Local Control of Large Primary Brain or Metastasis Treated by Leksell γ-Knife Stereotactic Radiosurgery: An Analysis of Dose-Volume Considerations, Local Control, and Complications Tập 2 - Trang 141-152 - 1999
S. M. Ling, D. Linzer, J. Lu, W. Raub, H. Villalobos, J. Ting, X. Wu, H. Landy, A. Berti, A. M. Markoe
Background: It has been shown that as the target volume of a given lesion
treated by radiosurgery increases, there is a geometric increase in the amount
of normal brain tissue that receives a significant radiotherapy dose. In order
to limit toxicity to normal brain tissue as target volume increases, the dose
prescribed to the target volume is lowered, decreasing the theoretical
probability of loca... hiện toàn bộ
20-Year MRI and CT Scan Follow-up of Pituitary Adenomas: Tumor Regression and the Implications for Radiotherapy Tập 2 - Trang 199-203 - 1999
Courtney Coke, Maurice Fitzpatrick, Benjamin Corn, Carlos Gonzalez, Yang Xie, Walter J. Curran
Purpose/Objective: Pituitary adenomas are benign endocrine tumors that represent
10% of all intracranial neoplasms. These tumors have a variable growth rate and
a variable response to hormonal manipulation, radiotherapy, or surgery.
Surprisingly, very little information is available documenting regression of
pituitary adenomas after surgery with serial imaging studies. To clearly define
the postop... hiện toàn bộ
Stereotactic Radiotherapy for Treatment of Subfoveal Choroidal Neovascularization in Age-Related Macular Degeneration Tập 2 - Trang 113-118 - 1999
Bruce J. Gerbi, Loretta A. Lewandowski, Patrick D. Higgins, Kwan H. Cho, Walter A. Hall, Kimberly A. Neely
Age-related macular degeneration (AMD) is the leading cause of visual loss among
adults 65 years and older in western countries. Of patients with AMD who
experience severe loss of vision, approximately 90% do so because of choroidal
neovascularization (CNV). Visual loss is most severe when the CNV occurs
directly under the fovea. Radiation-treated patients show some stabilization of
visual acuity ... hiện toàn bộ
Long-Term Follow-Up of Brachytherapy in Untreated Malignant Glioma Tập 2 - Trang 129-133 - 1999
P. W. Hitchon, Pamela Schneider, J. C. VanGilder, J. C. Torner, B. C. Wen, S. K. Jani
Objective: Long-term follow-up of patients with malignant glioma randomized to
treatment with and without brachytherapy. Methods: Twenty-six patients were
randomized to brachytherapy and external radiation, and 23 to external radiation
alone. There were 19 and 17 glioblastomas, and 3 and 8 anaplastic astrocytomas,
in the nonimplant and implant groups, respectively, and 1 malignant
oligodendrogliom... hiện toàn bộ
Assessment of the Accuracy of Stereotactic Target Localization Using Magnetic Resonance Imaging: A Phantom Study Tập 1 - Trang 99-111 - 1998
J. Novotný, J. Vymazal, R. Liščák, V. Vladyka
Magnetic resonance imaging is a valuable technique for brain target
visualization and localization for stereotactically guided open surgery,
stereotactic biopsy, or stereotactic radiosurgery. However, questions remain
regarding the extent of image distortion (caused mainly by inhomogeneity of the
constant magnetic field induced by the imaged object and nonlinearities in the
gradient fields) and it... hiện toàn bộ
Stereotactic Radiosurgery for Brainstem and Thalamic Metastases - 2000
Jonathan D. Sherman, Christopher D. Kager, Jodi Ward, Ronald E. Warnick, John C. Breneman
Some lesions situated in sensitive areas of the brain are potentially dangerous
to treat with any modality. This study reviews one institution's experience with
the use of stereotactic radiosurgery (SRS) for brainstem and thalamic metastases
to evaluate its efficacy in treating such lesions. Between October 1989 and
January 1998, 20 patients (9 men, 11 women) underwent linear accelerator SRS for
m... hiện toàn bộ
Feasibility of Frameless Stereotactic High-Dose Radiation Therapy for Primary or Metastatic Liver Cancer Tập 1 - Trang 233-238 - 1998
Michinao Sato, Minoru Uematsu, Fuyumi Yamamoto, Akira Shioda, Kazuhiko Tahara, Toshiharu Fukui, Hisaaki Yokoyama, Atsuya Takeda, Jun Koizumi, Tatsumi Kaji, Shigeru Kosuda, Shoichi Kusano
Between April 1995 and March 1997, 18 patients with 23 primary or metastatic
liver cancers were treated with frameless stereotactic radiation therapy (F-SRT)
using a multifunctional treatment unit consisting of a linear accelerator
(LINAC), computed tomography (CT), an X-ray simulator (X-S), and a treatment
table. Before F-SRT, all but two patients received transcatheter arterial
chem-oembolizatio... hiện toàn bộ