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| 1 | 有为腹的 CT 的非线性的适应过滤器的申请的放射剂量减小显示文摘 AIM:To evaluate the effect of non-linear adaptive filters (NLAF) on abdominal computed tomography (CT) images acquired at different radiation dose levels.METHODS:Nineteen patients (mean age 61.6 ± 7.9 years,M:F=8:11) gave informed consent for an Institutional Review Board approved prospective study involving acquisition of 4 additional image series (200,150,100,50 mAs and 120 kVp) on a 64 slice multidetector row CT scanner over an identical 10 cm length in the abdomen.The CT images acquired at 150,100 and 50 mAs were processed with the NLAF.Two radiologists reviewed unprocessed and processed images for image quality in a blinded randomized manner.CT dose index volume,dose length product,patient weight,transverse diameters,objective noise and CT numbers wererecorded.Data were analyzed using Analysis of Variance and Wilcoxon signed rank test.RESULTS:Of the 31 lesions detected in abdominal CT images,28 lesions were less than 1 cm in size.Subjective image noise was graded as unacceptable in unprocessed images at 50 and 100 mAs,and in NLAF processed images at 50 mAs only.In NLAF processed images,objective image noise was decreased by 21% (14.4 ± 4/18.2 ± 4.9) at 150 mAs,28.3% (15.7 ± 5.6/21.9 ± 4) at 100 mAs and by 39.4% (18.8 ± 9/30.4 ± 9.2) at 50 mAs compared to unprocessed images acquired at respective radiation dose levels.At 100 mAs the visibility of smaller structures improved from suboptimal in unprocessed images to excellent in NLAF processed images,whereas diagnostic confidence was respectively improved from probably confident to fully confident.CONCLUSION:NLAF lowers image noise,improves the visibility of small structures and maintains lesion conspicuity at down to 100 mAs for abdominal CT. | Sarabjeet Singh Mannudeep K Kalra Mi Kim Sung Anni Back Michael A Blake | 2012 | World Journal of Radiology2012，4，1： | 3 |
| 2 | On the fundamental theorem of asset pricing with an infinite state space显示文摘 | Pliska | 1991 | J Math Ecom1991，20，： | 1 |
| 3 | Synthesis of end- functionalized poly ( methyl methacrylate) by ruthenium - catalyzed living radical polymerization with functionalized Initiators 显示文摘 | Back K Y Kamigaito M Sawamoto M | 2002 | Journal of Polymer Science: Part A: Polymer Chemistry2002，40，： | 1 |
| 4 | Chirp (2~7 kHz) echo characters of the South Korea Plateau,East Sea:Styles of mass movement and sediment gravity flow显示文摘 | LEE S H CHOUGH S K BACK G G | 2002 | Marine Geology2002，184，： | 1 |
| 5 | Pre-and post-casino impact of residents' perception显示文摘 | Lee C K Back K J | 2003 | Annals of Tourism Research2003，30，4： | 1 |
| 6 | The immunohistochemical overexpression of ribonucleotide reductase regulatory subunit M1 ( RRMI ) protein is a predictor of shorter survival to gemcitabine-based chemotherapy in advanced non-small cell lung cancer (NSCLC)显示文摘 | Lee J J Maeng C H Back S K | 2010 | Lung Cancer2010，70，2： | 1 |
| 7 | Constitutively wilted 1,a member of the rice YUCCA gene family,is required for maintaining water homeostasis and an appropriate root to shoot ratio显示文摘 | Woo Y M Park H J Su'udi M Yang J I Park J J Back K Park Y M An G | 2007 | Plant Molecular Biology2007，65，1： | 1 |
| 8 | A review of convention and meeting management research 1990 - 2003 显示文摘 | Lee M J Back K J | 2005 | Journal of Convention & Event Tourism2005，7，2： | 1 |
| 9 | Scalable production of large quantities of defect-free few-layer graphene by shear exfoliation in liquids显示文摘 | Paton K R Varrla E Backes C | 2014 | Nature Materials2014，13，6： | 1 |
| 10 | Auctions of divisible goods: On the rationale for the treasury experiment显示文摘 | Back K Zender J | 1993 | Review of Financial Studies1993，6，4： | 1 |
| 11 | ^1H MR Spectroscopy of the brain: absolute quantification of metabolites显示文摘 | Jacobus J F Backes W H Nicolay K | 2006 | Radiology2006，240，2： | 1 |
| 12 | Natural algorithms for choosing source locations in active control systems 显示文摘 | Back K H Elliott S J | 1995 | Journal of Sound and Vibration1995，186，2： | 1 |
| 13 | Ring strain and total syntheses of modified macrocycles of the isoplagiochin type 显示文摘 | SPEICHER A BACKES T HESIDENS K | 2009 | Beilstein J Org Chem2009，5，： | 1 |
| 14 | Indentation size effect in metallic materials : correcting for the size of the plastic zone 显示文摘 | Durst K Backes B Goken M | 2005 | Scr Mater2005，52，11： | 1 |
| 15 | Auctions of Divisible Goods: On the Rationale for the Treasury Experiment显示文摘 | Back K Jaime F Zender | 1993 | The Review of Financial Studies1993，，6： | 1 |
| 16 | Auctions of divisible goods with endogenous supply 显示文摘 | Back K Zender J | 2001 | Economic Letters2001，73，2： | 1 |
| 17 | Characterization of nova plasmas using an X-ray spectrometer with temporal and spatial resolution显示文摘 | BACK C A AUFFMAN R L K BELL P M | 1995 | Review of Scientific Instruments1995，66，1： | 1 |
| 18 | ER stress signaling by regulated splicing: IREI/HAC1/XBPI显示文摘 | BACK S H SCHRODER M LEE K | 2005 | Methods2005，35，4： | 1 |
| 19 | Attendee-based brand equity 显示文摘 | Lee J S Back K J | 2008 | Tourism Management2008，29，2： | 1 |
| 20 | Two-year field study shows little evidence that PPO-transgenic rice affects the structure of soil microbial communities显示文摘 | Chun Y J Kim H J Park K W Jeong S C Lee B Back K Kim H M and Kim C G | | 0，，： | 1 |
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