Volume 27, Issue 2

The high complexity of cortical convolutions in humans is very challenging both for engineers to measure and compare it, and for biologists and physicians to understand it. In this paper, we propose a surface-based method for the quantification of cortical gyrification. Our method uses accurate 3-D cortical reconstruction and computes local measurements of gyrification at thousands of points over the whole cortical surface. The potential of our method to identify and localize precisely gyral abnormalities is illustrated by a clinical study on a group of children affected by 22q11 Deletion Syndrome, compared to control individuals.

人类皮层卷积的高度复杂性对工程师测量和比较它，以及对生物学家和医生理解它都极具挑战性。在本文中，我们提出了一种基于表面的皮层回旋量化方法。我们的方法使用精确的三维皮层重建，并在整个皮层表面的数千个点上计算回旋的局部测量。通过对一组患有22q11缺失综合征的儿童与对照个体的临床研究，展示了我们的方法在精确定位和识别脑回异常方面的潜力。

In this paper, a method is proposed for detecting blood vessels in pathological retina images. In the proposed method, blood vessel-like objects are extracted using the Laplacian operator and noisy objects are pruned according to the centerlines, which are detected using the normalized gradient vector field. The method has been tested with all the pathological retina images in the publicly availab...

本文提出了一种检测病理视网膜图像中血管的方法。该方法利用拉普拉斯算子提取类似血管的目标，并根据归一化梯度向量场检测的中心线去除噪声目标。该方法已在公开可用的所有病理视网膜图像上进行了测试...

Modern medical imaging modalities provide large amounts of information in both the spatial and temporal domains and the incorporation of this information in a coherent algorithmic framework is a significant challenge. In this paper, we present a novel and intuitive approach to combine 3-D spatial and temporal (3-D + time) magnetic resonance imaging (MRI) data in an integrated segmentation algorith...

现代医学成像模式在空间和时间维度上提供了大量信息，如何将这些信息整合到一个连贯的算法框架中是一个重大挑战。本文提出了一种新颖且直观的方法，将3-D空间和时间（3-D+时间）磁共振成像（MRI）数据集成到一个分割算法中...

This paper presents a new nonrigid monomodality image registration algorithm based on $B$-splines. The deformation is described by a cubic $B$-spline field and found by minimizing the energy between a reference image and a deformed version of a floating image. To penalize noninvertible transformation, we propose two different constraints on the Jacobian of the transformation and its derivatives. T...

本文提出了一种基于B样条的非刚性单模态图像配准算法。变形由三次B样条场描述，并通过最小化参考图像与浮动图像变形版本之间的能量来求解。为了惩罚不可逆变换，我们提出了两种不同的约束条件，分别作用于变换的雅可比矩阵及其导数。...

This paper describes a ultrasound (3D US) system that aims to achieve augmented reality (AR) visualization during laparoscopic surgery, especially for the liver. To acquire 3D US data of the liver, the tip of a laparoscopic ultrasound probe is tracked inside the abdominal cavity using a magnetic tracker. The accuracy of magnetic trackers, however, is greatly affected by magnetic field distortion t...

本文描述了一个三维超声（3D US）系统，旨在实现腹腔镜手术中的增强现实可视化，特别是针对肝脏。为了获取肝脏的三维超声数据，使用磁跟踪器在腹腔内追踪腹腔镜超声探头尖端。然而，磁跟踪器的准确性受到磁场畸变的严重影响...

In this paper, a 2-D locally regularized strain estimation method for imaging deformation of soft biological tissues from radio-frequency (RF) ultrasound (US) data is introduced. Contrary to most 2-D techniques that model the compression-induced local displacement as a 2-D shift, our algorithm also considers a local scaling factor in the axial direction. This direction-dependent model of tissue mo...

本文介绍了一种基于射频（RF）超声（US）数据的二维局部正则化应变估计方法，用于成像软生物组织的变形。与大多数将压缩引起的局部位移建模为二维平移的二维技术相反，我们的算法还考虑了轴向方向的局部缩放因子。这种方向依赖的组织模型...

The paper investigates the geometric calibration of a rotating gamma camera for pinhole (PH) single photon emission computed tomography (SPECT) imaging. Most calibration methods previously applied in PH-SPECT assume that the motion of the camera around the object belongs to a well-defined class described by a small number of geometric parameters, for instance seven parameters for a circular acquis...

本文研究了旋转伽马相机用于针孔单光子发射计算机断层扫描（SPECT）成像的几何校准。先前应用于PH-SPECT的大多数校准方法假设相机围绕物体的运动属于由少量几何参数描述的明确定义的类别，例如圆形采集的七个参数...

Simultaneous capturing of ultrasound (US) and magnetic resonance (MR) images allows fusion of information obtained from both modalities. We propose an MR-compatible US system where MR images are acquired in a known orientation with respect to the US imaging plane and concurrent real-time imaging can be achieved. Compatibility of the two imaging devices is a major issue in the physical setup. Tests...

同步采集超声（US）和磁共振（MR）图像可以实现两种模态信息的融合。我们提出了一种MR兼容的超声系统，其中MR图像以相对于超声成像平面已知的方向获取，并且可以实现并发实时成像。两种成像设备的兼容性是物理设置中的主要问题。测试...

Complete projection (360deg) free-space fluorescence tomography of opaque media is poised to enable 3-D imaging through entire small animals in vivo with improved depth resolution compared to 360deg-projection fiber-based systems or limited-view angle systems. This approach can lead to a new generation of fluorescence molecular tomography (FMT) performance since it allows high spatial sampling of ...

对不透明介质进行全投影（360°）自由空间荧光断层成像，有望实现对整个小动物体内的三维成像，与基于360°投影光纤系统或有限视角系统相比，深度分辨率得到改善。这种方法可以实现新一代荧光分子断层成像（FMT）性能，因为它允许高空间采样...

Classification of a given observation to one of three classes is an important task in many decision processes or pattern recognition applications. A general analysis of the performance of three-class classifiers results in a complex 6-D receiver operating characteristic (ROC) space, for which no simple analytical tool exists at present. We investigate the performance of an ideal observer under a s...

将给定观察结果分类为三类之一在许多决策过程或模式识别应用中是一项重要任务。对三类分类器性能的一般分析会产生一个复杂的六维接收器工作特性（ROC）空间，目前尚无简单的分析工具。我们研究了理想观察者在s...下的性能。

It has been recognized that one of the most difficult steps in intramedullary nailing of femoral shaft fractures is the distal locking- the insertion of distal transverse interlocking screws, for which it is necessary to know the positions and orientations of the distal locking holes (DLHs) of the intramedullary nail (IMN). This paper presents a robust and accurate approach for solving this proble...

众所周知，股骨干骨折髓内钉固定中最困难的步骤之一是远端锁定——插入远端横向交锁螺钉，为此需要知道髓内钉（IMN）上远端锁定孔（DLH）的位置和方向。本文提出了一种鲁棒且精确的方法来解决这个问题...

Cerebral palsy (CP) develops as a consequence of white matter damage (WMD) in approximately one out of every 10 very preterm infants. Ultrasound (US) is widely used to screen for a variety of brain injuries in this patient population, but early US often fails to detect WMD. We hypothesized that quantitative texture measures on US images obtained within one week of birth are associated with the sub...

脑瘫（CP）是由于白质损伤（WMD）导致的，大约每10名极早产儿中就有1名发生。超声（US）广泛用于筛查该患者群体的各种脑损伤，但早期超声常常无法检测到WMD。我们假设在出生一周内获得的超声图像上的定量纹理测量与...

Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.

请潜在作者提交新的、未出版的手稿，以便纳入本次征文通知中描述的即将举行的活动。

Provides instructions and guidelines to prospective authors who wish to submit manuscripts.

为希望提交手稿的潜在作者提供指导和说明。

Presents the table of contents for this issue of the periodical.

介绍本期刊这一期的目录。

Provides notice of upcoming special issue(s) of interest to practitioners and researchers.

为从业者和研究人员提供即将举办的感兴趣的特刊通知。

Provides notice of upcoming conference events of interest to practitioners and researchers.

为从业者和研究人员提供即将举行的会议活动的通知。

Provides a listing of current staff, committee members and society officers.

提供当前工作人员、委员会成员及学会官员列表。

This page or pages intentionally left blank.

本页或这些页有意留空。