公开(公告)号：US09842401B2

公开(公告)日：2017-12-12

申请号：US14912101

申请日：2014-08-19

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Sven Prevrhal ,  Hannes Nickisch ,  Holger Schmitt

IPC: G06K9/00 ,  G06T7/00 ,  G06T7/11 ,  A61B5/02

CPC classification number: G06T7/0012 ,  G06T7/11 ,  G06T2207/20104 ,  G06T2207/30048 ,  G06T2207/30104 ,  G06T2210/41

Abstract: The present invention relates a segmentation apparatus (10) for interactively segmenting blood vessels (2) in angiographic image data (3). The segmentation apparatus (10) comprises a significant location determining unit (11) for determining one or more locations of a current segmentation (4) of the blood vessels (2) in the angiographic image data (3) as significant locations (5) at which the current segmentation (4) has a predetermined influence on a value of a blood flow parameter that is calculated based on the current segmentation (4), and a display unit (12) for displaying the significant locations (5) to an operator. Thereby, the operator can be guided to focus his/her segmentation efforts to those locations of the current segmentation (4) that are most relevant for the accuracy of the calculation of the value of the blood flow parameter. This may ease the burden on the operator during the segmentation procedure.

公开(公告)号：US09788807B2

公开(公告)日：2017-10-17

申请号：US14912241

申请日：2014-08-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Holger Schmitt ,  Hannes Nickisch ,  Sven Prevrhal

IPC: A61B6/00 ,  A61B6/03 ,  G06T7/254

CPC classification number: A61B6/503 ,  A61B6/032 ,  A61B6/461 ,  A61B6/463 ,  A61B6/466 ,  A61B6/504 ,  A61B6/507 ,  A61B6/5217 ,  G06T7/254 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2207/30104

Abstract: The invention relates to a processing apparatus for processing cardiac data of a living being and to an imaging system comprising the processing apparatus. A distribution of Fractional flow reserve (FFR) values being indicative of the FFR of different coronary arteries of the living being, a distribution of myocardial perfusion values like values of an iodine map being indicative of the myocardial perfusion of different portions of the myocardium of the living being and assignments between coronary arteries and portions of the myocardium of the living being are used for determining degrees of correspondence between FFR values and myocardial perfusion values. This allows for, for example, a determination of the reliability of the FFR values, if the myocardial perfusion values are known to be reliable, based on the determined degrees of correspondence.

公开(公告)号：US09332952B2

公开(公告)日：2016-05-10

申请号：US14348908

申请日：2012-10-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Sven Prevrhal ,  Eberhard Sebastian Hansis ,  Jason Stephen Wiener ,  Joerg Bredno ,  David Sowards-Emmerd ,  Lingxiong Shao

IPC: A61B6/00 ,  G01T1/29 ,  A61B6/04 ,  A61K51/00 ,  A61B6/03

CPC classification number: A61B6/5205 ,  A61B6/037 ,  A61B6/0407 ,  A61B6/469 ,  A61B6/481 ,  A61B6/5294 ,  A61B6/544 ,  A61B6/547 ,  A61K51/00 ,  A61K2121/00 ,  A61K2123/00 ,  G01T1/2985

Abstract: In Positron Emission Tomography, a time window (260) and an energy window (225) are dynamically adjusted, based on an attenuation map, count rate, clinical application, discrimination tailoring, and/or offline discrimination tailoring. Detected radiation events are filtered using the dynamically adjusted energy and time windows into scattered events, random events, and true events. The true events are input to image reconstruction, correction, and error analysis.

Abstract translation: 在正电子发射断层扫描中，基于衰减图，计数率，临床应用，鉴别裁剪和/或脱机鉴别裁剪来动态调整时间窗（260）和能量窗（225）。 使用动态调整的能量和时间窗将检测到的辐射事件过滤成分散事件，随机事件和真实事件。 真实事件被输入到图像重建，校正和误差分析。