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    • 2. 发明申请
    • SCANNING METHOD AND SYSTEM
    • 扫描方法与系统
    • US20100316279A1
    • 2010-12-16
    • US12809080
    • 2008-12-26
    • Kirsten MeetzIngwer Curt Carlsen
    • Kirsten MeetzIngwer Curt Carlsen
    • G06K9/00
    • A61B6/504A61B6/501
    • To improve the scanning effect, a scanning method is provided, which comprises the steps of performing at least one of an nCT scan and a CTA scan on an object so as to obtain a set of images; detecting characteristics of a region of interest based on the set of images; and performing a CTP scan on the region of interest by adopting the characteristics to obtain a CTP image. By deriving the characteristics of the region of interest, e.g. a lesion or an area covering the lesion, before performing the CTP scan, and by adapting the subsequent CTP scan based on the characteristics of the region of interest, the drawback introduced by a limited scan area of the CTP scanner is mitigated, or even overcome.
    • 为了提高扫描效果,提供了扫描方法,其包括以下步骤:对物体执行nCT扫描和CTA扫描中的至少一个以获得一组图像; 基于所述图像集来检测感兴趣区域的特征; 并通过采用特征来获得CTP图像来对感兴趣区域进行CTP扫描。 通过导出感兴趣区域的特征,例如, 病变或覆盖病变的区域,在执行CTP扫描之前,并且通过基于感兴趣区域的特征适应随后的CTP扫描,减轻CTP扫描器的有限扫描区域引入的缺点,甚至克服 。
    • 5. 发明申请
    • ADJUSTING ACQUISITION PROTOCOLS FOR DYNAMIC MEDICAL IMAGING USING DYNAMIC MODELS
    • 使用动态模型调整动态医学成像采集协议
    • US20100183206A1
    • 2010-07-22
    • US12665441
    • 2008-06-19
    • Ingwer Curt CarlsenDaniel Bystrov
    • Ingwer Curt CarlsenDaniel Bystrov
    • G06K9/00
    • A61B6/032A61B5/7285A61B6/037A61B6/488A61B6/541G06T7/149G06T7/215G06T2207/10076G06T2207/30004
    • The invention relates to automatically adjusting an acquisition protocol for dynamic medical imaging, such as dynamic CT, MRI or PET imaging. The protocols are adjusted based on anatomic and dynamic models (10, 12, 14) which are individualized or fitted to each patient based on a scout scan (6, 8). The adjustment can compensate for changes in the patient due to patient motion (e.g. breathing or heartbeat) or flow of contrast or tracing agent during the sequence. This ensures that changes in the reconstructed images are indicative of pathological changes in the patient and not caused by patient motion or changes in scanning parameters or timing. The dynamic model can be a motion model (12) used to predict the motion of anatomic/physiologic features, typically organs, during scanning, or a haemodynamic model (14) used to predict flow of the contrast agent allowing for precise timing of the scanning sequence.
    • 本发明涉及自动调整用于动态医学成像的采集协议,例如动态CT,MRI或PET成像。 基于解剖和动态模型(10,12,14)调整协议,这些解剖和动态模型基于侦察扫描(6,8)对每个患者进行个性化或拟合。 该调整可以补偿由于患者运动(例如呼吸或心跳)或对比剂或跟踪剂在序列期间的流动引起的患者的变化。 这确保重建图像中的改变指示患者的病理变化,而不是由患者运动或扫描参数或时间的变化引起的。 动态模型可以是用于预测解剖/生理特征(通常是器官)在扫描期间的运动的运动模型(12)或用于预测造影剂的流动的血液动力学模型(14),其允许扫描的精确定时 序列。