Smart Plus (PHT-35LHS)
Technical Manual
VT-TECH-Smart Plus-001
COPYRIGHT© 2018 VATECH.
Table of Contents
General Information ....................................................................................... 1
Before you begin ............................................................................................ 5
1. Conventions in This Manual ............................................................................................................ 5
2. Safety Information ............................................................................................................................. 6
3. Equipment Safety Instructions ........................................................................................................ 7
4. Radioactive Warning ......................................................................................................................... 8
5. Pre-check points for Service Technician ........................................................................................ 8
6. BImage Optimization Command List for CT and PANO ................................................................ 9
Chapter 1. Hardware Service Guide ........................................................... 10
1. Smart Plus (PHT-35LHS) Block Diagrams .................................................................................... 10
2. Smart Plus Board Configuration .................................................................................................... 11
2.1. Vertical Frame Part ..................................................................................................................... 11
2.2. Rotating Unit Part ...................................................................................................................... 14
2.3. Handle Frame Part .................................................................................................................... 17
2.4. Cephalometric Unit Part ............................................................................................................ 18
3. Smart Plus (PHT-35LHS) Connection Diagrams .......................................................................... 19
4. Disassembly of PHT-35LHS Covers .............................................................................................. 21
4.1. Vertical Frame Part .................................................................................................................... 21
4.2. Rotating Unit Part ...................................................................................................................... 22
4.3. Handle Frame Unit Part ............................................................................................................. 27
4.4. CEPH Unit Part .......................................................................................................................... 28
Chapter 2. Image Optimization ................................................................... 30
1. Sensor Calibration .......................................................................................................................... 30
1.1. CBCT Preliminary Sensor Calibration (for new sensor only) .................................................... 30
1.2. Bad Pixel: Specification & Definition ......................................................................................... 38
2. CBCT Geometry Calibration .......................................................................................................... 39
2.1. Recovering Factory Default Calibration Data for CBCT Geometry Calibration ......................... 39
2.2. Setting up Bead Phantom Offset Value ..................................................................................... 39
2.3. Setting up CBCT Reconstruction Environment ......................................................................... 45
2.4. Bead Phantom Image Acquisition ............................................................................................. 46
2.5. Bead Phantom Image Reconstruction ....................................................................................... 52
2.6. CBCT Collimator Alignment ....................................................................................................... 56
3. CBCT Collimator Alignment ........................................................................................................... 57
3.1. Left/Right Collimator Alignment (FOV: 100 x 85) ...................................................................... 57
3.2. Top/Bottom Collimator Alignment (FOV: 100 x 85, 100 x 70, 50x50) ........................................ 61
4. CBCT Rotator Position Alignment ................................................................................................. 65
4.1. Before CBCT Rotator Position Alignment .................................................................................. 66
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