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ASME VV 40 2018

$98.04

ASME VV-40 – 2018 Assessing Credibility of Computational Modeling through Verification and Validation: Application to Medical Devices

Published By Publication Date Number of Pages
ASME 2018 61
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This Standard provides a framework for assessing the relevance and adequacy of completed V&V activities that establish credibility of a computational model. The credibility should be commensurate with the degree to which the computational model is relied on as evidence of device performance, functional characteristic, and/or safety to support a decision, and the consequences of that decision being incorrect.

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
6 FOREWORD
8 ASME V&V Committee Roster
9 CORRESPONDENCE WITH THE V&V COMMITTEE
12 1 EXECUTIVE SUMMARY
2 INTRODUCTION
2.1 Motivation
13 2.2 Purpose
2.3 Scope
2.4 Overview of the Risk-Informed Credibility Assessment Framework
Figure 2.4-1 Process Diagram of the Risk-Informed Credibility Assessment Framework
14 3 CONTEXT OF USE
4 MODEL RISK
4.1 Model Influence
15 4.2 Decision Consequence
Figure 4.2-1 Schematic of How Model Influence and Decision Consequence Determine Model Risk
16 5 MODEL CREDIBILITY
Tables
Table 5-1 Verification, Validation, and Applicability Activities and Their Associated Credibility Factors
17 5.1 Verification
5.1.1 Code Verification
18 5.1.2 Calculation Verification
5.2 Validation
5.2.1 Computational Model
19 5.2.2 Comparator
22 5.3 Applicability of the Validation Activities to the COU
23 5.3.1 Relevance of the QOIs
5.3.2 Relevance of the Validation Activities to the COU
Figure 5.3-1 Illustrative Examples of Three COUs Relative to the Validation Points for a Two-Parameter (X1, X2) Computational Model
24 6 THE PLAN
7 CREDIBILITY ASSESSMENT
25 Figures
Figure 7-1 Example Workflow for Assessing Computational Model Credibility
26 8 DOCUMENTATION AND EVIDENCE
27 MANDATORY APPENDIX I REFERENCES
28 MANDATORY APPENDIX II GLOSSARY
30 Table A-1-1 A Sample PIRT
NONMANDATORY APPENDIX A PHENOMENA IDENTIFICATION AND RANKING TABLE
A-1 INTRODUCTION TO PIRT
A-2 COMPILING THE PIRT
A-2.1 Classification of Phenomena
A-2.2 Knowledge/Confidence Levels
31 Table A-2.2-1 An Example Gradation of Knowledge/Confidence Level and Importance
Table A-2.2-2 A Sample PIRT Including a Mitigation Column
A-3 REFERENCES
32 Figure B-1-1 Elements of the ASME V&V 40 Risk-Informed Credibility Assessment Framework Illustrated in Nonmandatory Appendix B
NONMANDATORY APPENDIX B EXAMPLES OF RISK-INFORMED CREDIBILITY ASSESSMENT CONCEPTS
B-1 INTRODUCTION
B-2 EXAMPLES
33 Table B-1-1 Mapping of Examples to Selected Credibility Factors
Table B-1-2 Mapping of Examples to Device Type and Modeling Approach
34 Figure B-2.1.1-1 Illustration of a Centrifugal Blood Pump Design
B-2.1 Example 1: Assessing Hemolysis in Centrifugal Blood Pumps
36 Figure B-2.1.4.2-1 Model Risk Matrix for Example 1
Table B-2.1.4.2-1 Corresponding Risk Levels for the Credibility Factors That Address Rigor of Output Comparison and Agreement of Output Comparison, With the Addition of Validation Metric in Figure B-2.1.4.2-1
39 Table B-2.1.5.4-1 Credibility Factors Summary
B-2.2 Example 2: Predicting the Performance of Flow Diverters in the Treatment of Brain Aneurysms
40 Figure B-2.2.1-1 An Example of a Flow Diverter Placed in a Parent Vessel With a Side-Wall Aneurysm
Figure B-2.2.1-2 The Flow Patterns Before and After the Placement of a Flow Diverter, Highlighting the Significant Reduction in Blood Flow Within the Aneurysm After Diverter Placement
41 Figure B-2.2.4.2-1 Model Risk Matrix for Example 2
42 B-2.3 Example 3: Stability and Adjustability of Hospital Beds
43 Figure B-2.3.1-1 Schematic of a Hospital Bed
45 B-2.4 Example 4: Radiofrequency-Induced Temperature Rise in Patients During Magnetic Resonance Imaging
46 Figure B-2.4.1-1 Physical Test Set-Up and Computational Model Representation of a Gel Phantom Inside an MRI
48 B-2.5 Example 5: Evaluation of the Locking Mechanism Strength of a Posterior-Stabilized Total Knee Arthroplasty Design
49 Figure B-2.5.1-1 Schematic of a Posterior-Stabilized TKA Assembly
50 Figure B-2.5.3-1 Matrix of Proposed COUs for a Tibial Component Anterior Liftoff Model
Figure B-2.5.3.4-1 Potential Interactions Among Modeling, Testing, and Predicate Evaluation for COU4
51 Figure B-2.5.4-1 Impact of Benchtop Testing (BT) on Model Influence and Therefore Overall Model Risk
53 Figure B-2.6.1-1 The ASTM Cage
B-2.6 Example 6: Interbody Fusion Devices
54 Figure B-2.6.1-2 Typical Compressive Load-Displacement Plot of a Fusion Cage
56 Table B-2.6.5.1.1-1 Model Risk Summary
Table B-2.6.5.1.1-2 System Configuration: Minimum Level of Credibility Needed for the COUs
57 Table B-2.6.5.1.1-3 System Properties: Minimum Level of Credibility Needed for the COUs
Table B-2.6.5.1.2-1 Comparator Validation: Measurement Uncertainty
58 Table B-2.6.5.1.3-1 Equivalency of Input Parameters
Table B-2.6.5.2-1 Relevance of the QOIs
ASME VV 40 2018
$98.04