Transmit Field Bias Correction of T1w/T2w Myelin Maps

T1-weighted divided by T2-weighted (T1w/T2w) myelin maps were initially developed for neuroanatomical analyses such as identifying cortical areas, but they are increasingly used in statistical comparisons across individuals and groups with other variables of interest. Existing T1w/T2w myelin maps contain residual radiofrequency transmit field (B1+) biases, which may be correlated with these variables of interest, leading to potentially spurious results. Here we propose multiple methods for correcting these transmit field biases using either explicit measures of the transmit field or alternatively a 'pseudo-transmit' approach that is highly correlated with the transmit field. We find that the resulting corrected T1w/T2w myelin maps are both better neuroanatomical measures (e.g., for use in cross-species comparisons), and more appropriate for statistical comparisons across individuals and groups (e.g., sex, age, or body-mass-index). We recommend that investigators who use the T1w/T2w approach for mapping cortical myelin use these B1+ transmit field corrected myelin maps going forward.

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Waist Circumference and Waist-to-Height Ratio Are More Highly Correlated to Body Mass Index than to Percentage Body Fat in Young Children

Journal of the American Dietetic Association ◽

10.1016/j.jada.2009.06.116 ◽

2009 ◽

Vol 109 (9) ◽

pp. A38

Author(s):

M. Boylan ◽

D. Feng ◽

M. Chyu ◽

Y. Chin ◽

C. Esperat

Keyword(s):

Body Mass Index ◽

Waist Circumference ◽

Young Children ◽

Body Mass ◽

Body Fat ◽

Height Ratio ◽

Percentage Body Fat ◽

Waist To Height Ratio ◽

Highly Correlated

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Indeks Massa Tubuh dengan Keseimbangan Statis Pengguna Transtibial Prosthesis

Jurnal Kesehatan ◽

10.26630/jk.v8i3.630 ◽

2017 ◽

Vol 8 (3) ◽

pp. 425

Author(s):

Nur Rachmat ◽

Muhammad Syaifudin ◽

Hanifah Hanifah

Keyword(s):

Body Mass Index ◽

Body Mass ◽

Fat Mass ◽

Quantitative Research ◽

The Body ◽

Static Balance ◽

Normal Body Mass Index ◽

Cross Sectional ◽

Transtibial Prosthesis ◽

Highly Correlated

<p>The balance of a person's body is affected by the Body Mass Index. Body Mass Index is the easiest way to estimate obesity as well as to be highly correlated with body fat mass, but it is also important to identify obese patients who have a risk of medical complications. Purpose of this study was to know correlation body mass index with the static balance of transtibial prosthesis user. The study was a quantitative research with a cross-sectional design. Location research in BBRSBD Prof. Dr. Soeharso Surakarta with sample were patients with post-amputation of transtibial as many as 15 people. Analysis of data was used correlation Pearson test. There was a correlation between body mass index with the static balance of transtibial prosthesis user, the coefficient correlation of -0.646 with significant and levels of correlation moderate. The value of normal body mass index has the highest static balance than lean body mass index and fat. Mass Index of the skinny body has a moderate static balance. Obese body mass index has the lowest static balance of body mass index thin and normal. </p>

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Mature Subcutaneous and Visceral Adipocyte Concentrations of Adiponectin Are Highly Correlated in Prepubertal Children and Inversely Related to Body Mass Index Standard Deviation Score

The Journal of Clinical Endocrinology & Metabolism ◽

10.1210/jc.2005-1571 ◽

2006 ◽

Vol 91 (1) ◽

pp. 332-335 ◽

Cited By ~ 14

Author(s):

Matthew A. Sabin ◽

Jeff M. P. Holly ◽

Julian P. H. Shield ◽

Stephen J. Turner ◽

Malcolm J. Grohmann ◽

...

Keyword(s):

Body Mass Index ◽

Standard Deviation ◽

Body Mass ◽

Standard Deviation Score ◽

Prepubertal Children ◽

Deviation Score ◽

Highly Correlated

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Indeks Jisim Badan (BMI) dan Hubungannya dengan Persepsi Imej serta Kepuasan Berat Badan dalam Kalangan Remaja

Sains Humanika ◽

10.11113/sh.v9n1-5.1190 ◽

2017 ◽

Vol 9 (1-5) ◽

Author(s):

Mai Shihah Abdullah ◽

Wan Nur Syahida Wan Kamaruddin

Keyword(s):

Body Mass Index ◽

Body Image ◽

Body Weight ◽

Body Mass ◽

The Body ◽

Image Perception ◽

Normal Range ◽

Body Image Perception ◽

Weight Satisfaction ◽

Highly Correlated

This study was conducted to examine the body image perception and body weight satisfaction among teenagers in relation to their Body Mass Index (BMI) trend. Two instruments were administered; the questionnaire, body image perception and the body weight satisfaction among 1200 teenagers. The body mass index (BMI) pola among of 54.41% of the teenagers fall in the normal BMI (18.5-24.9). However, there was an increasing pattern of towards overweight and obese parallel to increasing of ages. This study shows the level of accuracy of the body image perception was highly correlated to the actual BMI, r=0.77, p<0.01. Tehe relationship between body weight satisfaction and BMI is low (r=0.373). To conclude, BMI level of teenagers is at satisfactory level but there is a tendency for them to project for the body weight less than the normal range as prescribed by WHO/UNICEF (1998). Hence, a constant monitoring is indeed required to avoid issues on body weight management such as obesity and under-weight among the teenagers population.

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Comparison of lipid accumulation product and body mass index as indicators of diabetes diagnosis among 215,651 Chinese adults

PeerJ ◽

10.7717/peerj.8483 ◽

2020 ◽

Vol 8 ◽

pp. e8483

Author(s):

Tian Tian ◽

Hualian Pei ◽

Zhen Chen ◽

Gulisiya Hailili ◽

Shuxia Wang ◽

...

Keyword(s):

Body Mass Index ◽

Body Mass ◽

Lipid Accumulation ◽

Area Under The Curve ◽

Cutoff Point ◽

Diabetes Diagnosis ◽

Chinese Adults ◽

Lipid Accumulation Product ◽

Highly Correlated ◽

Fourth Quartile

Purpose We aimed to assess if lipid accumulation product (LAP) could outperform body mass index (BMI) as a marker for diabetes diagnosis. Methods We analyzed the results of a national physical examination project in Urumqi, China. This project was conducted in 442 community clinics in Urumqi from October 2016 to February 2017. Results LAP was highly correlated with diabetes. The subjects with higher amounts of LAP had a higher risk of diabetes, and the prevalence of diabetes in the fourth quartile of LAP was dramatically higher than in the first quartile (5.72% vs. 21.76%). The adjusted odds ratios (AOR) associated with diabetes in the fourth quartile of LAP was significantly higher than the AOR associated with diabetes in the first quartile, and when BMI ≥ 28 kg/m2 was compared with BMI < 28 kg/m2 (3.24 (3.11, 3.37) vs. 1.65 (1.60, 1.70)). The LAP’s area under the curve (AUC) was significantly higher than the BMI’s AUC when based on diabetes (0.655 vs. 0.604). In the normal BMI group, 34% of participants had a LAP value higher than the cutoff point found during ROC analysis. In this subgroup, we observed a significantly higher prevalence of diabetes that was similar to that of the subgroup with a BMI ≥ 28 kg/m2, and both of their LAP values were higher than the cutoff point. Conclusion When use as a tool for diabetes diagnosis, LAP performed better than BMI, implying that LAP could be a preferable anthropometry assessment.

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Relationship Between Anthropometric Attributes and Space Required to Turn from Supine to Side Lying

Proceedings of the Human Factors and Ergonomics Society Annual Meeting ◽

10.1177/1541931213601738 ◽

2017 ◽

Vol 61 (1) ◽

pp. 1022-1025

Author(s):

Neal Wiggermann

Keyword(s):

Body Mass Index ◽

Waist Circumference ◽

Body Mass ◽

Motion Capture ◽

Elevated Risk ◽

Risk Of Injury ◽

Hospital Bed ◽

Highly Correlated ◽

The Relationship ◽

Linear Regressions

When patients are placed in a bed that is too small to allow them to turn from supine to side lying, caregivers are at an elevated risk of injury because of difficulty to turn the patient and patients may experience greater discomfort and risk of pressure injuries. Currently, no guidance is available for what patient sizes are accommodated by the standard 91.4-cm (36-in) wide hospital bed, and no studies have evaluated the relationship between anthropometric attributes and space required to turn in bed. This study included 47 participants (24 female) ranging in body mass index (BMI) from 20 to 76 kg/m2. Anthropometric dimensions were measured and the envelope of space required to turn from supine to side lying was determined using motion capture. Linear regressions were performed to estimate the relationship between anthropometry and space occupied when turning. The anthropometric attributes most highly correlated to space required to turn were waist circumference (R2 = 0.91) and BMI (R2 = 0.88). These findings can be used to design products that better accommodate the needs of patients and their caregivers.

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