Fatimah Fatimah
Jurusan Teknik Radiodiagnostik dan Radioterapi Poltekkes Kemenkes Semarang

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PENGARUH VARIASI TIME REPETITION (TR) TERHADAP KUALITAS CITRADAN INFORMASI CITRA PADA PEMERIKSAAN MRI LUMBALSEKUENS T2 FSE POTONGAN SAGITAL Syafrudin Nizar; Fatimah Fatimah; Irwan Kartili
Jurnal Imejing Diagnostik (JImeD) Vol 5, No 2: July 2019
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v5i2.4473

Abstract

Background : TR (Time Repetition) is an MRI parameter. TR controls the amount of longitudinal magnetization recovery before the next RF pulse. TR parameter is one of parameters that can affect image quality and image information. Long TR arrangements can increase SNR (Signal To Noise Ratio), CNR (Contrast To Noise Ratio) and provide better contrast, but increase the examination time. The purpose of this research is to know the effect of TR to image quality, difference of image information and TR optimal on MRI Lumbal sequence T2 FSE sagittal.Methods : The type of this research is quantitative research with experimental approach. The sample of research used is 6 probandus. TR variations used are TR 2000, 2500, 3000, 3500, 4000 with other parameters controlled. Aspects of image quality and image information values assessed in this study include Corpus Vertebrae, Discus Vertebrae, Cerebro Spinal Fluid (CSF), Medulla Spinalis, and Soft Tissue. Processing and analysis of image quality data is done by data normality test using shapiro-wilk, then test influence correlation pearson, linear regression and repeated anova. and for image information is done normality data test using shapiro-wilk, and friedman test.Result : The results of the test analysis showed that there was a TR effect on SNR image quality (p = 0.001) and CNR (p = 0.007) with (p 0.05) on all assessed organs. There is a difference in image information of MRI Lumbal T2 FSE sequence of sagittal pieces on Time Repetition variation with significance value (p 0.05). The optimal TR value on image quality is found on TR 4000 variation with mean of highest mean rank that is 42.82. While the optimal TR value on the image information is on the variation of TR 3000 with the highest mean mean rank is 3.25. TR 3000 is considered to produce better image information and is considered optimal on MRI Lumbal sequences of T2 FSE sagittal fragments compared to other TR variations with a duration of examination time of 2 minutes 30 seconds.Conclusion: Based on the results that good variation TR used on MRI Lumbal examination sequence T2 FSE sagital view is TR 3000 with best image qualit,  informative image information and short scanning time.
TREATMENT OF RADIOTHERAPY FOR SERVIKS CANCER WITH SEPARATION MORE THAN 20 CENTIMETERS USING COBALT-60 AT UNIT RADIOTHERAPY INSTALLATION RADIOLOGY RSUP DR. KARIADI SEMARANG Galang Harta Widjaya; Fatimah Fatimah; Sudiyono Sudiyono
Jurnal Imejing Diagnostik (JImeD) Vol 4, No 1: January 2018
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v4i1.3975

Abstract

Background: Cervical cancer is a type of cancer that emerges from the cervix. In the early stages of the tumor, treatment therapy will be performed surgically on organs affected by cancer cells, at an advanced stage will be done adjuvant therapy with curative goals through a combination of chemotherapy, surgery, and radiotherapy. In radiotherapy treatment is done with several techniques such as Brachyterapi, IMRT, 3DCRT, and 2D with external aircraft radiation modality with Linac (Linear Accelator) and Cobalt-60. For Brachyterapi (internal radiation) technique, the radiation source is directly placed on the target tumor by using the after loading technique generally, whereas the external radiation techniques of 3DCRT and IMRT are generally performed on external radiation plane using MLC (Multi leaf Collimator) by following the target shape tumors resulting from CT Simulator and TPS (Treatment Planning System) calculations. For IMRT alone the technique used is almost the same as 3DCRT technique. In cobalt-60 is generally used for the treatment of radiation therapy has an average energy of 1.25 MV. At 1.25 MV cobalt energy with 10x10 cm field area will get maximal energy at depth (d max) 0.5 cm and energy will decrease to half (d half) at a depth of 11 centimeter on water media. So that in planning of radiation using cobalt-60 plane have limited separation diameter less than 20centimeter.Methods: This type of research is qualitative with case study approach. the data was collected in October-December 2017 at radiotherapy Installation of Dr. Kariadi General Hospital Semarang by observation methodology, interview with Radiation Oncologist Specialist, Medical Physiciast and Radiographer. the data obtained from the study were analyzed by an interactive model, creating the interview transcripts subsequently reduced and processed within the type of open coding, given within the type of quotations then are often drawn conclusions.Result: The results of this study demonstrate that the management of cervix cancer radiation utilizing 2D procedure in radiotherapy installation of Dr. Kariadi General Hospital Semarang includes patient examination, planning medical physics, verification and radiation treatments. 2D techniques are used pupose to paliative radiation, homogenity of dose and the location of the target volume is close to the Organ at Risk. Field radiation evaluation was performed before first and third irradiation, patient evaluation after five times of radiation and  evaluation after 25rd radiation.Conclusion: The reason for doing the external radiation exposure of cervical cancer with tumor stage further consideration according to the Anatomical Pathology with pT3aN0M0 stage. So the purpose of palliative external radiation. with cervical cancer using cobalt-60 teletherapy air as much as 50 Gy with a fractionation s25 times, and each fractionation with doses of 2Gy. The reason for doing the external radiation exposure of cervical cancer with tumor stage further consideration according to the Anatomical Pathology with pT3aN0M0 stage. So the purpose of palliative external radiation. with cervical cancer using cobalt-60 teletherapy air as much as 50 Gy with a fractionation 25 times, and each fractionation with doses of 2Gy. The reason for doing the external radiation exposure of cervical cancer with tumor stage further consideration according to the Anatomical Pathology with pT3aN0M0 stage. So the purpose of palliative external radiation