Conseils d’achat Intravascular Ultrasound (IVUS)
- To help diagnose arterial and venous abnormalities and their causes, intravascular ultrasonic scanning systems (diagnostic IVUS) provide the clinician with flow profiles of vessels throughout the body.
- Buyers of intravascular ultrasounds should consider the following issues: intravascular ultrasonic scanner functions and features, cost, ease-of-use, upgrading, image storage, and customer support.
- The use of Doppler further extends vascular techniques by providing flow detection in vessels.
- Spectral Doppler analysis packages can make calculations automatically.
- A full-featured intravascular ultrasound system that is used in a radiology department, cardiology department, vascular lab, or a vascular surgeon's office is needed for a comprehensive vascular study.
- Most comprehensive vascular studies are performed within the lab of the responsible facility, but the department's personnel also perform many routine studies at the patient's bedside, ICU, or emergency department.
- Most vascular studies use linear array probes that operate at frequencies of 5-10 MHz.
- The same ultrasound imaging technology described for cardiac and vascular ultrasound is used by intravascular ultrasound.
- The intravascular ultrasound catheter that is introduced into an artery has a transducer mounted at its end.
- These catheters, in addition to imaging, can measure the velocity of blood flow within an artery, which is useful for determining the severity of a blockage.
- Catheters also show the underlying atherosclerotic plaque, which is useful for determining which of the many types of angioplasty procedures is best to treat the blockage under study.
- The following are part of a typical configuration for an intravascular ultrasonic scanning systems (diagnostic IVUS): an intravascular ultrasonic scanner and software, several single- or multi-frequency transducers, color Doppler, M-mode, CFM, cardiac analysis software, a VCR, and a black-and-white or color printer.
- Compatibility with DICOM 3.0 is an important factor. Networking ultrasonic scanning systems and computer workstations can make image storage and retrieval as well as ultrasound department management more efficient.
- The following options may be added to some intravascular ultrasound systems: optional vascular, abdominal or intra-operative scanning capabilities, additional probe analysis packages, image archiving and obstetrics/gynecology devices.
Guide d'achat de matériel médical
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