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PENGARUH PENGGUNAAN PARAMETER NUMBER SCAN AVERAGE TERHADAP SIGNAL TO NOISE RATIO DAN SCAN TIME PADA PEMERIKSAAN MAGNETIC RESONANCE IMAGING: STUDI LITERATURE REVIEW Kadek Agus Cahya Pramana; Ni Putu Rita Jeniyanthi; I Bagus Gede Dharmawan
JRI (Jurnal Radiografer Indonesia) Vol. 5 No. 1 (2022)
Publisher : Perhimpunan Radiografer Indonesia (PARI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55451/jri.v5i1.108

Background : Signal to Noise Ratio (SNR) is a comparison of the magnitude of the signal amplitude and the magnitude of the amplitude of noise an MRI image that can be used to measure the quality of an MRI image. SNR can be increased by increasing the value of the number scan average (NSA). By increasing the NSA, the SNR will also increase, the scan time will be longer and cause motion artifacts. The purpose of this study was to determine the effect of using the parameter Number Scan Average on the Signal to Noise Ratio and Scan Time on examinations using Magnetic Resonance Imaging modalities. Methods: This study uses a descriptive qualitative method with a study approach literature review regarding the effect of using the parameter Number Scan Average on the Signal to Noise Ratio and Scan Time in the examination using Magnetic Resonance Imaging modalities. Results: The use of variations in NSA values has an effect on SNR and scan time. Giving high value of the NSA will increase the value of the SNR in the image but, the scan time will be longer which affects the quality of the resulting image.

Analisis Perbandingan Kualitas Citra Pada Pemeriksaan Mri Wrist Joint Menggunakan Knee Coil Dan Flex Coil Kadek Yuda Astina; I Bagus Gede Dharmawan; I Putu Bagus Pudja Erdika
Journals of Ners Community Vol 13 No 1 (2023): Journals of Ners Community
Publisher : Fakultas Ilmu Kesehatan Universitas Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55129/jnerscommunity.v13i1.2535

Knee Coil is a volume coil that can act as a transmitter and receiver at the same RF signal. Flex Coil is a surface coil which has a high SNR for a superficial examination (a small organ). The purpose of this research is to know comparison the value of signal to noise ratio (SNR) and higher the value of signal to noise ratio (SNR) at MRI Wrist Joint examination using Knee Coil and Flex Coil. Type of this research is quantitative experimental approach. The research data which 10 samples. Assessments are performed on the whole Wrist Joint and per anatomic criteria subjectively Carpometacarpal Joint, Midcarpal Joint, Radiocarpal Joint, Schapoid, Lunatum dan Triquetrum. Then the results of the data in Paired T-Test tested. Test results that there are differences in comparison the value of signal to noise ratio (SNR) at MRI Wrist Joint examination using Knee Coil and Flex Coil which has a smaller ρ Value (<0,05) per anatomic criteria and whole Wrist Joint. This is consistent with the results of the calculation of the average SNR value on the higher Knee Coil that is 143.84 because the coil acts as transreceiver and has two preamplifiers so as to improve the SNR. Conclusion: There is a difference in comparison the value of Signal To Noise Ratio (SNR) at MRI Wrist Joint examination using Knee Coil and Flex Coil.

Ultrasonography (USG) Accuracy in Diagnosing Breast Cancer; a Cross-sectional Study at Prima Medika General Hospital Denpasar Putu Dewi Ari Wulandari; I Bagus Gede Dharmawan
Jurnal Epidemiologi Kesehatan Komunitas Vol 8, No 1 : Februari 2023
Publisher : Master of Epidemiology, School of Postgraduate Studies, Diponegoro University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jekk.v8i1.17158

Background: Ultrasonography (USG) radiological examination can be an early detection of breast tumors before they develop into malignancy. The aim of our study was to determine the accuracy of USG examination in diagnosing breast cancer at Prima Medika Hospital.Methods: We conducted a cross-sectional study from January to December 2021 at Prima Medika Hospital Denpasar in patients who had symptoms of breast cancer had breast USG examinations and biopsy examinations of 51 samples. We collected data by tracing medical records and in descriptive analysis and cross-tabulation analysis to determine the sensitivity, specificity, positive predictive values and negative predictive values.Results: 72.5% of 51 patients were over 36 years old, 47.1% symptoms of a lump in their left breast. USG examination in detecting breast cancer has a sensitivity of 90.9%, a specificity of 93.1% then a positive predictive value of 92.9% and a negative predictive value of 90.1%.Conclusion: USG examination has a high accuracy in diagnosing breast cancer. Radiology specialists are expected to use USG examination as an early detection tool before conducting a histopathological gold standard examination.

Daya Terima Dan Kadar Zat Besi (Fe) Serundeng Ampas Kelapa Kadek Yuda Astina; I Bagus Gede Dharmawan; I Putu Bagus Pudja Erdika
Journals of Ners Community Vol 13 No 1 (2023): Journals of Ners Community
Publisher : Fakultas Ilmu Kesehatan Universitas Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55129/jnerscommunity.v13i1.2769

Knee Coil is a volume coil that can act as a transmitter and receiver at the same RF signal. Flex Coil is a surface coil which has a high SNR for a superficial examination (a small organ). The purpose of this research is to know comparison the value of signal to noise ratio (SNR) and higher the value of signal to noise ratio (SNR) at MRI Wrist Joint examination using Knee Coil and Flex Coil. Type of this research is quantitative experimental approach. The research data which 10 samples. Assessments are performed on the whole Wrist Joint and per anatomic criteria subjectively Carpometacarpal Joint, Midcarpal Joint, Radiocarpal Joint, Schapoid, Lunatum dan Triquetrum. Then the results of the data in Paired T-Test tested. Test results that there are differences in comparison the value of signal to noise ratio (SNR) at MRI Wrist Joint examination using Knee Coil and Flex Coil which has a smaller ρ Value (<0,05) per anatomic criteria and whole Wrist Joint. This is consistent with the results of the calculation of the average SNR value on the higher Knee Coil that is 143.84 because the coil acts as transreceiver and has two preamplifiers so as to improve the SNR. Conclusion: There is a difference in comparison the value of Signal To Noise Ratio (SNR) at MRI Wrist Joint examination using Knee Coil and Flex Coil.

Analisis Pemeriksaan Ct Scan Cardiac Dengan Klinis Coronary Artery Disease (Cad) Di Instalasi Radiologi RSUD Provinsi NTB Fitriah; I Kadek Yuda Astina; I Bagus Gede Dharmawan
JPNM Jurnal Pustaka Nusantara Multidisiplin Vol. 1 No. 2 (2023): July: Jurnal Pustaka Nusantara Multidisiplin
Publisher : SM Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59945/jpnm.v1i2.30

The heart is an important organ in the body because it has a vital role in maintaining human life. However, it cannot be denied that the heart can experience damage, one of which is Coronary Artery Disease (CAD), which is characterized by the presence of plaque in the coronary arteries so that the coronary arteries become narrow. There are several causes that can cause CAD, but this needs to be examined further to find out the main cause of the disease so that the treatment given can be appropriate and fast. One treatment that can be used to check CAD is via CT Scab Cardiac. However, the study regarding this examination has not been studied further, so researchers want to study the analysis of cardiac CT scan examinations with clinical Coronary Artery Disease (CAD) in the Radiology Installation of the NTB Provincial Hospital. The aim is to carry out an in-depth analysis of cardiac CT scan examinations with clinical Coronary Artery Disease (CAD) in the Radiology Installation of the NTB Provincial Regional Hospital, so that various information related to this matter can be known in depth. The research method used is qualitative with a case study approach. The data collection technique was carried out through observation, interviews and documentation from June to July 2023. The data collected was then analyzed in depth so that the research results showed that the CT Cardiac examination using the bolus tracking technique was carried out with 80 ml of contrast media and 40 ml of saline flush with The injection duration is 40 seconds and starts with a dual service AP Lateral topogram, calcium scoring scanning without contrast media, placing the locator 2 cm above the carina, placing the tracker on the descending aorta followed by cardiac scanning with several phases. The use of bolus tracking because it makes it easier for radiographers to carry out treatments in CAD with accurate results.

Teknik Pemeriksaan MSCT Angiografi Pulmonary pada Kasus Pulmonary Embolism di Rumah Sakit Universitas Udayana Cokorda Istri Emi Dwiyanti; I Made Lana Prasetya; I Bagus Gede Dharmawan
JPNM Jurnal Pustaka Nusantara Multidisiplin Vol. 1 No. 3 (2023): October: Jurnal Pustaka Nusantara Multidisiplin
Publisher : SM Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59945/jpnm.v1i3.36

Penelitian tentang teknik pemeriksaan MSCT Angiografi Pulmonary pada kasus Pulmonary Embolism di Rumah Sakit Universitas Udayana ini dilakukan pada dua subjek pasien yang berbeda yaitu pasien dengan terpasang Central Venous Catheter dan pasien yang tidak terpasang Central Venous Catheter, tujuan dari perbedaan subjek pasien tersebut yaitu untuk mengetahui perbedaan dari teknik pemeriksaan MSCT Angiografi Pulmonary pada kasus Pulmonary Embolism antara pasien yang terpasang Central Venous Catheter dengan pasien yang tidak terpasang Central Venous Catheter. Jenis penelitian ini merupakan penelitian kualitatif dengan pendekatan studi kasus. Subjek penelitian ini adalah dokter radiologi, radiografer, dan dokter pengirim pasien yang akan melakukan pemeriksaan MSCT Angiografi Pulmonary. Data dikumpulkan dengan cara observasi dan wawancara. Hasil penelitian tentang teknik pemeriksaan MSCT Angiografi Pulmonary pada kasus Pulmonary Embolism di Rumah Sakit Universitas Udayana diawali dengan memposisikan pasien tidur supine di meja pemeriksaan dengan posisi feet first, setelah itu kedua tangan pasien diletakkan disamping kepala pasien, posisikan Mid Sagital Plane (MSP) sejajar dengan lampu indikator longitudinal, sementara lampu indikator horizontal sejajar dengan Mid Coronal Plane (MCP) pasien, lampu isocenter berada di symphysis menti. Selanjutnya dilakukan scanning pre kontras terlebih dahulu, setelah scanning pre kontras selesai dilanjutkan dengan scanning angiografi pulmonary. Perbedaan yang didapatkan dari teknik pemeriksaan MSCT Angiografi Pulmonary pada kasus Pulmonary Embolism antara pasien yang tidak terpasang CVC dengan pasien yang terpasang CVC yakni terletak pada pengaturan protokol Smartprep Rx, akses penyuntikan media kontras dan NaCl, pengaturan flow rate dan volume media kontras serta NaCl yang digunakan, dan pengaturan pressure injector.

Evaluasi Perbandingan Informasi Citra MRI Brain Sekuen Diffusion Weighted Imaging Irisan Axial Pada Variasi Nilai SENSE di Instalasi Radiologi RSUD Provinsi NTB I Made Lana Prasetya; I Bagus Gede Dharmawan; I Wayan Ariec Sugiantara; Nandika A.J Mokoagow
An-Najat Vol. 1 No. 4 (2023): NOVEMBER : An-Najat: Jurnal Ilmu Farmasi dan Kesehatan
Publisher : STIKes Ibnu Sina Ajibarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59841/an-najat.v1i4.551

Magnetic Resonance is a radiodiagnostic examination tool in the field of radiology, especially in the medical world. Diffusion Weighted Imaging is a method to assess molecular function and microarchitecture of the human body. DWI signal contrast can be measured with visible diffusion coefficient maps and serves as a tool for treatment response evaluation and disease progression assessment. Parallel imaging techniques involve phased array coils to process signals from a slice, then combine these slices to form an image, reducing scan time by reducing the acquired K-space lines. The formation of Sensitivity Encoding (SENSE) can shorten the insertion of K-space. This study aims to test variations of SENSE values 2.0 and 2.5 in MRI brain examinations with axial DWI sequences that are capable of visualizing anatomical information with fast scan times without compromising image quality, resulting in optimal images. This research is quantitative with an experimental approach. The sample consists of 10 patients using voluntary sampling of MRI Brain with axial DWI sequence and varying SENSE values from July to August 2023. Data were collected through questionnaires filled out by three radiology specialists at the Radiology Installation of the Provincial Hospital of West Nusa Tenggara (RSUD Provinsi NTB). The results of the Wilcoxon test showed a significant difference in anatomical information in MRI brain with axial DWI sequences between SENSE values of 2 and 2.5, with a p-value of 0.012. The mean rank value results indicated a sum of ranks of 280.00 for the SENSE 2 value, demonstrating greater optimality compared to SENSE 2.5. This study concludes that there is a significant difference in anatomical information in MRI brain with axial DWI sequences between SENSE values of 2 and 2.5. SENSE 2 tends to provide more optimal information.

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