section .2300 – criteria and standards for computed tomography
10A NCAC 14C .2301 DEFINITIONS
The following definitions shall apply to all rules in this
(1) "Approved computed tomography (CT)
scanner" means a CT scanner which was not operational prior to the
beginning of the review period but which had been issued a certificate of need.
(2) "Computed tomography" means a technique
whereby a sharply collimated X‑ray beam is passed through the human body
from a source which rotates around the body in a specific arc. As the beam
passes through the body from its perimeter, its intensity is reduced. The
transmitted intensity of the beam varies in accordance with the density of the
tissue it passes through and is measured by sensitive detectors and, from this
information, two‑dimensional cross‑sectional pictures or other
images may be generated. A computer is used to generate the image from the
measurements of X‑ray beam intensity. Tissue images can be done with or
without contrast agents. Computed tomography services are rendered by CT
(3) "Computed tomography (CT) scanner" means
an imaging machine which combines the information generated by a scanning X‑ray
source and detector system with a computer to reconstruct a cross‑sectional
image of the full body, including the head.
(4) "Computed tomography (CT) service area"
means a geographical area defined by the applicant from which the applicant
projects to serve patients.
(5) "CT scan" means one discrete image of a
patient produced by a CT scanner.
(6) "Existing CT scanner" means a computed
tomography scanner in operation prior to the beginning of the review period.
(7) "Fixed CT scanner" means a CT scanner
that is used at only one location or campus.
(8) "HECT unit" means a unit that is
equivalent to one CT scan which is derived by applying a weighted conversion
factor to a CT scan in accordance with the Head Equivalent Computed Tomography
studies formula developed by the National Electric Manufacturers, based on the
(9) "Mobile CT scanner" means a CT scanner
and transporting equipment which is moved to provide services at two or more
(10) "Related entity" means the parent company
of the applicant, a subsidiary company of the applicant (i.e., the applicant
owns 50 percent or more of another company), a joint venture in which the
applicant is a member, or a company that shares common ownership with the
applicant (i.e., the applicant and another company are owned by some of the
History Note: Authority G.S. 131E‑177(1); 131E‑183(b);
Temporary Adoption Eff. September 1, 1993 for a period of 180 days or until the permanent rule becomes effective, whichever is sooner;
Eff. February 1, 1994;
Amended Eff. February 1, 2008.