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Technical note: RabbitCT--an open platform for benchmarking 3D cone-beam reconstruction algorithms.

C Rohkohl¹, B Keck, H G Hofmann

¹Department of Computer Science, Chair of Pattern Recognition, Friedrich-Alexander University Erlangen-Nuremberg, Martensstrasse 3, 91058 Erlangen, Germany. christopher.rohkohl@informatik.uni-erlangen.de

Medical Physics

|October 9, 2009

Summary

This summary is machine-generated.

A new open platform, RabbitCT, standardizes comparisons of hardware-accelerated backprojection methods for 3D cone beam CT reconstruction. This enables objective performance ranking and promotes development of faster algorithms.

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Area of Science:

Medical Imaging
Computer Science
Computational Imaging

Background:

Fast 3D cone beam reconstruction is crucial for clinical workflows, with backprojection being a key computational bottleneck.
Existing hardware-optimized reconstruction methods lack standardized comparison due to varied datasets and evaluation protocols.
A common, publicly available dataset is essential for reproducible and comparable benchmarking of backprojection algorithms.

Purpose of the Study:

To address the lack of comparability in hardware-accelerated backprojection research.
To provide a standardized dataset and platform for evaluating backprojection performance.
To facilitate objective comparison and ranking of different backprojection implementations.

Main Methods:

Development of an open platform, RabbitCT (www.rabbitct.com), for global benchmarking.
Utilizing a high-resolution C-arm CT dataset of a rabbit for standardized testing.
Implementation of a sophisticated benchmark interface, C++ prototype, and image quality metrics.

Main Results:

RabbitCT hosts six backprojection implementations, showcasing optimizations like multithreading (Intel TBB, OpenMP), vectorization (SSE), and GPU computing (CUDA 2.0).
The platform enables direct comparison of performance across diverse hardware architectures.
Initial results demonstrate various optimization strategies applied to backprojection.

Conclusions:

There is a clear need for objective and standardized comparison of backprojection implementations in CT reconstruction.
RabbitCT provides a fair and open platform to meet this need, fostering community involvement.
The platform encourages further development and evaluation of novel software and hardware acceleration techniques for reconstruction algorithms.