An Approach to Rapid Calculation of Temperature Change in Tissue Using Spatial Filters to Approximate Effects of Thermal Conduction

被引：41

作者：

Carluccio, Giuseppe ^{[1
]}

Erricolo, Danilo ^{[2
]}

Oh, Sukhoon ^{[1
]}

Collins, Christopher M. ^{[1
]}

机构：

[1] NYU, Dept Radiol, New York, NY 10016 USA

[2] Univ Illinois, Dept Elect & Comp Engn, Chicago, IL 60607 USA

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2013年 / 60卷 / 06期

基金：

美国国家卫生研究院;

关键词：

Calculation; filter; magnetic resonance imaging (MRI); specific energy absorption rate (SAR); temperature; HUMAN HEAD; COMPUTER-SIMULATION; ABSORPTION RATE; DISTRIBUTIONS; HYPERTHERMIA; ARRAY; MRI; SAR; ELEVATION; FIELD;

D O I：

10.1109/TBME.2013.2241764

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We present an approach to performing rapid calculations of temperature within tissue by interleaving, at regular time intervals, 1) an analytical solution to the Pennes (or other desired) bioheat equation excluding the term for thermal conduction and 2) application of a spatial filter to approximate the effects of thermal conduction. Here, the basic approach is presented with attention to filter design. The method is applied to a few different cases relevant to magnetic resonance imaging, and results are compared to those from a full finite-difference (FD) implementation of the Pennes bioheat equation. It is seen that results of the proposed method are in reasonable agreement with those of the FD approach, with about 15% difference in the calculated maximum temperature increase, but are calculated in a fraction of the time, requiring less than 2% of the calculation time for the FD approach in the cases evaluated.

引用

页码：1735 / 1741

页数：7

共 21 条

[1] Specific absorption rate and temperature elevation in a subject exposed in the far-field of radio-frequency sources operating in the 10-900-MHz range [J].