Methods Inf Med - ML segmentation strategies for object interference compensation in FDG-PET lesion quantification.

Tópicos

{ imag(2675) segment(2577) method(1081) }
{ sequenc(1873) structur(1644) protein(1328) }
{ motion(1329) object(1292) video(1091) }
{ model(2656) set(1616) predict(1553) }
{ implement(1333) system(1263) develop(1122) }
{ problem(2511) optim(1539) algorithm(950) }
{ process(1125) use(805) approach(778) }
{ model(3404) distribut(989) bayesian(671) }
{ network(2748) neural(1063) input(814) }
{ surgeri(1148) surgic(1085) robot(1054) }
{ first(2504) two(1366) second(1323) }
{ studi(1410) differ(1259) use(1210) }
{ model(2341) predict(2261) use(1141) }
{ state(1844) use(1261) util(961) }
{ sampl(1606) size(1419) use(1276) }
{ activ(1138) subject(705) human(624) }
{ method(1219) similar(1157) match(930) }
{ concept(1167) ontolog(924) domain(897) }
{ algorithm(1844) comput(1787) effici(935) }
{ model(2220) cell(1177) simul(1124) }
{ method(984) reconstruct(947) comput(926) }
{ data(3963) clinic(1234) research(1004) }
{ import(1318) role(1303) understand(862) }
{ studi(1119) effect(1106) posit(819) }
{ patient(2837) hospit(1953) medic(668) }
{ medic(1828) order(1363) alert(1069) }
{ can(981) present(881) function(850) }
{ detect(2391) sensit(1101) algorithm(908) }
{ data(1737) use(1416) pattern(1282) }
{ assess(1506) score(1403) qualiti(1306) }
{ error(1145) method(1030) estim(1020) }
{ general(901) number(790) one(736) }
{ perform(999) metric(946) measur(919) }
{ visual(1396) interact(850) tool(830) }
{ compound(1573) activ(1297) structur(1058) }
{ blood(1257) pressur(1144) flow(957) }
{ cost(1906) reduc(1198) effect(832) }
{ high(1669) rate(1365) level(1280) }
{ use(976) code(926) identifi(902) }
{ use(1733) differ(960) four(931) }
{ drug(1928) target(777) effect(648) }
{ method(1969) cluster(1462) data(1082) }
{ can(774) often(719) complex(702) }
{ imag(1947) propos(1133) code(1026) }
{ inform(2794) health(2639) internet(1427) }
{ system(1976) rule(880) can(841) }
{ measur(2081) correl(1212) valu(896) }
{ imag(1057) registr(996) error(939) }
{ bind(1733) structur(1185) ligand(1036) }
{ featur(3375) classif(2383) classifi(1994) }
{ imag(2830) propos(1344) filter(1198) }
{ patient(2315) diseas(1263) diabet(1191) }
{ take(945) account(800) differ(722) }
{ studi(2440) review(1878) systemat(933) }
{ treatment(1704) effect(941) patient(846) }
{ framework(1458) process(801) describ(734) }
{ chang(1828) time(1643) increas(1301) }
{ learn(2355) train(1041) set(1003) }
{ clinic(1479) use(1117) guidelin(835) }
{ extract(1171) text(1153) clinic(932) }
{ method(1557) propos(1049) approach(1037) }
{ data(1714) softwar(1251) tool(1186) }
{ design(1359) user(1324) use(1319) }
{ control(1307) perform(991) simul(935) }
{ care(1570) inform(1187) nurs(1089) }
{ search(2224) databas(1162) retriev(909) }
{ featur(1941) imag(1645) propos(1176) }
{ case(1353) use(1143) diagnosi(1136) }
{ howev(809) still(633) remain(590) }
{ risk(3053) factor(974) diseas(938) }
{ research(1085) discuss(1038) issu(1018) }
{ system(1050) medic(1026) inform(1018) }
{ perform(1367) use(1326) method(1137) }
{ spatial(1525) area(1432) region(1030) }
{ record(1888) medic(1808) patient(1693) }
{ health(3367) inform(1360) care(1135) }
{ model(3480) simul(1196) paramet(876) }
{ monitor(1329) mobil(1314) devic(1160) }
{ ehr(2073) health(1662) electron(1139) }
{ research(1218) medic(880) student(794) }
{ data(2317) use(1299) case(1017) }
{ age(1611) year(1155) adult(843) }
{ signal(2180) analysi(812) frequenc(800) }
{ group(2977) signific(1463) compar(1072) }
{ gene(2352) biolog(1181) express(1162) }
{ data(3008) multipl(1320) sourc(1022) }
{ intervent(3218) particip(2042) group(1664) }
{ time(1939) patient(1703) rate(768) }
{ patient(1821) servic(1111) care(1106) }
{ use(2086) technolog(871) perceiv(783) }
{ analysi(2126) use(1163) compon(1037) }
{ health(1844) social(1437) communiti(874) }
{ structur(1116) can(940) graph(676) }
{ cancer(2502) breast(956) screen(824) }
{ result(1111) use(1088) new(759) }
{ survey(1388) particip(1329) question(1065) }
{ estim(2440) model(1874) function(577) }
{ decis(3086) make(1611) patient(1517) }
{ activ(1452) weight(1219) physic(1104) }
{ method(2212) result(1239) propos(1039) }

Resumo

CKGROUND: Quantification of lesion activity by FDG uptake in oncological PET is severely limited by partial volume effects. A maximum likelihood (ML) expectation maximization (EM) algorithm considering regional basis functions (AWOSEM-region) had been previously developed. Regional basis functions are iteratively segmented and quantified, thus identifying the volume and the activity of the lesion.OBJECTIVES: Improvement of AWOSEM-region when analyzing proximal interfering hot objects is addressed by proper segmentation initialization steps and models of spill-out and partial volume effects. Conditions relevant to lung PET-CT studies are considered: 1) lesion close to hot organ (e.g. chest wall, heart and mediastinum), 2) two close lesions.METHODS: CT image was considered for pre-segmenting hot anatomical structures, never for lesion identification, solely defined by iterations on PET data. Further resolution recovery beyond the smooth standard clinical image was necessary to start lesion segmentation. A watershed algorithm was used to separate two close lesions. A subtraction of the spill-out from a nearby hot organ was introduced to enhance a lesion for the initial segmentation and start the further quantification steps. Biograph scanner blurring was modeled from phantom data in order to implement the procedure for 3D clinical lung studies.RESULTS: In simulations, the procedure was able to separate structures as close as one pixel-size (2.25 mm). Robustness against the input segmentation errors defining the addressed objects was tested showing that convergence was not sensitive to initial volume overestimates up to 130%. Poor robustness was found against underestimates. A clinical study of a small lung lesion close to chest wall displayed a good recovery of both lesion activity and volume.CONCLUSIONS: With proper initialization and models of spill-out from hot organs, AWOSEM-region can be successfully applied to lung oncological studies.

Resumo Limpo

ckground quantif lesion activ fdg uptak oncolog pet sever limit partial volum effect maximum likelihood ml expect maxim em algorithm consid region basi function awosemregion previous develop region basi function iter segment quantifi thus identifi volum activ lesionobject improv awosemregion analyz proxim interf hot object address proper segment initi step model spillout partial volum effect condit relev lung petct studi consid lesion close hot organ eg chest wall heart mediastinum two close lesionsmethod ct imag consid preseg hot anatom structur never lesion identif sole defin iter pet data resolut recoveri beyond smooth standard clinic imag necessari start lesion segment watersh algorithm use separ two close lesion subtract spillout nearbi hot organ introduc enhanc lesion initi segment start quantif step biograph scanner blur model phantom data order implement procedur d clinic lung studiesresult simul procedur abl separ structur close one pixels mm robust input segment error defin address object test show converg sensit initi volum overestim poor robust found underestim clinic studi small lung lesion close chest wall display good recoveri lesion activ volumeconclus proper initi model spillout hot organ awosemregion can success appli lung oncolog studi

Resumos Similares

IEEE Trans Image Process - Spatio-temporal video segmentation with shape growth or shrinkage constraint. ( 0,835710822106375 )
Comput Methods Programs Biomed - A novel method for pulmonary embolism detection in CTA images. ( 0,833471217545112 )
Int J Comput Assist Radiol Surg - Automatic left ventricle segmentation in volumetric SPECT data set by variational level set. ( 0,82959685665893 )
Med Biol Eng Comput - A fully automated human knee 3D MRI bone segmentation using the ray casting technique. ( 0,82402260834853 )
Comput. Biol. Med. - Retinal vessel segmentation using a multi-scale medialness function. ( 0,816657833417172 )
Int J Comput Assist Radiol Surg - GPU accelerated segmentation and centerline extraction of tubular structures from medical images. ( 0,813660082611456 )
IEEE Trans Image Process - Overlapping cell nuclei segmentation using a spatially adaptive active physical model. ( 0,812072044226621 )
Int J Comput Assist Radiol Surg - 3D variational brain tumor segmentation using Dirichlet priors on a clustered feature set. ( 0,811594357694822 )
Comput. Biol. Med. - 3D geometric split-merge segmentation of brain MRI datasets. ( 0,809136701495528 )
Comput Methods Programs Biomed - Segmentation of pituitary adenoma: a graph-based method vs. a balloon inflation method. ( 0,807635457364391 )
Int J Comput Assist Radiol Surg - Automatic 3D segmentation of individual facial muscles using unlabeled prior information. ( 0,807217941245189 )
Comput. Biol. Med. - Refinement of lung nodule candidates based on local geometric shape analysis and Laplacian of Gaussian kernels. ( 0,804954350538551 )
Int J Comput Assist Radiol Surg - Fetal brain volumetry through MRI volumetric reconstruction and segmentation. ( 0,804314964851508 )
IEEE J Biomed Health Inform - A spatiotemporal-based scheme for efficient registration-based segmentation of thoracic 4-D MRI. ( 0,799996980762839 )
Comput. Biol. Med. - Phase-based probabilistic active contour for nerve detection in ultrasound images for regional anesthesia. ( 0,796833442714958 )
IEEE Trans Image Process - Incorporating anatomical side information into PET reconstruction using nonlocal regularization. ( 0,796209259288559 )
J Med Syst - Automated bleeding detection in capsule endoscopy videos using statistical features and region growing. ( 0,795328562348751 )
Comput. Biol. Med. - Gallbladder shape extraction from ultrasound images using active contour models. ( 0,795269790225383 )
Comput Math Methods Med - A hybrid method for pancreas extraction from CT image based on level set methods. ( 0,791734692285453 )
Int J Comput Assist Radiol Surg - Computer-aided nidus segmentation and angiographic characterization of arteriovenous malformations. ( 0,791408626727758 )
Comput. Biol. Med. - Nearly automated motion artifacts correction between multi breath-hold short-axis and long-axis cine CMR images. ( 0,791232847699343 )
Comput Math Methods Med - A hybrid approach of using symmetry technique for brain tumor segmentation. ( 0,789465319748728 )
Comput Methods Programs Biomed - A survey of prostate segmentation methodologies in ultrasound, magnetic resonance and computed tomography images. ( 0,788418729246576 )
Comput. Biol. Med. - A level-set based approach for anterior teeth segmentation in cone beam computed tomography images. ( 0,788293929590415 )
Med Biol Eng Comput - Automatic segmentation of the fetal cerebellum on ultrasound volumes, using a 3D statistical shape model. ( 0,786589966823694 )
Comput Math Methods Med - Segmentation of brain MRI using SOM-FCM-based method and 3D statistical descriptors. ( 0,783359714458672 )
Comput. Biol. Med. - Automatic brain extraction methods for T1 magnetic resonance images using region labeling and morphological operations. ( 0,783127611806448 )
Comput. Biol. Med. - Lung nodule segmentation and recognition using SVM classifier and active contour modeling: a complete intelligent system. ( 0,781984630519829 )
Int J Comput Assist Radiol Surg - Automatic segmentation of the nasal cavity and paranasal sinuses from cone-beam CT images. ( 0,781696325326995 )
Med Biol Eng Comput - Automatic segmentation of brain MR images using an adaptive balloon snake model with fuzzy classification. ( 0,780695723770673 )
Int J Neural Syst - Self-supervised MRI tissue segmentation by discriminative clustering. ( 0,779236282508039 )
Med Biol Eng Comput - Multiplane spectroscopic whole-body photoacoustic imaging of small animals in vivo. ( 0,778021728658832 )
Int J Comput Assist Radiol Surg - Segmentation of iodine brachytherapy implants in fluoroscopy. ( 0,777556884859636 )
IEEE J Biomed Health Inform - Segmentation of the blood vessels and optic disk in retinal images. ( 0,77654574400996 )
Comput. Biol. Med. - Accurate tumor localization and tracking in radiation therapy using wireless body sensor networks. ( 0,775937671799212 )
Comput Methods Programs Biomed - Geometrical methods for level set based abdominal aortic aneurysm thrombus and outer wall 2D image segmentation. ( 0,775465539635626 )
Comput. Biol. Med. - Fully automated liver segmentation from SPIR image series. ( 0,775036680085175 )
Int J Comput Assist Radiol Surg - Vertebra identification using template matching modelmp and K-means clustering. ( 0,774367303947039 )
Int J Comput Assist Radiol Surg - Liver segmentation for contrast-enhanced MR images using partitioned probabilistic model. ( 0,772553382422595 )
Int J Comput Assist Radiol Surg - Brain tumor detection and segmentation in a CRF (conditional random fields) framework with pixel-pairwise affinity and superpixel-level features. ( 0,771523501225344 )
Comput Math Methods Med - Multimodal brain-tumor segmentation based on Dirichlet process mixture model with anisotropic diffusion and Markov random field prior. ( 0,770470654473515 )
IEEE Trans Image Process - Automatic segmentation of the left atrium from MR images via variational region growing with a moments-based shape prior. ( 0,770406978046253 )
Comput Methods Programs Biomed - MARGA: multispectral adaptive region growing algorithm for brain extraction on axial MRI. ( 0,770149977103489 )
Comput Methods Programs Biomed - pSnakes: a new radial active contour model and its application in the segmentation of the left ventricle from echocardiographic images. ( 0,76994299794877 )
Comput. Biol. Med. - Reducing redundancy in wireless capsule endoscopy videos. ( 0,767853804724453 )
Int J Comput Assist Radiol Surg - Automated liver lesion detection in CT images based on multi-level geometric features. ( 0,767384584655598 )
Int J Comput Assist Radiol Surg - Carotid vasculature modeling from patient CT angiography studies for interventional procedures simulation. ( 0,767170925948954 )
Med Biol Eng Comput - Automatic segmentation of carotid B-mode images using fuzzy classification. ( 0,766637874826817 )
Int J Comput Assist Radiol Surg - Extreme leg motion analysis of professional ballet dancers via MRI segmentation of multiple leg postures. ( 0,763497191591913 )
Int J Comput Assist Radiol Surg - Acetabular cartilage segmentation in CT arthrography based on a bone-normalized probabilistic atlas. ( 0,762039338812173 )
Int J Comput Assist Radiol Surg - Local/non-local regularized image segmentation using graph-cuts: application to dynamic and multispectral MRI. ( 0,761622579446586 )
Int J Comput Assist Radiol Surg - Left ventricular myocardium segmentation on delayed phase of multi-detector row computed tomography. ( 0,760320014944602 )
Comput. Biol. Med. - Numerical investigation of ultrasonic attenuation through 2D trabecular bone structures reconstructed from CT scans and random realizations. ( 0,75980782540169 )
Int J Comput Assist Radiol Surg - Automatic lung segmentation method for MRI-based lung perfusion studies of patients with chronic obstructive pulmonary disease. ( 0,759224991676709 )
Comput Methods Programs Biomed - Automatic selection of arterial input function on dynamic contrast-enhanced MR images. ( 0,755477383605649 )
Comput. Biol. Med. - A review on segmentation of positron emission tomography images. ( 0,753878960965483 )
Comput Math Methods Med - Diabetic retinopathy grading by digital curvelet transform. ( 0,753332986945948 )
Comput Methods Programs Biomed - Image registration and atlas-based segmentation of cardiac outflow velocity profiles. ( 0,753281389133296 )
IEEE Trans Image Process - Shape sparse representation for joint object classification and segmentation. ( 0,75295205418141 )
BMC Med Inform Decis Mak - Automatic segmentation of meningioma from non-contrasted brain MRI integrating fuzzy clustering and region growing. ( 0,749164440186398 )
IEEE J Biomed Health Inform - Segmentation of tumor and edema along with healthy tissues of brain using wavelets and neural networks. ( 0,748926908787649 )
IEEE Trans Image Process - 3D superalloy grain segmentation using a multichannel edge-weighted centroidal Voronoi tessellation algorithm. ( 0,748911090060668 )
IEEE Trans Pattern Anal Mach Intell - Paired Regions for Shadow Detection and Removal. ( 0,748890609673839 )
Int J Comput Assist Radiol Surg - Nasopharyngeal carcinoma segmentation using a region growing technique. ( 0,748023616422484 )
Int J Comput Assist Radiol Surg - Automated aorta segmentation in low-dose chest CT images. ( 0,747635305070494 )
Int J Comput Assist Radiol Surg - A cost-sensitive extension of AdaBoost with markov random field priors for automated segmentation of breast tumors in ultrasonic images. ( 0,745915433693739 )
Comput Methods Programs Biomed - A review of atlas-based segmentation for magnetic resonance brain images. ( 0,745563236632738 )
Int J Comput Assist Radiol Surg - Voxel classification and graph cuts for automated segmentation of pathological periprosthetic hip anatomy. ( 0,744274858220548 )
Int J Comput Assist Radiol Surg - Automated segmentation of blood-flow regions in large thoracic arteries using 3D-cine PC-MRI measurements. ( 0,744114880153531 )
Comput Math Methods Med - A nonparametric shape prior constrained active contour model for segmentation of coronaries in CTA images. ( 0,741616446607307 )
IEEE Trans Image Process - A novel rotationally invariant region-based hidden Markov model for efficient 3-D image segmentation. ( 0,741371931285843 )
IEEE J Biomed Health Inform - Accurate segmentation of partially overlapping cervical cells based on dynamic sparse contour searching and GVF snake model. ( 0,741173048944768 )
Comput. Biol. Med. - Estimating contrast agent motion from ultrasound images using an anisotropic diffusion-based optical flow technique. ( 0,737821521329752 )
Comput Math Methods Med - Esophagus segmentation from 3D CT data using skeleton prior-based graph cut. ( 0,737647288034777 )
Comput. Biol. Med. - Optic disc segmentation using the sliding band filter. ( 0,734670959261488 )
J Clin Monit Comput - A comparison of two algorithms for automated stone detection in clinical B-mode ultrasound images of the abdomen. ( 0,734578716565574 )
Int J Comput Assist Radiol Surg - Ameliorating slice gaps in multislice magnetic resonance images: an interpolation scheme. ( 0,734014538396224 )
Med Biol Eng Comput - Automatic detection and segmentation of bovine corpora lutea in ultrasonographic ovarian images using genetic programming and rotation invariant local binary patterns. ( 0,73249764612453 )
Int J Comput Assist Radiol Surg - A geodesic deformable model for automatic segmentation of image sequences applied to radiation therapy. ( 0,73209318632528 )
IEEE Trans Image Process - Automatic bootstrapping and tracking of object contours. ( 0,730509790351506 )
Int J Comput Assist Radiol Surg - Statistical model-based segmentation of the proximal femur in digital antero-posterior (AP) pelvic radiographs. ( 0,730040730176577 )
Med Biol Eng Comput - A review of ultrasound common carotid artery image and video segmentation techniques. ( 0,729915765382873 )
Int J Comput Assist Radiol Surg - Automated segmentation of basal ganglia and deep brain structures in MRI of Parkinson's disease. ( 0,729443200715689 )
Int J Comput Assist Radiol Surg - 3D ultrasound centerline tracking of abdominal vessels for?endovascular navigation. ( 0,729251324505237 )
J Med Syst - Brain MR image segmentation with spatial constrained K-mean algorithm and dual-tree complex wavelet transform. ( 0,728749791925596 )
IEEE J Biomed Health Inform - On the use of coupled shape priors for segmentation of magnetic resonance images of the knee. ( 0,728216335193777 )
Comput Methods Programs Biomed - Enhancing classification accuracy utilizing globules and dots features in digital dermoscopy. ( 0,727374062756992 )
IEEE Trans Image Process - Image registration under illumination variations using region-based confidence weighted M-estimators. ( 0,72719558551336 )
Comput Methods Programs Biomed - Segmentation of ultrasound images of the carotid using RANSAC and cubic splines. ( 0,727089223585395 )
Med Biol Eng Comput - Detection of the intima and media layer thickness of ultrasound common carotid artery image using efficient active contour segmentation technique. ( 0,726939797143683 )
Comput Math Methods Med - Detection of pulmonary nodules in CT images based on fuzzy integrated active contour model and hybrid parametric mixture model. ( 0,724285509418409 )
IEEE J Biomed Health Inform - A comparison of US- versus MR-based 3-D Prostate Shapes Using Radial Basis Function Interpolation and Statistical Shape Models. ( 0,72412725717239 )
Comput Methods Programs Biomed - An improved method of automatic colon segmentation for virtual colon unfolding. ( 0,723887438772786 )
Comput. Aided Surg. - A hybrid method based on level set and 3D region growing for segmentation of the thoracic aorta. ( 0,723865063043147 )
Comput Math Methods Med - Automatic mapping extraction from multiecho T2-star weighted magnetic resonance images for improving morphological evaluations in human brain. ( 0,723676222304832 )
Int J Comput Assist Radiol Surg - Spatially adaptive active contours: a semi-automatic tumor segmentation framework. ( 0,722495058884411 )
Methods Inf Med - A fast, automatic segmentation algorithm for locating and delineating touching cell boundaries in imaged histopathology. ( 0,722063125789625 )
Comput Methods Programs Biomed - A fast seed detection using local geometrical feature for automatic tracking of coronary arteries in CTA. ( 0,72200335537626 )
Int J Comput Assist Radiol Surg - Real-time aortic valve segmentation from transesophageal echocardiography sequence. ( 0,721402990521259 )
Int J Comput Assist Radiol Surg - Expert-driven label fusion in multi-atlas-based segmentation of the prostate using weighted atlases. ( 0,721372758998901 )