• Title/Summary/Keyword: $^{188}Re$

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Dosimetry and Medical Internal Radiation Dose of Re-188-DTPA for Endovascular Balloon Brachytherapy Against Restenosis after Coronary Angioplasty (혈관성형술 후 재협착 방지 치료에 사용하기 위한 원통형 풍선 Re-188-DTPA의 선량 분포와 내부피폭 선량)

  • Lee, Jin;Lee, Dong-Soo;Shin, Seung-Ae;Jeong, Jae-Min;Chung, June-Key;Lee, Myung-Chul
    • The Korean Journal of Nuclear Medicine
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    • v.33 no.2
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    • pp.163-171
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    • 1999

  • Purpose: Liquid beta emitter filled in angioplasty balloon could be used to perform endovascular balloon brachytherapy to prevent coronary artery restenosis. We investigated the dosimetry for Re-188-DTPA liquid-filled balloon and medical internal radiation dosimetry in case of balloon leakage. Materials and Methods: We estimated radiation dose from an angioplasty balloon (20 mm length, 3 mm diameter cylinder) to the adjacent vessel wall using Monte Carlo EGS4 code. We obtained time-activity curves of kidneys in normal dog and calculated $T_{max},\;T_{1/2}$. Using MIRDOSE3 program, we estimated absorbed doses to the major organs (kidneys, bladder) and the whole body when we assumed that balloon leaked all the isotope contained. Results: The radiation dose was 17.5 Gy at the balloon surface when we applied 3,700 MBq/ml of Re-188 for 100 seconds, Fifty percent of the energy deposited within 1 mm from the balloon surface. The estimated internal dose to the whole body was 0.005 mGy/MBq and 18.5 mGy for the spillage of 3,700 MBq of Re-188. Conclusion: We suggest that Re-188-DTPA can be used for endovascular balloon brachytherapy to inhibit coronary artery restenosis after angioplasty with tolerable whole body radiation dose in case of balloon rupture.

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Initial experience with intra-articular 188Re-tin colloid as a "radiation synovectomy" agent in various joints

  • Shinto, Ajit S;Indira, VU;Kamaleshwaran, KK;Banka, Vinay Kumar;Aswathy, KK;Thirumalaisamy, SG;Rajamani, V;Mallia, Madhav;Banerjee, Sharmila
    • Journal of Radiopharmaceuticals and Molecular Probes
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    • v.1 no.2
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    • pp.109-117
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    • 2015

  • Radiation synovectomy has been proposed as a promising palliative therapy for recurrent joint effusions for the last two or three decades. Ionizing radiations emitted by intrarticularly administered radiolabelled colloids. The aim of this study was to assess the effectiveness of radiation synovectomy (RSV) using $^{188}Re$-tin colloid in the treatment of recurrent joint effusions and chronic synovitis of knee joints. Three phase bone scan was acquired for the concerned joint prior to radiosynovectomy. $^{188}Re$-tin colloid was prepared as per the reported protocol. 9 patients, diagnosed with rheumatoid arthritis and suffering from chronic resistant synovitis of the knee, ankle or elbow joints were administered the radiopharmaceuticals, checked for radiochemical purity >95% by intraarticular route. A whole body scan was acquired 2 h post-radiosynovectomy. In all the 9 treatments, no leakage to non-target organs was visible in the whole body scan. Static scans of the joint revealed complete retention of $^{188}Re$-tin colloid in the joints post administration of the agent. Clinically all patients exhibited a complete or partial response. RSV with $^{188}Re$-tin colloid was safe and effective in patients with chronic synovitis of rheumatoid origin.

  • https://doi.org/10.22643/JRMP.2015.1.2.109 인용 PDF

DA-7911, rhenium-188 ($Re^{188}$) tin colloid. as a strong candidate agent for radiation synovectomy

  • Shin, Chang-Yell;Jung, Mi-Young;Lee, In-Ki;Son, Mi-Won;Kim, Soon-Hoe;Kim, Won-Bae
    • Proceedings of the PSK Conference
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    • 2002.10a
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    • pp.252-252
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    • 2002

  • Radiation synovectomy is an useful alternative treatment to rheumatoid arthritis and Re$\^$188/ is suggested as an ideal radiopharmaceutical agents because beta ray (2.1 MeV) emitted from Re$\^$188/ is appropriate for synovial cell ablation and gamma ray (155 KeV) is ideal for dosimetry. Its' ideal particle size (2-5 mm) was achieved by conjugation with tin-colloid, In this study, we investigated the toxicity, stability and biodistribution to evaluate the suitability of DA-7911 as a synovectomy agent. (omitted)

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