Next Article in Journal
Breast Cancer Diagnosis Using an Efficient CAD System Based on Multiple Classifiers
Previous Article in Journal
The Newly Normed SKT Reveals Differences in Neuropsychological Profiles of Patients with MCI, Mild Dementia and Depression
Open AccessArticle

Accelerated Reliability Growth Test for Magnetic Resonance Imaging System Using Time-of-Flight Three-Dimensional Pulse Sequence

1
College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea
2
College of Software, Sungkyunkwan University, Suwon 16419, Korea
3
IBA Community College Naushahro Feroze, Sukkur IBA University, Sindh 65200, Pakistan
*
Author to whom correspondence should be addressed.
Diagnostics 2019, 9(4), 164; https://doi.org/10.3390/diagnostics9040164
Received: 19 September 2019 / Revised: 9 October 2019 / Accepted: 23 October 2019 / Published: 25 October 2019
(This article belongs to the Section Medical Imaging)
A magnetic resonance imaging (MRI) system is a complex, high cost, and long-life product. It is a widely known fact that performing a system reliability test of a MRI system during the development phase is a challenging task. The major challenges include sample size, high test cost, and long test duration. This paper introduces a novel approach to perform a MRI system reliability test in a reasonably acceptable time with one sample size. Our approach is based on an accelerated reliability growth test, which consists of test cycle made of a very high-energy time-of-flight three-dimensional (TOF3D) pulse sequence representing an actual hospital usage scenario. First, we construct a nominal day usage scenario based on actual data collected from an MRI system used inside the hospital. Then, we calculate the life-time stress based on a usage scenario. Finally, we develop an accelerated reliability growth test cycle based on a TOF3D pulse sequence that exerts highest vibration energy on the gradient coil and MRI system. We use a vibration energy model to map the life-time stress and reduce the test duration from 537 to 55 days. We use a Crow AMSAA plot to demonstrate that system design reaches its useful life after crossing the infant mortality phase. View Full-Text
Keywords: system reliability test; growth test; Crow AMSAA; magnetic resonance imaging; MRI; MRI usage scenario; accelerated test system reliability test; growth test; Crow AMSAA; magnetic resonance imaging; MRI; MRI usage scenario; accelerated test
Show Figures

Figure 1

MDPI and ACS Style

Anand, P.K.; Shin, D.R.; Saxena, N.; Memon, M.L. Accelerated Reliability Growth Test for Magnetic Resonance Imaging System Using Time-of-Flight Three-Dimensional Pulse Sequence. Diagnostics 2019, 9, 164.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop