Tong 3 3D Printing In Medicine Flashcards
What is stereolithography (SLA)?
A 3D printing technology using photopolymerization (light cause chains of molecules to link)
What is fused deposition modelling (FDM)?
An additive manufacturing technology (use heat then cool it down)
What’s the difference between stereolithography (SLA) and digital light processing (DLP)?
SLA use a single light beam / laser to draw
DLP can shine a whole light field using LCD monitor —> faster
What applications are best for SLA and DLP?
DLP
- one-off small and very intricate parts
- printing many small intricate parts at once
SLA
- quickly large parts without much detail
- detailed larger prints
What is FDM?
Fused deposition modelling (FDM)
Describe the FDM printing process
- a plat I filament is pushed into the nozzle
- the nozzle is heated to melt the material
- the nozzle can moved in both horizontal and vertical direction
Name some common FDM printing materials
Acrylonitrile butadiene styrene (ABS)
Polylactic acid (PLA)
Polycarbonate (PC)
Polyamide (PA)
Polystyrene (PS)
Metal or carbon fibre
What is bio 3D printing?
Utilises layer-by-layer method to deposit material that are tissue-like, where the cell function and viability are preserved. Can be used to print tissues and organs to help research drugs and pills.
What are the applications of bio 3D printing?
Surgical treatment planning
Radiation oncology treatment planning
Education
Demonstration
Printing of surgical devices
Printing of prosthesis
What are the limitation of 3D printing?
Weak strength
No control of opacity
No control of colour
Limited choice of material
How many combination are there in marching cube algorithm?
15
What is MAS?
Minimal access surgery
Name some image software for 3D printing
OsiriX
3D slicer
DICOM Anonymizer
What is DICOM encapsulated STL?
STL - standard tessellation language
A file format used in medical imaging to store 3D models of anatomical structures
What do DICOM encapsulation support?
Only the binary encoding of STL
