For prostate diffusion-weighted imaging (DWI) magnetic resonance imaging (MRI), researchers recommend that getting deep studying reconstruction (DLR) pictures at decreased excitations could result in a better than 65 % discount in scanning time for restricted subject of view (FOV) picture acquisition.
For the retrospective research, just lately printed in Medical Imaging, researchers examined the impression of DLR (AIR™ Recon DL, GE HealthCare) at a decrease variety of excitations (NEX) upon picture high quality, signal-to-noise ratio (SNR) and examination time for DWI MRI in 52 sufferers (median age of 64 and median prostate-specific antigen (PSA) degree of 5.9 ng/mL).
The research authors discovered that using DLR at 4NEX for DWI MRI decreased scanning time by 68 % for restricted FOV pictures and 39 % for giant FOV picture collection. General, the researchers estimated that getting 4NEX DLR pictures for DWI MRI would take 13 minutes and 37 seconds compared to 18 minutes and 37 seconds for traditional imaging acquisition with prostate mpMRI.
Right here one can see restricted and enormous field-of-view (FOV) MRI pictures obtained at variable excitations for a affected person with a lesion in the suitable mid-gland peripheral zone. New analysis means that using deep studying reconstruction at 4NEX for DWI MRI could cut back scanning time by 68 % for restricted FOV pictures and 39 % for giant FOV picture collection. (Pictures courtesy of Medical Imaging.)
“This time financial savings has the potential to translate to ≥1 extra sufferers imaged per day per scanner, assuming a routine time slot of 20–30 min and 4–6 mpMRI prostate examinations,” wrote lead research writer Rory L. Cochran, M.D., Ph.D., who’s affiliated with the Division of Radiology at Massachusetts Normal Hospital in Boston, and colleagues.
Compared to the SNR for standard NEX with restricted FOV DWI MRI pictures (7.8), the researchers famous greater SNR with DLR at 6NEX (9.1) and 9NEX (10.1) however no important distinction at 4NEX (8.2).
Three Key Takeaways
1. Important discount in MRI scanning time. Utilizing deep studying reconstruction (DLR) for prostate DWI MRI with decreased excitations can minimize scanning time by over 65 % for restricted subject of view (FOV) imaging, doubtlessly permitting for extra sufferers to be scanned every day.
2. Comparable picture high quality at decrease excitations. The research discovered no important distinction in picture high quality between DLR at 4 excitations (NEX) and standard strategies, suggesting that decreased excitations could keep diagnostic accuracy whereas bettering effectivity.
3. Sign-to-noise ratio (SNR) insights. DLR imaging at greater excitations (6NEX and 9NEX) achieved a better SNR in comparison with standard strategies for restricted FOV pictures except for a minimal distinction at 4NEX. This steadiness of SNR and effectivity helps DLR use, notably in restricted FOV imaging.
(Editor’s be aware: For added content material on prostate most cancers imaging, click on right here.)
For big FOV DWI MRI, no matter NEX degree, the research authors famous a 19.1 SNR for standard NEX vs. a 19.6 SNR for 4NEX DLR at 4NEX and a 21.3 SNR for 6NEX DLR.
“No important distinction was detected between standard technique reconstructed pictures and DLR diffusion pictures utilizing 4 NEX datasets … . SNR for the big FOV DWI pictures was not considerably totally different for DLR pictures in comparison with standard reconstruction … , no matter NEX,” added Cochran and colleagues.
(Editor’s be aware: For associated content material, see “AI Segmentation, Intraprostatic Tumor Quantity and Metastases: What a brand new mpMRI Research Reveals,” “Rising AI Platform Exhibits Promise for Prostate Most cancers Detection on mpMRI” and “MRI Research Suggests Deep Studying Mannequin Provides Equal Detection of csPCa as Skilled Radiologists.”)
Past the inherent limitations of a retrospective research, the authors cautioned that using decreased NEX could improve the variety of non-diagnostic diffusion pictures.
