Vatech Smart Plus PHT-35LHS - Before You Begin; Conventions in This Manual

Smart Plus (PHT-35LHS)
Technical Manual
VT-TECH-Smart Plus-001
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4.2. Performing CBCT Rotator Position Alignment........................................................................... 69
5. Background Calibration ................................................................................................................. 72
5.1. CBCT Background Calibration Standard ................................................................................... 72
5.2. Performing CBCT Background Calibration ................................................................................ 73
6. CBCT CT Number Calibration ........................................................................................................ 79
6.1. Before CBCT CT Number Calibration ....................................................................................... 80
6.2. Performing CBCT CT Number Calibration ................................................................................ 82
7. Air Calibration ................................................................................................................................. 87
7.1. Acquiring Projection Data .......................................................................................................... 87
8. CBCT Image Inspection .................................................................................................................. 88
8.1. 58BCBCT Image Inspection Standard ...................................................................................... 88
8.2. CBCT Image Inspection ............................................................................................................ 89
8.3. CBCT Geometry Inspection ..................................................................................................... 101
8.4. CT Number Accuracy Inspection ............................................................................................. 107
Chapter 3. PANO Image Optimization ....................................................... 111
1. PANO Sensor Calibration .............................................................................................................. 111
1.1. PANO Sensor Calibration Standard ......................................................................................... 111
1.2. Before PANO sensor calibration ............................................................................................... 111
1.3. Configuring PANO Sensor Settings .......................................................................................... 112
1.4. Performing PANO Sensor Dark Calibration .............................................................................. 113
1.5. Performing PANO Sensor Bright Calibration ............................................................................ 115
2. Aligning PANO Collimator ............................................................................................................. 118
2.1. PANO Collimator Alignment Standard ...................................................................................... 118
2.2. PANO Collimator Alignment ...................................................................................................... 119
3. PANO Geometry Calibration ........................................................................................................ 123
3.1. PANO Geometry Calibration Standard .................................................................................... 123
3.2. Performing PANO Geometry Calibration ................................................................................. 124
4. PANO Image Inspection ................................................................................................................ 130
4.1. PANO Image Inspection Standard .......................................................................................... 130
4.2. Performing PANO Image Inspection ....................................................................................... 131
Chapter 4. CEPH Image Optimization ....................................................... 136
1. CEPH Sensor Calibration ............................................................................................................. 136
1.1. 73BConfiguring CEPH Sensor ................................................................................................ 136
1.2. Performing CEPH Sensor Dark Calibration............................................................................. 137
1.3. Performing CEPH Sensor Bright Calibration ........................................................................... 138
1.4. Verifying Bad Pixels and Lines ................................................................................................ 140
2. Performing CEPH Geometry Calibration .................................................................................... 141
3. Setting the Collimator and Performing 4% Cut Evaluation ...................................................... 144
3.1. CEPH Collimator alignment using the EzAlign ........................................................................ 144