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| 1 | Comparison of free breathing and respiratory triggered diffusion-weighted imaging sequences for liver imaging显示文摘BACKGROUND Diffusion-weighted imaging(DWI)has become a useful tool in the detection,characterization,and evaluation of response to treatment of many cancers,including malignant liver lesions.DWI offers higher image contrast between lesions and normal liver tissue than other sequences.DWI images acquired at two or more b-values can be used to derive an apparent diffusion coefficient(ADC).DWI in the body has several technical challenges.This include ghosting artifacts,mis-registration and susceptibility artifacts.New DWI sequences have been developed to overcome some of these challenges.Our goal is to evaluate 3 new DWI sequences for liver imaging.AIM To qualitatively and quantitatively compare 3 DWI sequences for liver imaging:free-breathing(FB),simultaneous multislice(SMS),and prospective acquisition correction(PACE).METHODS Magnetic resonance imaging(MRI)was performed in 20 patients in this prospective study.The MR study included 3 separate DWI sequences:FB-DWI,SMS-DWI,and PACE-DWI.The image quality,mean ADC,standard deviations(SD)of ADC,and ADC histogram were compared.Wilcoxon signed-rank tests were used to compare qualitative image quality.A linear mixed model was used to compare the mean ADC and the SDs of the ADC values.All tests were 2-sided and P values of<0.05 were considered statistically significant.RESULTS There were 56 lesions(50 malignant)evaluated in this study.The mean qualitative image quality score of PACE-DWI was 4.48.This was significantly better than that of SMS-DWI(4.22)and FB-DWI(3.15)(P<0.05).Quantitatively,the mean ADC values from the 3 different sequences did not significantly differ for each liver lesion.FB-DWI had a markedly higher variation in the SD of the ADC values than did SMS-DWI and PACE-DWI.We found statistically significant differences in the SDs of the ADC values for FB-DWI vs PACE-DWI(P<0.0001)and for FB-DWI vs SMS-DWI(P=0.03).The SD of the ADC values was not statistically significant for PACE-DWI and SMS-DWI(P=0.18).The quality of the PACE-DWI ADC histograms were considered better than the SMS-DWI and FB-DWI.CONCLUSION Compared to FB-DWI,both PACE-DWI and SMS-DWI provide better image quality and decreased quantitative variability in the measurement of ADC values of liver lesions. | Janio Szklaruk Jong Bum Son Wei Wei Priya Bhosale Sanaz Javadi Jingfei Ma | 2019 | World Journal of Radiology2019，11，11： | 2 |
| 2 | Comparison of 2 techniques of intraocular lens implantation in pediatric cataract surgery 显示文摘 | Faramarzi A Javadi MA | 2009 | J Cataract Refract Surg2009，35，6： | 1 |
| 3 | Outcomes of penetrating keratoplasty in keratoconus显示文摘 | Javadi MA Motlagh BF Jafarinasab MR | 2005 | Cornea2005，24，8： | 1 |
| 4 | Graft biomechanical prop- erties after penetrating keratoplasty versus deep anterior lamellar keratoplasty 显示文摘 | Jafarinasab MR Feizi S Javadi MA | 2011 | Curr Eye Res2011，36，： | 1 |
| 5 | Corneal endothelial cell loss during phacoemulsification: bevel-up versus bevel-down phaco tip 显示文摘 | Faramarzi A Javadi MA Karimian F | 2011 | J Cataract Refract Surg2011，37，11： | 1 |
| 6 | Outcomes of acute postoperative inflammation after cataract surgery 显示文摘 | Mohammadpour M Jafarinasab MR Javadi MA | 2007 | Eur J Ophthalmol2007，17，： | 1 |
| 7 | Sterile Keratitis tbllowing Collagen Crosslinking显示文摘 | Javadi MA Feizi S | 2014 | J Ophthahnic Vis Res2014，4，： | 1 |
| 8 | Corneal endothelial cell loss during phacoemulsification : bevel-up versus bevel-down phaco tip 显示文摘 | Faramarsi A Javadi MA Karimian F | 2011 | J Cataract Refrac Surg2011，37，11： | 1 |
| 9 | Living-related conjunctivallimbal al- lograft for chronic or delayed-onset mustard gas keratopathy显示文摘 | Javadi MA Baradaran-Rafii A | 2009 | Cor- nea2009，28，1： | 1 |
| 10 | Lamellar keratoplasty and keratolimbal allograft for mustard gas keratitis 显示文摘 | Jafarinasab MR Feizi S Javadi MA | 2011 | Am J Ophthalmol2011，152，6： | 1 |
| 11 | Fast Screening Severe Cyber Attacks via Transient Energy-based Impact Analysis显示文摘This paper presents a transient energy based screening approach for quickly identifying potential critical attacks that might have significant impacts on power system transient stability.Specifically,the proposed approach focuses on the total transient energy injected into power systems as the result of assumptive cyber attacks.The computational improvements of the proposed method are significant as the time-domain simulations can be avoided.The efficacy of the proposed approach is demonstrated using a practical power system with various cyber attack scenarios.The identification results of the proposed method can be used to guide more detailed impact analysis and to develop more effective countermeasures against cyber attacks. | Di Wu Feng Ma Milad Javadi John N.Jiang | 2016 | CSEE Journal of Power and Energy Systems2016，2，3： | 1 |
| 12 | Amniot-ic membrane transplantation 显示文摘 | Baraxlaran-Rafii A Aghayan HR Arjmand B Javadi MA | 2008 | J Ophthalmic Vis Res2008，2，1： | 1 |
| 13 | Keratectasia after LASIK but not after PRK in one patient显示文摘 | Javadi MA Mohammadpour M Rabei HM | 2006 | J Refract Surg2006，22，： | 1 |
| 14 | Cellular changes of donor corneal tissue after deep anterior lamellar keratoplasty versus penetrating keratoplasty in eyes with keratoconus: A confocal study 显示文摘 | Feizi S Javadi MA Kanavi MR | 2010 | Cornea2010，29，： | 1 |
| 15 | Corneal endothelial cell loss during phacocmulsifieation: bevel-up versus bevel-down phaco tip显示文摘 | Faramarzi A Javadi MA Karimian F | 2011 | J Cataract Refract Surg2011，37，： | 1 |
| 16 | Outcomes of acute postoperative inflammation after cataract surgery 显示文摘 | Mohammadpour M Jafarinasab MR Javadi MA | 2007 | Eur J Ophthalmol2007，17，1： | 1 |
| 17 | Risk factors for posterior capsule rupture and vitreous loss during phacoemulsification显示文摘 | Zare M Javadi MA Einollahi B | 2009 | J Ophthalmic Vis Res2009，4，4： | 1 |
| 18 | Changes in central corneal thickness after congenital cataract surgery 显示文摘 | Faramarzi A Javadi MA Jabbarpoor Bonyadi MH | 2010 | J Cataract Refract Surg2010，36，： | 1 |
| 19 | Deep anterior lamellar keratoplasty versus penetrating keratoplasty for keratoconus: A clinical trial 显示文摘 | Javadi MA Feizi S Yazdani S | 2010 | Cornea2010，29，： | 1 |
| 20 | Modified big--bubble deep anterior lamellar keratoplasty using peripheral air injection 显示文摘 | Feizi S Faramarzi A Javadi MA | 2014 | Br J Ophthalmol2014，98，11： | 1 |
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