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Radiation: Applications

Radiation: Applications

The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
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Updated: May 22, 2026

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy

Published on: June 7, 2015

A multi-GPU real-time dose simulation software framework for lung radiotherapy.

A P Santhanam¹, Y Min, H Neelakkantan

¹University of California, Los Angeles, CA, USA. asanthanam@mednet.ucla.edu

International Journal of Computer Assisted Radiology and Surgery

|April 28, 2012

Summary

This summary is machine-generated.

This study introduces a GPU-accelerated framework for real-time radiation dose monitoring in radiotherapy, enabling faster and accurate patient treatment analysis. The system effectively simulates radiation dose delivery on deformable lung models.

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Area of Science:

Medical physics
Computational biology
Radiotherapy

Background:

Medical simulation frameworks are crucial for analyzing patient conditions before and after surgery.
Accurate simulation of radiation dose delivery is vital for real-time radiotherapy monitoring and treatment analysis.

Purpose of the Study:

To present a software framework for developing simulation-based medical applications for real-time radiation dose monitoring.
To enable both real-time and retrospective analyses of patient treatment in radiotherapy.

Main Methods:

A multi-GPU computational framework with inter-process communication for simulating radiation dose delivery on deformable 3D lung models.
Pipelined task allocation for model deformation and dose calculation across GPUs.
Integration with front-end software and a back-end patient database.

Main Results:

Achieved real-time simulation of dose delivery at 120 ms intervals.
Demonstrated linear decrease in computational time with increased GPU cores and improved communication time with increased memory.
Showcased computational speed-up compared to CPU-based software with <1% dose calculation error.

Conclusions:

The developed framework is effective for real-time and retrospective analyses in deformable lung model-based radiotherapy.
Highlights the potential of GPU acceleration for improving radiotherapy simulation efficiency and accuracy.