• Title/Summary/Keyword: Total Body Irradiation

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Total Body Irradiation Technique : Basic Data Measurements and In Vivo Dosimetry (방사선 전신 조사 : 기본 자료 측정 및 생체내에서 선량 측정)

  • Choi Dong-Rak;Choi Ihl Bohng;Kang Ki Mun;Shinn Kyung Sub;Kim Choon Choo
    • Radiation Oncology Journal
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    • v.12 no.2
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    • pp.219-223
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    • 1994
  • This paper describes the basic data measurements for total body irradiation with 6 Mv photon beam including compensators design. The technique uses bilateral opposing fields with tissue compensators for the head, neck, lungs, and legs from the hip to toes. In vivo dosimetry was carried out for determining absorbed dose at various regions in 7 patients using diode detectors(MULTIDOSE,k Model 9310, MULTIDATA Co., USA). As a results, the dose uniformity of${\pm}3.5{\%}$(generally, within${\pm}10{\%}$can be achieved with out total body irradiation technique.

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A Study on the Dose Distribution for Total Body Irradiation using Co-60 Teletherapy Unit (Co-60 Teletherapy Unit를 이용한 전신조사의 선량분포에 관한 고찰)

  • Kim, Sung-Kyu;Shin, Sei-One;Kim, Myung-Se
    • Journal of Yeungnam Medical Science
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    • v.6 no.2
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    • pp.113-119
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    • 1989
  • In recent years there has been a growing interest in total body, hemibody, total lymphoid irradiation. For refractory leukemia or lymphoma patients, various techniques and dose regimens were introduced, including high dose total body irradiation for destruction of leukemic or bone marrow cells and immunosuppression prior to bone marrow transplantation, and low dose total body irradiation for treatment of lymphocytic leukemia or lymphomas. Accurate provision for specified dose and the desired homogeneity are essential before clinical total body irradiation. Purposes of this paper are to discuss calibrating Cobalt Unit in 3m distance using Rando Phantom, to compare calculated dose, calibrated dose, and compensating filters for homogeneous dose distribution in the head and neck, the lung, and the pelvis. Results were following. 1. Measured dose on the lung was 6% higher than on the abdomen. Measured dose on the head (10%) and neck (18%) were higher than the abdomen because of thinness. Pelvic dose was measured 12% less than the abdomen. Those data suggest that compensating filter was essential. 2. Measured dose according to distance was 3% less than calculated dose which suggest that all doses in clinical use should be compared with calculated dose for minimizing error.

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Study on Development of Acute Index Through Peripheral Blood Test in Total Body Irradiation Patients (방사선 전신조사 환자의 말초혈액 검사를 통한 급성장애 지표개발에 관한 연구)

  • Park Young Hwan
    • Journal of The Korean Radiological Technologist Association
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    • v.27 no.2
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    • pp.181-197
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    • 2001
  • Thus, among peripheral blood, the number of WBC decreased drastically for a certain period after total body irradiation with high dose radiation, and the levels of Seg. neutriphil and lymphocyte decreased significantly after irradiation in the lymphocyte

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Dose Distribution of Total Body Irradiation for Bone Marrow Transplantation in Leukemia (백혈병에서 골수이식을 위한 전신방사선조사시 선량분포 특성)

  • 김성규;김명세;신세원
    • Progress in Medical Physics
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    • v.7 no.2
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    • pp.47-55
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    • 1996
  • Total Body Irradiation(TBI) is one of the essential treatment modalities in bone marrow transplantation for leukemia and lymphoma. Various techniques and dose regimens were introduced with sevelal advantages and disadvantages. In TBI, lung block could reduce lung dose to 75% of original beam for decreasing lung dose with homogenous total body irradiation. Accurate provision for specified dose and the desired homogeneity are essential before clinical total body irradiation. When performed in total body irradiation, the problem obtain uniform dose distribution in brain, neck, lung, umbilicus, pelvis and leg. Authors compared to dose distribution with method 1 and method 2. The method 1 used compensating filters for homogeneous dose distribution(Minesota University Method). The method 2 used fixing frame made in aeryl developing authors. Results were following. 1. Method 1 was showed dose distribution from 95.6% to 100%, method 2 showed dose distribution from 95.4% to 100%. 2. Method 2 was showed different to 3.4% at skin region and midline in the brain. In the neck, showed different to 1.5%. In the umbilicus. showed different to 2.3%.

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Development of Total Body Irradiation Program (전신방사선조사 프로그램 개발)

  • Choi Byung Ock;Jang Ji Sun;Kang Young Nam;Choi Ihl Bohng;Shin Sung Kyun
    • Progress in Medical Physics
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    • v.16 no.3
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    • pp.130-137
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    • 2005
  • In total body irradiation (T81) for leukemia, we have a two methode. One is a AP (anterior-posterior) method and the other is a Lateral methode. Our hospital used lateral methode. T81 must consider about body contour, because of homogeneous dose distribution. For compensation about irregular body contour, we use compensator. For T81 treatment, we must be considered, accurate manufacture of compensator and accurate calculation of dose. We developed the automatic program for T81. This program accomplished for compensator design and dose calculation for irregular body. This program was developed for uses to use in a windows environment using the IDL language. In this program, it use energy data for each energy: TMR, output factor, inverse square law, spoiler, field size factor. This program reduces the error to happen due to the manual. As a development of program, we could decrease the time of treatment plan and care the patient accurately.

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Comparison of Distribution following Treatment Method in Total Body Irradiation (전신방사선조사에서 치료방법에 따른 선량분포 특성 비교)

  • 김성규;김명세;신세원
    • Progress in Medical Physics
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    • v.6 no.2
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    • pp.21-28
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    • 1995
  • In recent years there has been a growing interest in total body irradiation. For refractory leukemia or lymphoma patients, varions techniques and dose regimens were intridused, including high dose total body irradiation for destruction of leukemic or bone marrow cells and immunosupperression prior to bone marrow transplantation. Accurate provision for specified dose and the desired homogeneity are essential before clinical total body irradiatio. When performed in total body irradiation, the problem obtain uniform uniform dose distribution in brain, neck, lung, umbilicus, pelvis and leg. Authors compared to dose distribution with method 1 and method 1. The method 1 used compensationg filters for homogeneous dose distribution(Minesota University Method). The method 2 used fixing frame made in acryl developing authors. Results were following 1. Method 1 was showed dose distribution from 95.6% to 100%, method 2 showed dose distribution from 95.4% to 100% 2. Method 2 was showed different to 3.4% at skin region and midline in the brain. In the neck, showed different to 1.5%. In the umbilicus, showed different to 2.3%.

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Total Body Irradiation of Childhood Leukemia dose Evaluation due to Changes in the Thickness of the Tissue Compensators (소아백혈병의 전신방사선조사 시 조직보상체의 두께변화에 따른 선량평가)

  • Lee, Dong-Yeon;Kim, Chang-Soo;Kim, Dong-Hyun;Kim, Jung-Hoon
    • The Journal of the Korea Contents Association
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    • v.14 no.4
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    • pp.249-255
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    • 2014
  • Total body irradiation use one of the pre-treatment as hematopoietic stem cell transplantation in the treatment of leukemia. According to the study of Korean network for organ sharing 2013 report, continue to increase the number of hematopoietic stem cell transplantation. however, the current dose evaluation fall short before treatment. So purpose of this study is Surface dose and deep organ dose evaluation and then find the most ideal conditions when change of the thickness on tissue compensator in TBI. Result, surface dose in 4 MV, SSD 280 cm, compensators thickness 0.5 cm, was measured the highest dose 5.84 mGy/min. And the ideal dose showed when compensator thickness less than 1 cm.

The Effects of Music Therapy on Anxiety, Nausea and Vomiting in Patients Receiving Total Body Irradiation for Hematopoietic Stem Cell Transplantation (음악요법이 조혈모세포 이식 전 전신 방사선조사 시 불안, 오심과 구토에 미치는 효과)

  • Lee, Jee-Hyun;Kim, Nam-Cho
    • Asian Oncology Nursing
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    • v.6 no.1
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    • pp.27-36
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    • 2006
  • Purpose: The present study was to investigate the effect of music therapy on anxiety, nausea, and vomiting in patients undergoing total body irradiation (TBI) for hematopoietic stem cell transplantation (HSCT). Method: A untreated control group with pretest and posttest was used in this study. A total of 35 patients receiving TBI for HSCT were recruited from a medical center at a university in Korea. The music therapy taking for 15-20 minutes per a time was performed twice a day for three days while the patients in the experimental group were undergoing the TBI. Results: The scores of state anxiety, nausea and vomiting tended to increase in the control group as compare with those in the experimental group. The patients in the control group had been administerd antiemetics more often than those in the experimental group. The levels of systolic and diastolic blood pressure and the pulse rates in the experimental group tended to decrease after the experiment. However, there was no statistically significant differences in anxiety, nausea, vomiting, blood pressure, and pulse between the groups. Conclusion: It is suggested to repeat this study with a enough sample size.

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Total Body Irradiation in Leukemia - Preliminary Report - (방사선 전신조사)

  • Jang Hong Seok;Chung Su Mi;Choi Ihl Bohng;Kim Choon Yul;Bahk Yong Whee;Kim Choon Choo;Kim Dong Jip;Lee Jae Soo
    • Radiation Oncology Journal
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    • v.6 no.2
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    • pp.247-251
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    • 1988
  • Total body irradiation has been applied to treat acute leukemia and chronic granulocytic leukemia.20 patients with acute leukemia or chronic granulocytic leukemia were treated with total body irradiation using 6 MV linear accelerator before bone marrow transplantation at the Division of Therapeutic Radiology, Department of Radiology, St. Mary's Hospital, Catholic University Medical College from August 1987 to September 1988. Among 20 patients, 8 patients received 6 fractions of 200 cGy (total 1200 cGy),10 patients received a single 850 cGy radiation,1 patient received 4 fractions totalling 850 cGy (200, 200, 200, 250), and 1 patient received 1100 cGy in 2 fractions (850, 250).17 patients received allogenic grafts, 2 patients received autologous grafts, and only one patient received one locus mismatched graft. 13 patients are still alive and 7 patients died. The complications induced by total body irradiation were nausea and vomiting, diarrhea, skin erruption, mucositis, and pneumonitis.

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