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| CFVS | cerebrospinal fluid flow void sign |
|---|---|
| CBF | capillary blood flow; cerebral blood flow; ciliary beat frequency; coronary blood flow; cortical blo... |
| HBF | hand blood flow; hemispheric blood flow; hemoglobinuric bilious fever; hepatic blood flow; hypothala... |
| CL | VOID clean voided specimen [urine] |
| EHBF | estimated hepatic blood flow; exercise hyperemia blood flow; extrahepatic blood flow |
| FVU | First void urine |
|---|---|
| PVR | post void residual |
| PVR | post-void residual urine volume |
| PVR | post-void residual volume |
| CBF | 1--Cerebral blood flow |
| flow void | In magnetic resonance imaging, the absence of signal from blood whose activated protons leave a region before their magnetization is measured. See: signal void. (05 Mar 2000) |
|---|
| void | 1. Containing nothing; empty; vacant; not occupied; not filled. "The earth was without form, and void." (Gen. I. 2) "I 'll get me to a place more void." (Shak) "I 'll chain him in my study, that, at void hours, I may run over the story of his country." (Massinger) 2. Having no incumbent; unoccupied; said of offices and the like. "Divers great offices that had been long void." (Camden) 3. Being without; destitute; free; wanting; devoid; as, void of learning, or of common use. "A conscience void of offense toward God." (Acts xxiv. 16) "He that is void of wisdom despiseth his neighbor." (Prov. Xi. 12) 4. Not producing any effect; ineffectual; vain. "[My word] shall not return to me void, but it shall accomplish that which I please." (Isa. Lv. 11) "I will make void the counsel of Judah." (Jer. Xix. 7) 5. Containing no immaterial quality; destitute of mind or soul. "Idol, void and vain." 6. Of no legal force or effect, incapable of confirmation or ratification; null. Cf. Voidable. <physics> Void space, a vacuum. Synonym: Empty, vacant, devoid, wanting, unfurnished, unsupplied, unoccupied. Origin: OE. Voide, OF. Voit, voide, vuit, vuide, F. Vide, fr. (assumed) LL. Vocitus, fr. L. Vocare, an old form of vacare to be empty, or a kindred word. Cf. Vacant, Avoid. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| void metal composite | A porous metal structure that enables tissue growth within the openings to establish long-term attachment between prosthesis and tissue. (05 Mar 2000) |
| signal void | In magnetic resonance imaging, a region emitting no radiofrequency signal, either because there are no activated protons in the region (such as flowing blood) or because a different element predominates, particularly calcium. (05 Mar 2000) |
| average flow rate | <physiology> The flow rate determined by dividing the total volume passed in a time period divided by the time period, usually quoted in mls per minute. (05 Mar 2000) |
| Bingham flow | The flow characteristics exhibited by a Bingham plastic. (05 Mar 2000) |
| blood flow velocity | A value equal to the total volume flow divided by the cross-sectional area of the vascular bed. (12 Dec 1998) |
| gene flow | The movement of genes from one population to another viainterbreeding. (09 Oct 1997) |
| maximal expiratory flow rate | <chest medicine, physiology> Measurement of rate of airflow during the first liter expired after the first 200 ml have been exhausted during a forced vital capacity determination. Common abbreviations are MEFR, FEF 202-1200, and fef 0.2-1.2. Acronym: MEFR (21 Jun 2000) |
| maximal expiratory flow-volume curve | <chest medicine> Curves depicting maximal expiratory flow in liters/second at each point of lung inflation (expressed in liters or percentage of forced vital capacity) during a forced vital capacity determination. Common abbreviation is mefv. (12 Dec 1998) |
| maximal midexpiratory flow rate | Measurement of rate of airflow over the middle half of a forced vital capacity determination (from the 25 percent level to the 75 percent level). Common abbreviations are mmfr and fef 25%-75%. (12 Dec 1998) |
| renal blood flow, effective | The amount of blood flowing to the parts of the kidney that are involved with the production of constituents of urine. It is that portion of the total renal blood flow that perfuses functional renal tissue (e.g., the glomeruli). It should be differentiated from renal plasma flow, effective which is based on the amount of plasma rather than on total renal blood. (12 Dec 1998) |
| renal plasma flow | <physiology> The amount of plasma that perfuses the kidneys per unit time, approximately 10% greater than effective renal plasma flow. It should be differentiated from the renal blood flow which refers to the total volume of blood flowing through the renal vasculature, while the renal plasma flow refers to the rate of plasma flow. (12 Dec 1998) |
| peak expiratory flow | The maximum flow at the outset of forced expiration, which is reduced in proportion to the severity of airway obstruction, as in asthma. (05 Mar 2000) |
| peak expiratory flow rate | Measurement of the maximum rate of airflow attained during a forced vital capacity determination. Common abbreviations are pefr and pfr. (12 Dec 1998) |
| peak flow | <chest medicine, physiology> The maximum flow rate of air breathed out during forced expiration. (15 Nov 1997) |
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