Cleared Traditional

K935454 - DPX TISSUE QUANTIFICATION OUTPUT (FDA 510(k) Clearance)

Class II Radiology device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K935454 · Lunar Corp. · Radiology device
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Oct 1995
Decision
706d
Days
Class 2
Risk

K935454 is an FDA 510(k) clearance for the DPX TISSUE QUANTIFICATION OUTPUT. Classified as System, X-ray, Tomography, Computed (product code JAK), Class II - Special Controls.

Submitted by Lunar Corp. (Madison, US). The FDA issued a Cleared decision on October 19, 1995 after a review of 706 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.1750 - the FDA radiology and imaging software oversight framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: High-complexity regulatory submission. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind Radiology submissions.

View all Lunar Corp. devices

Submission Details

510(k) Number K935454 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received November 12, 1993
Decision Date October 19, 1995
Days to Decision 706 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
599d slower than avg
Panel avg: 107d · This submission: 706d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code JAK System, X-ray, Tomography, Computed
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.1750
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Radiology devices follow this clearance model.

Regulatory Peers - JAK System, X-ray, Tomography, Computed

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