| 释义 |
scan
scan S0119600 (skăn)v. scanned, scan·ning, scans v.tr.1. a. To look at carefully or thoroughly, especially in search of something; examine: The sailor scanned the horizon for signs of land.b. To look over quickly or read hastily: I scanned the newspaper while eating breakfast.2. Computers To search (stored data) automatically for specific data.3. a. To direct a finely focused beam of light or electrons in a systematic pattern over (a surface) in order to reproduce or sense and subsequently transmit an image.b. To direct a radar beam in a systematic pattern across (a sector of sky) in search of a target.4. To encode (text, for example) in digital format by means of an optical scanner.5. a. Medicine To direct x-rays or other energy at (a body or body part) in order to produce an image, as with a CT scanner.b. To pass (luggage, for example) through a detector at a security checkpoint in order to detect weapons or banned materials.6. To analyze (verse) into metrical patterns.v.intr.1. To analyze verse into metrical patterns.2. To conform to a metrical pattern: Does this line scan?n.1. The act or an instance of scanning: my scan of the files.2. Medicine a. The action or process of scanning a body or body part.b. An image produced by scanning.
[Middle English scanden, scannen, to scan a verse, from Latin scandere, to climb, scan a verse; see skand- in Indo-European roots.]
scan′na·ble adj.scan (skæn) vb, scans, scanning or scanned1. (tr) to scrutinize minutely2. (tr) to glance over quickly3. (Poetry) (tr) prosody to read or analyse (verse) according to the rules of metre and versification4. (Poetry) (intr) prosody to conform to the rules of metre and versification5. (Electronics) (tr) electronics to move a beam of light, electrons, etc, in a predetermined pattern over (a surface or region) to obtain information, esp either to sense and transmit or to reproduce a television image6. (Computer Science) (tr) to examine data stored on (magnetic tape, etc), usually in order to retrieve information7. (Telecommunications) to examine or search (a prescribed region) by systematically varying the direction of a radar or sonar beam8. (General Physics) physics to examine or produce or be examined or produced by a continuous charge of some variable: to scan a spectrum. 9. (Medicine) med to obtain an image of (a part of the body) by means of a scannern10. the act or an instance of scanning11. (Medicine) med a. the examination of a part of the body by means of a scanner: a brain scan; ultrasound scan. b. the image produced by a scanner[C14: from Late Latin scandere to scan (verse), from Latin: to climb] ˈscannable adjscan (skæn)
v. scanned, scan•ning,
n. v.t. 1. to examine the particulars of minutely; scrutinize. 2. to glance at or read hastily: to scan a page. 3. to observe repeatedly or sweepingly: to scan the horizon. 4. to analyze (verse) for its prosodic or metrical structure. 5. to read (data) for use by a computer or computerized device, esp. using an optical scanner. 6. to traverse (a surface) with a beam of electrons in order to reproduce or transmit a picture. 7. to traverse (a region) with a beam from a radar transmitter. 8. to examine (a body or body part) with a scanner. v.i. 9. to examine the meter of verse. 10. (of verse) to conform to the rules of meter. n. 11. an act or instance of scanning. 12. a. an examination of the body or a body part using a scanner. b. the image or display so obtained. [1350–1400; < Late Latin scandere to scan verse, Latin: to climb] scan′na•ble, adj. Scan. or Scand., 1. Scandinavia. 2. Scandinavian. scan1. The path periodically followed by a radiation beam.
2. In electronic intelligence, the motion of an electronic beam through space looking for a target. Scanning is produced by the motion of the antenna or by lobe switching. See also electronic intelligence.scan
Past participle: scanned
Gerund: scanning
| Present |
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| I scan | | you scan | | he/she/it scans | | we scan | | you scan | | they scan |
| Preterite |
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| I scanned | | you scanned | | he/she/it scanned | | we scanned | | you scanned | | they scanned |
| Present Continuous |
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| I am scanning | | you are scanning | | he/she/it is scanning | | we are scanning | | you are scanning | | they are scanning |
| Present Perfect |
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| I have scanned | | you have scanned | | he/she/it has scanned | | we have scanned | | you have scanned | | they have scanned |
| Past Continuous |
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| I was scanning | | you were scanning | | he/she/it was scanning | | we were scanning | | you were scanning | | they were scanning |
| Past Perfect |
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| I had scanned | | you had scanned | | he/she/it had scanned | | we had scanned | | you had scanned | | they had scanned |
| Future |
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| I will scan | | you will scan | | he/she/it will scan | | we will scan | | you will scan | | they will scan |
| Future Perfect |
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| I will have scanned | | you will have scanned | | he/she/it will have scanned | | we will have scanned | | you will have scanned | | they will have scanned |
| Future Continuous |
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| I will be scanning | | you will be scanning | | he/she/it will be scanning | | we will be scanning | | you will be scanning | | they will be scanning |
| Present Perfect Continuous |
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| I have been scanning | | you have been scanning | | he/she/it has been scanning | | we have been scanning | | you have been scanning | | they have been scanning |
| Future Perfect Continuous |
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| I will have been scanning | | you will have been scanning | | he/she/it will have been scanning | | we will have been scanning | | you will have been scanning | | they will have been scanning |
| Past Perfect Continuous |
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| I had been scanning | | you had been scanning | | he/she/it had been scanning | | we had been scanning | | you had been scanning | | they had been scanning |
| Conditional |
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| I would scan | | you would scan | | he/she/it would scan | | we would scan | | you would scan | | they would scan |
| Past Conditional |
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| I would have scanned | | you would have scanned | | he/she/it would have scanned | | we would have scanned | | you would have scanned | | they would have scanned |
Thesaurus| Noun | 1. |  scan - the act of scanning; systematic examination of a prescribed region; "he made a thorough scan of the beach with his binoculars"examination, scrutiny - the act of examining something closely (as for mistakes) | | 2. |  scan - an image produced by scanning; "he analyzed the brain scan"; "you could see the tumor in the CAT scan"CAT scanikon, picture, icon, image - a visual representation (of an object or scene or person or abstraction) produced on a surface; "they showed us the pictures of their wedding"; "a movie is a series of images projected so rapidly that the eye integrates them" | | Verb | 1. | scan - examine minutely or intensely; "the surgeon scanned the X-ray"examine, see - observe, check out, and look over carefully or inspect; "The customs agent examined the baggage"; "I must see your passport before you can enter the country"glass - scan (game in the forest) with binoculars | | 2. | scan - examine hastily; "She scanned the newspaper headlines while waiting for the taxi"glance over, skim, rake, run downexamine, see - observe, check out, and look over carefully or inspect; "The customs agent examined the baggage"; "I must see your passport before you can enter the country" | | 3. | scan - make a wide, sweeping search of; "The beams scanned the night sky"search - subject to a search; "The police searched the suspect"; "We searched the whole house for the missing keys" | | 4. | scan - conform to a metrical patternpoesy, poetry, verse - literature in metrical formconform - be similar, be in line with | | 5. | scan - move a light beam over; in electronics, to reproduce an imagemove, displace - cause to move or shift into a new position or place, both in a concrete and in an abstract sense; "Move those boxes into the corner, please"; "I'm moving my money to another bank"; "The director moved more responsibilities onto his new assistant" | | 6. | scan - read metrically; "scan verses"declaim, recite - recite in elocution | | 7. | scan - obtain data from magnetic tapes; "This dictionary can be read by the computer"readconstrue, interpret, see - make sense of; assign a meaning to; "What message do you see in this letter?"; "How do you interpret his behavior?"misread - read or interpret wrongly; "He misread the data" |
scanverb1. glance over, skim, look over, eye, check, clock (Brit. slang), examine, check out (informal), run over, eyeball (slang), size up (informal), get a load of (informal), look someone up and down, run your eye over, take a dekko at (Brit. slang) She scanned the advertisement pages of the newspaper.2. survey, search, investigate, sweep, con (archaic), scour, scrutinize, take stock of, recce (slang) The officer scanned the room.noun1. look, glance, skim, browse, flick, squint, butcher's (Brit. slang), brief look, dekko (Brit. slang), shufti (Brit. slang) I've had a quick scan through your book again.2. examination, scanning, ultrasound He was rushed to hospital for a brain scan.scanverb1. To view broadly or from a height:look over, overlook, survey.2. To look through reading matter casually:browse, dip into, flip through, glance at (or over) (or through), leaf (through), riffle (through), run through, skim, thumb (through).Translationsscan (skӕn) – past tense, past participle scanned – verb1. to examine carefully. He scanned the horizon for any sign of a ship. 仔細觀看 细看2. to look at quickly but not in detail. She scanned the newspaper for news of the murder. 瀏覽 浏览3. to pass radar beams etc over. The area was scanned for signs of enemy aircraft. (用雷達等)掃視 扫描4. to pass an electronic or laser beam over a text or picture in order to store it in the memory of a computer. 掃瞄(圖文等以儲存在電腦內) 扫描5. to examine and get an image of what is inside a person's body or an object by using ultra-sound and x-ray. They scanned his luggage at the airport to see if he was carrying drugs. 用超音波和X光檢查身體內部或某物 通过激光或X光对身体进行扫描6. to fit into a particular rhythm or metre. The second line of that verse doesn't scan properly. 符合格律 （诗歌）符合韵律 nounShe had an ultrasound scan to see whether the baby was a boy or a girl; a brain scan; a quick scan through the report. 掃瞄 扫描ˈscanner noun a machine etc that scans. Scanners are machines that show the contents of your luggage on a scereen; an ultrasound scanner; an optical scanner. 掃瞄器 扫描器IdiomsSeescan inscan
scan Meda. the examination of a part of the body by means of a scanner b. the image produced by a scanner scan[skan] (computer science) To examine information, following a systematic, predetermined sequence, for some particular purpose. (electronics) The motion, usually periodic, given to the major lobe of an antenna; the process of directing the radio-frequency beam successively over all points in a given region of space. (engineering) To examine an area, a region in space, or a portion of the radio spectrum point by point in an ordered sequence; for example, conversion of a scene or image to an electric signal or use of radar to monitor an airspace for detection, navigation, or traffic control purposes. One complete circular, up-and-down, or left-to-right sweep of the radar, light, or other beam or device used in making a scan. scan   Scanning by lobe comparison.i. To search the sky for any hostile aircraft. The area of the scan for a typical two-aircraft formation is indicated in the illustration. In flight, the term means “Search the sector indicated and report any contacts.”
ii. To make a sweep of selected flight instruments or an external scene with the eyes.
iii. The path periodically followed by a radiation beam. See helical scan and conical scanning.
iv. The motion of an electronic beam through space looking for a target. Scanning is carried out by the motion of the antenna or by lobe switching.SCAN (1)["A Parallel Implementation of the SCAN Language",N.G. Bourbakis, Comp Langs 14(4):239-254 (1989)].SCAN (2)A real-time language from DEC.
scan (3)(computer peripheral) See scanner.scan (4)(circuit design) See scan design.scan (5)(functional programming) See scanl, scanr.scan (storage, algorithm)An algorithm for scheduling multipleaccesses to a disk. A number of requests are orderedaccording to the data's position on the storage device. Thisreduces the disk arm movement to one "scan" or sweep acrossthe whole disk in the worst case. The serivce time can beestimated from the disk's track-to-track seek time, maximumseek time (one scan), and maximum rotational latency.
Scan-EDF is a variation on this.scan(1) To make an electronic comparison of a signal, pixel or data structure as described in the following definitions.
(2) In optical technologies, to read a printed form a line at a time in order to convert images into bitmapped representations or convert characters into text. See OCR.
(3) In video, to move across a picture frame a line at a time, either to detect the image in an analog or digital camera, or to refresh a CRT display.
(4) To search a data file sequentially for specific content.
(5) To search an executable file for a particular pattern. See antivirus program.
(6) To sequentially search for peripheral devices attached to the computer.scan
scan [skan] 1. to examine or map the body, or one or more organs or regions of it, by gathering information with a sensing device, such as a moving detector or a sweeping beam of radiation.2. the data or image so obtained, often designated according to the organ under examination, such as a brain scan, kidney scan, or thyroid scan.3. shortened form of scintiscan.A-scan display on a cathode ray tube of ultrasonic echoes, in which one axis represents the time required for return of the echo and the other corresponds to the strength of the echo.B-scan display on a cathode ray tube of ultrasonic echoes, in which the position of a bright dot on the tube corresponds to the time elapsed and the brightness of the spot to the strength of the echo; movement of the transducer across the skin surface yields a two-dimensional cross-sectional display.CAT scan (CT scan) the image generated by tomography" >computerized axial tomography.HIDA scan a type of scan using a technetium 99m complex to assess hepatobiliary function.thallium scan a scintiscan" >scintiscan involving use of thallium 201; see also thallium scan.ventilation-perfusion scan (V/Q scan) a scintigraphic technique for demonstrating perfusion defects in normally ventilated areas of the lung in the diagnosis of pulmonary embolism, consisting of the imaging of the distribution of an inhaled radionuclide followed by the imaging of the perfusion of the lungs by an injected radionuclide.scan (skan), 1. To survey by traversing with an active or passive sensing device. 2. The image, record, or data obtained by scanning, usually identified by the technology or device employed; for example, CT scan, radionuclide scan, ultrasound scan, etc. 3. Abbreviated form of scintiscan, usually identified by the organ or structure examined; for example, brain scan, bone scan, etc. scan (skăn)v.1. To direct a finely focused beam of light or electrons in a systematic pattern over (a surface) in order to reproduce or sense and subsequently transmit an image.2. To direct x-rays or other energy at (a body or body part) in order to produce an image, as with a CT scanner.n.1. The act or an instance of scanning.2. The action or process of scanning a body or body part.3. A picture or an image produced by this means.
scan′na·ble adj.scan′ner n.scan Imaging
A popular short form for the “hard copy” of various imaging procedures—e.g., scintiscan, CT scan—often using radioactive materials to diagnose, stage and monitor disease.
Types
Liver, bone, CT and MRI scans.
Virology
See Virus scan.
Vox populi
Tattoo scan, see there.SCAN Suspected child abuse or neglect, see there.
scan Imaging An image of internal body structures, often using radioactive materials, to diagnose, stage, and monitor disease Types Liver, bone, CT and MRI scans. See Abscess scan, Biliary scan, Bone density scan, Bone scan, Brain scan, CAT scan, Cold scan, Gastric emptying scan, Hepatobiliary scan, Liver-spleen scan, 111-Indium labeled leukocyte scan, Liver scan, Magnetic resonance imaging, Meckel's diverticulum scan, Myocardial infarction scan, Perfusion scan, PET scan, Radionuclide scan, Scintigraphy, Thyroid scan, Ventilation scan, Ventilation-perfusion scan, VIP-receptor scan, Virus scan noun A popular short form for the 'hard copy' of various imaging procedures–eg, scintiscan, CT scan. scan (skan) 1. To survey by traversing with an active or passive sensing device. 2. The image, record, or data obtained by scanning, usually identified by the technology or device employed; e.g., CT scan, radionuclide scan, ultrasound scan. 3. Abbreviated form of scintiscan, usually identified by the organ or structure examined; e.g., brain scan, bone scan. scan (skan) 1. To survey by traversing with an active or passive sensing device. 2. Image, record, or data obtained by scanning, usually identified by technology or device employed. Patient discussion about scanQ. Anybody to tell me more about MRI scan? had an MRIscan and this has snown adenocarcinoma of endometrium early stage There is no lymphatic involvement but is it possible an MRIscan to miss some tumor?A. MRI is a very effective machine but it has it's limits. it has a great resolution but will not see very small tumors. therefore- it can miss metastasis sometime. but if your adenocarcinoma is in early stage- it might not sent metastasis. they did a biopsy? that can give you some idea what to expect.
Q. I am 15 weeks pregnant. I had my NT scan and blood draw today. Iam using my Hubby user name here.I am 15 weeks pregnant. I had my NT scan and blood draw today. I doubt whether I am in a risky state because I read in medical journal that women with certain amount of risk go for second trimester screening and not healthy pregnant women. Is it so? Please clarify?A. There's something called an integrated sequential screening. You have the NT scan and blood draw in your first trimester, and then go back for an additional blood draw in your second trimester. They then calculate a unified result and present the results in the second trimester. Several other sources mentioned that often a high risk based on the NT scan and the first blood draw will prompt a diagnostic test. Yes, women with low or acceptable risk go on for the second trimester screening. Q. I'm worried if she has ADHD. Is there any MRI or brain scan test to diagnoses the problem? My daughter Elba is 15. She regularly goes to school but often forgets to do daily activities. I'm worried if she has ADHD. Is there any MRI or brain scan test to diagnoses the problem?A. Although in general practice MRI is not carried out to diagnose ADHD, the studies have shown that the ADHD brain has considerably less activity than does a normal brain when MRI's are compared. Stimulant drugs increases the chemical activity level, which decreases the symptoms. I shall suggest you to consult a physician specialized in this area. More discussions about scanLegalSeeCASSCAN
| Acronym | Definition |
|---|
| SCAN➣Scottish Archive Network | | SCAN➣Stop Child Abuse Now | | SCAN➣Social Cognitive and Affective Neuroscience (journal; Oxford) | | SCAN➣Space Communications and Navigation (US NASA) | | SCAN➣Suspected Child Abuse and Neglect | | SCAN➣Shared Check Authorization Network | | SCAN➣Scientific Committee on Animal Nutrition | | SCAN➣Selected Current Aerospace Notices | | SCAN➣States of California and Nevada | | SCAN➣Schedule for Clinical Assessment in Neuropsychiatry | | SCAN➣Switched Circuit Automatic Network | | SCAN➣System for Convection Analysis and Nowcasting (US NWS) | | SCAN➣Survey, Consider, Analyze, Notify (ExxonMobile hazard recognition) | | SCAN➣Shipment Confirmation Acceptance Notice (USPS) | | SCAN➣Shuttle Connector Analysis Network (US NASA) | | SCAN➣Speciality Center Acquisitions, NAVFAC | | SCAN➣Secure Cops Alert Network | | SCAN➣Silica-Coated Aluminum Nitride | | SCAN➣Supplier Corrective Action Notice | | SCAN➣Self-Correcting Automatic Navigation | | SCAN➣Simulated Comprehensive Air Navigation | | SCAN➣Somerville-Cambridge Aging Network (Massachusetts) | | SCAN➣Streamlined Senior Correlation Analyst | | SCAN➣Special Customer Agreement Number | | SCAN➣Small Customer Access Node | | SCAN➣Southwest Community Action Network (Berea, Ohio) | | SCAN➣Scientific Computing Arithmetic and Validated Numerics (IEEE conference) | | SCAN➣Secure Communications in ATM Network |
See SCNscan
Synonyms for scanverb glance overSynonyms- glance over
- skim
- look over
- eye
- check
- clock
- examine
- check out
- run over
- eyeball
- size up
- get a load of
- look someone up and down
- run your eye over
- take a dekko at
verb surveySynonyms- survey
- search
- investigate
- sweep
- con
- scour
- scrutinize
- take stock of
- recce
noun lookSynonyms- look
- glance
- skim
- browse
- flick
- squint
- butcher's
- brief look
- dekko
- shufti
noun examinationSynonyms- examination
- scanning
- ultrasound
Synonyms for scanverb to view broadly or from a heightSynonymsverb to look through reading matter casuallySynonyms- browse
- dip into
- flip through
- glance at
- leaf
- riffle
- run through
- skim
- thumb
Synonyms for scannoun the act of scanningRelated Wordsnoun an image produced by scanningSynonymsRelated Wordsverb examine minutely or intenselyRelated Wordsverb examine hastilySynonyms- glance over
- skim
- rake
- run down
Related Wordsverb make a wide, sweeping search ofRelated Wordsverb conform to a metrical patternRelated Wordsverb move a light beam overRelated Wordsverb read metricallyRelated Wordsverb obtain data from magnetic tapesSynonymsRelated Words- construe
- interpret
- see
- misread
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