Bagus Dwi Handoko
Politeknik Kesehatan Kemenkes Semarang

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Optimalisasi Citra dalam Penghitungan Calsium Scoring dengan Variasi Scan Type dan Slice Thickness (Studi Pendahuluan Dilakukan Dengan Menggunakan Modifikasi Phantom Thorax di RS Telogorejo Semarang) Bagus Dwi Handoko; Ari Suwondo; Jeffri Ardiyanto
Jurnal Imejing Diagnostik (JImeD) Vol 1, No 1: January 2015
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v1i1.3152

Abstract

Background : Examination of Calcium scoring in Radiology Departement Telogorejo Hospital Semarang using CINE scan type and  recon phase images using a slice thickness of 2.5mm, this affect will be plaque with small size cann’t to calculate. Aim : The Purpose of this study was to determine the variation of parameters of calcium scoring MSCT scan examination right in calculating optimal plaque.Methods : The study was preceded by Pre experiments using a thorax phantom with an added 3-calcium artificial heart is likened to the RCA, LCX, LAD and have determined the weight and volume. Experiments with 10 patient samples by applying the best parameters from the pre experiment. Statistical analysis of the results of research conducted by Paired T-Test, while the assessment of the quality radiographs evaluated by an expert in this specialist radiology by providing anatomical criteria scores with 3 choices of items (not clear = 1, is quite clear = 2  and obvious = 3)Result : The volume of plaque is embedded in the thorax Panthom 900mm3. Results of pre experiments with hellical scan type and pitch of 0.5, 0.9, 1.3 in a score of plaque volume is 104mm3, 67mm3, 60mm3. While the scan type CINE with slice thickness 0.625mm, 1.25mm, 2.5mm produces a score of volume plaque is 880mm3, 878mm3, 867mm3. Further experiments were performed by applying parameters with the best result is CINE scan with variations slice thickness 0,625mm, 1.25mm, 2.5mm. To determine the best parameters assessment of image quality with the results on slice thickness 0.625mm was 2.2 (quite obvious), slice thickness 1,25mm scoring average of 2.7 (quite obvious), and slice thickness 2.5 mm average scoring 2.9 (obviously). While image noise on the slice thickness 0.625mm, 1.25mm, 2.5mm, namely 2.7(very high), 1.6 (low), 1.1 (low).Conclusions : Selected parameters that calculate optimal scoring calcium and low noise image for MSCT scan calcium scoring in Telogorejo Hospital Semarang is Scan type CINE with slice thickness variation 1,25mm
Analisis Variasi Ketebalan Kepala pada pemeriksaan Mastoid Proyeksi Axiolateral Metode Schuller terhadap Gambaran Anatomis Dartini Dartini; Galuh Negrawati; Bagus Dwi Handoko
Jurnal Imejing Diagnostik (JImeD) Vol 2, No 2: July 2016
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v2i2.3176

Abstract

Background: Axiolateral projection of mastoid examination with Schuller method using angle range of 25°-30° caudad according to Bontrager (2010). The difference thickness of the human’s head will cause range of angles of axiolateral projection of mastoid examination using Schuller projection. The inappropriate angle will affect the different anatomical information. Axiolateral projection of mastoid examination using Schuller projection in Radiology Installation of dr. Soetomo Hospital used an angle that is 25° for all patients with different thickness of the head. This study aims to determine the differences in anatomical image clarity on radiographic image of axiolateral projection of mastoid examination using Schuller method with an angle that is 25° with variations of head thickness between 12 to 14.5 cm.Methods: This research was a quantitative research with an experimental approach. Subjects of this reearch were 10 respondents. Data analyzed statistically by Kruskal Wallis test and Mann Whitney test.Results: The results showed that there was difference in anatomical image of axiolateral projection of mastoid examination with Schuller method with 25° angle. Result of statistical test to get optimal radiographic image of mastoid using Schuller method showed the significant value, which was 0,000. Differences in anatomical image was also shown on the assessment results from 10 respondents which most of respondents assess anatomical features on a 14.5 cm head thickness was very good.Conclusion: There were differences anotomical information of mastoid radiograph using schuller method with thickness variaton of head. Head thickness of 14.5 cm can show anatomical image of the mastoid air cells, bony labirinth, condyle mandible, temporomandibular joint (TMJ), Aacousticus the external meatus (MAE) and tegmen tympani. The CR angle should be considered based on head thickness.