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1.
J Environ Manage ; 370: 122801, 2024 Oct 08.
Artigo em Inglês | MEDLINE | ID: mdl-39383751

RESUMO

Regulating the coupled relationship among water, nitrogen, and biochar is an effective strategy for increasing production and reducing emissions in greenhouse agriculture. However, a comprehensive evaluation model remains lacking. Toward this end, we aimed to evaluate the emission patterns of greenhouse gases and greenhouse tomato yield during the spring and autumn cultivation seasons as influenced by irrigation water use efficiency, nitrogen fertilizer partial productivity, and soil organic carbon (SOC). We applied three irrigation levels: 100% (W1), 80% (W2), and 60% (W3) of the reference crop evapotranspiration; three nitrogen application levels: 240, 192, and 144 kg ha-1, representing 100% (N1), 80% (N2), and 60% (N3) of the actual local application amount; and four biochar application gradients: B0, B1, B2, and B3 corresponding to 0, 30, 50, and 70 t ha-1, respectively. Interaction experiments were conducted based on the implementation the incomplete multifactorial design, using W1N1B0 as the control. The entropy weight method was used to calculate the main and sub-weights of the evaluation indicators. During the growing season, greenhouse gas emissions have a significant impact. The cumulative emissions of CO2, N2O, and CH4 from soil in spring are 24.4%, 42.18%, and 13.9% higher than those in autumn, respectively. Soil temperature was a key environmental factor influencing soil CO2 emissions, while soil moisture content and nitrogen fertilizer input efficiency were the main factors affecting soil N2O emissions, and the correlation between soil CH4 emissions and soil organic carbon content was most significant. Water-nitrogen-biochar interaction significantly affected yield and GHGI: adding biochar under the same water-nitrogen- and moderately deficient irrigation(W1) under the same nitrogen-biochar application modes increased yield and reduced GHGI. However, moderately reduced nitrogen application decreased(N2) both measures under the same water-biochar application mode. The VIKOR comprehensive evaluation method determined W2N2B2 as the most suitable water-nitrogen-biochar application mode for optimizing yield and GHGI. This study provides a theoretical basis for stable, low-carbon development in green-intensive agriculture.

2.
Artigo em Inglês | MEDLINE | ID: mdl-39306483

RESUMO

The diagnosis of nasal valve compromise (NVC) is clinical. However, objective evaluation of the nasal airway can support the clinical diagnosis of NVC and quantify the derangement produced by NVC in nasal airflow and in nasal airway resistance. Computational fluid dynamics analysis can quantify disturbances of the normal nasal airway conditions and, furthermore, localize these disturbances to the nasal valve. Objective evaluation of the nasal airway is useful to assess the results of surgery addressing the nasal valve, being able to quantify the improvement in nasal airflow, nasal airway resistance and nasal airway dimensions achieved by surgery.

3.
Am J Sports Med ; 52(11): 2764-2769, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39214073

RESUMO

BACKGROUND: Few studies have compared the characteristics of meniscal allograft tears between medial and lateral meniscal allograft transplantation (MAT) using bone fixation. PURPOSE: To investigate the prevalence, location, and patterns of allograft tears after MAT with the bone fixation technique and compare tear patterns between medial and lateral compartments according to the time elapsed after surgery. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: The charts of consecutive patients who underwent primary medial or lateral MAT between December 1996 and June 2019 were retrospectively reviewed. The location, pattern, and postoperative periods during which allograft tears occurred were evaluated by reviewing all series of follow-up magnetic resonance imaging (MRI) scans, which were performed at 6 weeks, 3 months, 6 months, and 1 year postoperatively and every 2 years thereafter with the patient's agreement. Postoperative periods for allograft tears were defined as the time between surgery and the follow-up MRI scan in which the meniscal tear was first confirmed. Allograft tears were compared between the medial and lateral MAT groups. RESULTS: A total of 327 consecutive patients who underwent MAT (55 medial, 272 lateral) with a minimum 2-year follow-up were retrospectively reviewed. The incidences of allograft tears after medial and lateral MATs were 32.7% and 30.9%, respectively. The mean times for tears were 80.1 ± 81.1 months and 48.9 ± 46.3 months in the medial and lateral MAT groups, respectively (P = .130). In both the medial and lateral MAT groups, allograft tears were observed mainly in the posterior horn, with complex tears being the most commonly identified tear type. In medial MATs, root tears were the second most common at 27.8%, with a significantly higher proportion than the lateral MATs (P = .014). On the other hand, in lateral MATs, meniscocapsular separation and radial tears were the second most common at 15.5% each, albeit not significantly more common than in medial MATs (P = .123 and P = .454, respectively). All root tears in medial MATs and meniscocapsular separations in lateral MATs were observed within 1 year postoperatively. CONCLUSION: Significant differences in allograft tear patterns were identified between the medial and lateral MAT groups. The proportion of root tears in medial MATs was higher than that in lateral MATs; conversely, the proportion of meniscocapsular separation was more common in lateral MATs. Such tear patterns, which may require surgical repair or graft resection, were observed only within 1 year of surgery. Therefore, close observation and regular follow-up in the earlier postoperative period are necessary after medial or lateral MATs.


Assuntos
Aloenxertos , Imageamento por Ressonância Magnética , Meniscos Tibiais , Lesões do Menisco Tibial , Humanos , Estudos Retrospectivos , Masculino , Feminino , Adulto , Meniscos Tibiais/cirurgia , Meniscos Tibiais/diagnóstico por imagem , Meniscos Tibiais/transplante , Lesões do Menisco Tibial/cirurgia , Lesões do Menisco Tibial/diagnóstico por imagem , Adulto Jovem , Pessoa de Meia-Idade , Transplante Homólogo , Adolescente
4.
Ann Nucl Med ; 38(9): 763-773, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38907835

RESUMO

OBJECTIVE: This study aims to assess the utility of newly developed objective methods for the evaluation of intracranial abnormal amyloid deposition using PET/CT histogram without use of cortical ROI analyses. METHODS: Twenty-five healthy volunteers (HV) and 38 patients with diagnosed or suspected dementia who had undergone 18F-FPYBF-2 PET/CT were retrospectively included in this study. Out of them, 11C-PiB PET/CT had been also performed in 13 subjects. In addition to the conventional methods, namely visual judgment and quantitative analyses using composed standardized uptake value ratio (comSUVR), the PET images were also evaluated by the following new parameters: the skewness and the mode-to-mean ratio (MMR) obtained from the histogram of the brain parenchyma; Top20%-map highlights the areas with high tracer accumulation occupying 20% volume of the total brain parenchymal on the individual's CT images. We evaluated the utility of the new methods using histogram compared with the visual assessment and comSUVR. The results of these new methods between 18F-FPYBF-2 and 11C-PiB were also compared in 13 subjects. RESULTS: In visual analysis, 32, 9, and 22 subjects showed negative, border, and positive results, and composed SUVR in each group were 1.11 ± 0.06, 1.20 ± 0.13, and 1.48 ± 0.18 (p < 0.0001), respectively. Visually positive subjects showed significantly low skewness and high MMR (p < 0.0001), and the Top20%-Map showed the presence or absence of abnormal deposits clearly. In comparison between the two tracers, visual evaluation was all consistent, and the ComSUVR, the skewness, the MMR showed significant good correlation. The Top20%-Maps showed similar pattern. CONCLUSIONS: Our new methods using the histogram of the brain parenchymal accumulation are simple and suitable for clinical practice of amyloid PET, and Top20%-Map on the individual's brain CT can be of great help for the visual assessment.


Assuntos
Amiloide , Encéfalo , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Humanos , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Masculino , Feminino , Encéfalo/diagnóstico por imagem , Encéfalo/metabolismo , Idoso , Pessoa de Meia-Idade , Amiloide/metabolismo , Compostos de Anilina , Estudos Retrospectivos , Processamento de Imagem Assistida por Computador/métodos , Adulto , Tiazóis , Idoso de 80 Anos ou mais , Demência/diagnóstico por imagem , Demência/metabolismo
5.
Aesthetic Plast Surg ; 2024 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-38740625

RESUMO

BACKGROUND: Masseter hypertrophy is a common condition that causes a undesirable square face, and often treated with botulinum toxin type A (BoNTA). Subjective assessments of BoNTA effectiveness vary from physician to patient, necessitating an objective approach for evaluation. This study introduces three-dimensional photography (3DP) for the first time in clinical assessment to evaluate BoNTA treatment for masseter hypertrophy. METHODS: Ten patients received 36U of BoNTA at three injection points on each side masseter muscle. 3DP scanner using Artec Eva® was taken at the first, third, and sixth postoperative months for objective evaluation. Patient's self-perceived prominence, patients self-rated satisfaction, and physicians provided 5-grade scores were the subjective indicators. RESULTS: A significant decrease in left masseter volume at the sixth month (P = 0.002, P = 0.004 at rest and clenching, respectively) was observed. Patient's self-perceived prominence decreased at the first (P = 0.021) and third (P = 0.039) months. Physicians' scores significantly decreased at all postoperative months. No significant changes were noted in the right masseter volume and patients self-rated satisfaction. Patient self-rated satisfaction did not consistently correlate with objective measures, except for left masseter with clenching at the sixth month. CONCLUSION: Three-dimensional photography accurately quantifies facial changes post-BoNTA treatment. Despite objective improvements, patient satisfaction may not align consistently. Reliable assessment tools are crucial in cosmetic surgery to manage expectations and prevent disputes. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

6.
Front Neurosci ; 18: 1415679, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38803686

RESUMO

Multimodal medical fusion images (MMFI) are formed by fusing medical images of two or more modalities with the aim of displaying as much valuable information as possible in a single image. However, due to the different strategies of various fusion algorithms, the quality of the generated fused images is uneven. Thus, an effective blind image quality assessment (BIQA) method is urgently required. The challenge of MMFI quality assessment is to enable the network to perceive the nuances between fused images of different qualities, and the key point for the success of BIQA is the availability of valid reference information. To this end, this work proposes a generative adversarial network (GAN) -guided nuance perceptual attention network (G2NPAN) to implement BIQA for MMFI. Specifically, we achieve the blind evaluation style via the design of a GAN and develop a Unique Feature Warehouse module to learn the effective features of fused images from the pixel level. The redesigned loss function guides the network to perceive the image quality. In the end, the class activation mapping supervised quality assessment network is employed to obtain the MMFI quality score. Extensive experiments and validation have been conducted in a database of medical fusion images, and the proposed method is superior to the state-of-the-art BIQA method.

7.
Sensors (Basel) ; 24(5)2024 Mar 04.
Artigo em Inglês | MEDLINE | ID: mdl-38475203

RESUMO

To satisfy the preference of each driver, the development of a Lane-Keeping Assistance (LKA) system that can adapt to individual drivers has become a research hotspot in recent years. However, existing studies have mostly relied on the assumption that the LKA characteristic aligned with the driver's preference is consistent with this driver's naturalistic driving characteristic. Nevertheless, this assumption may not always hold true, causing limitations to the effectiveness of this method. This paper proposes a novel method for a Driver-Adaptive Lane-Keeping Assistance (DALKA) system based on drivers' real preferences. First, metrics are extracted from collected naturalistic driving data using action point theory to describe drivers' naturalistic driving characteristics. Then, the subjective and objective evaluation method is introduced to obtain the real preference of each test driver for the LKA system. Finally, machine learning methods are employed to train a model that relates naturalistic driving characteristics to the drivers' real preferences, and the model-predicted preferences are integrated into the DALKA system. The developed DALKA system is then subjectively evaluated by the drivers. The results show that our DALKA system, developed using this method, can enhance or maintain the subjective evaluations of the LKA system for most drivers.

8.
Zhongguo Zhong Yao Za Zhi ; 49(1): 123-129, 2024 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-38403345

RESUMO

This study explored the preparation process of the placebo of Jiawei Ermiao Granules and evaluated the placebo effect, aiming to provide qualified placebo samples for clinical trials of Jiawei Ermiao Granules and a reference for the preparation and quality evaluation of placebos of traditional Chinese medicine granules. On the basis of the comprehensive analysis results of Jiawei Ermiao Granules, the orthogonal experiment was conducted to optimize the flavoring agents and colorants. After manual evaluation, the placebo formula was determined as dextrin 10 g, Codonopsis Radix extract 5.0 g, bitter melon extract 1.6 g, Mume Fructus extract 0.3 g, stevioside 0.1 g, sucrose octaacetate 0.004 g, indigo 0.004 g, lemon yellow 0.003 1 g, sunset yellow 0.001 8 g, bitter tea powder 0.001 8 g, caramel 0.001 3 g. Pilot trials were conducted on the placebo formula. The simulation effect of placebo was evaluated independently and comparatively, and the objectively evaluated by electronic nose and electronic tongue. The results showed that the independent manual evaluation of the placebo formula had higher error rate, and the placebo and Jiawei Ermiao Granules showed the similarity of 99.61% in the comparative manual evaluation. The smell similarity between the placebo and Jiawei Ermiao Granules was 99.19%, and the electronic tongue test showed little difference in the taste. In conclusion, the placebo prepared in this study shows a high similarity to Jiawei Ermiao Granules, which is not easy to break the blindness when being applied to clinical trials. This study provides a reference for the preparation and quality evaluation and promotes the large-scale production of placebos of traditional Chinese medicine granules, playing a role in improving the persuasiveness and acceptance of the efficacy of traditional Chinese medicines.


Assuntos
Medicamentos de Ervas Chinesas , Medicamentos de Ervas Chinesas/uso terapêutico , Medicina Tradicional Chinesa , Paladar
9.
Front Bioeng Biotechnol ; 12: 1325339, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38375453

RESUMO

Background: The functional movement screen (FMS) has been used to identify deficiencies in neuromuscular capabilities and balance among athletes. However, its effectiveness in detecting movement anomalies within the population afflicted by knee osteoarthritis (KOA), particularly through the application of a family-oriented objective assessment technique, remains unexplored. The objective of this study is to investigate the sensitivity of the FMS and daily activities in identifying kinematic abnormalities in KOA people employing a markerless motion capture system. Methods: A total of 45 persons, presenting various Kellgren-Lawrence grades of KOA, along with 15 healthy controls, completed five tasks of the FMS (deep squat, hurdle step, and in-line lunge) and daily activities (walking and sit-to-stand), which were recorded using the markerless motion capture system. The kinematic waveforms and discrete parameters were subjected to comparative analysis. Results: Notably, the FMS exhibited greater sensitivity compared to daily activities, with knee flexion, trunk sagittal, and trunk frontal angles during in-line lunge emerging as the most responsive indicators. Conclusion: The knee flexion, trunk sagittal, and trunk frontal angles during in-line lunge assessed via the markerless motion capture technique hold promise as potential indicators for the objective assessment of KOA.

10.
Spine Surg Relat Res ; 7(6): 533-539, 2023 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-38084214

RESUMO

Introduction: Low-back pain causes sleep disorders, which impairs the quality of life (QOL) of patients. Sleep disorders are associated with lumbar spinal stenosis (LSS); however, the postoperative effects of LSS surgery on sleep disorders are unknown. This study aimed to assess sleep disorders in patients with LSS using wearable activity trackers and determine whether surgery improves sleep quality. Methods: A total of 39 patients scheduled for LSS surgery (mean age 71.1±8.7 years; 22 men and 17 women) were studied. Sleep disorders in the participants were objectively evaluated using a wearable Motionlogger Micro system. Sleep efficiency (SEf), mean active count (MAC), and wake after sleep onset (WASO) were measured before and 6 months following surgery. Furthermore, the patient-based outcomes of pain and QOL-related scores were measured and compared with those of healthy participants. The group with improved SEf following surgery was designated as "nonpoor sleepers," whereas the group that did not exhibit improvements was designated as "poor sleepers." The two groups were compared based on patient factors, patient-based questionnaires, and sleep disorder measurements. Results: The SEf and WASO were significantly worse in patients with LSS compared with healthy participants (P<0.05). Furthermore, the SEf in patients with LSS was associated with the Oswestry Disability Index scores. No improvement was observed in the SEf, MAC, and WASO before and after surgery. Evaluation of each case revealed 21 and 12 cases of nonpoor and poor sleepers, respectively. Preoperative low-back pain was significantly associated with improvement in postoperative sleep quality. Conclusions: Sleep disorders in patients with LSS were evaluated, and improvement in sleep disorders following surgery was associated with the intensity of preoperative low-back pain. Sleep disorders are associated with QOL disorders, suggesting that focusing on the treatment of sleep disorders is important in the management of patients with LSS.

11.
JPRAS Open ; 38: 14-24, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37694192

RESUMO

Background: The prominent ear is a type of congenital ear deformity that can be corrected by a variety of nonsurgical treatments, such as splinting and the taping method. However, there is no objective evaluation method that is universally accepted. The aim of this review is to evaluate objective measurement methods that are used in the available literature to analyze nonsurgical treatment of prominent ears. Methods: A systematic review was performed in the MEDLINE and Embase databases in December 2022 and updated on April 2023 according to Preferred Reporting Items for Systematics and Meta-Analyses (PRISMA) guideline. Any study using objective measurements (continuous variables such as distance and angle) to evaluate the effect of nonsurgical treatment of prominent ears was included. The Joanna Briggs Institute (JBI) critical appraisal for case series was used for quality assessment. Results: A total of 286 studies were screened for eligibility, of which five articles were eligible for inclusion. All of the included studies were case series. The helix mastoid distance (HMD) is the most commonly used parameter to measure treatment outcome. Pinna and cartilage stiffness, length, and width were also used, but without clear statistical relevance. HMD was classified into grading groups (i.e. good, moderate, and poor) to evaluate the treatment's effect. Conclusion: Based on the included studies, objective measurements are rarely used, and when used, they are largely heterogeneous. Although HMD was the most frequent measurement used, all studies used different definitions for the measurement and grouped subsequent outcomes differently. Automated algorithms, based on three-dimensional imaging, could be used for object measurements in the nonsurgical treatment of prominent ears.

12.
JPRAS Open ; 38: 65-81, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37719440

RESUMO

Background: Commonly used methods to evaluate auricles are subjective and are therefore not specific, comprehensive, and precise nor effective in the assessment of microtia reconstruction outcomes. This scoping review aimed to summarize the objective methods for the accurate evaluation of microtia reconstruction. Methods: We performed a scoping review of publications that used objective measurement methods to evaluate outcomes of microtia reconstruction according to the PRISMA-ScR guidelines. A systematic literature search was conducted in the Embase, PubMed, Cochrane, CNKI, and VIP databases, and literature references were screened for additional records. Studies that evaluated auricles after microtia reconstruction using quantitative anthropometric methods were included, and data on these methods were collected. Results: Twenty-five publications reported on quantitative objective outcome measurements. Thirteen studies evaluated auricular protrusion, three articles assessed the position or symmetry, and twelve studies reported on auricle size. The quantitative measurements of fine structures, such as the tragus and concha, were described in three studies. All described measurements used manual landmarking, where fifteen studies described well-defined landmarks, fifteen studies described poorly defined landmarks, and four studies used a combination of well and poorly defined landmarks. Conclusion: The objective evaluation of microtia reconstruction outcomes is hindered by significant heterogeneity of measurement methods. The measurement methods used for general auricular measurements (auricular protrusion, auriculocephalic angle, and size) used in microtia reconstruction were abundant, while measurements of auricular position and the fine structures of the auricle were limited. Three-dimensional imaging combined with computer analyses poses promising future alternatives.

13.
Arerugi ; 72(4): 375-387, 2023.
Artigo em Japonês | MEDLINE | ID: mdl-37316242

RESUMO

BACKGROUND: Sublingual immunotherapy (SLIT) has become applicable to insurance for children in Japan in 2018. However, as for the efficacy of SLIT for children, objective evaluation methods have not been sufficiently investigated. SUBJECTS AND METHODS: We investigated the efficacy of SLIT as both subjective and objective evaluation in 44 children with allergic rhinitis sensitized to house dust mite who started the treatment in the summer of 2018 in our hospital. The children and their patients wrote the allergy diary every day, and in winter/spring/summer vacations, they answered Japanese allergic rhinitis quality of life standard questionnaire and were evaluated with nasal provocation test, blood test, rhinomanometry for 3 years. RESULTS: 29 (66%) of the 44 children continued SLIT for 3 years. Symptom scores, QOL scores, symptom medication scores halved in a year and the effect lasted in the second and third year. Nasal provocation test and rhinomanometry showed significant improvement. Specific IgE increased transiently and then decreased. Specific IgG4 increased annually. CONCLUSION: The present study showed a decrease in scores not only for subjective assessments but also for objective evaluation methods, the house dust nasal provocation test and the nasal airway resistance.


Assuntos
Rinite Alérgica , Imunoterapia Sublingual , Humanos , Criança , Animais , Pyroglyphidae , Qualidade de Vida , Rinite Alérgica/terapia , Japão
14.
Sensors (Basel) ; 23(3)2023 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-36772337

RESUMO

The usage of media such as images and videos has been extensively increased in recent years. It has become impractical to store images and videos acquired by camera sensors in their raw form due to their huge storage size. Generally, image data is compressed with a compression algorithm and then stored or transmitted to another platform. Thus, image compression helps to reduce the storage size and transmission cost of the images and videos. However, image compression might cause visual artifacts, depending on the compression level. In this regard, performance evaluation of the compression algorithms is an essential task needed to reconstruct images with visually or near-visually lossless quality in case of lossy compression. The performance of the compression algorithms is assessed by both subjective and objective image quality assessment (IQA) methodologies. In this paper, subjective and objective IQA methods are integrated to evaluate the range of the image quality metrics (IQMs) values that guarantee the visually or near-visually lossless compression performed by the JPEG 1 standard (ISO/IEC 10918). A novel "Flicker Test Software" is developed for conducting the proposed subjective and objective evaluation study. In the flicker test, the selected test images are subjectively analyzed by subjects at different compression levels. The IQMs are calculated at the previous compression level, when the images were visually lossless for each subject. The results analysis shows that the objective IQMs with more closely packed values having the least standard deviation that guaranteed the visually lossless compression of the images with JPEG 1 are the feature similarity index measure (FSIM), the multiscale structural similarity index measure (MS-SSIM), and the information content weighted SSIM (IW-SSIM), with average values of 0.9997, 0.9970, and 0.9970 respectively.

15.
Sci Total Environ ; 858(Pt 1): 159840, 2023 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-36369680

RESUMO

Anaerobic digestion (AD) is an efficient technology for treating biowaste and generating biogas. A reasonable evaluation of AD performance is crucial to its development. Herein, a comprehensive evaluation system covering five dimensions (energy output, process stability, degradation efficiency, digestate fertility, and digestate safety) was established to assess AD performance. Each dimension in the evaluation system was assigned a specific indicator defined by a threshold or range. Additionally, the proposed evaluation system was applied to assess a case study of batch-mode mesophilic AD that employed three industrial waste residues as mineral accelerants (nickel­iron slag, steel slag, and fly ash). The mineral accelerants enhanced the energy output (methane yield by 66.55 %-87.54 %) and the feedstock degradation (chemical oxygen demand removal ratio by 11.23 %-32.42 %). The digestates also retained promising safety (heavy metal contents of 190-1260 mg/kg) and fertility (total nutrient contents of 3.71 %-4.69 %). The evaluation system reasonably appraised the comprehensive performance of accelerant-enhanced AD systems with cow manure. This work provides a reliable methodology for evaluating and comparing the performance of different novel accelerants and can be applied to evaluate the comprehensive performance of large-scale biogas projects with cow manure.


Assuntos
Biocombustíveis , Esterco , Animais , Bovinos , Anaerobiose , Reatores Biológicos , Metano , Minerais , Digestão
16.
Artigo em Inglês | MEDLINE | ID: mdl-36465994

RESUMO

Objective evaluation of quantitative imaging (QI) methods with patient data is highly desirable, but is hindered by the lack or unreliability of an available gold standard. To address this issue, techniques that can evaluate QI methods without access to a gold standard are being actively developed. These techniques assume that the true and measured values are linearly related by a slope, bias, and Gaussian-distributed noise term, where the noise between measurements made by different methods is independent of each other. However, this noise arises in the process of measuring the same quantitative value, and thus can be correlated. To address this limitation, we propose a no-gold-standard evaluation (NGSE) technique that models this correlated noise by a multi-variate Gaussian distribution parameterized by a covariance matrix. We derive a maximum-likelihood-based approach to estimate the parameters that describe the relationship between the true and measured values, without any knowledge of the true values. We then use the estimated slopes and diagonal elements of the covariance matrix to compute the noise-to-slope ratio (NSR) to rank the QI methods on the basis of precision. The proposed NGSE technique was evaluated with multiple numerical experiments. Our results showed that the technique reliably estimated the NSR values and yielded accurate rankings of the considered methods for 83% of 160 trials. In particular, the technique correctly identified the most precise method for ∼ 97% of the trials. Overall, this study demonstrates the efficacy of the NGSE technique to accurately rank different QI methods when correlated noise is present, and without access to any knowledge of the ground truth. The results motivate further validation of this technique with realistic simulation studies and patient data.

17.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi ; 36(12): 966-970;976, 2022 Dec.
Artigo em Chinês | MEDLINE | ID: mdl-36543409

RESUMO

Acoustic analysis of the voice, as an objective, quantitative, non-invasive and reproducible method for the evaluation of voice quality, can be used to detect and analyze the acoustic characteristics of normal, artistic or pathological voice. With the development of medicine, physics, statistics, and artificial intelligence technology, there are new advances in the study of voice acoustic analysis, especially in terms of acoustic parameters. In addition, artificial neural networks can be used to perform complex multi-parameter analysis, which greatly improves the efficiency of acoustic analysis. This paper provides an overview of the methods of acoustic analysis and its latest development.


Assuntos
Inteligência Artificial , Voz , Humanos , Acústica da Fala , Acústica , Qualidade da Voz
18.
Zh Nevrol Psikhiatr Im S S Korsakova ; 122(11. Vyp. 2): 24-29, 2022.
Artigo em Russo | MEDLINE | ID: mdl-36412152

RESUMO

OBJECTIVE: A clinical approbation of a proprietary method for evaluation of the diagnostic value of computer video analysis of hypomimia in patients with Parkinson's disease (PD). MATERIAL AND METHODS: The study included 31 patients diagnosed with PD and 31 healthy people. The method consists in contactless recognition of 68 reference points on the face that are used to determine the movement of eyebrows, eyelids and the mouth during diagnostic tests: smiling, drawing of the letter "O", winking, eyebrow raising, frowning, and text reading. RESULTS: Comparison of the results obtained with characteristics of healthy subjects has revealed statistically significant difference in the amplitude and speed of eyebrow, eyelid and mouth movement in PD patients. CONCLUSION: The method offers prospects for screening of patients with suspected PD and evaluation of therapy efficacy.


Assuntos
Doença de Parkinson , Humanos , Face , Nível de Saúde , Voluntários Saudáveis , Movimento , Doença de Parkinson/complicações , Doença de Parkinson/diagnóstico , Estudos de Casos e Controles , Expressão Facial
19.
Rev. ADM ; 79(3): 177-181, mayo-jun. 2022.
Artigo em Espanhol | LILACS | ID: biblio-1379096

RESUMO

La masticación tiene como objetivo la adecuada preparación de los alimentos para su deglución y digestión. Cualquier alteración en el sistema estomatognático puede deteriorar la masticación. El odontó- logo es el profesional responsable de mantener y/o restaurar la función masticatoria. La evaluación de la función masticatoria puede hacerse de forma subjetiva utilizando cuestionarios para medir la percepción del paciente sobre su capacidad masticatoria o de forma objetiva analizando la fuerza oclusal, la actividad electromiográfica de los músculos mas- ticadores, la trayectoria de la mandíbula al masticar o la capacidad de trituración de los alimentos. Estos métodos se utilizan en proyectos de investigación, pero en la clínica ¿evaluamos si existe alguna alteración al masticar y al finalizar el tratamiento si cumplimos con el objetivo de restaurar la función masticatoria? ¿Realmente nos preocupamos por mantener y/o restaurar la función masticatoria? Por lo general no, ni en los consultorios, ni en las clínicas universitarias. Es esencial que nos concienticemos de nuestra responsabilidad y para ello es necesario que se le dé mayor peso curricular a la función masticatoria y cómo evaluarla. Seamos realmente custodios de la función masticatoria de nuestros pacientes (AU)


The goal of chewing is to properly prepare food for swallowing and digestion. Any problem in the stomatognathic system can deteriorate chewing. The professional responsible of maintaining and/or restoring masticatory function is the dentist. Masticatory function can be evaluated subjectively through questionnaires to measure the patient's perception of his/her masticatory capacity or objectively analyzing occlusal force, the electromyographic activity of the masticatory muscles, the movements of the mandible during chewing or the individual's capacity to breakdown food. These methods are used in research projects but, do we examine if there is any problem during chewing and if we are achieving our goal of restoring masticatory function at the end of the treatment in our offices? Do we really focus on maintaining and/or restoring masticatory function? Not truly, not in our offices or university clinics. It is imperative that we acknowledge our responsibility but for that it is essential that masticatory function and how to evaluate it is given more weight in the curriculum. Let us be genuine guardians of the masticatory function of our patients (AU)


Assuntos
Humanos , Sistema Estomatognático , Mastigação , Músculos da Mastigação , Percepção , Força de Mordida , Inquéritos e Questionários , Deglutição/fisiologia
20.
Indian J Orthop ; 56(5): 717-740, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35547350

RESUMO

Background: The primary objective of this review is to estimate the rotational correction after corrective derotation osteotomies (CDO) for congenital radioulnar synostosis (CRUS). The secondary objective of this review is to identify the complications with CDO in CRUS. Methods: We included studies in the English literature from electronic bibliographic databases Cochrane Central Register of Controlled Trials (CENTRAL), CINAHL, Directory of Open access journals (DOAJ), EMBASE, MEDLINE, ProQuest, PubMed, and Scopus up to December 2020 that determined the effects of CDO in CRUS for two or more cases with a mean follow-up of 1 year or more. We used the National Institutes of health quality assessment tool for case series (interventional) and Modified Coleman methodology Score for assessment of risk of bias in the included studies. Results: We pooled 383 forearms (318 participants) from 23 studies with mean age of 6.28 ± 1.75 years. The mean pronation deformity was 72.83 ± 15.64° from 22 studies. The CDO derotated forearm to 10.4 ± 5.90° of mean pronation in 12 studies and 13.47 ± 9.51° of mean supination in nine studies. One study corrected the forearms to a neutral position. The mean derotation from CDO was 73.13 ± 16.54° (35° supination to 130° pronation). The overall mean difference was - 68.26° [95% CI - 86.87, - 49.66] of correction favoring supination. There were eight transient nerve palsies and six compartment syndromes from synostosis site osteotomies (four studies). Discussion: We had poor-quality studies at a high risk of bias on the described tools of assessment. We could estimate the directional effect of CDO in CRUS favoring correction from pronation to supination; however, due to the heterogeneity among studies, we cannot comment on the most efficient and least harmful CDO techniques. The single bone osteotomies seem to be efficient, simple, and reportedly low on complications but need evaluation. We cannot define the indications for correction and expected improvement in functional outcomes from osteotomy techniques. Supplementary Information: The online version contains supplementary material available at 10.1007/s43465-021-00582-4.

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