Scanning Systems, CT • GROUP MEMBER: AHMAD RAFIQAN BIN NAYAN Muhammad Irfan Bin Alias Mohammad Al-Karim Tayasneh Mohd Izzad Samir Bin Iskandar 1. AXIAL CAT SCANNER 2. COMPUTED TOMOGRAPHY SYSTEM 3. HELICAL CT SCANNER 4. MULTISLICE CT SCANNER 5. SPIRAL CT SCANNER 6. ULTRAFAST CT SCANNER 7. VOLUME CT SCANNER 8. COMPUTED RADIOGARPHY CT SANNER
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Scanning Systems, CT
• GROUP MEMBER:AHMAD RAFIQAN BIN NAYANMuhammad Irfan Bin AliasMohammad Al-Karim TayasnehMohd Izzad Samir Bin Iskandar
memory loss, confusion, epilation or patchy hair loss
Consequece : Overdose might cause cancer (epilation is not related to carcinogenic effect)
Reported news1. Increased radiation-induced-cancer risk in pediatric patients
Factor :
Solution : - dose-reduction features geared toward pediatric patients is introduced- Regulatory agencies require CT scanner technicians to use patient size-specific charts- to reduce radiation doses for pediatric patients, reductions in tube current and gantry speed is introduced
scanning children protocol = scanning adult protocol
No difference in patient sizes and transmitted x-ray intensities
Reported news
2. Unexpectedly wide variations in the mean dose delivered to patients for the same studiesCauses : a. unnecessary testing could cause an overexposure to radiationb. System problemsc. communication breakdowns that result in repeat CT scans
2. Unexpectedly wide variations in the mean dose delivered to patients for the same studies
Causes : a. unnecessary testing could cause an
overexposure to radiation
b. System problemsc. communication breakdowns that result in repeat CT scans
Reported news
PURCHASE CONSIDERATION1. Upgrade their CT capabilities
- anticipate a need to upgrade their CT capabilities in the future.- 10-slice CT scanner 16 slices
- 40-slice system 64-slice system
why need to upgrde early?- buying lower-specification equipment and upgrading later will be more expensive
Upgrade to full-spec
2. air-conditioned computer rooms (necessary in some cases)why?- severely compromises the reliability of the scanner system and ultimately shortens its useful life
3. Conditioning the electrical power supply- make artifact-free images often depends strongly on the electrical power
4. Surge suppressors and means for automatic disconnection in the event of power failure must be installed
5. Enviromental considertions- reduce the use of rare metals during construction.
6. Cost considertions
Should purchase service contract
preventive maintenance will be performed at regular intervals