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| 1 | Feasibility study of computed vs measured high b-value(1400 s/mm2) diffusion-weighted MR images of the prostate显示文摘AIM: To evaluate the impact of computed b = 1400 s/mm2(C-b1400) vs measured b = 1400 s/mm2(M-b1400) diffusion-weighted images(DWI) on lesion detection rate, image quality and quality of lesion demarcation using a modern 3T-MR system based on a small-field-of-view sequence(sFOV). METHODS: Thirty patients(PSA: 9.5 ± 8.7 ng/mL; 68 ± 12 years) referred for magnetic resonance imaging(MRI) of the prostate were enrolled in this study. All measurements were performed on a 3T MR system.For DWI, a single-shot EPI diffusion sequence(b = 0, 100, 400, 800 s/mm2) was utilized. C-b1400 was cal-culated voxelwise from the ADC and diffusion images. Additionally, M-b1400 was acquired for evaluation and comparison. Lesion detection rate and maximum lesion diameters were obtained and compared. Image quality and quality of lesion demarcation were rated accord-ing to a 5-point Likert-type scale. Ratios of lesion-to-bladder as well as prostate-to-bladder signal intensity(SI) were calculated to estimate the signal-to-noise-ratio(SNR). RESULTS: Twenty-four lesions were detected on M-b1400 images and compared to C-b1400 images. C-b1400 detected three additional cancer suspicious lesions. Overall image quality was rated significantly better and SI ratios were significantly higher on C-b1400(2.3 ± 0.8 vs 3.1 ± 1.0, P < 0.001; 5.6 ± 1.8 vs 2.8 ± 0.9, P < 0.001). Comparison of lesion size showed no significant differences between C- and M-b1400(P = 0.22). CONCLUSION: Combination of a high b-value extrap-olation and sFOV may contribute to increase diagnostic accuracy of DWI without an increase of acquisition time, which may be useful to guide targeted prostate biopsies and to improve quality of multiparametric MRI(mMRI) especially under economical aspects in a pri-vate practice setting. | Leonardo K Bittencourt Ulrike I Attenberger Daniel Lima Ralph Strecker Andre de Oliveira Stefan O Schoenberg Emerson L Gasparetto Daniel Hausmann | 2014 | World Journal of Radiology2014，6，6： | 5 |
| 2 | The high frequency of EBV infection in pediatric Hodgkin lymphoma is related to the classical type in Bahia, Brazil 显示文摘 | Araujo I Bittencourt AL Barbosa HS | 2006 | Virchow Arch2006，449，3： | 1 |
| 3 | A computational model for developing semantic Web-based educational systems 显示文摘 | BITTENCOURT I COSTA E SILVA M | 2009 | Knowledge-based Systems2009，22，4： | 1 |
| 4 | Selection of binders for in-situ spinel refraetory castables显示文摘 | Braulio M A L Bittencourt I R M Pandolfelli V C | 2009 | Journal of the European Ceramic Society2009，29，： | 1 |
| 5 | Magnetic declination of the equatorial F region dynamo electric field development and spread 显示文摘 | ABDU M A BITTENCOURT J A BATISTA I S | 1981 | J Geophys Res1981，86，11： | 1 |
| 6 | Detection/of Theileria equi in spleen and blood of asymptomatic piro- plasm carrier horses显示文摘 | Ribeiro I B Comara A C L Bittencourt M V | 2013 | Acta Parasitologica2013，58，2： | 1 |
| 7 | Burkitt's lymphoma of the scapula 显示文摘 | Bittencourt AL Araujo I Carvalho EG | 2003 | Pediatr Pathol Mol Med2003，22，4： | 1 |
| 8 | Molecular ap- proaches: advantages and artifacts in assessing bacterial di- versity显示文摘 | Daniela S Pontes Claudia I Lima Bittencourt | 2007 | Journal of Industrial Microbiology & Biotechnolo- gy2007，34，7： | 1 |
| 9 | Cutaneous protothe-cosis:report of the second Brazilian case显示文摘 | Follador I Bittencourt A Duran F | 2001 | Rev Inst MedTrop Sao Paulo2001，43，5： | 1 |
| 10 | Assessing autonomic function in hypertrophic cardiomyopathy显示文摘 | Bittencourt M I Benchimol Barbosa P R Drumond Neto C | 2005 | Arq Bras Cardiol2005，85，6： | 1 |
| 11 | The high frequency of EBV infection in pediatric Hodgkin lymphoma is related to the classical type in Bahia,Brazil显示文摘 | Araujo I Bittencourt A L Barbosa H S | 2006 | Virchows Arch2006，449，3： | 1 |
| 12 | Upper airway surgery:the effect on nasal continuous positive airway pressure titration on obstructive sleep apnea patients显示文摘 | ZONATO A I BITTENCOURT L R MARTINHO F L | 2006 | Eur Arch Otorhinolaryngol2006，263，： | 1 |
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