Autopsy ; Biomedical Research ; ethics ; legislation & jurisprudence ; Brain ; pathology ; Humans ; Tissue Banks ; ethics ; legislation & jurisprudence

Access to Information ; Biomedical Research ; Editorial Policies ; Ethics, Research ; Humans ; Internet ; Journal Impact Factor ; Open Access Publishing ; Peer Review ; Periodicals as Topic ; Singapore

Biomedical Research ; ethics ; Humans ; Microbiota ; Research Design ; standards

Biomedical Research ; ethics ; Human Rights ; Humans ; Public Health

OBJECTIVE: To evaluate the feasibility of a parameter-free intravoxel incoherent motion (IVIM) approach in cervical cancer, to assess the optimal b-value threshold, and to preliminarily examine differences in the derived perfusion and diffusion parameters for different histological cancer types. MATERIALS AND METHODS: After Institutional Review Board approval, 19 female patients (mean age, 54 years; age range, 37–78 years) gave consent and were enrolled in this prospective magnetic resonance imaging study. Clinical staging and biopsy results were obtained. Echo-planar diffusion weighted sequences at 13 b-values were acquired at 3 tesla field strength. Single-sliced region-of-interest IVIM analysis with adaptive b-value thresholds was applied to each tumor, yielding the optimal fit and the optimal parameters for pseudodiffusion (D*), perfusion fraction (F(p)) and diffusion coefficient (D). Monoexponential apparent diffusion coefficient (ADC) was calculated for comparison with D. RESULTS: Biopsy revealed squamous cell carcinoma in 10 patients and adenocarcinoma in 9. The b-value threshold (median [interquartile range]) depended on the histological type and was 35 (22.5–50) s/mm² in squamous cell carcinoma and 150 (100–150) s/mm² in adenocarcinoma (p < 0.05). Comparing squamous cell vs. adenocarcinoma, D* (45.1 [25.1–60.4] × 10⁻³ mm²/s vs. 12.4 [10.5–21.2] × 10⁻³ mm²/s) and F(p) (7.5% [7.0–9.0%] vs. 9.9% [9.0–11.4%]) differed significantly between the subtypes (p < 0.02), whereas D did not (0.89 [0.75–0.94] × 10⁻³ mm²/s vs. 0.90 [0.82–0.97] × 10⁻³ mm²/s, p = 0.27). The residuals did not differ (0.74 [0.60–0.92] vs. 0.94 [0.67–1.01], p = 0.32). The ADC systematically underestimated the magnitude of diffusion restriction compared to D (p < 0.001). CONCLUSION: The parameter-free IVIM approach is feasible in cervical cancer. The b-value threshold and perfusion-related parameters depend on the tumor histology type.
Adenocarcinoma ; Biopsy ; Carcinoma, Squamous Cell ; Diffusion ; Diffusion Magnetic Resonance Imaging ; Epithelial Cells ; Ethics Committees, Research ; Female ; Humans ; Magnetic Resonance Imaging ; Perfusion ; Perfusion Imaging ; Prospective Studies ; Technology Assessment, Biomedical ; Uterine Cervical Neoplasms*

Attitude of Health Personnel ; Biomedical Research ; Child ; Ethics, Research ; Humans ; Pediatrics

The paradigm of a real world study has become the frontiers of clinical researches, especially in the field of Chinese medicine, all over the world in recent years. In this paper, ethical issues which probably exist in real-world studies are raised and reviewed. Moreover, some preliminary solutions to these issues such as protecting subjects during the process of real-world studies and performing ethical review are raised based on recent years' practices to enhance the scientificity and ethical level of real-world studies.
Biomedical Research ; ethics ; methods ; Humans

In recent years, medical professionals are in charge with multiple roles. They have to work as an educator, researcher, and administrator, as well as medical practitioner. In addition, they experience a conflict between the primary responsibilities that each role requires of them. A conflict of interest (COI) is a set of circumstances that creates a risk that professional judgment or actions regarding a primary interest will be unduly influenced by a secondary interest. It occurs when an individual or organization is involved in multiple interests, one of which could possibly corrupt the motivation for an act in the other. The COI should be managed appropriately to preserve the value of public trust, scientific objectivity, and the benefit and safety of patients. Primary interest of medical professionals refers to the principal goals of the medical profession, such as the health and safety of patients, and the integrity of research. Secondary interest includes not only financial gain but also such motives as the desire for professional advancement and the wish to do favors for family and friends, but COI rules usually focus on financial relationships because they are relatively more objective, fungible, and quantifiable. This article will briefly review the COI in medical practice and research, discuss about what is COI, why we should manage it, and how we can manage it.
Biomedical Research/*ethics ; *Conflict of Interest ; *Ethics, Medical ; Humans ; Physicians/ethics/psychology

There are many international guidelines that have been developed to ensure that the conduct of researches by countries, institutions and individuals are ethical. There are, however, unique opportunities as well as challenges in research in the ASEAN region which mandate not only adherence to these guidelines but which necessitate regional as well as individual country efforts to ensure that biomedical researches uphold the dignity, ensure safety and protect the rights of participants. Some of the challenges are: the widespread poverty or uneven distribution of resources in developing countries which cause patients to participate in clinical trials to avail of services that otherwise are inaccessible, lack of a research infrastructure that makes ethics review of protocols inadequate or slow, and lack of post-trial access to medications which have been tested in precisely the populations that need these drugs. The aim of this paper is to review the ethical challenges in health research encountered in Asia and to describe the regional efforts being undertaken to address them.

Human ; Asia ; Developing Countries ; Health Occupations ; Health Resources ; Poverty ; Research ; Safety ; Ethics ; Biomedical Research ; Ethics, Research

Clinical experiments are always used to evaluate the safety and validity of medical devices. The experiments have two types of clinical trying and testing. Ethic review must be done by the ethics committee of the medical department with the qualification of clinical research, and the approval must be made before the experiments. In order to ensure the safety and validity of clinical experiments of medical devices in medical institutions, the contents, process and approval criterions of the ethic review were analyzed and discussed.
Biomedical Research ; ethics ; Equipment and Supplies ; ethics ; Ethical Review ; Humans