Journal article
Evaluation of Free Breathing Versus Breath Hold Diffusion Weighted Imaging in Terms Apparent Diffusion Coefficient (ADC) and Signal-to-Noise Ratio (SNR) Values for Solid Abdominal Organs
Polish journal of radiology, Vol.81, pp.502-506
10/25/2016
DOI: 10.12659/PJR.895868
PMCID: PMC5083043
PMID: 27822326
Abstract
Background: Our aim was to compare the apparent diffusion coefficient (ADC) values of normal abdominal parenchymal organs and signal-to-noise ratio (SNR) measurements in the same patients with breath hold (BH) and free breathing (FB) diffusion weighted imaging (DWI).
Material/Methods: Forty-eight patients underwent both BH and FB DWI. Spherical region of interest (ROI) was placed on the right hepatic lobe, spleen, pancreas, and renal cortices. ADC values were calculated for each organ on each sequence using an automated software. Image noise, defined as the standard deviation (SD) of the signal intensities in the most artifact-free area of the image background was measured by placing the largest possible ROI on either the left or the right side of the body outside the object in the recorded field of view. SNR was calculated using the formula: SNR=signal intensity (SI)((organ)/)standard deviation (SD)((noise)).
Results: There were no statistically significant differences in ADC values of the abdominal organs between BH and FB DWI sequences (p>0.05). There were statistically significant differences between SNR values of organs on BH and FB DWIs. SNRs were found to be better on FB DWI than BH DWI (p<0.001).
Conclusions: Free breathing DWI technique reduces image noise and increases SNR for abdominal examinations. Free breathing technique is therefore preferable to BH DWI in the evaluation of abdominal organs by DWI.
Details
- Title: Subtitle
- Evaluation of Free Breathing Versus Breath Hold Diffusion Weighted Imaging in Terms Apparent Diffusion Coefficient (ADC) and Signal-to-Noise Ratio (SNR) Values for Solid Abdominal Organs
- Creators
- Duygu Herek - Pamukkale UniversityNevzat Karabulut - Pamukkale UniversityAli Kocyigit - Pamukkale UniversityAhmet Baki Yagci - Pamukkale University
- Resource Type
- Journal article
- Publication Details
- Polish journal of radiology, Vol.81, pp.502-506
- Publisher
- Int Scientific Information Inc
- DOI
- 10.12659/PJR.895868
- PMID
- 27822326
- PMCID
- PMC5083043
- ISSN
- 0137-7183
- eISSN
- 1899-0967
- Number of pages
- 5
- Language
- English
- Date published
- 10/25/2016
- Academic Unit
- Radiology
- Record Identifier
- 9984697733702771
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