Critical reviews in diagnostic imaging最新文献_第2页

Review: the pericardium--a computed tomography perspective. 回顾:心包——计算机断层透视。

Critical reviews in diagnostic imaging

Pub Date : 2001-01-01 DOI: 10.3109/20014091086757

L. Lawler, K. Horton, F. Corl, Elliot K. Fishman

引用次数: 2

The role of imaging in the diagnosis and management of osteoid osteoma: a pictorial review. 影像学在类骨骨瘤诊断和治疗中的作用:影像学回顾。

Critical reviews in diagnostic imaging

Pub Date : 2001-01-01 DOI: 10.3109/20014091086784

A. C. Ho, K. Horton, E. McCarthy, E. Fishman

引用次数: 3

The imaging process. 成像过程。

Critical reviews in diagnostic imaging

Pub Date : 2001-01-01 DOI: 10.3109/20014091086694

R. C. Smith, R. Lange

引用次数: 3

CT colonography: new concepts in image display and analysis. CT结肠镜:图像显示和分析的新概念。

Critical reviews in diagnostic imaging

Pub Date : 2001-01-01 DOI: 10.3109/20014091086748

K. Horton, E. Fishman

(2001). CT Colonography: New Concepts in Image Display and Analysis. Critical Reviews in Diagnostic Imaging: Vol. 42, No. 4-5, pp. 217-227.

(2001)。CT结肠镜:图像显示和分析的新概念。影像诊断评论:Vol. 42, No. 4-5, pp. 217-227。

引用次数: 0

Visual survey of cancer dissemination: classic patterns on helical CT of the neck and thorax. 肿瘤扩散的视觉调查:颈部和胸部螺旋CT的经典模式。

Critical reviews in diagnostic imaging

Pub Date : 2001-01-01 DOI: 10.3109/20014091086720

J. C. Scatarige, B. Urban, K. Horton, F. Corl, E. Fishman

Important sites of metastasis from intrathoracic and extrathoracic primary neoplasms are depicted on helical CT of the neck and thorax. This pictorial essay reviews several of these key sites of dissemination. For each, we illustrate the typical or classic appearance on helical CT and note the commonly associated primary malignancies.

颈部和胸部的螺旋CT显示了胸内和胸外原发性肿瘤转移的重要部位。这篇图画文章回顾了其中几个主要的传播地点。对于每一种，我们都说明了螺旋CT上的典型或经典表现，并注意到通常相关的原发性恶性肿瘤。

引用次数: 0

Volume visualization in radiation treatment planning. 放射治疗计划中的体积可视化。

Critical reviews in diagnostic imaging

Pub Date : 2000-11-01 DOI: 10.3109/10408370091179244

C. Pelizzari, G. Chen

Radiation treatment planning (RTP), historically an image-intensive discipline and one of the first areas in which 3D information from imaging was clinically applied, has become even more critically dependent on accurate 3D definition of target and non-target structures in recent years with the advent of conformal radiation therapy. In addition to the interactive display of wireframe or shaded surface models of anatomic objects, proposed radiation beams, beam modifying devices, and calculated dose distributions, recently significant use has been made of direct visualization of relevant anatomy from image data. Dedicated systems are commercially available for the purpose of geometrically optimizing beam placement, implementing in virtual reality the functionality of standard radiation therapy simulators. Such "CT simulation" systems rely heavily on 3D visualization and on reprojection of image data to produce simulated radiographs for comparison with either diagnostic-quality radiographs made on a simulator or megavoltage images made using the therapeutic beams themselves. Although calculation and analysis of dose distributions is an important component of radiation treatment design, geometric targeting with optimization based on 3D anatomic information is frequently performed as a separate step independent of dose calculations.

放射治疗计划(RTP)历来是一门图像密集型学科，也是临床应用成像3D信息的首批领域之一，近年来随着适形放射治疗的出现，它变得更加依赖于精确的目标和非目标结构的3D定义。除了解剖对象的线框或阴影表面模型的交互式显示、建议的辐射束、光束修改装置和计算的剂量分布外，最近还大量使用了从图像数据中直接可视化相关解剖。专用系统是商用的，用于几何优化光束放置，在虚拟现实中实现标准放射治疗模拟器的功能。这种“CT模拟”系统在很大程度上依赖于3D可视化和图像数据的重投影来生成模拟的x线照片，以便与在模拟器上制作的诊断质量的x线照片或使用治疗光束本身制作的巨压图像进行比较。虽然剂量分布的计算和分析是放射治疗设计的重要组成部分，但基于三维解剖信息的几何靶向优化通常作为独立于剂量计算的单独步骤进行。

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引用次数: 8

Evaluation of 3D imaging. 评价三维成像。

Critical reviews in diagnostic imaging

Pub Date : 2000-10-01

M W Vannier

Interactive computer-based simulation is gaining acceptance for craniofacial surgical planning. Subjective visualization without objective measurement capability, however, severely limits the value of simulation since spatial accuracy must be maintained. This study investigated the error sources involved in one method of surgical simulation evaluation. Linear and angular measurement errors were found to be within +/- 1 mm and 1 degree. Surface match of scanned objects was slightly less accurate, with errors up to 3 voxels and 4 degrees, and Boolean subtraction methods were 93 to 99% accurate. Once validated, these testing methods were applied to objectively compare craniofacial surgical simulations to post-operative outcomes, and verified that the form of simulation used in this study yields accurate depictions of surgical outcome. However, to fully evaluate surgical simulation, future work is still required to test the new methods in sufficient numbers of patients to achieve statistically significant results. Once completely validated, simulation cannot only be used in pre-operative surgical planning, but also as a post-operative descriptor of surgical and traumatic physical changes. Validated image comparison methods can also show discrepancy of surgical outcome to surgical plan, thus allowing evaluation of surgical technique.

交互式计算机模拟在颅面外科手术规划中得到越来越多的认可。然而，由于必须保持空间精度，没有客观测量能力的主观可视化严重限制了模拟的价值。本研究探讨了一种手术模拟评估方法的误差来源。线性和角度测量误差在+/- 1毫米和1度之内。扫描对象的表面匹配精度略低，误差可达3体素4度，布尔减法的准确率为93% ~ 99%。一旦得到验证，这些测试方法被用于客观地比较颅面手术模拟与术后结果，并验证本研究中使用的模拟形式能够准确描述手术结果。然而，为了充分评估手术模拟，未来的工作仍然需要在足够数量的患者中测试新方法，以获得具有统计学意义的结果。一旦完全验证，模拟不仅可以用于术前手术计划，还可以作为术后手术和创伤性身体变化的描述符。经过验证的图像比较方法也可以显示手术结果与手术计划的差异，从而对手术技术进行评估。

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引用次数: 0

Evaluation of 3D imaging. 评价三维成像。

Critical reviews in diagnostic imaging

Pub Date : 2000-09-01 DOI: 10.3109/10408370091179235

M. Vannier

Interactive computer-based simulation is gaining acceptance for craniofacial surgical planning. Subjective visualization without objective measurement capability, however, severely limits the value of simulation since spatial accuracy must be maintained. This study investigated the error sources involved in one method of surgical simulation evaluation. Linear and angular measurement errors were found to be within +/- 1 mm and 1 degree. Surface match of scanned objects was slightly less accurate, with errors up to 3 voxels and 4 degrees, and Boolean subtraction methods were 93 to 99% accurate. Once validated, these testing methods were applied to objectively compare craniofacial surgical simulations to post-operative outcomes, and verified that the form of simulation used in this study yields accurate depictions of surgical outcome. However, to fully evaluate surgical simulation, future work is still required to test the new methods in sufficient numbers of patients to achieve statistically significant results. Once completely validated, simulation cannot only be used in pre-operative surgical planning, but also as a post-operative descriptor of surgical and traumatic physical changes. Validated image comparison methods can also show discrepancy of surgical outcome to surgical plan, thus allowing evaluation of surgical technique.

交互式计算机模拟在颅面外科手术规划中得到越来越多的认可。然而，由于必须保持空间精度，没有客观测量能力的主观可视化严重限制了模拟的价值。本研究探讨了一种手术模拟评估方法的误差来源。线性和角度测量误差在+/- 1毫米和1度之内。扫描对象的表面匹配精度略低，误差可达3体素4度，布尔减法的准确率为93% ~ 99%。一旦得到验证，这些测试方法被用于客观地比较颅面手术模拟与术后结果，并验证本研究中使用的模拟形式能够准确描述手术结果。然而，为了充分评估手术模拟，未来的工作仍然需要在足够数量的患者中测试新方法，以获得具有统计学意义的结果。一旦完全验证，模拟不仅可以用于术前手术计划，还可以作为术后手术和创伤性身体变化的描述符。经过验证的图像比较方法也可以显示手术结果与手术计划的差异，从而对手术技术进行评估。

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引用次数: 17

Radiologic features of pediatric thalamic and hypothalamic tumors. 小儿丘脑和下丘脑肿瘤的影像学特征。

Critical reviews in diagnostic imaging

Pub Date : 2000-08-01

D R Lefton, R S Pinto, V M Silvera, F A DeLara, J B Schwartz, J O Haller

A variety of histologic subtypes of tumor may affect the thalamus and the hypothalamus in the pediatric population. These tumors have radiologic features that are useful in predicting pathology. We discuss the radiologic findings of childhood thalamic and hypothalamic tumors and provide imaging examples.

多种组织学亚型的肿瘤可能影响儿童的丘脑和下丘脑。这些肿瘤具有有助于预测病理的放射学特征。我们讨论儿童丘脑和下丘脑肿瘤的影像学表现，并提供影像学例子。

引用次数: 0

Wegener's granulomatosis: spectrum of CT findings in diagnosis, disease progression, and response to therapy. 韦格纳肉芽肿病:诊断、疾病进展和治疗反应的CT表现谱。

Critical reviews in diagnostic imaging

Pub Date : 2000-08-01

E S Pretorius, J H Stone, D B Hellmann, E K Fishman

引用次数: 0