| TLI | thymidine labeling index; total lymphatic irradiation; trypsin-like immune activity; Tucker-Lewis in... |
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| TTI | tension-time index; time-tension index; timepto-intubation; torque-time interval; transtracheal insu... |
| LUL | Left Upper Lobe(of Lung) |
| LUQ | Left Upper Quadrant; 좌측상부 4분의 1 |
| RUQ | Right Upper Quadrant; 우측상부 4분의 1 |
| ponderal index | Cube root of body weight times 100 divided by height in cm. (05 Mar 2000) |
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| cranial index | The ratio of the maximal breadth to the maximal length of the skull, obtained by the formula: (breadth × 100)/length. (05 Mar 2000) |
| Cumulative Index Medicus | Collection of medical literature, published annually, which began in the US Army Surgeon General's office in the last century. It has been taken over by the National Library of Medicine and has evolved into a database called MEDLINE. (05 Mar 2000) |
| pressure-volume index | Method of evaluating the cerebrospinal fluid hydrodynamics. (05 Mar 2000) |
| prevalence index | <statistics> A weighted average measure of the sum of the frequency of occurrences of all species along a single transect or as calculated for a plant community by averaging the prevalence index of all sample transects through the community. (05 Mar 1998) |
| sacral index | A ratio obtained by multiplying the greatest breadth of the sacrum by 100 and dividing by the length. (05 Mar 2000) |
| health status index | Set of measurements designed to detect short-term fluctuations in health of members of a population; the measurements usually include physical function, emotional well-being, activities of daily living, feelings, etc. (05 Mar 2000) |
| height-length index | The relation of the height to the length of the skull: (height × 100)/length. Synonym: height-length index, length-height index, transversovertical index. (05 Mar 2000) |
| saturation index | An indication of the relative concentration of haemoglobin in the red blood cells, calculated as: grams of haemoglobin per 100 ml (expressed as percent of normal) ÷ haematocrit value (expressed as percent of normal) = saturation index The normal index for adults and infants is 0.97 to 1.02; in primary and secondary anaemia, the index is usually considerably less than 0.97. (05 Mar 2000) |
| Schilling's index | A method of counting blood in which the polymorphonuclear neutrophils are separated into four groups according to the number and arrangement of the nuclear masses in these cells. Synonym: Schilling's index. (05 Mar 2000) |
| heterozygosity index | Measure of the number of loci for which an individual is heterozygous. (18 Nov 1997) |
| pulsatility index | Calculation of Doppler measurements of systolic and diastolic velocities in the uterine, umbilical, or foetal circulations. (05 Mar 2000) |
| severity of illness index | Levels of severity of illness within a diagnostic group which are established by various measurement criteria. (12 Dec 1998) |
| shock index | The quotient of the cardiac rate divided by the systolic blood pressure; normally approximately 0.5, but in shock (e.g., rising pulse rate with falling blood pressure), the index may reach 1.0. (05 Mar 2000) |
| Simplified Oral Hygiene Index | An index that measures the current oral hygiene status based upon the amount of debris and calculus occurring on six representative tooth surfaces in the mouth; often used in field surveys of periodontal disease. (05 Mar 2000) |