Body height estimation based on magnetic resonance imaging measurements of the second cervical vertebra in the Turkish population

2020 ◽  
pp. 1-12
Author(s):  
Esra Meltem Kayahan Ulu ◽  
Bahadır Öztürk ◽  
Köksal Atalay ◽  
Mine Akren Özkazanç ◽  
Özlem Terzi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Body Height ◽  
Cervical Vertebra ◽  
Turkish Population ◽  
Resonance Imaging ◽  
Height Estimation

scholarly journals Calcaneus height is a key morphological factor of sprint performance in sprinters

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Tadashi Suga ◽  
Msafumi Terada ◽  
Takahiro Tanaka ◽  
Yuto Miyake ◽  
Hiromasa Ueno ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Body Height ◽  
Sprint Performance ◽  
Relative Height ◽  
Arch Height ◽  
Resonance Imaging ◽  
Foot Length ◽  
Foot Arch ◽  
Foot Morphology

Abstract This study examined the relationships between the foot bone morphologies and sprint performance in sprinters. Foot images in 56 male sprinters obtained using magnetic resonance imaging. The relative lengths of the forefoot bones of the big and second toes, which were calculated as total lengths of the forefoot bones for each toe normalized to the foot length, correlated significantly with personal best 100-m sprint time (r =  − 0.293 and − 0.459, both Ps < 0.05). The relative lengths of the rearfoot talus and calcaneus normalized to the foot length also correlated significantly with the sprint performance (r =  − 0.378 and − 0.496, both Ps < 0.05). Furthermore, the relative height of the calcaneus, but not the talus, normalized to body height correlated significantly with sprint performance (r =  − 0.690, P < 0.001). Additionally, the relative calcaneus height correlated significantly with the foot arch height index (r = 0.420, P = 0.001), and the foot arch height index correlated significantly with sprint performance (r =  − 0.517, P < 0.001). These findings suggest that the taller calcaneus may be a key morphological factor for achieving superior sprint performance, potentially via modeling the longer forefoot and rearfoot bones and functional foot morphology in sprinters.

scholarly journals Measurement of Femoral Torsion by Ultrasound and Magnetic Resonance Imaging: Concurrent Validity

2010 ◽  
Vol 90 (11) ◽  
pp. 1641-1648 ◽  
Author(s):  
Kornelia Kulig ◽  
Kellee Harper-Hanigan ◽  
Richard B. Souza ◽  
Christopher M. Powers
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Concurrent Validity ◽  
Intraclass Correlation ◽  
Body Height ◽  
Reference Method ◽  
Repeated Measurements ◽  
Resonance Imaging ◽  
Femoral Torsion

Background Abnormal femoral torsion has been linked to osteoarthritis in the knee as well as to patellofemoral pain. Inexpensive, valid, and reliable methods for assessing femoral torsion are needed. Ultrasound (US) is a noninvasive and clinically accessible method that can be used for the assessment of bone morphology, such as femoral torsion. Objective The objective of this study was to determine the concurrent validity of US for the measurement of femoral torsion with a reference method, magnetic resonance imaging (MRI). Design Repeated measurements of femoral torsion were obtained with US and MRI in a laboratory setting. Methods Twenty-eight people (4 men, 24 women; mean age=26.8 years [SD=4.0 years], mean body height=170.3 cm [SD=8.0 cm], mean body weight=64.7 kg [SD=9.8 kg]) participated in this study. T1-weighted axial oblique images of the femoral neck and epicondylar axis were acquired with a 1.5-T magnetic resonance system. Ultrasonographic measurements then were obtained by a tilting technique with a linear transducer that was 4.5 cm long and operated at a frequency of 10 MHz and a depth of 5 cm. Results The average angles of anteversion measured by US and by MRI were 20.7 degrees (SD=11.0) and 19 degrees (SD=11.3), respectively. The reliability, reported as the intraclass correlation coefficient [ICC (2,1)], of repeated measurements of in vivo femoral torsion by US was .98. The reliability [ICC (2,1)] of magnetic resonance image analysis was .96. The standard error of the measurement for US was 2.2 degrees, and that for MRI was 1.9 degrees. The concurrent validity of US with MRI (R2) was .93 (r=.96). Limitations Obtaining measurements by US requires appropriate training before data collection. Conclusions Ultrasound measurement of femoral torsion has high concurrent validity with in vivo MRI and may be used when an assessment of bony morphology is needed but MRI is not available.

scholarly journals The role of B-mode ultrasonography in the musculoskeletal anatomical evaluation of the cervical region of the dog spine

2014 ◽  
Vol 34 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Cibely G. Sarto ◽  
Maria Cristina F. N. S. Hage ◽  
Luciana D. Guimarães ◽  
Robson F. Giglio ◽  
Andréa P. B. Borges ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Ultrasound Examination ◽  
Cervical Vertebrae ◽  
Cervical Vertebra ◽  
Cervical Region ◽  
Resonance Imaging ◽  
Musculoskeletal Anatomy

This study characterized the normal musculoskeletal anatomy of the cervical segment of the spine of dogs by means of B-mode ultrasonography. The objective was to establish the role of B-mode ultrasonography for the anatomical evaluation of the cervical spine segment in dogs, by comparing the ultrasonographic findings with images by computed tomography and magnetic resonance imaging. The ultrasound examination, in transverse and median sagittal sections, allowed to identify a part of the epaxial cervical musculature, the bone surface of the cervical vertebrae and parts of the spinal cord through restricted areas with natural acoustic windows, such as between the atlanto-occipital joint, axis and atlas, and axis and the third cervical vertebra. The images, on transverse and sagittal planes, by low-field magnetic resonance imaging, were superior for the anatomical identification of the structures, due to higher contrast between the different tissues in this modality. Computed tomography showed superiority for bone detailing when compared with ultrasonography. As for magnetic resonance imaging, in addition to the muscles and cervical vertebrae, it is possible to identify the cerebrospinal fluid and differentiate between the nucleus pulposus and annulus fibrosus of the intervertebral discs. Although not the scope of this study, with knowledge of the ultrasonographic anatomy of this region, it is believed that some lesions can be identified, yet in a limited manner, when compared with the information obtained mainly with magnetic resonance imaging. The ultrasound examination presented lower morphology diagnostic value compared with the other modalities.

scholarly journals Cardiac Hypertrophy Is Associated With Advanced Brain Aging in the General Population

2021 ◽  
Vol 10 (17) ◽  
Author(s):  
Stefan Frenzel ◽  
Katharina Wittfeld ◽  
Robin Bülow ◽  
Henry Völzke ◽  
Nele Friedrich ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
General Population ◽  
Brain Aging ◽  
Interventricular Septum ◽  
Body Height ◽  
Posterior Wall ◽  
Population Based ◽  
Intracranial Volume ◽  
Resonance Imaging

Background Hypertrophy of the left ventricle (LV) has recently been associated with adverse changes of brain structure in older adults, notably increased burden of white matter hyperintensities (WMHs). Whether greater LV size or mass is also related to WMH burden in middle‐aged adults is currently unclear. In addition, its relation with alterations in cortical thickness (CT) has not been studied to date. Methods and Results Data from 1602 participants of the population‐based SHIP (Study of Health in Pomerania) with LV ejection fraction >40% and no history of myocardial infarction were included (aged 21–82 years; median age, 49 years; 53% women). Participants underwent both echocardiography and magnetic resonance imaging of the head. Imaging markers of brain aging (ie, CT and WMH volume) were determined from magnetic resonance imaging scans. LV mass and diameter were associated with lower global CT and greater WMH volume, while adjusting for age, sex, body height, fat‐free body mass, and intracranial volume. Moreover, thicknesses of the interventricular septum and posterior wall were also associated with lower global CT. These associations could not be explained by cardiovascular risk factors (including hypertension), inflammatory markers, or sociodemographic factors. Regional analyses showed distinct spatial patterns of lower CT in association with LV diameter and posterior wall thickness. Conclusions LV diameter and mass are associated with lower global and regional CT as well as greater WMH burden in the general population. These findings highlight the brain structural underpinnings of the associations of LV hypertrophy with cognitive decline and dementia.

scholarly journals Obesity and pituitary gland volume – a correlation study using three-dimensional magnetic resonance imaging

2020 ◽  
Vol 33 (5) ◽  
pp. 400-409
Author(s):  
Uli Fehrenbach ◽  
Anas Jadan ◽  
Timo A Auer ◽  
Katharina Kreutz ◽  
Dominik Geisel ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Body Mass Index ◽  
Magnetic Resonance ◽  
Pituitary Gland ◽  
Body Mass ◽  
Body Height ◽  
Three Dimensional ◽  
Normal Weight ◽  
Resonance Imaging ◽  
Gland Volume

Purpose Obesity has become a major health problem and is associated with endocrine disorders and a disturbed hypothalamic-pituitary axis. The purpose of this study was to correlate pituitary gland volume determined by routine magnetic resonance imaging with patient characteristics, in particular body mass index and obesity. Material and methods A total of 144 ‘healthy’ patients with normal findings in cerebral magnetic resonance imaging were retrospectively included. Pituitary gland volume was measured in postcontrast three-dimensional T1-weighted sequences. A polygonal three-dimensional region of interest covering the whole pituitary gland was assessed manually. Physical characteristics (gender, age, body height and body mass index) were correlated with pituitary gland volume. Multiple subgroup and regression analyses were performed. Results Pituitary gland volumes were significantly larger in females than in males ( p<0.001) and young individuals (<35 years) versus middle-aged patients (35–47 years) ( p=0.042). Obese patients (body mass index ≥30) had significantly larger pituitary gland volumes than overweight (25<body mass index<30; p=0.011) and normal-weight (body mass index <25; p=0.005) patients. In males, pituitary gland volumes of body mass index subgroups showed significant differences ( p=0.038). Obese males had larger pituitary gland volumes than overweight patients ( p=0.066) and significantly larger volumes than normal-weight ( p=0.023) patients. Obese females also had larger pituitary gland volumes but without statistical significance ( p>0.05). Regression analysis showed that increased pituitary gland volume is associated with higher body mass index independent from gender, age and body height. Conclusion Pituitary gland volume is increased in obese individuals and a high body mass index can be seen as an independent predictor of increased pituitary gland volume. Therefore, gland enlargement might be an imaging indicator of dysfunction in the hypothalamus-pituitary axis. Besides gender and age, body mass index should be considered by radiologists when diagnosing abnormal changes in pituitary gland volume.

scholarly journals Normalized Indices Derived from Visceral Adipose Mass Assessed by Magnetic Resonance Imaging and Their Correlation with Markers for Insulin Resistance and Prediabetes

Nutrients ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 2064
Author(s):  
Jürgen Machann ◽  
Norbert Stefan ◽  
Robert Wagner ◽  
Andreas Fritsche ◽  
Jimmy D. Bell ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Insulin Resistance ◽  
Adipose Tissue ◽  
Insulin Sensitivity ◽  
Magnetic Resonance ◽  
Body Height ◽  
Resonance Imaging ◽  
Metabolic Characteristics ◽  
Visceral Adipose ◽  
Hba1c Levels

Visceral adipose tissue (VAT) plays an important role in the pathogenesis of insulin resistance (IR), prediabetes and type 2 diabetes. However, VAT volume alone might not be the best marker for insulin resistance and prediabetes or diabetes, as a given VAT volume may impact differently on these metabolic traits based on body height, gender, age and ethnicity. In a cohort of 1295 subjects from the Tübingen Diabetes Family Study (TDFS) and in 9978 subjects from the UK Biobank (UKBB) undergoing magnetic resonance imaging for quantification of VAT volume, total adipose tissue (TAT) in the TDFS, total abdominal adipose tissue (TAAT) in the UKBB, and total lean tissue (TLT), VAT volume and several VAT-indices were investigated for their relationships with insulin resistance and glycemic traits. VAT-related indices were calculated by correcting for body height (VAT/m:VAT/body height; VAT/m2:VAT/(body height)2, and VAT/m3:VAT/(body height)3), TAT (%VAT), TLT (VAT/TLT) and weight (VAT/WEI), with closest equivalents used within the UKBB dataset. Prognostic values of VAT and VAT-related indices for insulin sensitivity, HbA1c levels and prediabetes/diabetes were analyzed for males and females. Males had higher VAT volume and VAT-related indices than females in both cohorts (p < 0.0001) and VAT volume has shown to be a stronger determinant for insulin sensitivity than anthropometric variables. Among the parameters uncorrected VAT and derived indices, VAT/m3 most strongly correlated negatively with insulin sensitivity and positively with HbA1c levels and prediabetes/diabetes in the TDFS (R2 = 0.375/0.305 for females/males for insulin sensitivity, 0.178/0.148 for HbA1c levels vs., e.g., 0.355/0.293 and 0.144/0.133 for VAT, respectively) and positively with HbA1c (R2 = 0.046/0.042) in the UKBB for females and males. Furthermore, VAT/m3 was found to be a significantly better determinant of insulin resistance or prediabetes than uncorrected VAT volume (p < 0.001/0.019 for females/males regarding insulin sensitivity, p < 0.001/< 0.001 for females/males regarding HbA1c). Evaluation of several indices derived from VAT volume identified VAT/m3 to correlate most strongly with insulin sensitivity and glucose metabolism. Thus, VAT/m3 appears to provide better indications of metabolic characteristics (insulin sensitivity and pre-diabetes/diabetes) than VAT volume alone.

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