CT number definition

CT number means the number used to represent the x-ray attenuation associated with each elemental area of the CT image.
CT number means the number used to represent the X-ray attenuation associated with each elemental area of the CT image. where:k = A constant. (The constant has a normal value of 1,000 when the Houndsfield scale of CTN is used.)µx = Linear attenuation coefficient of the material of interest.µw = Linear attenuation coefficient of water.
CT number or “CTN” means the number used to repre- sent the x−ray attenuation associated with each elemental area of the CT image as expressed in the following equation:

Examples of CT number in a sentence

  • Invoices shall include the following information: CT number, Contractor name and/or DBA, Contractor address, number of hours worked, dates of work, rate, and detailed description of service/materials provided.

  • A parametrization of the CT number of a substance and its use for stoichiometric calibration.

  • Differential diagnosis of ground-glass opacity nodules: CT number analysis bythree-dimensional computerized quantification.

  • Either the difference in CT number of different materials within the phantom, or the number of visible low-contrast objects is recorded.

  • CT number" means the number used to represent the x-ray attenuation associated with each elemental area of the CT image.where: k = A constant5μx = Linear attenuation coefficient of the material of interest.μw = Linear attenuation coefficient of water.

  • Documentation Amendment applications consist of:- Covering letter, including the EudraCT number, the CT number assigned by the HPRA, the protocol number(s) affected by the amendment and the trial title,- EU ‘Substantial Amendment Notification Form’,- Relevant extracts from the documents that are changed, highlighting current and proposed wording, where applicable,- New version of documents (including the clinical trial application form) if changes are made,- Supporting data.

  • Forth, CT number was measured from different CT scans, including CT number acquired from unenhanced TSCT imaging and serials of enhanced monochromatic spectral imaging at a 10-keV interval from 40 to 140 keV.

  • And when using a threshold of greater or equal to16.1 mm for size measurement and enhanced monochromatic CT number of 140 keV greater or equal to −476.4 HU together, the diagnostic capacity and sensitivity for IA increased.

  • The registrant will be assigned a registration number (CT number) upon completion of the registration process.

  • The tests shall be conducted by any individual authorized by the United States Department of Transportation through a DOT "CT" number to conduct such tests.


More Definitions of CT number

CT number means the number used to represent the X-ray attenuation associated with each elemental
CT number. (CTN) means the number used to represent the x- ray attenuation associated with each elemental area of the CT image, as set forth in Appendix E.
CT number means the number used to represent the x-ray attenuation associated with each elemental area of the CT image. k( ux - uw)CTN = uw where:k = A constant, a normal value of 1,000 when the Houndsfield scale of CTN is used;ux= Linear attenuation coefficient of the material of interest; uw= Linear attenuation coefficient of water. 11. Dose profile means the dose as a function of position along a line. 12. Elemental area means the smallest area within a tomogram for which the x-ray attenuation properties of a body are depicted. (See also "Picture element"). 13. Modulation transfer function means the modulus of the Fourier transform of the impulse response of the system. 14. Multiple tomogram system means a computed tomography x-ray system which obtains x-ray transmission data simultaneously during a single scan to produce more than one tomogram. 15. Noise means the standard deviation of the fluctuations in CTN expressed as a percentage of the attenuation coefficient of water. Its estimate (sn) is calculated using the following expression: Sn = 100 x CS x suw where: CS = Linear attenuation coefficient of the material of interest. uw = Linear attenuation coefficient of water.s = Estimated standard deviation of the CTN of picture elements in a specified area of the CT image. 16. Nominal tomographic section thickness means the full width at half-maximum of the sensitivity profile taken at the center of the cross-sectional volume over which x-ray transmission data are collected. 17. Picture element means an elemental area of a tomogram. 18. Reference plane means a plane which is displaced from and parallel to the tomographic plane. 19. Remanufacturing means modifying a CT system in such a way that the resulting dose and imaging performance become substantially equivalent to any CT x-ray system manufactured by the original manufacturer on or after November 29, 1984. Any reference in this subsection to “manufacture,” “manufacturer,” or “manufacturing” includes remanufacture, remanufacturing, respectively. 20. Scan means the complete process of collecting x-ray transmission data for the production of a tomogram. Data can be collected simultaneously during a single scan for the production of one or more tomograms. 21. Scan increment means the amount of relative displacement of the patient with respect to the CT system between successive scans measured along the direction of such displacement. 22. Scan sequence means a pre-selected set of two or more scans performed consec...
CT number means the number used to represent the x-ray attenuation
CT number. (CTN) means the number used to represent the x- ray attenuation associated with each elemental area of the CT image.

Related to CT number

  • Contract Number means, with respect to any Contract included in the Trust, the number assigned to such Contract by the Servicer, which number is set forth in the related Schedule of Contracts.

  • Lot number or “batch number” means a distinctive group of numbers, letters, or symbols or any combination of these that is unique to a group of cannabis goods.

  • Unit number means the number, letter, or combination of numbers and

  • Fax Number 231 0000 Xxxex Number: RS 24396 Attention: Ms Qxxx Xxx Wee/Ms Sxxxxxxx Xxxx By: /s/ Goh Chonx Xxxxx By: /s/ Chan Xxxx Xxx ------------------------------------ ------------------------------- Name: Goh Chonx Xxxxx Name: Chan Xxxx Xxx ---------------------------------- ----------------------------- Title: Head, Corporate Banking Title: Vice President Division, Senior Vice President ---------------------------- --------------------------------- BAYERISCHE LANDESBANK GIROZENTRALE, SINGAPORE BRANCH 300, Xxxxx Xxxx, #00-00, Xxx Xxxxxxxxx, Xxxxxxxxx 000000.

  • Card Number means the number on the front of the Card or any digital versions of the Card Number.

  • voter ID number means a unique, randomly generated numeric identifier allocated to each voter by the Returning Officer for the purpose of e-voting,

  • Batch number means a unique numeric or alphanumeric identifier assigned prior to any testing to allow for inventory tracking and traceability.

  • DUNS Number means a unique nine digit identification number provided by Dun & Bradstreet for each physical location of Grantee’s organization. Assignment of a DUNS Number is mandatory for all organizations seeking an Award from the state of Illinois.

  • Original part number means a combination of numbers or letters assigned by the enterprise at item creation to a class of items with the same form, fit, function, and interface.

  • Automatic Number Identification or "ANI" means a Feature Group D signaling parameter which refers to the number transmitted through a network identifying the billing number of the calling party.

  • CAS number means the Chemical Abstract Service registry number identifying a particular substance.

  • Account Number means a serial number assigned by GTJAS to be used as the Client’s personal identification when opening the Account.

  • Data Universal Number System (DUNS) Number means the 9-digit number assigned by Dun and Bradstreet, Inc. (D&B) to identify unique business entities.

  • Data Universal Numbering System+4 (DUNS+4) number means the DUNS number assigned by D&B plus a 4-character suffix that may be assigned by a business concern. (D&B has no affiliation with this 4-character suffix.) This 4-character suffix may be assigned at the discretion of the business concern to establish additional SAM records for identifying alternative Electronic Funds Transfer (EFT) accounts (see the FAR at subpart 32.11) for the same concern.

  • Location Routing Number (LRN means the ten (10) digit number that is assigned to the network switching elements (Central Office–Host and Remotes as required) for the routing of calls in the network. The first six (6) digits of the LRN will be one of the assigned NPA NXX of the switching element. The purpose and functionality of the last four (4) digits of the LRN have not yet been defined but are passed across the network to the terminating switch.

  • Location Routing Number or "LRN" means a unique ten- (10)-digit number assigned to a Central Office Switch in a defined geographic area for call routing purposes. This ten- (10)-digit number serves as a network address and the routing information is stored in a database. Switches routing calls to subscribers whose telephone numbers are in portable NXXs perform a database query to obtain the Location Routing Number that corresponds with the Switch serving the dialed telephone number. Based on the Location Routing Number, the querying Carrier then routes the call to the Switch serving the ported number. The term "LRN" may also be used to refer to a method of LNP. "Long Distance Service" (see "Interexchange Service").

  • Data Universal Numbering System +4 (DUNS+4) number means the DUNS number assigned by D&B plus a 4- character suffix that may be assigned by a business concern. (D&B has no affiliation with this 4-character suffix.) This 4-character suffix may be assigned at the discretion of the business concern to establish additional SAM records for identifying alternative Electronic Funds Transfer (EFT) accounts for the same parent concern.

  • Xxxxxxxx-Xxxxx Certification A written certification signed by an officer of the Master Servicer that complies with (i) the Xxxxxxxx-Xxxxx Act, and (ii) Exchange Act Rules 13a-14(d) and 15d-14(d), as in effect from time to time; provided that if, after the Closing Date (a) the Xxxxxxxx-Xxxxx Act is amended, (b) the Rules referred to in clause (ii) are modified or superseded by any subsequent statement, rule or regulation of the Commission or any statement of a division thereof, or (c) any future releases, rules and regulations are published by the Commission from time to time pursuant to the Xxxxxxxx-Xxxxx Act, which in any such case affects the form or substance of the required certification and results in the required certification being, in the reasonable judgment of the Master Servicer, materially more onerous that then form of the required certification as of the Closing Date, the Xxxxxxxx-Xxxxx Certification shall be as agreed to by the Master Servicer and the Depositor following a negotiation in good faith to determine how to comply with any such new requirements.

  • Automatic Location Identification (“ALI”) means a feature that provides the caller’s telephone number, address and the names of the Emergency Response agencies that are responsible for that address.

  • Data Universal Numbering System (DUNS) number means the 9-digit number assigned by Dun and Bradstreet, Inc. (D&B) to identify unique business entities.

  • EPA identification number means the number assigned by EPA to each generator, transporter, and treatment, storage, or disposal facility.