On the use of multi-dimensional scaling and electromagnetic tracking in high dose rate brachytherapy

被引：8

作者：

Goetz, Th I. ^{[1
,2
]}

Ermer, M. ^{[1
]}

Salas-Gonzalez, D. ^{[4
]}

Kellermeier, M. ^{[2
]}

Strnad, V. ^{[2
]}

Bert, Ch ^{[2
]}

Hensel, B. ^{[5
]}

Tome, A. M. ^{[3
]}

Lang, E. W. ^{[1
]}

机构：

[1] Univ Regensburg, CIML, Biophys, D-93040 Regensburg, Germany

[2] Friedrich Alexander Univ Erlangen Nurnberg, Dept Radiat Oncol, Univ KLinikum Erlangen, D-91054 Erlangen, Germany

[3] Univ Aveiro, DETI, IEETA, P-3810193 Aveiro, Portugal

[4] Univ Granada, DTSTC, E-18071 Granada, Spain

[5] Univ Erlangen Nurnberg, Ctr Med Phys & Engn, D-91052 Erlangen, Germany

来源：

PHYSICS IN MEDICINE AND BIOLOGY | 2017年 / 62卷 / 20期

关键词：

multi-dimensional scaling; electromagnetic tracking; brachytherapy; Levy distributions; hartigan-dip-test; BREAST IRRADIATION; BAYESIAN-INFERENCE; QUALITY-ASSURANCE; SURGERY;

D O I：

10.1088/1361-6560/aa8944

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

High dose rate brachytherapy affords a frequent reassurance of the precise dwell positions of the radiation source. The current investigation proposes a multi-dimensional scaling transformation of both data sets to estimate dwell positions without any external reference. Furthermore, the related distributions of dwell positions are characterized by uni-or bi-modal heavy-tailed distributions. The latter are well represented by alpha-stable distributions. The newly proposed data analysis provides dwell position deviations with high accuracy, and, furthermore, offers a convenient visualization of the actual shapes of the catheters which guide the radiation source during the treatment.

引用

页码：7959 / 7980

页数：22

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