The Placorhen Study: A Double-Blind, Placebo-Controlled, Randomized Radionuclide Study with 186Re-Etidronate in Hormone-Resistant Prostate Cancer Patients with Painful Bone Metastases
Shiuw H. Han, MD, PhD1,
John M.H. de Klerk, MD, PhD1,
Suzy Tan, MSc1,
Alfred D. van het Schip, PhD1,
Bert H. Derksen1,
Aalt van Dijk, PharmD1,
Cas L.J.J. Kruitwagen, MSc2,
Geert H. Blijham, MD, PhD3,
Peter P. van Rijk, MD, PhD1 and
Bernard A. Zonnenberg, MD, PhD3
1 Department of Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
2 Center for Biostatistics, University of Utrecht, Utrecht, The Netherlands
3 Oncology Section, Department of Internal Medicine, University Medical Center Utrecht, Utrecht, The Netherlands

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FIGURE 1. Scintigraphy of prostate cancer patient with multiple bone metastases.
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FIGURE 2. Electronic palm-top computer diary (personal digital assistant).
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FIGURE 3. Placorhen study flowchart of randomized patients in placebo and rhenium groups.
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FIGURE 4. Change in visual analog score (A), medication index (B), and daily activity (C) in placebo group and rhenium group during follow-up. VAS = visual analog score; 0 = time at baseline.
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FIGURE 5. Distribution of patients in relation to therapy and number of response days.
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FIGURE 6. Kaplan-Meier curves of treatment groups in relation to time to request for radiotherapy.
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Copyright © 2002 by the Society of Nuclear Medicine.