Abstract:
OBJECTIVES:Accurate assessment of cartilage status is increasingly becoming important to clinicians for offering joint preservation surgeries versus joint replacements. The goal of this study was to evaluate the validity of three-dimensional (3D), gradient-echo (GRE)-based T2* and T1Gd mapping for the assessment of various histological severities of degeneration in knee joint cartilage with potential implications for clinical management. METHODS:MRI and histological assessment were conducted in 36 ex vivo lateral femoral condyle specimens. The MRI protocol included a 3D GRE multiecho data image combination sequence in order to assess the T2* decay, a 3D double-echo steady-state sequence for assessment of cartilage morphology, and a dual flip angle 3D GRE sequence with volumetric interpolated breathhold examination for the T1Gd assessment. The histological sample analysis was performed according to the Mankin system. The data were then analysed statistically and correlated. RESULTS:We observed a significant decrease in the T2* and T1Gd values with increasing grades of cartilage degeneration (p<0.001) and a moderate correlation between T2* (r=0.514)/T1Gd (r=0.556) and the histological grading of cartilage degeneration (p<0.001). In addition, we noted a zonal variation in the T2* and T1Gd values reflecting characteristic zonal differences in the biochemical composition of hyaline cartilage. CONCLUSIONS:This study outlines the potential of GRE-based T2* and T1Gd mapping to identify various grades of cartilage damage. Early changes in specific zones may assist clinicians in identifying methods of early intervention involving the targeted joint preservation approach versus moving forward with unicompartmental, bicompartmental or tricompartmental joint replacement procedures. TRIAL REGISTRATION NUMBER:DRKS00000729.
journal_name
BMJ Openjournal_title
BMJ openauthors
Bittersohl B,Hosalkar HS,Miese FR,Schibensky J,König DP,Herten M,Antoch G,Krauspe R,Zilkens Cdoi
10.1136/bmjopen-2014-006895subject
Has Abstractpub_date
2015-02-09 00:00:00pages
e006895issue
2issn
2044-6055pii
bmjopen-2014-006895journal_volume
5pub_type
杂志文章相关文献
BMJ Open文献大全abstract:PURPOSE:Progression of stable coronary artery disease (CAD) towards acute coronary syndrome (ACS) is a dynamic and heterogeneous process with many intertwined constituents, in which a plaque destabilising sequence could lead to ACS within short time frames. Current CAD risk assessment models, however, are not designed ...
journal_title:BMJ open
pub_type: 杂志文章,多中心研究
doi:10.1136/bmjopen-2016-012929
更新日期:2016-12-23 00:00:00
abstract:BACKGROUND:Osteoporosis is an age-related disease with progressive loss of bone, leading to fragile bone. It is one of the major health issues in older adults and causes medical, social and economic impacts globally. Patients with osteoporosis have high risk of osteoporotic fractures. Low-magnitude high-frequency vibra...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-038578
更新日期:2020-12-15 00:00:00
abstract:OBJECTIVE:To investigate the length of time taken to open UK research sites in multicentre clinical trials and to identify reasons for any delays. DESIGN:A case study, recording key milestone dates from the time a site receives ethical approval through to opening to recruitment. Delay reasons were prospectively logged...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2014-005874
更新日期:2014-09-16 00:00:00
abstract:OBJECTIVES:Mortality rates in Scotland are higher, and health inequalities are greater, than in the rest of Western and Central Europe. There was a marked divergence during the 1980s and 1990s in the Scottish rates partly due to rises in alcohol-related and drug-related deaths, suicide and deaths by assault. This study...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2019-030064
更新日期:2020-02-09 00:00:00
abstract:OBJECTIVES:Given many countries' ageing populations, policymakers must consider how to mitigate or reduce health problems associated with old age, within budgetary constraints. Evidence of use of digital technology in delaying the onset of illness and reducing healthcare service use is mixed, with no clear consensus as...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2017-015839
更新日期:2017-07-21 00:00:00
abstract:PURPOSE:The ChicagO Multiethnic Prevention and Surveillance Study or 'COMPASS' is a population-based cohort study with a goal to examine the risk and determinants of cancer and chronic disease. COMPASS aims to address factors causing and/or exacerbating health disparities using a precision health approach by recruiting...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-038481
更新日期:2020-09-16 00:00:00
abstract:OBJECTIVES:To calculate the prevalence of disabling chronic pain (DCP) and to offer a more representative and accurate estimation by applying different calibration techniques. SETTINGS:2011 Andalusian Health Survey, a cross-sectional population survey based on face-to-face home interviews. PARTICIPANTS:6507 people ag...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2016-014033
更新日期:2017-01-30 00:00:00
abstract:INTRODUCTION:Endometriosis is a common gynaecological disease characterised by pain and subfertility. Randomised controlled trials evaluating treatments for endometriosis have reported many different outcomes and outcome measures. This variation restricts effective data synthesis limiting the usefulness of research to ...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2016-013998
更新日期:2016-12-21 00:00:00
abstract:OBJECTIVE:To explore the perspectives of primary healthcare (PHC) professionals providing care to refugees through mainstream general practice. DESIGN:Qualitative exploratory design with semistructured interviews subjected to inductive thematic analysis. SETTING AND PARTICIPANTS:Nine general practices enrolled in the...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2019-034323
更新日期:2019-12-31 00:00:00
abstract:INTRODUCTION:Although the colorectal cancer (CRC) mortality rate has significantly improved over the past several decades, many patients will have a recurrence following curative treatment. Despite this high risk of recurrence, adherence to CRC surveillance testing guidelines is poor which increases cancer-related morb...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-022393
更新日期:2018-04-28 00:00:00
abstract:OBJECTIVE:The association between obesity and disability may differ between high-income and low-income/middle-income countries but there are no studies comparing this association between these settings. The aim of the study was to assess this association in nine countries using nationally-representative data from the C...
journal_title:BMJ open
pub_type: 杂志文章,多中心研究
doi:10.1136/bmjopen-2014-007313
更新日期:2015-04-02 00:00:00
abstract:OBJECTIVES:Evidence comparing the effectiveness of surgical and conservative treatment of symptomatic lumbar disc herniation is controversial. We sought to compare short-term and long-term effectiveness of surgical and conservative treatment in sciatica symptom severity and quality of life in patients with lumbar disc ...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2016-012938
更新日期:2016-12-21 00:00:00
abstract:OBJECTIVES:Complementary and alternative medicine (CAM) is frequently used in Western countries within general medicine and internal medicine. Information on the use in orthopaedic and trauma surgery is widely lacking. The aim of this study was to investigate usage and needs regarding CAM for these patients. DESIGN:Pr...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-037192
更新日期:2020-09-06 00:00:00
abstract:OBJECTIVES:Social interaction may be particularly important for people with chronic health conditions, due to the numerous benefits to an individual's health. This paper aims to determine if labour force participation is a factor that influences individuals with chronic health conditions partaking in social or cultural...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2012-002054
更新日期:2013-01-30 00:00:00
abstract:INTRODUCTION:The first-line recommended treatment for patients with intermittent claudication (IC) is a supervised exercise programme (SEP), which includes a minimum of 2-hours of exercise per week over a 12-week period. However, provision, uptake and adherence rates for these SEP programmes are poor, with time constra...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-038825
更新日期:2020-07-06 00:00:00
abstract:OBJECTIVES:The clinical course and prognosis of follicular lymphoma (FL) are diverse and associated with the patient's immune response. We investigated the lymphocyte-to-monocyte ratio (LMR) and neutrophil-to-lymphocyte ratio (NLR) as prognostic factors in patients with FL, including those receiving radiotherapy. DESI...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2017-017904
更新日期:2017-11-03 00:00:00
abstract:OBJECTIVES:To explore the association of dietary behaviour factors on obesity among city, township and rural area adults. SETTING:A stratified cluster sampling technique was employed in the present cross-sectional study. On the basis of socioeconomic characteristics, two cities, two townships and two residential villa...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2015-008417
更新日期:2015-07-15 00:00:00
abstract:INTRODUCTION:The mainstay treatment for reducing the symptoms of angina and long-term risk of heart attacks in patients with heart disease is stent implantation in the diseased coronary artery. While this procedure has revolutionised treatment, the incidence of secondary events remains a concern. These repeat events ar...
journal_title:BMJ open
pub_type: 杂志文章,随机对照试验
doi:10.1136/bmjopen-2016-012728
更新日期:2016-12-20 00:00:00
abstract:INTRODUCTION:Clinical depression is a substantial problem among adolescents, increasing significantly at about age 15 years. It causes impairment in social, academic and familial relationships, as well as ongoing cognitive and emotional difficulties for the individual. A study in Iceland demonstrated that a cognitive-b...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-040374
更新日期:2021-01-22 00:00:00
abstract:OBJECTIVES:To investigate the impact of first eye and second eye cataract surgery on the level of physical activity undertaken by older adults with bilateral cataract. DESIGN:Prospective cohort study. SETTING:Three public ophthalmology clinics in Western Australia. PARTICIPANTS:Fifty-five older adults with bilateral...
journal_title:BMJ open
pub_type: 杂志文章,多中心研究
doi:10.1136/bmjopen-2018-024491
更新日期:2019-03-20 00:00:00
abstract:OBJECTIVES:We investigated the clinical characteristics of patients with stroke recurrence in the first year after cardioembolic stroke, and determined the predictors associated with recurrence. DESIGN:A prospective cohort study. SETTING:Multicentre study at the Fukuoka prefecture in Japan. PARTICIPANTS:We enroled 2...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2013-003678
更新日期:2013-11-14 00:00:00
abstract:OBJECTIVES:Medical image analysis practices face challenges that can potentially be addressed with algorithm-based segmentation tools. In this study, we map the field of automatic MR brain lesion segmentation to understand the clinical applicability of prevalent methods and study designs, as well as challenges and limi...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-042660
更新日期:2021-01-29 00:00:00
abstract:INTRODUCTION:The Bristol Stool Form Scale (BSS) which consists of 7 photographs of different stool forms allows assessment of stool consistency (scale 1 for hard lumps to scale 7 for watery stools), in an objective manner in adults. The BSS is also sometimes used to characterise the stools of infants and young children...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2016-014620
更新日期:2017-03-29 00:00:00
abstract:INTRODUCTION:Chronic subdural haematomas (CSDHs) are one of the most common neurosurgical conditions. The goal of surgery is to alleviate symptoms and minimise the risk of symptomatic recurrences. In the past, reoperation rates as high as 20%-30% were described for CSDH recurrences. However, following the introduction ...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2020-038275
更新日期:2020-06-21 00:00:00
abstract:OBJECTIVE:Providing services to rural dwelling minority cultural groups with serious chronic disease is challenging due to access to care and cultural differences. This study aimed to describe service providers' perspectives on health services delivery for Aboriginal people receiving haemodialysis for end-stage kidney ...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2013-003581
更新日期:2013-10-23 00:00:00
abstract:OBJECTIVES:Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) emergence is a major public health concern. This study was aimed at assessing risk factors for persistently carrying MRSA in veal calf farmers and their family members. We also evaluate the dynamics of MRSA environmental load during t...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2013-003272
更新日期:2013-09-19 00:00:00
abstract:OBJECTIVES:To examine the effect on estimated levels of health conditions produced from large-scale surveys, when either list-wise respondent deletion or standard demographic item-level imputation is employed. To assess the degree to which further bias reduction results from the inclusion of correlated ancillary variab...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2011-000696
更新日期:2012-07-12 00:00:00
abstract:OBJECTIVES:Low serum amylase (LSA) was reported to be associated with obesity, metabolic syndrome (MetS) and diabetes. However, it is unknown as to whether LSA is associated with non-alcoholic fatty liver disease (NAFLD), a hepatic manifestation of MetS and insulin resistance. Therefore, we performed a clinical epidemi...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2012-002235
更新日期:2013-01-03 00:00:00
abstract:OBJECTIVES:Use of the term 'patient' has been recently debated, compared with alternatives including 'consumer' and 'client'. This scoping study aimed to provide an integrated view of preferred labels across healthcare contexts and countries to clarify labelling preferences of individuals accessing healthcare. DESIGN:...
journal_title:BMJ open
pub_type: 杂志文章,评审
doi:10.1136/bmjopen-2018-025166
更新日期:2019-03-07 00:00:00
abstract:OBJECTIVES:Acute respiratory infections (ARIs) are a global cause of childhood morbidity. We compared temporal trends and socioeconomic disparities for ARI hospitalisations in young children across Western Australia, England and Scotland. DESIGN:Retrospective population-based cohort studies using linked birth, death a...
journal_title:BMJ open
pub_type: 杂志文章
doi:10.1136/bmjopen-2018-028710
更新日期:2019-05-19 00:00:00