Download Scanning System, CT

Scanning System, CT
Core medical equipment - Information
UMDNS
13469
Scanning Systems, Computed Tomography
GMDN
37618
Full-body CT system
Other common names:
Computed Tomography Scanners; Computed Tomography Scanning Systems; Computed X-Ray Tomography Scanners;
Computer-Assisted Tomography Scanners; Computerized Tomographs; CT Scanners; CT Scanners, Mobile; CT Scanning
Systems; CT Slice Scanners; Multislice Scanners, Computer Tomography; Scanners, Computed Axial Tomography;
Scanners, Computed Tomography; Scanners; Computer Tomography, Mobile; Scanners, Computed Tomography, X-Ray;
Scanner, computed tomography, full-body; Whole body x-ray CT scanner
Health problem addressed
These scanners are used for a wide
procedures, including spine and head
abdominal and pelvic malignancies; to
ventricles, the chest wall, and the large
assess musculoskeletal degeneration.
variety of diagnostic
injuries, lesions, and
examine the cerebral
blood vessels; and to
Product description
Devices that consist of an x-ray subsystem, a gantry, a patient
table, and a controlling computer. A high-voltage x-ray generator
supplies electric power to the x-ray tube, which usually has a
rotating anode and is capable of withstanding the high heat
loads generated during rapid multiple-slice acquisition. The
gantry houses the x-ray tube, x-ray generator, detector system,
collimators, and rotational frame.
Principles of operation
Use and maintenance
CT scanners use slip-ring technology, which was introduced in
1989. Slip-ring scanners can perform helical CT scanning, in which
the x-ray tube and detector rotate around the patient’s body,
continuously acquiring data while the patient moves through
the gantry. The acquired volume of data can be reconstructed
at any point during the scan. All modern CT scanners are
multislice. Inside the gantry, an x-ray tube projects a fan-shaped
x-ray beam through the patient to the detector array. As the
x-ray tube and detector rotate, x-rays are detected continuously
through the patient. The computer mathematically reconstructs
data from each full rotation to produce an image of one slice.
User(s): Computed tomography scanning
technician
Operating steps
Requirements: Stable power source; shielded
room and control room
During a CT scan, the table moves the patient into the gantry
and the x-ray tube rotates around the patient. As x-rays pass
through the patient to the detectors, the computer acquires and
processes data to form an image.
Maintenance: Medical staff; technician;
biomedical or clinical engineer
Training: Initial training by manufacturer and
manuals
Environment of use
Settings of use: Hospitals; private practices;
clinics; stand-alone imaging centers
Product specifications
Approx. dimensions (mm): 1882 x 2225 x 1006
Approx. weight (kg): 1906
Reported problems
Controlling the radiation dose is the most significant concern
facing all CT users. Also, unnecessary testing could cause an
overexposure to radiation. System problems and communication
breakdowns can result in repeat CT scans, and so, facilities need
to provide extensive training for these systems to eradicate
confusion when using the equipment.
Consumables: NA
Price range (USD): 329,900-3,200,000
Typical product life time (years): 8 to 10
Shelf life (consumables): NA
Types and variations
Multislice; 3-D CTA; 4-D imaging
http://www.who.int/medical_devices/en/index.html
© Copyright ECRI Institute 2011 (not including the GMDN code and device name).
Reproduced with Permission from ECRI Institute’s Healthcare Product Comparison System.
© Copyright GMDN Agency 2011. GMDN codes and device names are reproduced with permission from the GMDN Agency.