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Abstrak :
[ABSTRAK
Tujuan dari penelitian ini adalah mengevaluasi akurasi perencanaan dan pemberian perlakuan volumetric modulated arc therapy (VMAT) menggunakan rekomendasi AAPM Task Group (TG) 119 di Departemen Radioterapi MRCCC Siloam Hospitals Semanggi. TG 119 menetapkan dua tes pendahuluan dan lima tes menyerupai kondisi klinis, serta confidence limit (CL) sebagai nilai standar pengujian. Perencanaan intensity modulated radiation therapy (IMRT) dan VMAT dibuat lokal mengikuti preskripsi dosis dan sasaran perencanaan yang ditetapkan oleh TG 119, kemudian hasil perencanaan lokal dibandingkan dengan hasil TG 119. Pengukuran dosis titik dari pemberian perlakuan IMRT dan VMAT pada daerah dosis tinggi dan rendah diukur menggunakan tiga bilik ionisasi dengan volume aktif yang berbeda, sedangkan pengukuran dosis penampang menggunakan detektor 2D array, distribusi dosis penampang dianalisa dengan kriteria indeks gamma 3 %, 3 mm dan 2 %, 2 mm. CL hasil pengukuran dosis titik IMRT pada daerah dosis tinggi dan rendah 1.06 % dan 0.82 % (CC01), 1.19 % dan 1.58 % (CC13), 1.37 % dan 3.02 % (FC65G). Untuk VMAT 1.47 % dan 1.17 % (CC01), 1.71 % dan 1.95 % (CC13), 2.08 % dan 3.96 % (FC65G). Hasil pengukuran menggunakan bilik ionisasi CC01 dan CC13 mampu memenuhi kriteria yang ditetapkan TG 119 dibawah 3 %, sedangkan bilik ioisasi FC65G tidak memenuhi kriteria tersebut. Hasil CL analisa indeks gamma IMRT dengan kriteria gamma 3 %, 3 mm dan 2 %, 2mm sebesar 3.68 dan 11.71 (96.32 % dan 88.29 % pass), sedangkan untuk VMAT sebesar 1.44 dan 6.33 (98.56 % dan 93.67 % pass), kedua hasil indeks gamma tersebut masuk dalam kriteria TG 119 dibawah 12.4. Berdasarkan hasil tersebut, rekomendasi TG 119 dapat diimplementasikan untuk menguji akurasi perencanaan dan pemberian perlakuan VMAT, hasil tersebut juga menunjukkan keakurasian yang cukup dari perencanaan dan pemberian perlakuan VMAT di institusi lokal.

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ABSTRACT
The purpose of this study was to evaluate the accuracy of treatment planning and delivery of Volumetric Modulated Arc Therapy (VMAT) using recommendation of AAPM Task Group (TG) 119 in the Department of Radiotherapy MRCCC Siloam Hospitals Semanggi. TG 119 establishes two preliminary tests and five tests resemble a clinical condition, as well as the confidence limit (CL) as a benchmark data. Dose prescriptions and planning objectives recommended by TG 119 report were followed to generate Intensity Modulated Radiation Therapy (IMRT) and VMAT treatment planning, and then the local planning results compared with the results of TG 119. Point dose measurements were done using three ionization chambers with different active volume at high dose and low dose regions. The planar dose measurements were measured using a 2D detector array and the planar dose distribution was analyzed for percentage of points passing the gamma criteria of 3 %, 3 mm and 2 %, 2 mm. For IMRT plans, the CLs obtained for point dose measurement in areas of high and low doses were 1.06 % and 0.82 % (CC01), 1.19 % and 1.58 % (CC13), 1.37 and 3.02 % (FC65G), whereas a value of 1.47 and 1.17 % (CC01), 1.71 % and 1.95 % (CC13), 2.08 % and 3.96 % (FC65G) for CL VMAT. Point dose measurement results using ion chamber CC01 and CC13 were able to meet the criteria set by TG 119 below 3 %, while for ion chamber FC65G could not meet these criteria. From gamma analysis, CL IMRT for gamma criteria 3 %, 3 mm and 2 %, 2 mm were 3.68 and 11.71 (96.32 % and 88.29 % pass), while for VMAT were 1.44 and 6.33 (98.56 % and 93.67 % pass), gamma index results falls within the criteria TG 119 under 12.4. Based on the results, TG 119 recommendations can be implemented on commissioning VMAT treatment planning and delivery, these results also indicate adequate accuracy of VMAT treatment planning and delivery in local institution, The purpose of this study was to evaluate the accuracy of treatment planning and delivery of Volumetric Modulated Arc Therapy (VMAT) using recommendation of AAPM Task Group (TG) 119 in the Department of Radiotherapy MRCCC Siloam Hospitals Semanggi. TG 119 establishes two preliminary tests and five tests resemble a clinical condition, as well as the confidence limit (CL) as a benchmark data. Dose prescriptions and planning objectives recommended by TG 119 report were followed to generate Intensity Modulated Radiation Therapy (IMRT) and VMAT treatment planning, and then the local planning results compared with the results of TG 119. Point dose measurements were done using three ionization chambers with different active volume at high dose and low dose regions. The planar dose measurements were measured using a 2D detector array and the planar dose distribution was analyzed for percentage of points passing the gamma criteria of 3 %, 3 mm and 2 %, 2 mm. For IMRT plans, the CLs obtained for point dose measurement in areas of high and low doses were 1.06 % and 0.82 % (CC01), 1.19 % and 1.58 % (CC13), 1.37 and 3.02 % (FC65G), whereas a value of 1.47 and 1.17 % (CC01), 1.71 % and 1.95 % (CC13), 2.08 % and 3.96 % (FC65G) for CL VMAT. Point dose measurement results using ion chamber CC01 and CC13 were able to meet the criteria set by TG 119 below 3 %, while for ion chamber FC65G could not meet these criteria. From gamma analysis, CL IMRT for gamma criteria 3 %, 3 mm and 2 %, 2 mm were 3.68 and 11.71 (96.32 % and 88.29 % pass), while for VMAT were 1.44 and 6.33 (98.56 % and 93.67 % pass), gamma index results falls within the criteria TG 119 under 12.4. Based on the results, TG 119 recommendations can be implemented on commissioning VMAT treatment planning and delivery, these results also indicate adequate accuracy of VMAT treatment planning and delivery in local institution]

Abstrak :
Saluran kabel tegangan tinggi banyak digunakan pada pengembangan sistem transmisi tenaga listrik di area perkotaan di Indonesia. Terdapat risiko-risiko yang dianalisis sebelum pelaksanaan konstruksi, umumnya dengan mempertimbangkan Rencana Usaha Pembangunan Tenaga Listrik (RUPTL), Rencana Tata Ruang Wilayah (RTRW), dan kemampuan kontraktor dalam menjalankan proyek. Dengan melakukan pengelolaan risiko tersebut, masih terjadi keterlambatan proyek akibat terjadinya kegagalan komisioning. Tujuan dari penelitian ini adalah untuk menjawab risiko-risiko apa saja yang berpengaruh terhadap kegagalan komisioning dan bagaimana melakukan pengelolaan serta memberikan respons Ketika risiko-risiko tersebut terjadi. Penelitian ini menggunakan analisis kuantitatif untuk melakukan identifikasi probabilitas risiko yang dapat berdampak pada komisioning, dan tanggapan pakar dengan melakukan survei, focus group discussion, dan wawancara untuk mendapatkan hasil yang obyektif dan solusi yang efisien. Hasil akhir dari penelitian ini adalah untuk mendapatkan pemetaan risiko untuk mengatasi terjadinya kegagalan dalam komisioning SKTT. ......Underground cable is rapidly use in the development of electrical transmission system in urban area in Indonesia. There are risks that being analyzed before the construction begin, commonly involved Electric Power Development Business Plan (Rencana Usaha Pembangunan Tenaga Listrik /RUPTL), Spatial Plans (Rencana Tata Ruang Wilayah /RTRW), and the contractor’s capability to handle the project. However, there are still possibilities of delays that occur because of commissioning failure. The objective of this paper is to answer what are the risks that are influential to the commissioning failure and how to manage and respond when those risks come to occur. This paper uses quantitative analysis to identify the probability of risks that may impact the commissioning, and expert judgment by doing survey, focus group discussion, and interview to gain the most objective and efficient solution. The result of this analysis is to have the risk register to overcome commissioning failure.