| 54 |
Title |
TI |
[DE] Verfahren zur Bestimmung der arteriellen Inputfunktion für Perfusionsmessungen und C-Bogen-Röntgengerät
[EN] Measurement of arterial input function, during perfusion, uses two-dimensional X-ray projections and mask X-ray projections to compute a volume image |
| 71/73 |
Applicant/owner |
PA |
Siemens Aktiengesellschaft, 80333 München, DE
|
| 72 |
Inventor |
IN |
Boese, Jan, Dr., 90542 Eckental, DE
;
Deuerling-Zheng, Yu, 91052 Erlangen, DE
;
Fieselmann, Andreas, 91054 Erlangen, DE
;
Zellerhoff, Michael, Dr., 91301 Forchheim, DE
|
| 22/96 |
Application date |
AD |
Jan 9, 2009 |
| 21 |
Application number |
AN |
102009004184 |
|
Country of application |
AC |
DE |
|
Publication date |
PUB |
Jul 29, 2010 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
|
| 51 |
IPC main class |
ICM |
A61B 6/03
(2006.01)
|
| 51 |
IPC secondary class |
ICS |
A61B 6/02
(2006.01)
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
A61B 6/481
A61B 6/504
A61B 6/507
|
|
MCD main class |
MCM |
A61B 6/03
(2006.01)
|
|
MCD secondary class |
MCS |
A61B 6/02
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[DE] Die Erfindung betrifft ein Verfahren zur Bestimmung der arteriellen Inputfunktion C(t) für Perfusionsmessungen basierend auf mit einem C-Bogen-Röntgengerät (2) gewonnenen 2-D-Röntgenprojektionen (P-P) sowie ein C-Bogen-Röntgengerät (2) mit einer Recheneinheit (8) zur Durchführung des Verfahrens. Zu bestimmten aufeinanderfolgenden Zeitpunkten (t-t) werden 2-D-Röntgenprojektionen (P-P) von einem mit einem Kontrastmittel versehenen arteriellen Gefäßbaum (20) aufgenommen und die Kontrastmittelkonzentrationen zu den Aufnahmezeitpunkten (t-t) der 2-D-Röntgenprojektionen (P-P) aus den Pixelwerten der 2-D-Röntgenprojektionen (P-P) ermittelt, welche die arterielle Inputfunktion C(t) bilden.
[EN] To determine the arterial input function for perfusion measurement, using two-dimensional X-ray projections (P1'-P24') from a C-arm X-ray machine, the machine is directed at the patient's tissue for the arterial trunk (20) of interest. A series of two-dimensional mask X-ray projections (M1-M8) is taken at timed intervals to give a mask volume image of the tissue. Each projection is of a different location (W1-W8). After the injection of a contrast agent, a further series of projections is taken for a further mask volume image. The first volume image is subtracted from the second to give a volume image of the arterial trunk. A point (T) is selected at the artery (21) for the arterial input function to be established using the image pixel values (PW2,MPW2). |
| 56 |
Cited documents identified in the search |
CT |
DE102004055770A1
US020040252809A1
WO002005087107A1
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
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| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
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Citing documents |
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Determine documents
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Sequence listings |
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Search file IPC |
ICP |
A61B 6/02
A61B 6/03
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