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Standarisasi Indeks Eksposur untuk Memenuhi Kriteria Anatomi dan Aspek Teknis pada Radiografi Thorax Pediatrik Mukhammad Lutfan Nurrokhim; Dwi Rochmayanti; Ari Budiono
Jurnal Imejing Diagnostik (JImeD) Vol 7, No 1: JANUARY 2021
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v7i1.5937

Abstract

Background: Computed Radiography has an exposure index that used as an exposure indicator. But on radiographic examination, exposure index value  sometimes ignored, and in  the preliminary survey of pediatric chest examination resulting a large exposure index range. The aim of this study is to know the profile of exposure index value and the setting of the exposure factors, the assessment of anatomy criteria and technical aspect, and the right exposure factors such as kV and mAs on pediatric chest examination.Methods: The type of this research is descriptive quantitative. The research was done by collecting data related to pediatric chest radiograph (≤ 2 years) the value of exposure index was recorded, then the radiograph was assessed using questionnaires that filled by one respondent who is a radiologist. The data was analyzed by displaying the data of exposure index and anatomy criteria from questionnaires into the table form, and then conducted a descriptive analysis to be drawn conclusions.Results: The results showed the profile of exposure index value and the setting of the exposure factor  has a fairly large exposure index range of 1084 – 2175, using 40 kV and 10 mAs and the collimation still often exceeds the object. Then for the assessment of the thorax anatomical criteria and the technical aspect overall was “Good Enough”, and the right exposure factors, that is: at 6 and 7 cm chest thickness was using 60 kV and 1,6 mAs; at 11 cm chest thickness was using 60 kV and 2 mAs, FFD 100 cm, and the setting of collimation as wide as object, the exposure index generated in the normal range that is 1251 – 1382.Conclusion: The right exposure factors on pediatric chest examination, that is: at 6 and 7 cm chest thickness was using 60 kV and 1,6 mAs; at 11 cm chest thickness was using 60 kV and 2 mAs, FFD 100 cm, and the setting of collimation as wide as object. 
FAKTOR DETERMINAN KOLIMASI, UKURAN IMAGING PLATE DAN DELAY TIME PROCESSING TERHADAP EXPOSURE INDEX Dwi Rochmayanti; Darmini Darmini; Marichatul Jannah
Jurnal Riset Kesehatan Vol 6, No 2 (2017): NOVEMBER 2017
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1261.443 KB) | DOI: 10.31983/jrk.v6i2.2910

Abstract

Exposure index merupakan parameter yang penting terhadap kualitas citra, meskipun bukan merupakan hal teknis yang dapat menentukan dosis pada pasien, tetapi menjadi rujukan dalam mengestimasi dosis yang diterima oleh pasien. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang mempengaruhi nilai exposure index dengan menggunakan phantom thoraks. Faktor yang diteliti meliputi kolimasi, ukuran imaging plate yang digunakan serta delay time processing. Penelitian kuantitatif ini dilakukan dengan pendekatan eksperimen. Ukuran kolimasi yang digunakan meliputi dua ukuran yaitu 35x35 cm dan 35x43 cm. Untuk luasan kolimasi menggunakan lima variasi ukuran yaitu 30x30 cm, 30x35 cm, 35x35 cm, 30x40 cm, dan 35x43 cm. Delay time processing sebesar 0 menit, 10 menit, dan 20 menit. Semua data nilai exposure index dicatat untuk selanjutnya dilakukan pengolahan data dan dilakukan analisis dengan uji korelasi. Dari hasil penelitian didapatkan bahwa delay time processing memberikan pengaruh yang dominan dibandingkan dengan variabel yang lain, dengan nilai signifikansi sebesar 0.000 less than 0.05, sedangkan besar pengaruh adalah 73%. Adapun ukuran imaging plate yang digunakan tidak memberikan efek yang jelas terhadap perubahan nilai exposure index. Faktor kolimasi memberikan pengaruh sebesar 49%, sedangkan untuk ukuran imaging plate tidak ada perbedaan pengaruh terhadap exposure index.
HANDS-ON PENGUJIAN DAN EVALUASI SISTEM KOLIMATOR SEBAGAI UPAYA KESELAMATAN RADIASI RADIOLOGI Yeti Kartikasari; Dwi Rochmayanti; Siti Masrochah; M.Irwan Katili
Jurnal LINK Vol 17, No 2 (2021): NOVEMBER 2021
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.671 KB) | DOI: 10.31983/link.v17i2.6677

Abstract

Pengujian kolimator merupakan factor yang cukup penting dan menjadi salah satu dalam parameter pengujian pesawat sinar X utnuk mendapatkan perijinan dari bapeten. Akan tetapi dilapangan, hal ini menjadi sedikit terabaikan karena tidak berhubungan secara langsung dengan produksi sinar-X, oleh karena itu dilakukan kegiatan pengabdian masyarakat dalam bentuk pelatihan dan pendampingan pengujian sistem kolimator. Kegiatan ini bertujuan Untuk memberikan pelatihan bagi radiografer dalam memastikan kinerja sistem kolimator pada pesawat sinar X, dalam rangka upaya keselamatan radiasi pada unit pelayanan radiologi Rumah Sakit di Kota Semarang. Sasaran kegiatan ini adalah radiografer di Instalasi Radiologi pada Rumah Sakit di Kota Semarang. Kegiatan dikemas dalam bentuk kegiatan pelatihan dan pendampingan yang memungkinkan para peserta mempraktekan secara langsung, sehingga materi pengabmas diharapkan dapat lebih dipahami dan diterapkan di masing-masing pesawat radiologi oleh para peserta. Materi pelatihan meliputi penjelasan mengenai quality assurance dari pesawat sinar-X, khususnya system kolimator dan dilanjutkan dengan praktek pengujian secara langsung. Hasil akhir pengabmas adalah berupa buku petunjuk pengujian. Sebagai bentuk tindak lanjut dilakukan pendampingan bagi peserta untuk melakukan di tempat masing-masingsebagai bentuk dari upaya keselamatan radiasi.
RADIATION EXPOSURE PROFILE IN RADIOLOGICAL DEPARTMENT TO SUPPORTING PROTECTION PROGRAMS IN HOSPITALS / RADIOLOGICAL CLINIC LABORATORY IN SEMARANG CITY Dwi Rochmayanti; Siti Daryati; Darmini Darmini; Yeti Kartikasari
Jurnal Imejing Diagnostik (JImeD) Vol 5, No 1: January 2019
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v5i1.3999

Abstract

Background: All acts of radiation use, both for diagnostics, therapy and nuclear medicine, must go through a process of justification, limitation and optimization so that patients, officers and the surrounding environment get as much diagnostic benefit as possible with the smallest possible radiation risk. Some problems that arise in the Hospital / clinic, often ignore and do not pay attention to work exposure safety factors. The purpose of this study was to determine the profile of occupational radiation exposure and the effectiveness of radiation shielding in the radiology department of the Semarang city  then compared to the reference dose to determine the optimization of radiation protection.Methods: The type of research conducted is quantitative research with a survey and observational approach. Exposure measurements were carried out in 5 radiology department, which included 3 hospitals and 2 clinical laboratories. Documents and room observations are also carried out. For the effectiveness of the radiation barrier it is also measured before and after the radiation shielding by using a  surveymeter tool. The results data are then presented in descriptive analyses.Results: The results of the study of radiation exposure profiles in five radiology institutions, four institutions there was radiation exposure recorded on the  surveymeter tool, with the largest exposure value was 0.099 mSv / h (still below the safe limit of 1 mSv / year). Only one hospital is safe, and there are no leaks.Conclusions: The effectiveness of the radiation retaining wall, four hospitals have a barrier level equal to 1 mm Pb at 80 kVp irradiation, and 1 hospital (RSJ) has a radiation barrier equivalent to 0.5 mmPb.
PERBEDAAN INFORMASI CITRA ANATOMI SEKUEN DIFFUSION WEIGHTED IMAGING (DWI) ANTARA PENGGUNAAN PROPELLER DENGAN TANPA PROPELLER PADA PEMERIKSAAN MRI BRAIN DENGAN KASUS STROKE Yeti Kartikasari; M. Irwan Kartili; Dwi Rochmayanti; Nindya Aprilia
Jurnal Imejing Diagnostik (JImeD) Vol 6, No 1: January 2020
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v6i1.5565

Abstract

Background: Stroke is a brain disease where an acute nerve function is occurred due to the cerebral vascular disorders. To establish a diagnosis the stroke, it can be identified by employing the Diffusion Weighted Imaging (DWI) sequence in the MRI examination. Artifacts still exist on the MRI image which in turn reduce the resolution when using the DWI sequence. Adding the PROPELLER data acquisition method in the DWI sequence possibly improves the quality of brain images. The purpose of this study is to know the difference on the quality of anatomical image information between the DWI sequences with PROPELLER and without PROPELLER methods, and to determine adequate anatomical image appearance that created in amongst of the two methods, specifically for the stroke disease.Methods: this research is quantitative research with experimental approach. This study was conducted using MRI 1.5 T at Bethesda Hospital Yogyakarta. Data were 16 images from 8 patients using DWI sequences using PROPELLER without PROPELLER on MRI Brain examination with stroke. The results of the image were evaluated on 7 criteria: cortex cerebri, basal ganglia, thalamus, pons, cerebellum, stroke (infarction) and artifacts using questionnaires given to 3 respondents. Data analysis was done by Wilcoxon test to know the difference of anatomical image information on DWI sequence using PROPELLER without PROPELLER and to know better anatomical image information from both sequences seen from mean rank value.Results: The results shown, there is a significant difference on the quality of anatomical image information and the artifacts between the use of DWI sequence with and without PROPELLER methods ( 0.05). Based on the mean rank results, the DWI PROPELLER sequence has a higher mean rank value 4.50 compared to the DWI sequence without PROPELLER 0.00.Conclusions: The DWI PROPELLER sequence has better image results compared to the DWI sequence without PROPELLER.
Analisis Perubahan Parameter Number of Signals Averaged (NSA) Terhadap Peningkatan SNR dan Waktu Pencitraan pada MRI Dwi Rochmayanti; Thomas Sri Widodo; Indah Soesanti
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 1: Februari 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1057.428 KB)

Abstract

Abstract—A study about the influence of NSA shift to SNR to identify the existence of NSA shift to SNR and scan time had performed. The study aims to determine the alteration value of SNR when NSA was changed for every number and to obtain the NSA value which has more optimum image quality. The study was performed in Telogorejo Hospital at Semarang with MR modalities AirisII Hitachi 0.3 tesla by shifting NSA from 1 to 5 in cervical vertebrae (neck) sagittal T1 weighted with spin echo sequence. The SNR of five images were calculated with Matlab tool. SNR value was obtained by measuring the ROI at body of vertebra, spinal cord area and discus intervertebra to attain the signal average value. Experiment results show that the greater the NSA, the SNR is better and scan time is longer. SNR of the organ corpus, medulla spinalis and diskus intervertebra is increases from NSA 1 to 2 is 51%. When the NSA is raised to 3, the SNR increase is 89%, for NSA 4 the SNR increase is 99%, for NSA 5 the SNR increase is 102% . To get an SNR up to 100%, the NSA 4 is used. Meanwhile, to get images with good SNR and imaging duration is not long, the NSA 3 is used. Intisari—Telah dilakukan penelitian perubahan NSA terhadap SNR yang bertujuan untuk mengetahui pengaruh perubahan NSA terhadap SNR. Penelitian dilakukan di RS Telogorejo Semarang dengan Modalitas MRI Airis II Hitachi 0,3 tesla, dengan cara merubah NSA 1 sampai dengan 5 pada daerah leher (servikal) dengan potongan sagital dengan sekuens spin echo dan pembobotan T1. Dari citra tersebut dicari nilai intensitas dan noise untuk mendapatkan SNR pada masing-masing citra. ROI pada daerah korpus, medulla spinalis dan diskus intervertebra untuk mendapatkan signal rata-rata untuk dibandingkan dengan ROI pada background. Dari penelitian didapatkan hasil, semakin besar NSA yang digunakan SNR juga semakin meningkat. Prosentase kenaikan rata-rata dari badan vertebra (corpus), medulla spinalis dan diskus intervertebra adalah dari NSA 1 ke 2 adalah 51%, NSA dinaikkan menjadi 3 prosentase kenaikan 86%, NSA 4 kenaikannya 99% dan NSA 5 menjadi 102%. Untuk mendapatkan SNR mendekati 100%, maka NSA yang digunakan adalah 4. Sedangkan untuk mencari citra dengan SNR yang baik dan waktu pencitraan yang tidak lama, sebaiknya digunakan NSA 3.
Pengolahan Limbah Jelantah Menjadi Lilin Aromaterapi Sebagai Pendongkrak Potensi Ekonomi Dan Peningkatan Kesehatan Masyarakat Agustina Dwi Prastanti; Bagus Abimanyu; Dwi Rochmayanti; Rini Indrati; Darmini Darmini
MATAPPA: Jurnal Pengabdian Kepada Masyarakat Volume 5 Nomor 2 Tahun 2022
Publisher : STKIP Andi Matappa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31100/matappa.v5i2.1801

Abstract

The purpose of this training is to provide education on the use of used cooking oil household waste into aromatherapy candles through intensive assistance to improve the economic level and public health. The community service method used is lecture, discussion and direct practice. The community service element involves the head of the PKK RT, RW and health cadres. The direct practice of processing household waste cooking oil by the community obtained results in the form of aromatherapy candles where the used cooking oil was cleared up first as the basic ingredient. Aromatherapy candles are ready to use after a period of 2 (two) days to get maximum wax density. The benchmark for the success of making aromatherapy candles from used cooking oil is assessed from candles that can be used as lighting when the lights go out as well as aromatherapy as well as room decoration, repellent for flies, mosquitoes and other insects.