80 research outputs found
Structure Adjustment of Surface Dipole Antenna Elements for Body Imaging at 7 Tesla MRI
No full textIn ultra-high-field magnetic resonance imaging (UHF-MRI), body imaging suffers from B1 inhomogeneity due to relatively short wavelength. A range of new radio frequency (RF) coil designs has been proposed to overcome this problem. As previously reported, dipole antenna had been proposed to address this B1+ inhomogeneity problem for body imaging. In this paper, structural adjustment of dipole antenna has been tried for parallel transmission to improve overall B1+ homogeneity. Surface dipole antennas with several structures are tried and compared with our top-hat dipole antenna array reported previously. Also, static RF shimming was employed to evaluate the B1 uniformity
Classification of Texture Parameters Between Normal And Tumor Portions of a CT Scan Image
No full textM.E. (Electronic Instrumentation and Control)Medical imaging has provided a non invasive way of extracting information from the internal organs of humans. Tumor diagnosis is one of the key factors for which medical imaging such as computer tomography CT scan are used. However medical images such as CT scan may not provide accurate information of the tumor or may be the information is based on human perception. Hence medical images have to be analysed in order to diagnose tumors accurately.
Texture analysis of a CT scan image may help in differentiating between normal and the tumor portions. In this thesis we have used abdominal CT scan with tumor region marked on them. Texture parameter were calculated using the statistical approach proposed by haralick[1] called grey-level co-occurrence matrix(GLCM). Further a comparison was carried out between normal and the tumor portion texture parameters using box-plots.
On the basis of the box-plot comparison further classification between normal and the tumor portion using values of texture parameters was performed .SVM classifier with different kernel functions was used for classification purpose.
Further more we used a image enhancement technique called the adaptive histogram equalization technique to enhance the contrast of the CT scan images. The texture parameters calculated from the normal and the tumor portion of the enhanced images were subjected to the same procedure as the original images.
This study investigates the texture features which are able to discriminate between normal and the tumor portions in a CT scan image both original and enhanced
Like
No full textThe author writes about the development of Like. Like was the Thai folk drama. Originally, it was the Muslim chanting which was adopted and tranformed into Thai culture
Hin tang kap hai hin nai Lao pen fimu ""Khamu"" ru khrai kan nae?
No full textThe article features historical importance and development of magaliths and stone jars in Lao and Northeastern Thailand. Megaliths, the author argues, were used as tombstones in prehistorical societies. Meanwhile, stone jars found on the ""Plains of Jars"" were used in the funerals about 3,000 years ago. The author contends that the Khamu ethnic in this area was the creator of these megaliths and stone jars
Nai talat mi hapre kap phaengloi
No full textThe author characterizes the ancient markets existing in Ayutthaya and Rattanakosin period. In addition to providing the markets' name, he also traces the locations of these ancient markets
The spirit of Bangkok
No full textIn this article, the author highlights the history of Bangkok. He illustrates the settlement of Thailand's capital city in Bangkok in 1782. The article focuses on the Rattanakosin Archipelago, where located old palaces and royally supported Buddhist temples
Chu ban nam muang : Nakhon Pathom lae Phra Pathom Chedi
No full textIn this article, the author clarifies that Phra Pathom Chedi is not the first pagoda in Thailand as its name implies. He also explains that Nakhon Pathom, the province in which Phra Pathom Chedi is located is not the first city in Thailand as well
Nakhon Si Thammarat
No full textThe author traces the history of Nakhon Si Thmmarat, a province located in southern Thailand. He also provides an account of its cultural heritages. Nakhon Si Thammarat was an independent kingdom during premodern age. It was known in various names depending on its historical moments. It was called Tambralinga during its earliest epoch and later was named Krung Sithammasok. It was incorporated into the Thai Kingdom in Ayutthaya period and its name was finally changed to Muang Nakhon Si Thammarat
Collateral Development of Invasive Pulmonary Aspergillosis (IPA) in Chronic Obstructive Pulmonary Disease (COPD) Patients
No full textKhun Phuphan boeng Isan
No full textIn this article, the author gives an overview of Northeastern Thailand, the region which is widely known as ""Isan"". This includes brief information on Isan's geographical, cultural, anthropological and historical characteristics. Geographically, the Northeastern region is largely mountainous and incorporates several plateaus in its boundary. The Phuphan is one of the major mountains in the region. The Isan culture is unique. Its history could be traced back to thousands of years ago. This area is also homes for people of different races and ethnic groups
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