Surface-Based Respiratory Motion Classification and Verification

Published on Jan 1, 2009
· DOI :10.1007/978-3-540-93860-6_52
Kerstin Müller8
Estimated H-index: 8
Christian Schaller8
Estimated H-index: 8
+ 1 AuthorsJoachim Hornegger65
Estimated H-index: 65
To ensure precise tumor irradiation in radiotherapy a stable breathing pattern is mandatory as tumors are moving due to respiratory motion. Consequentially, irregularities of respiratory patterns have to be detected immediately. The causal motion of tissue also differs due to different physiological types of respiration, e.g., chest-or abdominal breathing. Currently used devices to measure respiratory motion do not incorporate complete surface deformations. Instead only small regions of interest are considered. Thereby, valuable information to detect different breathing patterns and types are lost. In this paper we present a system that uses a novel camera sensor called Time-of-Flight (ToF) for automatic classification and verification of breathing patterns. The proposed algorithm calculates multiple volume signals of different anatomical regions of the upper part of the patient’s body. Therefore disjoint regions of interest are defined for both, the patient’s abdomen and thorax. Using the calculated volume signals the type of respiration is determined in real-time by computing an energy coefficient. Changing breathing patterns can be visualized using a 2-D histogram, which is also used to classify and detect abnormal breathing phases. We evaluated the proposed method on five persons and obtained a reliable differentation of chest- and abdominal breathing in all test cases. Furthermore, we could show that the introduced 2-D histogram enables an accurate determination of changing breathing patterns.
📖 Papers frequently viewed together
4 Authors (Jakob Wasza, ..., Joachim Hornegger)
3 Citations
5 Citations
4 Authors (A. Hostettler, ..., Y. Rémond)
7 Citations
#1Christian SchallerH-Index: 8
#2Andre AdeltH-Index: 1
Last. Joachim HorneggerH-Index: 65
view all 4 authors...
In this paper we present a system that uses Time-of-Flight (ToF) technology to correct the position of a patient in respect to a previously acquired reference surface. A ToF sensor enables the acquisition of a 3-D surface model containing more than 25,000 points using a single sensor in real time. One advantage of this technology is that the high lateral resolution makes it possible to accurately compute translation and rotation of the patient in respect to a reference surface. We are using an I...
17 CitationsSource
#1Christian SchallerH-Index: 8
#2Jochen PenneH-Index: 11
Last. Joachim HorneggerH-Index: 65
view all 3 authors...
In this technical note we present a system that uses time-of-flight ToF technology to acquire a real-time multidimensional respiratory signal from a 3D surface reconstruction of the patient’s chest and abdomen without the use of markers. Using ToF sensors it is feasible to acquire a 3D model in real time with a single sensor. An advantage of ToF sensors is that their high lateral resolution makes it possible to define multiple regions of interest to compute an anatomy-adaptive multidimensional r...
54 CitationsSource
Dec 26, 2007 in ICCV (International Conference on Computer Vision)
#1Ali Khamene (Princeton University)
#2Christian Schaller (FAU: University of Erlangen-Nuremberg)H-Index: 8
Last. John E. Bayouth (UI: University of Iowa)H-Index: 27
view all 9 authors...
Precise localization of moving targets is essential to increase local control of the cancer via dose escalation while reducing the severity of normal tissue complication. Localization of targets in real time with radio-opaque marker is less favorable considering the excess radiation dose to the patient and potential complications of implantation. Various external surrogates could provide indications of the targets' positions during the breathing process. However, there is a great deal of uncerta...
9 CitationsSource
#1Yvette SeppenwooldeH-Index: 19
#2Ross Berbeco (Brigham and Women's Hospital)H-Index: 41
Last. Ben J.M. HeijmenH-Index: 64
view all 5 authors...
The Synchrony™ Respiratory Tracking System (RTS) is a treatment option of the CyberKnife robotic treatment device to irradiate extra-cranial tumors that move due to respiration. Advantages of RTS are that patients can breath normally and that there is no loss of linac duty cycle such as with gated therapy. Tracking is based on a measured correspondence model (linear or polynomial) between internal tumor motion and external (chest/abdominal) marker motion. The radiation beam follows the tumor mov...
221 CitationsSource
#1S TarteH-Index: 9
#2Jamie R. McClellandH-Index: 25
Last. David J. HawkesH-Index: 81
view all 6 authors...
12 Citations
#1Hidenori Ue (Chiba University)H-Index: 3
#2Hideaki HaneishiH-Index: 24
Last. Kazuyoshi SugaH-Index: 27
view all 4 authors...
We propose a method for correcting the motion of the lungs between different phase images obtained by respiratory-gated single photon emission computed tomography (SPECT). This method is applied to SPECT images that show a preserved activity distribution in the lungs such as 99m-Tc macro aggregated albumin (99m-Tc-MAA) perfusion images and 99m-Tc-Technegas ventilation images. In the proposed method, an objective function, which consists of both the degree of similarity between a reference image ...
39 CitationsSource
#1X. Allen Li (MCW: Medical College of Wisconsin)H-Index: 56
#2C. Stepaniak (MCW: Medical College of Wisconsin)H-Index: 2
Last. Elizabeth Gore (MCW: Medical College of Wisconsin)H-Index: 33
view all 3 authors...
This work introduces a gating technique that uses 4DCT to determine gating parameters and to plan gated treatment, and employs a Siemens linear accelerator to deliver the gated treatment. Because of technology incompatibility, the 4DCT scanner (LightSpeed, GE) and the Siemens accelerator require two different motion-monitoring systems. The motion monitoring system (AZ-773V, Anzai Med.) used for the gated delivery utilizes a pressuresensor to detect the external respiratory motion (pressure chang...
156 CitationsSource
#1Christian Plathow (DKFZ: German Cancer Research Center)H-Index: 32
#2Sebastian Ley (DKFZ: German Cancer Research Center)H-Index: 49
Last. H.U. Kauczor (DKFZ: German Cancer Research Center)H-Index: 1
view all 8 authors...
Abstract Purpose To assess diaphragm, lung region, and tumor mobility during the whole breathing cycle using dynamic MRI. A generalized safety margin concept for radiotherapy planning was calculated and compared with an individualized concept. Methods and materials The breathing cycles of 20 patients with solitary lung tumors (15 Stage I non–small-cell lung carcinoma, 5 small solitary metastases) were examined with dynamic MRI (true Fast imaging with steady precision, three images per second). T...
156 CitationsSource
#1James D. FoleyH-Index: 32
1. Introduction. Image Processing as Picture Analysis. The Advantages of Interactive Graphics. Representative Uses of Computer Graphics. Classification of Applications. Development of Hardware and Software for Computer Graphics. Conceptual Framework for Interactive Graphics. 2. Programming in the Simple Raster Graphics Package (SRGP)/. Drawing with SRGP/. Basic Interaction Handling/. Raster Graphics Features/. Limitations of SRGP/. 3. Basic Raster Graphics Algorithms for Drawing 2d Primitives. O...
5,283 Citations
Cited By2
#1Jakob WaszaH-Index: 9
#2Sebastian BauerH-Index: 29
Last. Joachim Hornegger (FAU: University of Erlangen-Nuremberg)H-Index: 65
view all 4 authors...
Detection, analysis and compensation of respiratory motion is a key issue for a variety of medical applications, such as tumor tracking in fractionated radiotherapy. One class of approaches aims for predicting the internal target movement by correlating intra-operatively captured body surface deformations to a pre-operatively learned deformable model. Here, range imaging (RI) devices assume a prominent role for dense and real-time surface acquisition due to their non-intrusive and markerless nat...
3 CitationsSource
#1Christian UlrichH-Index: 1
#2Christian Schaller (FAU: University of Erlangen-Nuremberg)H-Index: 8
Last. Joachim HorneggerH-Index: 65
view all 4 authors...
In this paper a novel anatomic-like phantom, to simulate human respiratory motion is presented. The phantom is capable to simulate thorax and abdomen motion for surface based respiratory gating systems. This phantom is used to evaluate a system based on time-of-flight (TOF) technology, to detect respiratory motion. It could be shown that the correlation between the reference motion, performed by the phantom and the measured data of the TOF system is 0.65 for a breathing amplitude of 1.5mm and ab...
3 Citations