systemPhilipsUltrasoundfamily: iu22

Philips iU22 (original)

Family: iU22 · Modality: Ultrasound

Pre-xMATRIX generation of the iU22. Shipped 2004 through ~2011 on host software revisions 5.x (early) through 6.x (mid-production), with 4 probe ports, PureWave single-crystal transducer support, and mechanical 4D probes for volumetric imaging. Succeeded by the iU22 xMATRIX generation that added electronic matrix-array transducers, and ultimately by the EPIQ Elite class at the current premium-cart tier.

Platform characteristics

  • Cart-based premium console — shared chassis and body with later iU22 xMATRIX revisions.
  • 4 probe ports — simultaneous connection of multiple transducers.
  • PureWave single-crystal technology — PZT replacement for improved sensitivity and bandwidth vs conventional piezoelectric. Clinically meaningful for technically difficult patients (high BMI, lung).
  • Mechanical 4D probes — volumetric imaging is supported via mechanically wobbled transducers (e.g., V6-2 volumetric transducer). Frame rates and field of view are constrained relative to later electronic matrix arrays.
  • No xMATRIX support — electronic 2D matrix transducers (X5-1, X6-1, X7-2t) introduced on iU22 xMATRIX and carried forward into EPIQ do not function on original iU22 hosts.
  • Host software 5.x / 6.x — licensing tier differences across revisions affect application availability. Early 5.x units ship without features available in late 6.x.

Transducer portfolio

Principal PureWave / conventional probes supported:

  • C5-1 / C6-2 — convex abdominal (PureWave).
  • L12-5 / L12-4 — vascular / small-parts linear.
  • L9-3 — MSK, breast, small parts.
  • S5-1 / S4-2 — adult cardiac sector (PureWave).
  • V6-2 — mechanical volumetric (4D).
  • C8-4v / C10-3v — endocavity (transvaginal, transrectal).

Clinical positioning

  • General radiology ultrasound — abdominal, OB, GYN, vascular, MSK — mainstream use case.
  • Cardiac at legacy tier — adult cardiac with PureWave sector probes. iE33 was the dedicated cardiology sibling of the same era; iU22 original handles basic cardiac but is not a cardiology-dedicated platform.
  • Volumetric studies via mechanical 4D — 3D / 4D OB, GYN, fetal echo with V6-2; workflows predate the electronic xMATRIX convenience step.

Relationship to siblings and successors

  • iU22 xMATRIX — later-generation iU22 with electronic matrix-array support (X6-1, X5-1c, X7-2t). Same chassis, upgraded imaging chain + host software.
  • iU22 — family card.
  • Philips iE33 — cardiology-dedicated cart-based sibling of the same era.
  • EPIQ Elite — current premium general-imaging cart; effective successor-class to the iU22 / iE33 generation.

Acceptance-test posture

  • Host software revision (5.x vs 6.x) — licensing tier scope differs meaningfully.
  • Probe inventory — PureWave vs non-PureWave probe counts and calibration status.
  • Mechanical 4D probe (V6-2) wear — motor and scan-head encoder condition degrade with use.
  • DICOM Store / Worklist integration verified.

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