The Multi-Slice Computed Tomography Analysis
1.0 INTRODUCTION
The basic idea of the Multi-slice Computed Tomography (MSCT) is to widen the x-ray source with several detectors in rows so that the data can be gathered of more than a slice a time thus reduces the time of scanning. From the first establishment till this day, the MSCT systems had change in so many aspects. The advancements of the systems are to fulfill the medical needs and had brings a lot of convenience to the clinical fields. By producing the 3D image, the MSCT give a great help in diagnosis of new clinical applications such as heart and vascular CT application, orthopedics and trauma imaging, comprehensive brain and stroke assessment and many more. From this assignment, the topics that would be discusses regarding the …show more content…
This mechanism is very helpful to distinguish the materials with the same HU value that cannot be distinguished by the conventional CT. The HU value are the indicator that were used to differentiate between the bone, soft tissues, fat, bone and muscle but some materials in body have almost the same HU value. As example, intracranial hemorrhage can have the same attenuation as dilute contrast of diffuse parenchymal mineralization (Ginat, D& Gupta,R. 2014). Rather than scanning the subject multiple times at different energies to get the desired result, this mechanism would solve the problem by producing different energies at a single scan.
4.0 MEASUREMENT TECHNIQUES
There are modes in acquiring the data, which are the axial scanning and the helical scanning. Axial scanning use the “step-and-shoot” technique where the number of images acquired during an axial scans corresponds to the number of active detector slices ( Ulzheimer, S., & Flohr, T.). Whereas, the spiral/helical scanning is characterized by continuous gantry rotation and continuous data acquisition while the patient table is moving at constant speed ( Ulzheimer, S., & Flohr, …show more content…
These developments give relatively low-cost, high quality, large area of flat-panel detector arrays. Other advantages of the flat panel include high spatial resolution especially in the dental imaging, high volume coverage, ability to perform fluoroscopy or angiography in conjunction with tomography, and ability to monitor a temporally evolving process [1]. The advantages are counterbalanced with the lower contrast resolution because of the x-ray scatter in cone-beam acquisition, slower decay time of scintillation material, and longer time scan
The basic idea of the Multi-slice Computed Tomography (MSCT) is to widen the x-ray source with several detectors in rows so that the data can be gathered of more than a slice a time thus reduces the time of scanning. From the first establishment till this day, the MSCT systems had change in so many aspects. The advancements of the systems are to fulfill the medical needs and had brings a lot of convenience to the clinical fields. By producing the 3D image, the MSCT give a great help in diagnosis of new clinical applications such as heart and vascular CT application, orthopedics and trauma imaging, comprehensive brain and stroke assessment and many more. From this assignment, the topics that would be discusses regarding the …show more content…
This mechanism is very helpful to distinguish the materials with the same HU value that cannot be distinguished by the conventional CT. The HU value are the indicator that were used to differentiate between the bone, soft tissues, fat, bone and muscle but some materials in body have almost the same HU value. As example, intracranial hemorrhage can have the same attenuation as dilute contrast of diffuse parenchymal mineralization (Ginat, D& Gupta,R. 2014). Rather than scanning the subject multiple times at different energies to get the desired result, this mechanism would solve the problem by producing different energies at a single scan.
4.0 MEASUREMENT TECHNIQUES
There are modes in acquiring the data, which are the axial scanning and the helical scanning. Axial scanning use the “step-and-shoot” technique where the number of images acquired during an axial scans corresponds to the number of active detector slices ( Ulzheimer, S., & Flohr, T.). Whereas, the spiral/helical scanning is characterized by continuous gantry rotation and continuous data acquisition while the patient table is moving at constant speed ( Ulzheimer, S., & Flohr, …show more content…
These developments give relatively low-cost, high quality, large area of flat-panel detector arrays. Other advantages of the flat panel include high spatial resolution especially in the dental imaging, high volume coverage, ability to perform fluoroscopy or angiography in conjunction with tomography, and ability to monitor a temporally evolving process [1]. The advantages are counterbalanced with the lower contrast resolution because of the x-ray scatter in cone-beam acquisition, slower decay time of scintillation material, and longer time scan