Interstitial Radiation

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Juanita Crook - One of the best experts on this subject based on the ideXlab platform.

Neil Fleshner - One of the best experts on this subject based on the ideXlab platform.

Kris Wallace - One of the best experts on this subject based on the ideXlab platform.

Michael A.s. Jewett - One of the best experts on this subject based on the ideXlab platform.

Masashi Fuse - One of the best experts on this subject based on the ideXlab platform.

  • transperineal high dose rate Interstitial Radiation therapy in the management of gynecologic malignancies
    Strahlentherapie Und Onkologie, 2003
    Co-Authors: Jun Itami, Ryusuke Hara, Takuyou Kozuka, Hideomi Yamashita, Kaori Nakajima, Kouji Shibata, Masashi Fuse
    Abstract:

    BACKGROUND: High-dose-rate Interstitial Radiation therapy is a newly introduced modality, and its role in the management of gynecologic malignancies remains to be studied. Clinical experience in high-dose-rate Interstitial Radiation therapy was retrospectively investigated. PATIENTS AND METHODS: Eight patients with primary and nine with recurrent gynecologic malignancies underwent high-dose-rate Interstitial Radiation therapy with/without external-beam irRadiation. Fractional dose of the high-dose-rate Interstitial Radiation therapy ranged between 4 and 6 Gy with total doses of 15-54 Gy. Interstitial irRadiation was performed twice daily with an interval of > 6 h. RESULTS: 2-year local control rate was 75% for primary treatment and 47% for treatment of recurrence (p = 0.46). Maximum tumor size had a statistically significant impact on local control (p 100 cm(3) and < or = 100 cm(3), respectively (p < 0.04). CONCLUSION: Although high-dose-rate Interstitial Radiation therapy is a promising modality, it must be applied cautiously to patients with bulky tumors because of the high incidence of serious complications.

  • Transperineal High-Dose-Rate Interstitial Radiation Therapy in the Management of Gynecologic Malignancies
    Strahlentherapie und Onkologie, 2003
    Co-Authors: Jun Itami, Ryusuke Hara, Takuyou Kozuka, Hideomi Yamashita, Kaori Nakajima, Kouji Shibata, Masashi Fuse
    Abstract:

    Hintergrund: Die interstitielle High-Dose-Rate-(HDR-)Bestrahlung ist eine neu eingeführte Modalität, deren Rolle bei der Behandlung von gynäkologischen Malignomen noch zu klären ist. Eigene klinische Erfahrungen mit der interstitiellen HDR-Bestrahlung wurden retrospektiv analysiert. Patienten und Methodik: Acht Patientinnen mit primären Malignomen und neun Patientinnen mit Redizidiven im gynäkologischen Bereich unterzogen sich einer interstitiellen HDR-Bestrahlung (mit/ohne perkutane Bestrahlung) mit 4–6 Gy bei einer Gesamtdosis von 15–54 Gy. Die interstitielle Bestrahlung wurde zweimal täglich im Abstand von > 6 h durchgeführt. Ergebnisse: Die lokale 2-Jahres-Kontrollrate betrug bei der Primärtherapie 75% und bei der Behandlung von Rezidiven 47% (p = 0,46). Die maximale Tumorgröße hatte einen statistisch signifikanten Einfluss auf die lokale Kontrollrate (p < 0,002). Spätkomplikationen Grad 2 und 4 fanden sich bei fünf Patientinnen, und ihre Häufigkeit war signifikant von dem brachytherapeutisch behandelten Volumen abhängig. Bei 78% der Patientinnen mit einem Volumen > 100 cm^3 fanden sich nach 18 Monaten Komplikationen Grad 2 und 4, dagegen bei 0% der Patientinnen mit kleinerem Volumen (p < 0,04). Schlussfolgerung: Obwohl die interstitielle HDR-Bestrahlung eine viel versprechende Modalität ist, muss sie bei Patientinnen mit großen Tumoren wegen der hohen Inzidenz schwerer Komplikationen vorsichtig angewandt werden. Background: High-dose-rate Interstitial Radiation therapy is a newly introduced modality, and its role in the management of gynecologic malignancies remains to be studied. Clinical experience in high-dose-rate Interstitial Radiation therapy was retrospectively investigated. Patients and Methods: Eight patients with primary and nine with recurrent gynecologic malignancies underwent high-dose-rate Interstitial Radiation therapy with/without external-beam irRadiation. Fractional dose of the high-dose-rate Interstitial Radiation therapy ranged between 4 and 6 Gy with total doses of 15–54 Gy. Interstitial irRadiation was performed twice daily with an interval of > 6 h. Results: 2-year local control rate was 75% for primary treatment and 47% for treatment of recurrence (p = 0.46). Maximum tumor size had a statistically significant impact on local control (p < 0.002). Grade 2 and 4 late complications were seen in five patients, and the incidence was significantly higher in patients with a larger volume enclosed by the prescribed fractional dose of high-dose-rate Interstitial Radiation therapy. The incidence of grade 2 and 4 complications at 18 months was 78% and 0% with a volume > 100 cm^3 and ≤ 100 cm^3, respectively (p < 0.04). Conclusion: Although high-dose-rate Interstitial Radiation therapy is a promising modality, it must be applied cautiously to patients with bulky tumors because of the high incidence of serious complications.