WordNet
- (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance (同)weighting
- sports equipment used in calisthenic exercises and weightlifting; it is not attached to anything and is raised and lowered by use of the hands and arms (同)free weight, exercising weight
- an artifact that is heavy
- the vertical force exerted by a mass as a result of gravity
- the relative importance granted to something; "his opinion carries great weight"; "the progression implied an increasing weightiness of the items listed" (同)weightiness
- an oppressive feeling of heavy force; "bowed down by the weight of responsibility"
- render visible, as by means of MRI
- the general impression that something (a person or organization or product) presents to the public; "although her popular image was contrived it served to inspire music and pageantry"; "the company tried to project an altruistic image"
- an iconic mental representation; "her imagination forced images upon her too awful to contemplate" (同)mental image
- (mathematics) the set of values of the dependent variable for which a function is defined; "the image of f(x) = x^2 is the set of all non-negative real numbers if the domain of the function is the set of all real numbers" (同)range, range of a function
- adjusted to reflect value or proportion; "votes weighted according to the size of constituencies"; "a law weighted in favor of landlords"; "a weighted average"
- (medicine) obtaining pictures of the interior of the body (同)tomography
PrepTutorEJDIC
- Wisconsin
- 〈u〉『重さ』,重量,目方;体重;《a weight》(…の)重さ《+of+名》 / 〈u〉重さ(重力が物体に及ぼす力) / 〈u〉衡法(重量を示す体係) / 〈c〉重量単位 / 〈c〉(はかりの)おもり,分銅;(一般に)重いもの,おもし / 〈u〉重要性,価値 / 〈u〉《しばしば a weight》精神的な重荷,負担 / (…で)…‘に'重荷を負わせる;…‘を'圧迫する;苦しめる《+名+with+名》 / …‘を'重くする
- (鏡に映った)『像』,(レンズによる)映像 / (心に浮かぶ)『像』,心像,イメージ / (絵・彫刻などによる人・動物などの)『像』,肖像;偶像《+『of』+『名』》 / (…に)『そっくりの人』(『物』)《+『of』+『名』》 / (…の)典型;(…の)化身《+『of』+『名』》 / (直喩(ちょくゆ)・隠喩などの)比喩 / …‘の'像を描く;…‘を'思い描く
- 《補語にのみ用いて》(…に)有利な《+toward+名》
UpToDate Contents
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- 1. 体重減少がみられる患者に対するアプローチ approach to the patient with weight loss
- 2. 癌生存における食事、身体活動、および体重の役割 the roles of diet physical activity and body weight in cancer survivorship
- 3. 6ヶ月以上の乳幼児、小児、および思春期における体重減少の評価 evaluation of weight loss in infants over six months of age children and adolescents
- 4. 妊娠中の体重増加／減少 weight gain and loss in pregnancy
- 5. 炎症性腸疾患を有する小児における成長障害および体重増加不良 growth failure and poor weight gain in children with inflammatory bowel disease
English Journal
- Calibrated FMRI.
- Hoge RD.AbstractFunctional magnetic resonance imaging with blood oxygenation level-dependent (BOLD) contrast has had a tremendous influence on human neuroscience in the last twenty years, providing a non-invasive means of mapping human brain function with often exquisite sensitivity and detail. However the BOLD method remains a largely qualitative approach. While the same can be said of anatomic MRI techniques, whose clinical and research impact has not been diminished in the slightest by the lack of a quantitative interpretation of their image intensity, the quantitative expression of BOLD responses as a percent of the baseline T2*- weighted signal has been viewed as necessary since the earliest days of fMRI. Calibrated MRI attempts to dissociate changes in oxygen metabolism from changes in blood flow and volume, the latter three quantities contributing jointly to determine the physiologically ambiguous percent BOLD change. This dissociation is typically performed using a "calibration" procedure in which subjects inhale a gas mixture containing small amounts of carbon dioxide or enriched oxygen to produce changes in blood flow and BOLD signal which can be measured under well-defined hemodynamic conditions. The outcome is a calibration parameter M which can then be substituted into an expression providing the fractional change in oxygen metabolism given changes in blood flow and BOLD signal during a task. The latest generation of calibrated MRI methods goes beyond fractional changes to provide absolute quantification of resting-state oxygen consumption in micromolar units, in addition to absolute measures of evoked metabolic response. This review discusses the history, challenges, and advances in calibrated MRI, from the personal perspective of the author.
- NeuroImage.Neuroimage.2012 Aug 15;62(2):930-7. Epub 2012 Feb 17.
- Functional magnetic resonance imaging with blood oxygenation level-dependent (BOLD) contrast has had a tremendous influence on human neuroscience in the last twenty years, providing a non-invasive means of mapping human brain function with often exquisite sensitivity and detail. However the BOLD met
- PMID 22369993
- FreeSurfer.
- Fischl B.AbstractFreeSurfer is a suite of tools for the analysis of neuroimaging data that provides an array of algorithms to quantify the functional, connectional and structural properties of the human brain. It has evolved from a package primarily aimed at generating surface representations of the cerebral cortex into one that automatically creates models of most macroscopically visible structures in the human brain given any reasonable T1-weighted input image. It is freely available, runs on a wide variety of hardware and software platforms, and is open source.
- NeuroImage.Neuroimage.2012 Aug 15;62(2):774-81. Epub 2012 Jan 10.
- FreeSurfer is a suite of tools for the analysis of neuroimaging data that provides an array of algorithms to quantify the functional, connectional and structural properties of the human brain. It has evolved from a package primarily aimed at generating surface representations of the cerebral cortex
- PMID 22248573
Japanese Journal
- 急性期脳梗塞のMRI拡散強調画像における濃度ヒストグラム解析法を用いた表示条件自動設定法
- 下川 賢二,長島 宏幸,小倉 敏裕,白石 明久,五十嵐 均,土井 邦雄
- 群馬県立県民健康科学大学紀要 6, 33-40, 2011-03
- 目的:本研究では,濃度ヒストグラム解析法を用いて,急性期脳梗塞の脳MRI拡散強調画像(DWI)の表示条件を自動設定する方法を考案した.方法:本研究では,虚血後6時間以内に撮像された60症例のDWIを利用した.本手法は,まず,別の1症例に対し,b0画像上の視床の信号強度を利用してDWIの表示条件を設定させる既存方法を適用し,線形濃度変換法を用いて表示条件を8bitsに変換した.次に,濃度ヒストグラム …
- NAID 110008148672
- 画像・脳波検査 (特集 急性脳炎・脳症の概念) -- (急性脳炎・脳症の検査・診断)
- 高梨 潤一
- 日本臨床 69(3), 490-498, 2011-03
- NAID 40018729431
Related Links
- T1 weighted image (also referred to as T1WI or "spin-lattice" relaxation time) is one of the basic pulse sequences in MRI and demonstrates differences in the T1 relaxation times of tissues.A T1WI relies upon the longitudinal relaxation ...
- T2 weighted image (also referred to as T2WI "T2 weighted image") is one of the basic pulse sequences in MRI. The sequence weighting highlights differences in the T2 relaxation time of tissues.A T2WI relies upon the transverse ...
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★リンクテーブル★
| リンク元 | 「high-contrast image」「WI」 |
| 拡張検索 | 「proton density weighted image」 |
| 関連記事 | 「imaging」「image」「weighted」「weight」 |
「high-contrast image」
「WI」
「proton density weighted image」
「imaging」
- n.
- 関
- diagnostic imaging、-graphy、image processing、imaging study
「image」
- n.
- 関
- picture
「weighted」
- adj.
- 重みつきの、加重した
「weight」
- n.