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Heart chambers and whole heart segmentation techniques: review

Dongwoo Kang
2012 Journal of Electronic Imaging (JEI)  
In addition, we describe important clinical applications, imaging modalities, and validation methods used for cardiac segmentation.  ...  Computer-aided segmentation of cardiac images obtained by various modalities plays an important role and is a prerequisite for a wide range of cardiac applications by facilitating the delineation of anatomical  ...  In other developments, the level-set technique was employed for the segmentation of cardiac gated SPECT images 124 and a geometric active contour-based SPECT segmentation technique was proposed. 125  ... 
doi:10.1117/1.jei.21.1.010901 fatcat:44rwjcigqbdqzdfj7hiog4mddq

A New Method for SPECT Quantification of Targeted Radiotracers Uptake in the Myocardium [chapter]

Shimin Li, Lawrence W. Dobrucki, Albert J. Sinusas, Yi-Hwa Liu
2005 Lecture Notes in Computer Science  
A 3-D Gaussian fitting method was applied for quantification of the external point source.  ...  We developed a new method for absolute quantification of targeted radiotracers uptake in the myocardium using hybrid SPECT/CT and an external reference point source.  ...  A hybrid microSPECT/CT imaging system was used for imaging. The methods were evaluated using an in vivo rat model and a radiotracer targeted at angiogenesis.  ... 
doi:10.1007/11566489_84 fatcat:thywd3u6qfarpmdptcxds3l67a

Novel SPECT Technologies and Approaches in Cardiac Imaging

Piotr Slomka, Guang-Uei Hung, Guido Germano, Daniel S. Berman
2016 Cardiovascular Innovations and Applications  
We also discuss several novel software approaches for the quantification and interpretation of myocardial perfusion SPECT scans.  ...  Hybrid protocols using CT angiography have been proposed. Image quality improvements have been demonstrated by novel reconstructions and motion correction.  ...  We thank Joanna Liang for proofreading the paper.  ... 
doi:10.15212/cvia.2016.0052 pmid:29034066 pmcid:PMC5640436 fatcat:liabkyphfnfifenn2ntdratis4

Ability of artificial intelligence to diagnose coronary artery stenosis using hybrid images of coronary computed tomography angiography and myocardial perfusion SPECT

Hiroto Yoneyama, Kenichi Nakajima, Junichi Taki, Hiroshi Wakabayashi, Shinro Matsuo, Takahiro Konishi, Koichi Okuda, Takayuki Shibutani, Masahisa Onoguchi, Seigo Kinuya
2019 European Journal of Hybrid Imaging  
Hybrid images of CCTA and myocardial perfusion SPECT are useful for detecting culprit coronary arteries. Diagnoses using artificial intelligence are comparable to that by nuclear medicine physicians.  ...  Two nuclear medicine physicians interpreted the myocardial perfusion SPECT and hybrid images with four grades of confidence, then drew regions on polar maps to identify culprit coronary arteries.  ...  Koshino, and all radiology technologists at Kanazawa University Hospital for creating hybrid images and providing technical support.  ... 
doi:10.1186/s41824-019-0052-8 pmid:34191159 fatcat:ffbw4msl3bcrlb57sbxogfekqy

Deep learning-based attenuation correction in the image domain for myocardial perfusion SPECT imaging [article]

Samaneh Mostafapour, Faeze Gholamiankhah, Sirvan Maroofpour, Mahdi Momennezhad, Mohsen Asadinezhad, Seyed Rasoul Zakavi, Hossein Arabi
2021 arXiv   pre-print
Objective: In this work, we set out to investigate the accuracy of direct attenuation correction (AC) in the image domain for the myocardial perfusion SPECT imaging (MPI-SPECT) using two residual (ResNet  ...  Similarly, the clinical evaluation revealed a mean TPD of 12.78±9.22 and 12.57±8.93 for the ResNet and UNet models, respectively, compared to 12.84±8.63 obtained from the reference SPECT CT-AC images.  ...  The Chang method, used in SPECT-alone systems, assumes a uniform attenuation coefficient for the entire area within the body contour [36] [37] [38] .  ... 
arXiv:2102.04915v2 fatcat:niiqre3vlvby7ofgnupvshftwa

Quantitative Analysis of Myocardial Perfusion SPECT Anatomically Guided by Coregistered 64-Slice Coronary CT Angiography

P. J. Slomka, V. Y. Cheng, D. Dey, J. Woo, A. Ramesh, S. Van Kriekinge, Y. Suzuki, Y. Elad, R. Karlsberg, D. S. Berman, G. Germano
2009 Journal of Nuclear Medicine  
At the same time, myocardial perfusion SPECT (MPS) continues to be a mainstream imaging modality for the detection and estimation of the severity of ischemia caused by coronary lesions.  ...  MPS vascular region definition was adjusted in 17 studies, and LV contours were adjusted in 11 studies using coregistered CTA images as a guide.  ...  ACKNOWLEDGMENTS Cedars-Sinai Medical Center receives or may receive royalties for the licensure of software, including software for quantitative assessment of myocardial perfusion and for MPS CT fusion  ... 
doi:10.2967/jnumed.109.063982 pmid:19759104 pmcid:PMC3530406 fatcat:b3ke4rdgmjahzpkxybybjhy6ze

Cardiac hybrid imaging

O. Gaemperli, F. M. Bengel, P. A. Kaufmann
2011 European Heart Journal  
in a single setting.  ...  Computed tomography coronary angiography (CTCA) and myocardial perfusion imaging techniques (single photon emission computed tomography, SPECT, or positron emission tomography, PET) are established non-invasive  ...  Myocardial perfusion imaging In the last three decades, myocardial perfusion SPECT has established itself as an excellent non-invasive method for the diagnosis of CAD with flow-limiting lesions with a  ... 
doi:10.1093/eurheartj/ehr057 pmid:21406437 fatcat:vg2dorjpifdcdmwjn6gjcxkjwm

Subject index

1999 IEEE Transactions on Medical Imaging  
/detect. without user-defined contours. Denney, T.S., Jr., T-MI Apr 99 330-344 myocardial deforms., spatio-temporal tracking, tagged MRI, 4-D B-spline model.  ...  images. Yudong Zhu, + , T-MI Jul 99 557-569 MRI, myocardial tags estim./detect. without user-defined contours.  ...  MR images, reversible compression method. Midtvik, M., + , 795-800 MRI, myocardial tags estim./detect. without user-defined contours. Denney, T.S., Jr., T-MI Apr 99 330-344 MRI simul.  ... 
doi:10.1109/tmi.1999.819331 fatcat:g7ntb6icpzgs7jwncaguherqne

EANM procedural guidelines for myocardial perfusion scintigraphy using cardiac-centered gamma cameras

Fabien Hyafil, on behalf of the Cardiovascular Committee of the European Association of Nuclear Medicine (EANM), Alessia Gimelli, Riemer H. J. A. Slart, Panagiotis Georgoulias, Christoph Rischpler, Mark Lubberink, Roberto Sciagra, Jan Bucerius, Denis Agostini, Hein J. Verberne
2019 European Journal of Hybrid Imaging  
The increased myocardial count sensitivity of these three cardiac-centered systems has allowed for a decrease in the activities of radiopharmaceuticals injected to patients for myocardial perfusion imaging  ...  Three cardiac-centered gamma cameras are currently the most frequently used in Europe: the D-SPECT (Spectrum Dynamics), the Alcyone (Discovery NM 530c and Discovery NM/CT 570c; General Electric Medical  ...  The selection of the total number of myocardial counts for SPECT acquisition on the D-SPECT camera results from a compromise between injected activities, mean duration of SPECT acquisitions, and image  ... 
doi:10.1186/s41824-019-0058-2 pmid:34191169 fatcat:fqkjl5sbinbmxcur5szqwlaj54

Directions and Magnitudes of Misregistration of CT Attenuation-Corrected Myocardial Perfusion Studies: Incidence, Impact on Image Quality, and Guidance for Reregistration

J. A. Kennedy, O. Israel, A. Frenkel
2009 Journal of Nuclear Medicine  
CT-based attenuation-corrected (AC) myocardial perfusion imaging (MPI) studies may show significant artifacts caused by misregistration between SPECT and CT data.  ...  The present study aimed at identifying the directions and magnitudes of misregistration with greatest impact on AC myocardial perfusion image quality.  ...  Hybrid SPECT/CT scanners provide an efficient method of obtaining CT-based AC-MPI (2, 3) .  ... 
doi:10.2967/jnumed.109.062141 pmid:19690038 fatcat:xrff5ad4qnfzzofng7i5gktrsi

The role of PET quantification in cardiovascular imaging

Piotr Slomka, Daniel S. Berman, Erick Alexanderson, Guido Germano
2014 Clinical and translational imaging  
Myocardial perfusion imaging with PET allows accurate global and regional measurements of myocardial perfusion, myocardial blood flow and function at stress and rest in a single examination.  ...  The level of agreement between various software methods available for such analyses is excellent.  ...  Although automated relative quantification was initially developed for SPECT imaging, several recent studies report the use and performance of this method in PET/CT imaging.  ... 
doi:10.1007/s40336-014-0070-2 pmid:26247005 pmcid:PMC4523308 fatcat:ie7vpe4oljbnlcpqc77tobqvoy

Cardiac hybrid imaging

O. Gaemperli, A. Saraste, J. Knuuti
2011 European Heart Journal-Cardiovascular Imaging  
Cardiac hybrid imaging combines different imaging modalities in a way where both modalities equally contribute to image information.  ...  More recent applications are a combination of CTCA and cardiac magnetic resonance imaging by using software image fusion and utilization of commercially available hybrid PET/MRI scanners for cardiac applications  ...  A recent study implementing motion-frozen SPECT data and CTAguided SPECT contour and territory adjustments found that the improved diagnostic value of hybrid imaging was driven by higher accuracy in left  ... 
doi:10.1093/ejechocard/jer240 pmid:22094239 fatcat:fade5tncn5hlnbmvg3oweklhh4

The relationship between epicardial fat volume and myocardial perfusion scintigraphy findings

Süleyman ÖNCÜ, Seyit Ahmet ERTÜRK
2022 The European Research Journal  
MPS was performed in all patients with a one-day stress and rest imaging protocol.  ...  Methods: A total of 295 patients (182 F, 113 M) who underwent MPS in our unit with the suspicion of CAD in the last 1 year and who had a recent thorax CT examination were included.  ...  SPECT/CT gamma cameras are currently used for MPS imaging.  ... 
doi:10.18621/eurj.1084333 fatcat:fnh7t4v5xzdlzk3pc5bdftrhfa

Scintigraphic quantification of myocardial necrosis in patients after intravenous injection of myosin-specific antibody

B A Khaw, H K Gold, T Yasuda, R C Leinbach, M Kanke, J T Fallon, M Barlai-Kovach, H W Strauss, F Sheehan, E Haber
1986 Circulation  
Results by both techniques showed a significant correlation with computer-derived hypokinetic segment length (r = .79 for both, p = .002) and peak creatine kinase (r = .9 for both, p < .01).  ...  Antimyosin images recorded by planar and single photon-emission computed tomography (SPECT) delineated areas of myocardial necrosis in 27 of 30 patients (90%) compared with a 91% sensitivity of pyrophosphate  ...  The presence of a segment of the contour with function depressed below the 2 SD threshold has been previously shown to be correlated with myocardial fibrosis.1" However, this is not a direct measure of  ... 
doi:10.1161/01.cir.74.3.501 pmid:3017604 fatcat:xz32laz5brbchja53rlssmwdf4

Deep learning-guided attenuation correction in the image domain for myocardial perfusion SPECT imaging

Samaneh Mostafapour, Faeze Gholamiankhah, Sirwan Maroufpour, Mehdi Momennezhad, Mohsen Asadinezhad, Seyed Rasoul Zakavi, Hossein Arabi, Habib Zaidi
2022 Journal of Computational Design and Engineering  
We investigate the accuracy of direct attenuation correction (AC) in the image domain for myocardial perfusion SPECT (single-photon emission computed tomography) imaging (MPI-SPECT) using residual (ResNet  ...  Conversely, Chang's approach led to a mean TPD of 16.68 ± 11.24%. The deep learning AC methods have the potential to achieve reliable AC in MPI-SPECT imaging.  ...  methods, and (d) joint correlation histogram analysis of SPECT non-AC versus reference SPECT CT-AC images.  ... 
doi:10.1093/jcde/qwac008 fatcat:7s4pc3n24fenjctrrqre27a44u
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