Comput. Biol. Med. - Fully automated computer-aided volume estimation system for thyroid planar scintigraphy.

Tópicos

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

Resumo

Patient-specific dosimetry calculations are often performed for radioiodine therapy in patients with Graves' hyperthyroidism. The radioiodine doses are typically calculated to deliver the desired amount of radiation based on gland size and radioactive iodine uptake. Thus the estimation of thyroid gland volume is of great importance for radioiodine therapy. In clinical practice, thyroid volume determinations are usually performed with ultrasonography (US) or with planar scintigraphy (PS). In traditional planar scintigraphic studies, the thyroid boundary is estimated using a fixed threshold value if the shape of the thyroid is well-defined or a manually drawn region of interest (ROI) if the thyroid shape is irregular. The thyroid volume is then calculated based on the area thus determined. Delineating the thyroid area on a planar scintigram is not easy when applying a fixed threshold value. Moreover, hand-drawn ROIs are time consuming, tedious, and highly operator-dependent. In this study, for a PS image, a fully automated thyroid volume estimation system mainly consisting of four steps, i.e. preprocessing, image contrast enhancement, image segmentation, and automated ROI finding, was proposed to obtain the maximum height and area of each thyroid lobe, and thus calculate the thyroid volume using either Himanka-Larsson's formula or Allen-Goodwin's formula. A set of 40 Graves's disease patients regarded as training set were used to determine empirically some parameters operated in the system. A set of 30 Graves's disease patients being independent of the training set, regarded as test set for thyroid volume measurements were used for comparisons and performance analyses. In this study, the US was adopted as a standard reference. The statistical analyses were performed with bias, precision, and relative differences. The results of thyroid volume estimation from the proposed approach correlated well with those from US, and the statistical performance analyses showed good agreement between them. In comparison, our automated approach with Allen-Goodwin's formula had not only good correlation with US (R(2)=0.99) but also the best bias (0.8), precision (?2.32 ml), and low relative differences (2.2 ? 6.1%). It is expected that this automated computer-assisted approach can help physicians in the determination of patient-specific administered activities for treatment of thyroid disease.

Resumo Limpo

patientspecif dosimetri calcul often perform radioiodin therapi patient grave hyperthyroid radioiodin dose typic calcul deliv desir amount radiat base gland size radioact iodin uptak thus estim thyroid gland volum great import radioiodin therapi clinic practic thyroid volum determin usual perform ultrasonographi us planar scintigraphi ps tradit planar scintigraph studi thyroid boundari estim use fix threshold valu shape thyroid welldefin manual drawn region interest roi thyroid shape irregular thyroid volum calcul base area thus determin delin thyroid area planar scintigram easi appli fix threshold valu moreov handdrawn roi time consum tedious high operatordepend studi ps imag fulli autom thyroid volum estim system main consist four step ie preprocess imag contrast enhanc imag segment autom roi find propos obtain maximum height area thyroid lobe thus calcul thyroid volum use either himankalarsson formula allengoodwin formula set gravess diseas patient regard train set use determin empir paramet oper system set gravess diseas patient independ train set regard test set thyroid volum measur use comparison perform analys studi us adopt standard refer statist analys perform bias precis relat differ result thyroid volum estim propos approach correl well us statist perform analys show good agreement comparison autom approach allengoodwin formula good correl us r also best bias precis ml low relat differ expect autom computerassist approach can help physician determin patientspecif administ activ treatment thyroid diseas

Resumos Similares

Int J Comput Assist Radiol Surg - A two-stage rule-constrained seedless region growing approach for mandibular body segmentation in MRI. ( 0,786569597984697 )
Comput Methods Programs Biomed - Cerebral arterial inflow assessment with 18F-FDG PET: methodology and feasibility. ( 0,778616709743594 )
Med Biol Eng Comput - Predicting 3D pose in partially overlapped X-ray images of knee prostheses using model-based Roentgen stereophotogrammetric analysis (RSA). ( 0,774497254138248 )
Int J Comput Assist Radiol Surg - Wireless mobile technology to improve workflow and feasibility of MR-guided percutaneous interventions. ( 0,772799574687715 )
Int J Comput Assist Radiol Surg - Design and development of a virtual anatomic atlas of the human skull for automatic segmentation in computer-assisted surgery, preoperative planning, and navigation. ( 0,751206295842375 )
Comput Methods Programs Biomed - Automatic TAC extraction from dynamic cardiac PET imaging using iterative correlation from a population template. ( 0,745570614313395 )
Int J Comput Assist Radiol Surg - Mesh-based method for measuring intracranial volume in patients with craniosynostosis. ( 0,724134145680024 )
Int J Comput Assist Radiol Surg - Improved human observer performance in digital reconstructed radiograph verification in head and neck cancer radiotherapy. ( 0,70538611918011 )
Comput. Biol. Med. - Preoperative implant selection for two stage breast reconstruction with 3D imaging. ( 0,703910959094265 )
Int J Comput Assist Radiol Surg - Automatic cardiac ventricle segmentation in MR images: a validation study. ( 0,686998239667071 )
Int J Comput Assist Radiol Surg - Spectroscopy imaging in intraoperative MR suite: tissue characterization and optimization of tumor resection. ( 0,684872920699621 )
IEEE J Biomed Health Inform - A bicluster-based Bayesian principal component analysis method for microarray missing value estimation. ( 0,682157899324372 )
Comput. Biol. Med. - Fully automatic brain extraction algorithm for axial T2-weighted magnetic resonance images. ( 0,682132875263073 )
Comput Methods Programs Biomed - Genetic algorithms as a useful tool for trabecular and cortical bone segmentation. ( 0,676033248930105 )
Int J Comput Assist Radiol Surg - A morphological study of anatomical plates for acetabular posterior column. ( 0,673489333858308 )
Comput Math Methods Med - Investigation of attenuation correction for small-animal single photon emission computed tomography. ( 0,673340024560849 )
J. Comput. Biol. - Threshold group testing on inhibitor model. ( 0,670436473497153 )
Comput Methods Programs Biomed - HELOW: a program for testing extreme homogeneity in meta-analysis. ( 0,669509550567759 )
Med Biol Eng Comput - Efficient and robust estimation of blood oxygenation levels in single cerebral veins. ( 0,667085292428482 )
Comput Math Methods Med - Multiple active contours guided by differential evolution for medical image segmentation. ( 0,665702558898054 )
Int J Comput Assist Radiol Surg - Resting state fMRI feature-based cerebral glioma grading by support vector machine. ( 0,665093612148842 )
Int J Comput Assist Radiol Surg - Automated aorta segmentation in low-dose chest CT images. ( 0,662409530948477 )
J. Comput. Biol. - Maximal acyclic agreement forests. ( 0,657984645503137 )
Med Biol Eng Comput - Off-line determination of the optimal number of iterations of the robust anisotropic diffusion filter applied to denoising of brain MR images. ( 0,656625793586478 )
Comput. Biol. Med. - An effective measure for assessing the quality of biclusters. ( 0,655072495929722 )
Comput Methods Programs Biomed - Eyelid contour detection and tracking for startle research related eye-blink measurements from high-speed video records. ( 0,650525086874703 )
Comput Methods Programs Biomed - Lung cancer classification using neural networks for CT images. ( 0,647572688560876 )
Comput. Biol. Med. - Segmentation of anterior cruciate ligament in knee MR images using graph cuts with patient-specific shape constraints and label refinement. ( 0,647201081298722 )
Comput. Biol. Med. - Real time identification of active regions in muscles from high density surface electromyogram. ( 0,645820703880943 )
Med Biol Eng Comput - Adaptive removal of gradients-induced artefacts on ECG in MRI: a performance analysis of RLS filtering. ( 0,64219686597149 )
Methods Inf Med - Individual Thresholding of Voxel-based Functional Connectivity Maps. Estimation of Random Errors by Means of Surrogate Time Series. ( 0,641399793027009 )
Comput Math Methods Med - An entropy-based automated cell nuclei segmentation and quantification: application in analysis of wound healing process. ( 0,635690471090831 )
Telemed J E Health - A new chest compression depth feedback algorithm for high-quality CPR based on smartphone. ( 0,632832106949547 )
Int J Comput Assist Radiol Surg - Boundary estimation of fiber bundles derived from diffusion tensor images. ( 0,631888732387041 )
Int J Comput Assist Radiol Surg - A low-cost tracked C-arm (TC-arm) upgrade system for versatile quantitative intraoperative imaging. ( 0,625954529770111 )
Int J Comput Assist Radiol Surg - Three-dimensional prediction of free-flap volume in autologous breast reconstruction by CT angiography imaging. ( 0,624075352697966 )
J Clin Monit Comput - Effect of concurrent oxygen therapy on accuracy of forecasting imminent postoperative desaturation. ( 0,623412116459938 )
Comput Math Methods Med - Predictions of the length of lumbar puncture needles. ( 0,618433691182384 )
Med Biol Eng Comput - Inertial sensors in estimating walking speed and inclination: an evaluation of sensor error models. ( 0,614581768028678 )
Int J Comput Assist Radiol Surg - A computerized MRI biomarker quantification scheme for a canine model of Duchenne muscular dystrophy. ( 0,612997544065747 )
Comput Math Methods Med - Spatiotemporal quantification of local drug delivery using MRI. ( 0,612120149296094 )
Comput Methods Programs Biomed - Automatic model-based tracing algorithm for vessel segmentation and diameter estimation. ( 0,611260088702949 )
Int J Comput Assist Radiol Surg - Computer-aided nidus segmentation and angiographic characterization of arteriovenous malformations. ( 0,603152794073903 )
Comput Methods Programs Biomed - Novel mathematical algorithm for pupillometric data analysis. ( 0,597974089585481 )
Int J Comput Assist Radiol Surg - Optimal setting of image bounding box can improve registration accuracy of diffusion tensor tractography. ( 0,596708053060414 )
IEEE Trans Image Process - Unified framework for automated iris segmentation using distantly acquired face images. ( 0,592756196846261 )
Int J Comput Assist Radiol Surg - Usability of unbiased nonlocal means for de-noising intraoperative magnetic resonance images in neurosurgery. ( 0,590091533563323 )
Comput Math Methods Med - Retrieval of brain tumors with region-specific bag-of-visual-words representations in contrast-enhanced MRI images. ( 0,58893609332484 )
Comput. Biol. Med. - Accurate tumor localization and tracking in radiation therapy using wireless body sensor networks. ( 0,587112473268442 )
Comput Methods Programs Biomed - Bayesian sample-size determination for two independent Poisson rates. ( 0,585058746121549 )
Artif Intell Med - Fusing visual and clinical information for lung tissue classification in high-resolution computed tomography. ( 0,58433990361582 )
J Med Syst - A hybrid method based on fuzzy clustering and local region-based level set for segmentation of inhomogeneous medical images. ( 0,583697179771202 )
Int J Comput Assist Radiol Surg - A laboratory comparison of computer navigation and individualized guides for distal radius osteotomy. ( 0,583201468577174 )
Comput Methods Programs Biomed - Automatic segmentation of corpus callosum using Gaussian mixture modeling and Fuzzy C means methods. ( 0,57976698435338 )
Comput Methods Programs Biomed - Automatic multiple sclerosis lesion detection in brain MRI by FLAIR thresholding. ( 0,579579153674819 )
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. ( 0,579341403302409 )
Comput Methods Programs Biomed - A Gauss-Newton approach to joint image registration and intensity correction. ( 0,578177935801689 )
Spat Spatiotemporal Epidemiol - Error propagation models to examine the effects of geocoding quality on spatial analysis of individual-level datasets. ( 0,577199254528321 )
Comput. Biol. Med. - Missing value imputation in DNA microarrays based on conjugate gradient method. ( 0,575918104980312 )
Med Decis Making - An efficient method for computing single-parameter partial expected value of perfect information. ( 0,574737280916976 )
Comput Methods Programs Biomed - Adaptive network based on fuzzy inference system for equilibrated urea concentration prediction. ( 0,574269791416414 )
Comput. Biol. Med. - Automated retinal layers segmentation in SD-OCT images using dual-gradient and spatial correlation smoothness constraint. ( 0,573767421609817 )
IEEE Trans Image Process - Efficient image denoising method based on a new adaptive wavelet packet thresholding function. ( 0,573306973628647 )
Comput Methods Programs Biomed - A geometrical approach for evaluating left ventricular remodeling in myocardial infarct patients. ( 0,572569565853513 )
Comput. Biol. Med. - A straightforward approach to computer-aided polyp detection using a polyp-specific volumetric feature in CT colonography. ( 0,568879602153691 )
Neural Comput - Energy complexity of recurrent neural networks. ( 0,568092687931124 )
J Clin Monit Comput - Reliable real-time calculation of heart-rate complexity in critically ill patients using multiple noisy waveform sources. ( 0,567135256935554 )
Comput Methods Programs Biomed - A comparative approach of four different image registration techniques for quantitative assessment of coronary artery calcium lesions using intravascular ultrasound. ( 0,565520567107755 )
IEEE Trans Image Process - Noise reduction of cDNA microarray images using complex wavelets. ( 0,565227995450317 )
Comput Math Methods Med - Study of the effect of breast tissue density on detection of masses in mammograms. ( 0,56381594687718 )
Comput. Aided Surg. - A hybrid method based on level set and 3D region growing for segmentation of the thoracic aorta. ( 0,562795650024078 )
Comput Methods Programs Biomed - Accuracy of three different techniques for automatically estimating innervation zone location. ( 0,561639051756883 )
IEEE Trans Image Process - t-Tests, F-tests and Otsu's methods for image thresholding. ( 0,560494895194469 )
IEEE Trans Image Process - Groupwise registration of multimodal images by an efficient joint entropy minimization scheme. ( 0,559772507417825 )
Comput. Biol. Med. - Nearly automated motion artifacts correction between multi breath-hold short-axis and long-axis cine CMR images. ( 0,55663594001167 )
Comput Methods Programs Biomed - Obtaining optic disc center and pixel region by automatic thresholding methods on morphologically processed fundus images. ( 0,55585841110237 )
Comput. Biol. Med. - Automatic brain extraction methods for T1 magnetic resonance images using region labeling and morphological operations. ( 0,555337713618646 )
IEEE Trans Image Process - Image segmentation by MAP-ML estimations. ( 0,555158184147082 )
Int J Comput Assist Radiol Surg - Intraoperative detection and localization of cylindrical implants in cone-beam CT image data. ( 0,553193127050231 )
Comput Math Methods Med - A hybrid approach of using symmetry technique for brain tumor segmentation. ( 0,552662858352978 )
Int J Comput Assist Radiol Surg - A 3D computer-assisted treatment planning system for breast cancer brachytherapy treatment. ( 0,552345350304085 )
J Clin Monit Comput - Evaluation of a computer program for non-invasive determination of pulmonary shunt and ventilation-perfusion mismatch. ( 0,551796695501619 )
Int J Comput Assist Radiol Surg - Calibrated segmentation of CBCT and CT images for digitization of dental prostheses. ( 0,551674753310912 )
Med Biol Eng Comput - Automatic video detection of body movement during sleep based on optical flow in pediatric patients with epilepsy. ( 0,551510913551736 )
Neural Comput - Density-difference estimation. ( 0,550954556552861 )
Comput Methods Programs Biomed - A novel method for pulmonary embolism detection in CTA images. ( 0,550773888895505 )
Int J Comput Assist Radiol Surg - Liver segmentation for contrast-enhanced MR images using partitioned probabilistic model. ( 0,548454538648397 )
J Med Syst - Inter-greedy technique for fusion of different segmentation strategies leading to high-performance carotid IMT measurement in ultrasound images. ( 0,546795409414881 )
IEEE Trans Image Process - A new design tool for feature extraction in noisy images based on grayscale hit-or-miss transforms. ( 0,546131832713947 )
J. Med. Internet Res. - Biological calibration for web-based hearing tests: evaluation of the methods. ( 0,545094657913341 )
Methods Inf Med - Analysis of Fluorescence Lifetime Imaging Microscopy (FLIM) data. Based on a fully automated Laguerre deconvolution method. ( 0,544329548955715 )
Comput Methods Programs Biomed - Measurement error in statistical models of shape. ( 0,543940070851375 )
Int J Comput Assist Radiol Surg - Accurate two-dimensional cardiac strain calculation using adaptive windowed Fourier transform and Gabor wavelet transform. ( 0,542263866182167 )
Comput. Biol. Med. - Lung nodule segmentation and recognition using SVM classifier and active contour modeling: a complete intelligent system. ( 0,540960167833779 )
Comput Methods Programs Biomed - An approach to localize the retinal blood vessels using bit planes and centerline detection. ( 0,539878766554004 )
Comput Methods Programs Biomed - Reducing cross terms effects in the Choi-Williams transform of mioelectric signals. ( 0,539154310726658 )
Comput. Biol. Med. - Noninvasive identification of two lesions with local repolarization changes using two dipoles in inverse solution simulation study. ( 0,538287241295505 )
Int J Comput Assist Radiol Surg - Ameliorating slice gaps in multislice magnetic resonance images: an interpolation scheme. ( 0,537030392920588 )
Comput Methods Programs Biomed - Effect of missing RR-interval data on nonlinear heart rate variability analysis. ( 0,537006403802382 )
IEEE Trans Image Process - Sub-hexagonal phase correlation for motion estimation. ( 0,536624639774782 )