(51 days)
vascuCAP is a medical image analysis system that allows the processing, review, analysis, communication and media interchange of multi-dimensional digital images acquired with contrast from CT imaging devices.
vascuCAP is intended to assist trained physicians in the stratification of patients identified to have atherosclerosis. The software post processes images obtained using a multidetector CT. The package provides tools for the measurement and visualization (color coded maps) of arterial vessels.
Clinicians can select any artery to view the following anatomical references: the highlighted vessel in 3D, two rotatable curved MPR vessel views displayed at angles orthogonal to each other, and cross sections of the vessel. Cross-sectional measurements can be obtained using standard vascuCAP software measuring tools. Clinicians can semi-automatically determine contrasted lumen boundaries, stenosis measurements, and maximum lumen diameters. In addition, clinicians can edit lumen boundaries and examine Hounsfield unit or signal intensity statistics. Clinicians can also manually measure vessel length along the centerline in standard curved MPR views.
The measurements provided by vascuCAP are not intended to provide a diagnosis or clinical recommendations. vascuCAP is intended as a tool to complement standard of care.
vascuCAP is an image analysis software package for evaluating CT images of arterial vessels. It allows the processing, review, analysis, communication, and media interchange of multidimensional digital images acquired from CT scanners. vascuCAP provides multi-dimensional visualization of digital images to aid clinicians in their analysis of anatomy and tissue characteristics. The vascuCAP software application user interface follows typical clinical workflow patterns to process, review, and analyze digital images.
The provided text describes the performance data for the vascuCAP A.1.2 device, comparing it to a predicate device. Here's a breakdown of the acceptance criteria and the study details:
1. Table of Acceptance Criteria and Reported Device Performance
The document does not explicitly state "acceptance criteria" as pass/fail thresholds against which the device was evaluated. Instead, it presents "analytic performance metrics" as established results from the testing. For each metric, the reported performance includes bias, intercept, slope, quadratic term, and R^2, along with 95% confidence intervals. The "tested range" indicates the range of true values for the measurand.
Table: Reported Device Performance Metrics (Implicit Acceptance Criteria)
| Structure/Composition | Measurand (Tested Range) | Reported Performance (Point Estimate [95% Confidence Interval]) |
|---|---|---|
| Structure | Lumen Area (0.3 - 290.1mm²) | Bias: 0.81mm² [0.3, 1.9], Intercept: 0.65mm² [-0.6, 0.9], Slope: 1.01 [0.9, 1.0], Quadratic term: 0.0 [0.0, 0.0], R²: 0.9987 |
| Wall Area (9.4 - 448.6mm²) | Bias: 0.50mm² [-1.08, 1.29], Intercept: -0.59mm² [-4.1, 2. 8.0], Slope: 1.0 [0.99, 1.04], Quadratic term: 0.0 [0.0, 0.0], R²: 0.9974 | |
| Stenosis** (33-69%) | Vessels ≥5.9mm: Bias: 3.7% [1.29, 4.47], Intercept: 5.99% [-0.81, 9.93], Slope: 0.96 [0.84, 1.1], Quadratic term: -0.01 [-0.02, 0.01], R²: 0.8034 | |
| **Vessels |
§ 892.2050 Medical image management and processing system.
(a)
Identification. A medical image management and processing system is a device that provides one or more capabilities relating to the review and digital processing of medical images for the purposes of interpretation by a trained practitioner of disease detection, diagnosis, or patient management. The software components may provide advanced or complex image processing functions for image manipulation, enhancement, or quantification that are intended for use in the interpretation and analysis of medical images. Advanced image manipulation functions may include image segmentation, multimodality image registration, or 3D visualization. Complex quantitative functions may include semi-automated measurements or time-series measurements.(b)
Classification. Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std., Society of Motion Picture and Television Engineers (SMPTE) Test Pattern).