vein, where the adult flukes live. Approximately half of the eggs circulate in the blood vessels or are packed in neighboring tissues, while the remaining half are expelled into the lumen of the urinary bladder or intestine intermittently when the blood vessels are ruptured. In the field setting, the accuracy of any diagnostic method is critical for proper management of the intervention. The present article reviews the recent prevalence of urogenital schistosomiasis in SSA and highlights the practical limitations of diagnostic methods such as urine microscopy, urine reagent strips, molecular diagnosis, and ultrasound scanning in the field setting. Despite continuous global efforts to eliminate schistosomiasis over the past 20 years, many areas still remain endemic in SSA. No single diagnostic approach achieves acceptable sensitivity and specificity in the field setting. Therefore, any field survey should employ a combination of these methods based on the purpose of the study to accurately monitor and evaluate urogenital schistosomiasis. Based on diagnostic values and a cost-benefit analysis, a urine reagent strip test can replace urine microscopy in the field setting. The WHO criteria by ultrasound diagnosis should be updated including the echogenic snow sign and contour distortion.
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Affiliation(s)
- Sung-Tae Hong
- Graduate School of International Development, Handong Global University, Pohang 37554, Republic of Korea;
- Department of Tropical Medicine and Parasitology, Institute of Endemic Diseases Medical Research Center, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
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Aarvold A, Perry DC, Mavrotas J, Theologis T, Katchburian M. The management of developmental dysplasia of the hip in children aged under three months : a consensus study from the British Society for Children's Orthopaedic Surgery. Bone Joint J 2023; 105-B:209-214. [PMID: 36722054 PMCID: PMC9869707 DOI: 10.1302/0301-620x.105b2.bjj-2022-0893.r1] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
AIMS A national screening programme has existed in the UK for the diagnosis of developmental dysplasia of the hip (DDH) since 1969. However, every aspect of screening and treatment remains controversial. Screening programmes throughout the world vary enormously, and in the UK there is significant variation in screening practice and treatment pathways. We report the results of an attempt by the British Society for Children's Orthopaedic Surgery (BSCOS) to identify a nationwide consensus for the management of DDH in order to unify treatment and suggest an approach for screening. METHODS A Delphi consensus study was performed among the membership of BSCOS. Statements were generated by a steering group regarding aspects of the management of DDH in children aged under three months, namely screening and surveillance (15 questions), the technique of ultrasound scanning (eight questions), the initiation of treatment (19 questions), care during treatment with a splint (ten questions), and on quality, governance, and research (eight questions). A two-round Delphi process was used and a consensus document was produced at the final meeting of the steering group. RESULTS A total of 60 statements were graded by 128 clinicians in the first round and 132 in the second round. Consensus was reached on 30 out of 60 statements in the first round and an additional 12 in the seond. This was summarized in a consensus statement and distilled into a flowchart to guide clinical practice. CONCLUSION We identified agreement in an area of medicine that has a long history of controversy and varied practice. None of the areas of consensus are based on high-quality evidence. This document is thus a framework to guide clinical practice and on which high-quality clinical trials can be developed.Cite this article: Bone Joint J 2023;105-B(2):209-214.
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Affiliation(s)
- Alexander Aarvold
- Southampton Children’s Hospital, Southampton, UK,University of Southampton, Southampton, UK,Correspondence should be sent to Alexander Aarvold. E-mail:
| | - Daniel C. Perry
- NDORMS, University of Oxford, Oxford, UK,Institute Population Health, University of Liverpool, Liverpool, UK,Alder Hey Children’s Hospital, Liverpool, UK
| | - Jason Mavrotas
- St Helens and Knowsley Teaching Hospitals NHS Foundation Trust, Liverpool, UK
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Nicholson JA, Oliver WM, MacGillivray TJ, Robinson CM, Simpson AHRW. 3D ultrasound reconstruction of sonographic callus : a novel imaging modality for early evaluation of fracture healing. Bone Joint Res 2021; 10:759-766. [PMID: 34851197 PMCID: PMC8696520 DOI: 10.1302/2046-3758.1012.bjr-2021-0250] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
AIMS The aim of this study was to establish a reliable method for producing 3D reconstruction of sonographic callus. METHODS A cohort of ten closed tibial shaft fractures managed with intramedullary nailing underwent ultrasound scanning at two, six, and 12 weeks post-surgery. Ultrasound capture was performed using infrared tracking technology to map each image to a 3D lattice. Using echo intensity, semi-automated mapping was performed to produce an anatomical 3D representation of the fracture site. Two reviewers independently performed 3D reconstructions and kappa coefficient was used to determine agreement. A further validation study was undertaken with ten reviewers to estimate the clinical application of this imaging technique using the intraclass correlation coefficient (ICC). RESULTS Nine of the ten patients achieved union at six months. At six weeks, seven patients had bridging callus of ≥ one cortex on the 3D reconstruction and when present all achieved union. Compared to six-week radiographs, no bridging callus was present in any patient. Of the three patients lacking sonographic bridging callus, one went onto a nonunion (77.8% sensitive and 100% specific to predict union). At 12 weeks, nine patients had bridging callus at ≥ one cortex on 3D reconstruction (100%-sensitive and 100%-specific to predict union). Presence of sonographic bridging callus on 3D reconstruction demonstrated excellent reviewer agreement on ICC at 0.87 (95% confidence interval 0.74 to 0.96). CONCLUSION 3D fracture reconstruction can be created using multiple ultrasound images in order to evaluate the presence of bridging callus. This imaging modality has the potential to enhance the usability and accuracy of identification of early fracture healing. Cite this article: Bone Joint Res 2021;10(12):759-766.
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Affiliation(s)
- Jamie A Nicholson
- Department of Orthopaedic Surgery, University of Edinburgh, Edinburgh, UK
| | - William M Oliver
- Department of Orthopaedic Surgery, University of Edinburgh, Edinburgh, UK
| | - Tom J MacGillivray
- Clinical Research Imaging Centre, University of Edinburgh, Edinburgh, UK
| | - C Michael Robinson
- Department of Orthopaedic Surgery, University of Edinburgh, Edinburgh, UK
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Kim YJ, Choi J, Moon J, Sung KR, Choi J. A Sarcopenia Detection System Using an RGB-D Camera and an Ultrasound Probe: Eye-in-Hand Approach. Biosensors (Basel) 2021; 11:243. [PMID: 34356714 PMCID: PMC8301760 DOI: 10.3390/bios11070243] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/11/2021] [Accepted: 07/14/2021] [Indexed: 12/28/2022]
Abstract
Skeletal muscle mass deficiency and quality degradation constitute sarcopenia for elderly people. Sarcopenia can result in musculoskeletal damage and accompany various metabolic problems, which make early sarcopenia diagnosis important. Various modalities, such as computed tomography (CT) and magnetic resonance imaging (MRI), have been developed for screening sarcopenia. Recently, ultrasound scanning was suggested for screening sarcopenia because of its safety, usability, and cost effectiveness. However, there has been no standardized assessment methodology for screening sarcopenia with ultrasound scanning. Therefore, prior to this study, we developed a four-degrees-of-freedom (DOF) sarcopenia detection system using an RGB-D camera and an ultrasound probe to automatically scan the human thigh without operator dependency. However, due to the eye-to-hand approach with the RGB-D camera, the system has limited usability for clinical trials. Therefore, in this study we modified the system such that it became eye-in-hand by attaching the RGB-D camera to the upper part of the system with an enhanced arc fitting algorithm. The modified system and enhanced algorithm were verified by an in-vitro test with bean curd-gelatin phantom. The results showed that the thickness of bean curd in the gelatin phantom was maintained at approximately 12.7 ± 0.35 mm over the 71.5∘ scanning range with 2.49 ± 0.15 N radial force at various thickness measuring points.
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Affiliation(s)
- Yeoun-Jae Kim
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88, Olympic-Ro 43-Gil, Songpa-Gu, Seoul 05505, Korea;
| | - Jueun Choi
- Department of Biomedical Engineering, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.C.); (J.M.)
| | - Jungwoo Moon
- Department of Biomedical Engineering, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.C.); (J.M.)
| | - Kyung Rim Sung
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Jaesoon Choi
- Department of Biomedical Engineering, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.C.); (J.M.)
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Akbari M, Carriere J, Meyer T, Sloboda R, Husain S, Usmani N, Tavakoli M. Robotic Ultrasound Scanning With Real-Time Image-Based Force Adjustment: Quick Response for Enabling Physical Distancing During the COVID-19 Pandemic. Front Robot AI 2021; 8:645424. [PMID: 33829043 PMCID: PMC8019797 DOI: 10.3389/frobt.2021.645424] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 12/23/2020] [Accepted: 02/25/2021] [Indexed: 12/13/2022] Open
Abstract
During an ultrasound (US) scan, the sonographer is in close contact with the patient, which puts them at risk of COVID-19 transmission. In this paper, we propose a robot-assisted system that automatically scans tissue, increasing sonographer/patient distance and decreasing contact duration between them. This method is developed as a quick response to the COVID-19 pandemic. It considers the preferences of the sonographers in terms of how US scanning is done and can be trained quickly for different applications. Our proposed system automatically scans the tissue using a dexterous robot arm that holds US probe. The system assesses the quality of the acquired US images in real-time. This US image feedback will be used to automatically adjust the US probe contact force based on the quality of the image frame. The quality assessment algorithm is based on three US image features: correlation, compression and noise characteristics. These US image features are input to the SVM classifier, and the robot arm will adjust the US scanning force based on the SVM output. The proposed system enables the sonographer to maintain a distance from the patient because the sonographer does not have to be holding the probe and pressing against the patient's body for any prolonged time. The SVM was trained using bovine and porcine biological tissue, the system was then tested experimentally on plastisol phantom tissue. The result of the experiments shows us that our proposed quality assessment algorithm successfully maintains US image quality and is fast enough for use in a robotic control loop.
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Affiliation(s)
- Mojtaba Akbari
- Telerobotic and Biorobotic System Group, Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada
| | - Jay Carriere
- Telerobotic and Biorobotic System Group, Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada
| | - Tyler Meyer
- Division of Radiation Oncology, Tom Baker Cancer Centre, Calgary, AB, Canada
| | - Ron Sloboda
- Department of Oncology, Cross Cancer Institute, Edmonton, AB, Canada
| | - Siraj Husain
- Division of Radiation Oncology, Tom Baker Cancer Centre, Calgary, AB, Canada
| | - Nawaid Usmani
- Department of Oncology, Cross Cancer Institute, Edmonton, AB, Canada
| | - Mahdi Tavakoli
- Telerobotic and Biorobotic System Group, Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada
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Kim YJ, Kim S, Choi J. Sarcopenia Detection System Using RGB-D Camera and Ultrasound Probe: System Development and Preclinical In-Vitro Test. Sensors (Basel) 2020; 20:E4447. [PMID: 32784914 DOI: 10.3390/s20164447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/05/2020] [Accepted: 08/05/2020] [Indexed: 12/17/2022]
Abstract
Sarcopenia is defined as muscle mass and strength loss with aging. As places, such as South Korea, Japan, and Europe have entered an aged society, sarcopenia is attracting global attention with elderly health. However, only few developed devices can quantify sarcopenia diagnosis modalities. Thus, the authors developed a sarcopenia detection system with 4 degrees of freedom to scan the human thigh with ultrasound probe and determine whether he/she has sarcopenia by inspecting the length of muscle thickness in the thigh by ultrasound image. To accurately measure the muscle thickness, the ultrasound probe attached to the sarcopenia detection system, must be moved angularly along the convex surface of the thigh with predefined pressure maintained. Therefore, the authors proposed an angular thigh scanning method for the aforementioned reason. The method first curve-fits the angular surface of the subject’s thigh with piecewise arcs using D information from a fixed RGB-D camera. Then, it incorporates a Jacobian-based ultrasound probe moving method to move the ultrasound probe along the curve-fitted arc and maintains radial interface force between the probe and the surface by force feedback control. The proposed method was validated by in-vitro test with a human thigh mimicked ham-gelatin phantom. The result showed the ham tissue thickness was maintained within approximately 26.01 ± 1.0 mm during 82° scanning with a 2.5 N radial force setting and the radial force between probe and surface of the phantom was maintained within 2.50 ± 0.1 N.
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Bellussi F, Salsi G, Simonazzi G, Youssef A, Cataneo I, Cariello L, Ghi T, Pilu G. A simple sonographic finding is associated with a successful vacuum application: the fetal occiput or forehead sign. Am J Obstet Gynecol MFM 2019; 1:148-155. [PMID: 33345820 DOI: 10.1016/j.ajogmf.2019.05.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/23/2019] [Accepted: 05/03/2019] [Indexed: 11/16/2022]
Abstract
BACKGROUND Intrapartum ultrasound scanning has been proposed as an ancillary tool in the decision-making process of instrumental vaginal delivery. OBJECTIVE The purpose of this study was to evaluate the correlation between the sonographic visualization with a transperineal scan of the fetal occiput or forehead distal to the pubic symphysis with anterior or posterior presentation, respectively (fetal occiput or forehead sign), and the outcome of a vacuum delivery. STUDY DESIGN We conducted a retrospective cohort study of patients who underwent a vacuum application in our hospital from 2011-2017, excluding outlet applications. In each case, a preliminary transperineal scan was performed to confirm fetal presentation and position and to demonstrate the presence or absence of the fetal occiput or forehead sign. The head direction, angle of progression, and the head perineum distance were also noted. The primary outcome measure was the success of the vacuum. The secondary outcome measures included fetal complications and perineal lacerations. RESULTS A total of 196 consecutive patients were enrolled in the study. The occiput or forehead sign was present in 150 and was associated with a successful vaginal extraction in all cases. Of the 46 cases without the sign, 5 babies (10.8%) were delivered by cesarean section after a failed vacuum (P=.0006). The occiput or forehead sign was also associated with fewer grade 3-4 perineal lacerations (10.7% vs 35.7%; P=.0005) and cephalohematomas, although the difference was not statistically significant (1.4% vs 4.3%). There was a good correlation between the occiput or forehead sign and the other sonographic methods that previously had been proposed to predict a successful vacuum extraction, such as head direction, angle of progression, and head perineum distance. CONCLUSION In our hands, the fetal occiput or forehead sign was associated strongly with successful vacuum application and with a very low rate of maternal and fetal complications.
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Affiliation(s)
- Federica Bellussi
- Obstetric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.
| | - Ginevra Salsi
- Obstetric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giuliana Simonazzi
- Obstetric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Aly Youssef
- Obstetric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Ilaria Cataneo
- Obstetric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Luisa Cariello
- Obstetric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Tullio Ghi
- Department of Obstetrics and Gynecology of the University of Parma, Ospedale Maggiore, Italy
| | - Gianluigi Pilu
- Obstetric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Tannouz VGS, Mamprim MJ, Lopes MD, Santos-Sousa CA, Souza Junior P, Babinski MA, Abidu-Figueiredo M. Is the right testis more affected by cryptorchidism than the left testis? An ultrasonographic approach in dogs of different sizes and breeds. Folia Morphol (Warsz) 2019; 78:847-852. [PMID: 30835343 DOI: 10.5603/fm.a2019.0022] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/09/2019] [Accepted: 02/09/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND Considered the most common congenital testicular abnormality of companion animals and a predisposition factor to the development of testicular neoplasia, cryptorchidism is defined as the non-descent of one or both testes to their normal anatomical location. Data on the occurrence of cryptorchidism in Brazil are scarce. The purpose of this work was to verify the occurrence of cryptorchidism in dogs of different sizes and breeds. MATERIALS AND METHODS Cryptorchidism identification was carried out by ultrasound scanning, from November, 1994 to March, 2007, at the Centre for Veterinarian Diagnosis and Support (Centro de Apoio e Diagnóstico Veterinário - CAD), in Rio de Janeiro. 4924 male dogs of different breeds were examined, revealing 403 (8.2%) cryptorchidism. RESULTS In this study, occurrence took place more often on the right testicle (59.5%), more frequently displaying inguinal localisation (59.5%) and unilateral occurrence (70%). Regarding bilateral presentation, the symmetrical form was the most common (86.8%). Cryptorchidism was more common in the inguinal region of dog of small sized breeds and in the abdominal region in dogs of medium- and large-sized breeds. CONCLUSIONS Ultrasound scan proved a valuable diagnosis tool for cryptorchid testes, giving precise localisation and parenchymal changes thus leading to a safe clinical treatment.
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Affiliation(s)
- V G S Tannouz
- Autonomous Veterinarian, Centre for Veterinarian Diagnosis and Support (Centro de Apoio e Diagnóstico Veterinário - CAD), Rio de Janeiro, Brazil
| | - M J Mamprim
- Veterinarian Radiology and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, UNESP, Botucatu, São Paulo, Brazil
| | - M D Lopes
- Veterinarian Radiology and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, UNESP, Botucatu, São Paulo, Brazil
| | | | | | - M A Babinski
- Morphology Department, Fluminense Federal University, Rio de Janeiro, Brazil
| | - M Abidu-Figueiredo
- Human and Animal Anatomy Department, Rural Federal University of Rio de Janeiro, Brazil.
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Lin SL, Lin CT, Huang WT, Jou YC, Tzai TS, Tsai YS. History of Urinary Retention Is a Risk Factor for Infection after Prostate Biopsy: A Nationwide, Population-Based Cohort Study. Surg Infect (Larchmt) 2018; 20:202-207. [PMID: 30589620 DOI: 10.1089/sur.2018.174] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND AND AIM Infection or bleeding after transrectal prostate biopsy remains a concern of both patients and urologists. We explored the risk of association of certain co-morbidities with both complications. PATIENTS AND METHODS Using the Taiwan National Health Insurance Research Database, we identified patients undergoing prostate biopsy from 2000 to 2013. We used logistic multivariable regression to search for associations between post-biopsy hospitalization and the two co-morbidities within a year after biopsy. RESULTS Among 3,601 prostate biopsies, 100 infections (3.77%) and 52 (1.44%) bleeding-related emergency room visits and hospitalizations were recorded within 30 days after biopsy. The group having the biopsy as an inpatient exhibited older age (p < 0.0001) and a higher percentage of having diabetes mellitus (p = 0.015) than patients without either complication. The logistic multivariable regression analysis showed that urinary retention, freedom from diabetes, and performance as an outpatient procedure were independent risk factors for infection-related hospitalization (odds ratios 1.81, 1.96, and 1.72; p values 0.031, 0.037, and 0.010, respectively). CONCLUSION Patients with a recent history of urinary retention have a higher probability of infection-related hospitalization after prostate biopsy.
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Affiliation(s)
- Shu-Ling Lin
- 1 Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Chang-Te Lin
- 2 Department of Urology and Chia-Yi Christian Hospital, Chia-Yi City, Taiwan
| | - Wan-Ting Huang
- 3 Department of Medical Research, Chia-Yi Christian Hospital, Chia-Yi City, Taiwan
| | - Yeong-Chin Jou
- 2 Department of Urology and Chia-Yi Christian Hospital, Chia-Yi City, Taiwan
| | - Tzong-Shin Tzai
- 4 Department of Urology, Tainan Municipal An-Nan Hospital, China Medical University, Tainan City
| | - Yuh-Shyan Tsai
- 1 Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
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Johannsen F, Jensen S, Wetke E. 10-year follow-up after standardised treatment for Achilles tendinopathy. BMJ Open Sport Exerc Med 2018; 4:e000415. [PMID: 30305926 PMCID: PMC6173232 DOI: 10.1136/bmjsem-2018-000415] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 06/15/2018] [Revised: 08/19/2018] [Accepted: 09/03/2018] [Indexed: 11/04/2022] Open
Abstract
Background Achilles tendinopathy is a common and often long-lasting injury. We present a 10-year follow-up on a pragmatic study on Achilles tendinopathy treated with controlled exercises supplemented with corticosteroid injections if necessary in order to continue training. Methods All patients who completed the original study (n=93) were invited for a 10-year follow-up. 83% participated. Patients were evaluated with ultrasound scanning (n=58) and with a questionnaire (n=77) using the same outcome measures as in the primary study. The 10-year overall outcome on a 4-point scale (excellent, good, fair, poor), other treatments and adverse event and present activity level were recorded. Results Excellent outcome was reported in 63% and good outcome in 27%. 76% reported an activity level at 75%-100% of preinjury level. The average Victorian Institute of Sports Assessment-Achilles score for all patients was 84 (SD 19). 16% had surgery. Three ruptures occurred 5-8 years after the primary study. The improvement from entry to 6 months in the primary study was maintained until 10-year follow-up. Insertional tendinopathy did not differ from mid-substance tendinopathy in any outcome measure (short term and long term). We encountered no prognostic markers on ultrasound for the long-term outcome; however, present heterogeneity and increased flow resemble present pain. Thickened tendons seem to maintain their thickness despite improvement of symptoms. Conclusion One to two corticosteroid injections are a safe and effective supplement to controlled exercises in the treatment of Achilles tendon pain with no signs of deterioration in the very long term. Mid-substance and insertional tendinopathies benefit equally from this treatment.
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Affiliation(s)
- Finn Johannsen
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital, Copenhagen, Denmark.,Furesø-reumatologerne, Farum, Denmark
| | | | - Eva Wetke
- Department of Orthopedic Surgery, Næstved, Denmark
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Abstract
This essay presents the early days of human cytogenetics, from the late 1950s until the mid 1970s, as a historical series of images. I propose a chronology moving from photographs of bodies to chromosome sets, to be joined by ultrasound images, which provided a return to bodies, by then focused on the unborn. Images carried ontological significance and, as I will argue, are principal characters in the history of human cytogenetics. Inspired by the historiography of heredity and genetics, studies on visual cultures, the conceptualization of circulation, and the sociology of pregnancy, I suggest that cytogenetics, through its focus on pregnancy, pregnant women, and their offspring, found strategic living materials that stabilized human chromosome studies as a biomedical, post-eugenics practice. The historicity of each path displays a wide circulation of objects, tools, and methods that condensed on images that shared in the centuries-old visual expertise that medicine and botany had manufactured.
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Kasatkin AA, Urakov AL, Nigmatullina AR. Using Ultrasonography to Determine Optimal Head-down Tilt Position Angle in Patients before Catheterization of the Internal Jugular Vein. Indian J Crit Care Med 2017; 21:160-162. [PMID: 28400687 PMCID: PMC5363105 DOI: 10.4103/ijccm.ijccm_299_16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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] [Indexed: 11/24/2022] Open
Abstract
Context: It is believed that 15°–25° head-down tilt position increases the internal jugular vein cross-sectional area (IJV CSA). The increase in IJV CSA before puncture reduces the risk of its perforation. This pattern was not observed in all patients. We assumed that the absence of respiratory-based IJV excursion is one of the criteria of head-down tilt position effectiveness. Aims: The aim of this study is to determine the head-down tilt angle, which ensures the absence of the respiratory-based IJV excursion. Subjects and Methods: Prospective study included twenty adult patients. The IJVs scanning was carried out in 1 min after placing the patients in a horizontal position on their back and in 1 min after placing them in the head-down tilt position at 5°, 10°, 15°, and 20° tilt angles. Results: We found that collapsibility index of <9% indicating the absence of respiratory-based IJV excursion was recorded in 25% of patients in the horizontal supine position. In this case, placing the patients in the Trendelenburg position for IJV catheterization may not be indicated. In 65% of the patients, the respiratory-based excursion was not observed at 10° head-down tilt position. Only 35% of the patients required 15° head-down tilt position. Conclusions: In clinical settings, the disappearance of respiratory-based vein excursion on the ultrasound scanner screen can be considered as criteria of the head-down tilt position effectiveness.
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Affiliation(s)
- Anton A Kasatkin
- Department of General and Clinical Pharmacology, Izhevsk State Medical Academy, Izhevsk, Russia; Department of Anesthesiology and Intensive Care, Clinical Hospital, Izhevsk, Russia
| | - Aleksandr L Urakov
- Department of General and Clinical Pharmacology, Izhevsk State Medical Academy, Izhevsk, Russia
| | - Anna R Nigmatullina
- Department of Anesthesiology and Intensive Care, Clinical Hospital, Izhevsk, Russia
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Abstract
CONTEXT Venous outflow from the cranial cavity occurs mainly through the internal jugular vein (IJV). The increase in venous outflow through IJV is possible by head elevation. IJV collapse may indicate the reduction of blood volume in the vein and show the head elevation effectiveness. AIMS The aim of this study is to examine the impact of head elevation on IJV size. SUBJECTS AND METHODS IJV ultrasound scanning in 31 healthy volunteers was carried after gradual head elevation at 15°, 30°, and 45°. Maximum and minimum IJV diameters were recorded. Mean ± standard deviation, median, range, and collapsibility index were calculated. RESULTS Thirty-one volunteers were involved (19 males), their average age was 37.0 ± 11.5 years. Increasing the head elevation angle by 15°, 30° and 45° resulted in a decrease in IJV diameter in the right and left sides in all patients. The occurrence of the vein walls collapse corresponds to the collapsibility index equal to 100%. The results showed that 100% collapsibility index was recorded in 6 patients (19%) at 15° head elevation, in 12 patients (39%) at 30°, in 11 patients (35%) at 45°. In two volunteers (6%), 100% collapsibility index was not recorded even at maximum 45° head elevation. CONCLUSIONS Ultrasound IJV scanning during gradual head elevation together with the collapsibility index calculation could be useful guidance for the venous outflow assessment. In order to prove and extend the study findings, more research is needed.
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Affiliation(s)
- Aleksandr L Urakov
- Department of General and Clinical Pharmacology, Izhevsk State Medical Academy, Izhevsk, Russia
| | - Anton A Kasatkin
- Department of General and Clinical Pharmacology, Izhevsk State Medical Academy, Izhevsk, Russia
| | - Anna R Nigmatullina
- Department of Anesthesiology and Intensive Care, Clinical Hospital, Izhevsk, Russia
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Corcoran S, Breathnach F, Burke G, McAuliffe F, Geary M, Daly S, Higgins J, Hunter A, Morrison JJ, Higgins S, Mahony R, Dicker P, Tully E, Malone FD. Dichorionic twin ultrasound surveillance: sonography every 4 weeks significantly underperforms sonography every 2 weeks: results of the Prospective Multicenter ESPRiT Study. Am J Obstet Gynecol 2015; 213:551.e1-5. [PMID: 26259909 DOI: 10.1016/j.ajog.2015.07.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 07/30/2015] [Indexed: 01/27/2023]
Abstract
OBJECTIVE A 2-week ultrasound scanning schedule for monochorionic twins is endorsed widely. There is a lack of robust data to inform a schedule for the surveillance of dichorionic gestations. We aimed to determine how ultrasound scanning that is performed at 2- or 4-week intervals (or every 4 weeks before 32 weeks' gestation and every 2 weeks thereafter) may impact the prenatal detection of fetal growth restriction (FGR) and ultimately influence timing of delivery. STUDY DESIGN In a consecutive cohort of 789 dichorionic twin pregnancies that were recruited prospectively for the multicenter Evaluation of Sonographic Predictors of Restricted Growth in Twins study, ultrasound determination of fetal growth and interrogation of umbilical and middle cerebral artery Doppler scans were performed every 2 weeks from 24 weeks' gestation until delivery. Complete delivery and perinatal outcome data were recorded for all pregnancies. Where delivery was prompted by FGR, abnormal umbilical artery Doppler examination or poor biophysical profile and in the absence of ruptured membranes, onset of labor, preeclampsia, or antepartum hemorrhage, the delivery was considered "ultrasound-indicated." For ultrasound-indicated deliveries, detection probabilities for FGR/abnormal umbilical artery Doppler scans/poor biophysical were determined according to the interval between examinations, by the suppression if alternate examination data. RESULTS Among 789 dichorionic twin pregnancies, 66 pairs (8%) had an "ultrasound indicated" delivery. Detection of FGR was reduced from 88-69%, and detection of abnormal umbilical artery Doppler was reduced from 82-62% when a 4-week ultrasound schedule was simulated. Both of these reductions reached statistical significance. There was a nonsignificant trend toward a reduction in the recording of oligohydramnios with a 4-week interval between examinations. CONCLUSION This study suggests that the ultrasound surveillance program of every 2 weeks that is recommended currently for monochorionic twins should be extended to dichorionic gestations.
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Leguy MC, Brun S, Pidoux G, Salhi H, Choiset A, Menet MC, Gil S, Tsatsaris V, Guibourdenche J. Pattern of secretion of pregnancy-associated plasma protein-A (PAPP-A) during pregnancies complicated by fetal aneuploidy, in vivo and in vitro. Reprod Biol Endocrinol 2014; 12:129. [PMID: 25543334 PMCID: PMC4293003 DOI: 10.1186/1477-7827-12-129] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 12/12/2014] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Pregnancy-associated placental protein-A (PAPP-A) is a metalloprotease which circulates as an hetero-tetramer in maternal blood. Its maternal serum concentration in fetal trisomy 21 is decreased during the first trimester, so that PAPP-A is a useful screening biomarker. However, the regulation of PAPP-A placental secretion is unclear. We therefore investigated the secretion of PAPP-A in pregnancies complicated by fetal aneuploidies, both in vivo and in vitro. METHODS Maternal serum collected between 10 WG and 33 WG during 7014 normal pregnancies and 96 pregnancies complicated by fetal trisomy 21, 18, and 13 were assayed for PAPP-A using the Immulite 2000xpi system®. The pregnancies were monitored using ultrasound scanning, fetal karyotyping and placental analysis. Villous cytotrophoblasts were isolated from normal and trisomic placenta and cultured to investigate PAPP-A secretion in vitro (n=6). RESULTS An increased nuchal translucency during the first trimester is a common feature of many chromosomal defect but each aneuploidy has its own syndromic pattern of abnormalities detectable at the prenatal ultrasound scanning and confirmed at the fetal examination thereafter. PAPP-A levels rise throughout normal pregnancy whereas in trisomy 21, PAPP-A levels were significantly decreased, but only during the first trimester. PAPP-A levels were decreased in trisomy 13 and sharply in trisomy 18, whatever the gestational age. In vitro, PAPP-A secretion was decreased in aneuploidy, and associated with decreased hCG secretion in Trisomy 21 and 18. These biochemical profiles did not appear to be linked to any specific histological lesions affecting the placenta. CONCLUSIONS These profiles may reflect different quantitative and qualitative placental dysfunctions in the context of these aneuploidies.
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Affiliation(s)
| | - Stephanie Brun
- />Maternity CHU Bordeaux, Place Amélie Raba-Léon, Bordeaux, France
| | | | - Houria Salhi
- />Foeto-pathology CHU Cochin AP-HP, 27 rue du Fbg St Jacques, Paris, France
| | - Agnes Choiset
- />Cytogenetic CHU Cochin AP-HP, 27 rue du Fbg St Jacques, Paris, France
| | | | - Sophie Gil
- />INSERM UMR 1139, 4 av de l’observatoire, Paris, France
- />PremUp foundation, 27 rue du Fbg St Jacques, Paris, France
- />Faculté de Pharmacie, Université Paris Descartes, 4 av de l’observatoire, Paris, France
| | - Vassilis Tsatsaris
- />INSERM UMR 1139, 4 av de l’observatoire, Paris, France
- />PremUp foundation, 27 rue du Fbg St Jacques, Paris, France
- />Maternity CHU Cochin AP-HP, 27 rue du Fbg St Jacques, Paris, France
| | - Jean Guibourdenche
- />Hormonology CHU Cochin AP-HP, 27 rue du Fbg St Jacques, Paris, France
- />INSERM UMR 1139, 4 av de l’observatoire, Paris, France
- />PremUp foundation, 27 rue du Fbg St Jacques, Paris, France
- />Faculté de Pharmacie, Université Paris Descartes, 4 av de l’observatoire, Paris, France
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Aiumlamai S. Effect of a prostaglandin F2 alpha analogue prostinfenem (15-methyl-PGF2 alpha), to induce luteolysis and oestrus in heifers. Acta Vet Scand 1991; 32:327-35. [PMID: 1814182 PMCID: PMC8127892] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Different doses of 15-methyl-PGF2 alpha (0.125-10 mg) were used to induce luteolysis and oestrus in 7 heifers with 28 treatments on day 8-12 of the oestrous cycle. Twenty-three out of 28 treatments gave the desired response and the animals showed signs of oestrus within 5 days post-injection. The doses of 0.25-10 mg can be used to induce luteolysis and oestrus. The dose of 0.125 mg was not effective to induce luteolysis and only 1 out of 4 treatments responded. When higher doses were given (1-10 mg), progesterone levels decreased more rapidly and reached 1 nmol/l 16.2 h earlier than in animals which responded to doses less than 1 mg. The minimum effective dose was considered to be 0.25 mg. Clinical signs of oestrus, regression of corpus luteum and variation in the interval to oestrus were similar as for PGF2 alpha or its other analogues. By measurement of the main circulating prostaglandin F2 alpha metabolite, it was found that an endogenous PGF2 alpha release occurred 1-3 days post-injection of 15-methyl-PGF2 alpha. Furthermore in cases of post-oestrous bleedings an endogenous PGF2 alpha release was also seen concomitantly with the bleeding. This prostaglandin analogue seems to be useful for farm management and can be an alternative to other PGF2 alpha analogues.
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Affiliation(s)
- S Aiumlamai
- Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala
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