نتایج جستجو برای: s) test histogram p

تعداد نتایج: 2453274  

Journal: :AJNR. American journal of neuroradiology 2011
W B Pope A Lai R Mehta H J Kim J Qiao J R Young X Xue J Goldin M S Brown P L Nghiemphu A Tran T F Cloughesy

BACKGROUND AND PURPOSE Currently it is difficult to predict tumor response to anti-angiogenic therapy in individual patients. Our aim was to determine if ADC histogram analysis can stratify progression-free and overall survival in patients with newly diagnosed GBM treated "up-front" (ie, before tumor recurrence) with bevacizumab. MATERIALS AND METHODS Up-front bevacizumab-treated and control ...

Honda T Isurugi C Murai M Omi H Oyama R, Takatori E

Background: The aim of this study was to investigate the ability of three-dimensional (3D) ultrasonography and anti-Mullerian hormone (AMH) to predict successful embryo development in patients undergoing in vitro fertilization (IVF) treatment. Materials and Methods: We prospectively studied 28 patients undergoing IVF treatment, using 3D ultrasound Sono automatic volume calculation (AVC) and a 3...

2013
Hyungjin Kim Seung Hong Choi Ji-Hoon Kim Inseon Ryoo Soo Chin Kim Jeong A. Yeom Hwaseon Shin Seung Chai Jung A. Leum Lee Tae Jin Yun Chul-Kee Park Chul-Ho Sohn Sung-Hye Park

BACKGROUND Glioma grading assumes significant importance in that low- and high-grade gliomas display different prognoses and are treated with dissimilar therapeutic strategies. The objective of our study was to retrospectively assess the usefulness of a cumulative normalized cerebral blood volume (nCBV) histogram for glioma grading based on 3 T MRI. METHODS From February 2010 to April 2012, 6...

Journal: :AJNR. American journal of neuroradiology 2007
M Law R Young J Babb E Pollack G Johnson

BACKGROUND AND PURPOSE Histogram analysis can be applied to dynamic susceptibility contrast (DSC) perfusion MR imaging datasets and can be as effective as traditional region-of-interest (ROI) measurements of relative cerebral blood volume (rCBV), an operator-dependent method. We compare the routine ROI method with histogram analysis in the grading of glial neoplasms. MATERIALS AND METHODS Nin...

2018
Wei Zhang Yue Zhou Xiao-Quan Xu Ling-Yan Kong Hai Xu Tong-Fu Yu Hai-Bin Shi Qing Feng

Objective To assess the performance of a whole-tumor histogram analysis of apparent diffusion coefficient (ADC) maps in differentiating thymic carcinoma from lymphoma, and compare it with that of a commonly used hot-spot region-of-interest (ROI)-based ADC measurement. Materials and Methods Diffusion weighted imaging data of 15 patients with thymic carcinoma and 13 patients with lymphoma were ...

2015
Davide Colombi Julien Dinkel Oliver Weinheimer Berenike Obermayer Teodora Buzan Diana Nabers Claudia Bauer Ute Oltmanns Karin Palmowski Felix Herth Hans Ulrich Kauczor Nicola Sverzellati Michael Kreuter Claus Peter Heussel Joshua M. Hare

OBJECTIVES To describe changes over time in extent of idiopathic pulmonary fibrosis (IPF) at multidetector computed tomography (MDCT) assessed by semi-quantitative visual scores (VSs) and fully automatic histogram-based quantitative evaluation and to test the relationship between these two methods of quantification. METHODS Forty IPF patients (median age: 70 y, interquartile: 62-75 years; M:F...

2003
David Mayer-Foulkes

This paper construct a family of non-linearity tests based on the distance histogram C(m, ε) underlying Grassberger and Procaccia’s Correlation Dimension (CD), Brock, Dechert and Sheink-man’s (BDS) statistic, Mizrach’s Simple Non-Parametric Test (SNT) and Mayer’s Correlation Dimension Ratio (CDR). Two new elements are introduced. The Þrst is homogenizing the data to the uniform or to the normal...

2016
Toshikazu Shindo Yoshihiko Fukukura Tomokazu Umanodan Koji Takumi Hiroto Hakamada Masanori Nakajo Aya Umanodan Junichi Ideue Kiyohisa Kamimura Takashi Yoshiura

The aim of this study was to investigate whether histogram analysis in diffusion-weighted (DW) magnetic resonance imaging (MRI) can help differentiate pancreatic adenocarcinomas from neuroendocrine tumors.Sixty-four patients with histologically confirmed 53 pancreatic adenocarcinomas or 19 neuroendocrine tumors underwent DW MRI. We evaluated the pixel distribution histogram parameters (mean, sk...

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