Med Biol Eng Comput - Using a low-amplitude RF pulse at echo time (LARFET) for device localization in MRI.

Tópicos

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

Resumo

We describe a new method for frequency down-conversion of MR signals acquired with the radio-frequency projections method for device localization. A low-amplitude, off-center RF pulse applied simultaneously with the echo signal is utilized as the reference for frequency down-conversion. Because of the low-amplitude and large offset from the Larmor frequency, the RF pulse minimally interfered with magnetic resonance of protons. We conducted an experiment with the coil placed at different positions to verify this concept. The down-converted signal was transformed into optical signal and transmitted via fiber-optic cable to a receiver unit placed outside the scanner room. The position of the coil could then be determined by the frequency analysis of this down-converted signal and superimposed on previously acquired MR images for comparison. Because of minimal positional errors (= 0.8 mm), this new device localization method may be adequate for most interventional MRI applications.

Resumo Limpo

describ new method frequenc downconvers mr signal acquir radiofrequ project method devic local lowamplitud offcent rf puls appli simultan echo signal util refer frequenc downconvers lowamplitud larg offset larmor frequenc rf puls minim interf magnet reson proton conduct experi coil place differ posit verifi concept downconvert signal transform optic signal transmit via fiberopt cabl receiv unit place outsid scanner room posit coil determin frequenc analysi downconvert signal superimpos previous acquir mr imag comparison minim posit error mm new devic local method may adequ intervent mri applic

Resumos Similares

Int J Comput Assist Radiol Surg - Development of a real-time tactile sensing system for brain tumor diagnosis. ( 0,598285616064421 )
Neural Comput - A causal perspective on the analysis of signal and noise correlations and their role in population coding. ( 0,591286226513024 )
Comput Methods Programs Biomed - Algorithm for registration of full Scanning Laser Ophthalmoscope video sequences. ( 0,583691314005677 )
Comput. Biol. Med. - Extracting biomarkers of autism from MEG resting-state functional connectivity networks. ( 0,581221386257953 )
Comput. Biol. Med. - Three-dimensional thrombus segmentation in abdominal aortic aneurysms using graph search based on a triangular mesh. ( 0,574135348828116 )
Int J Comput Assist Radiol Surg - Minimization of target registration error for vertebra in image-guided spine surgery. ( 0,570213251251183 )
J Clin Monit Comput - Investigation of photoplethysmographic signals and blood oxygen saturation values obtained from human splanchnic organs using a fiber optic sensor. ( 0,566230788069734 )
Int J Comput Assist Radiol Surg - Automatic model-based contour detection of left ventricle myocardium from cardiac CT images. ( 0,566069965605664 )
J Med Syst - Variable threshold method for ECG R-peak detection. ( 0,564223360222229 )
Med Biol Eng Comput - In vitro quantification of the performance of model-based mono-planar and bi-planar fluoroscopy for 3D joint kinematics estimation. ( 0,560503157704487 )
Int J Comput Assist Radiol Surg - 4D-CT Lung registration using anatomy-based multi-level multi-resolution optical flow analysis and thin-plate splines. ( 0,560398500255651 )
Telemed J E Health - The design of the m-health service application using a Nintendo DS game console. ( 0,560176328824326 )
J Med Syst - Statistical signal processing technique for identification of different infected sites of the diseased lungs. ( 0,558974656744871 )
Comput Methods Programs Biomed - Kinematics based sensory fusion for wearable motion assessment in human walking. ( 0,55889138600172 )
Comput. Biol. Med. - Investigating a compact phantom and setup for testing body sound transducers. ( 0,557547413779567 )
J Med Syst - The effect of textile-based inductive coil sensor positions for heart rate monitoring. ( 0,556988253359814 )
Int J Comput Assist Radiol Surg - Calibration of the motor-assisted robotic stereotaxy system: MARS. ( 0,556968591107106 )
Int J Comput Assist Radiol Surg - Segmentation of radiographic images under topological constraints: application to the femur. ( 0,5560193155307 )
Int J Comput Assist Radiol Surg - Morphometry-based measurements of the structural response to whole-brain radiation. ( 0,55490484469393 )
Med Biol Eng Comput - Non-linear separation of pressure, velocity and wave intensity into forward and backward components. ( 0,554700684644705 )
Int J Comput Assist Radiol Surg - Improving N-wire phantom-based freehand ultrasound calibration. ( 0,554524731845203 )
Comput. Biol. Med. - Interactive development of a CT-based tissue model for ultrasound simulation. ( 0,553073123858668 )
Int J Comput Assist Radiol Surg - Non-iterative partial view 3D ultrasound to CT registration in ultrasound-guided computer-assisted orthopedic surgery. ( 0,550575948142992 )
Comput Methods Programs Biomed - Automatic moment segmentation and peak detection analysis of heart sound pattern via short-time modified Hilbert transform. ( 0,549807754239742 )
Comput Methods Programs Biomed - A comparative approach of four different image registration techniques for quantitative assessment of coronary artery calcium lesions using intravascular ultrasound. ( 0,549780994627357 )
Int J Comput Assist Radiol Surg - A miniature accelerometer-based guidance device for percutaneous computed tomography-guided punctures. ( 0,543135117616002 )
Comput Methods Programs Biomed - Mobile wearable device for long term monitoring of vital signs. ( 0,541645541228131 )
J Med Syst - Unbiased group-wise image registration: applications in brain fiber tract atlas construction and functional connectivity analysis. ( 0,541509241119958 )
Int J Comput Assist Radiol Surg - Evaluation of portable CT scanners for otologic image-guided surgery. ( 0,541292276868785 )
Int J Med Robot - Mini-navigator: a new system for navigated deformity corrections. ( 0,540733488133144 )
J Clin Monit Comput - Intraoperative MRI electrical noise and monitor ECG filters affect arrhythmia detection and identification. ( 0,540413005333376 )
Wiley Interdiscip Rev Syst Biol Med - Tactile sensory system: encoding from the periphery to the cortex. ( 0,538179459661633 )
Int J Comput Assist Radiol Surg - Validation of a hybrid Doppler ultrasound vessel-based registration algorithm for neurosurgery. ( 0,536217216589494 )
Med Biol Eng Comput - Novel framework for registration of pedobarographic image data. ( 0,532888336066998 )
Comput Methods Programs Biomed - Elastic image registration for guiding focal laser ablation of prostate cancer: preliminary results. ( 0,531884711373137 )
Int J Comput Assist Radiol Surg - The use of a head-mounted display in oral implantology: a feasibility study. ( 0,530003811091077 )
Int J Comput Assist Radiol Surg - A 3D active model framework for segmentation of proximal femur in MR images. ( 0,529985730014202 )
Int J Comput Assist Radiol Surg - Electromagnetic tracking for US-guided interventions: standardized assessment of a new compact field generator. ( 0,529870901937304 )
Int J Comput Assist Radiol Surg - Markerless estimation of patient orientation, posture and pose using range and pressure imaging : for automatic patient setup and scanner initialization in tomographic imaging. ( 0,529114926488625 )
J Clin Monit Comput - A novel airway device with tactile sensing capabilities for verifying correct endotracheal tube placement. ( 0,528935410575899 )
Comput. Biol. Med. - A novel method for retinal vessel tracking using particle filters. ( 0,528177953171351 )
IEEE Trans Image Process - Groupwise registration of multimodal images by an efficient joint entropy minimization scheme. ( 0,527717545133288 )
Int J Comput Assist Radiol Surg - Arterial contour detectability in head CT angiography. ( 0,525547741421478 )
Comput Methods Programs Biomed - An algorithm for on-line detection of high frequency oscillations related to epilepsy. ( 0,525037182623395 )
Methods Inf Med - Lung registration using automatically detected landmarks. ( 0,524738633543222 )
Int J Comput Assist Radiol Surg - An error analysis perspective for patient alignment systems. ( 0,524721032790278 )
Telemed J E Health - Wireless portable electrocardiogram and a tri-axis accelerometer implementation and application on sleep activity monitoring. ( 0,52371565323469 )
Comput. Biol. Med. - Real time identification of active regions in muscles from high density surface electromyogram. ( 0,523128521081739 )
Comput. Biol. Med. - Connectivity analysis of multichannel EEG signals using recurrence based phase synchronization technique. ( 0,522796206670166 )
Int J Comput Assist Radiol Surg - Catheter tip tracking for MR-guided interventions using discrete Kalman filter and mean shift localization. ( 0,522513732494488 )
Telemed J E Health - Evaluation of unconstrained monitoring technology used in the smart bed for u-health environment. ( 0,520233790319098 )
Int J Comput Assist Radiol Surg - Fusion of coronary angiography and stress echocardiography for myocardial viability evaluation. ( 0,520155376278705 )
Int J Med Robot - MR compatible positioning device for guiding a focused ultrasound system for the treatment of brain deseases. ( 0,52007206617858 )
J Med Syst - Image analysis tools for evaluation of microscopic views of immunohistochemically stained specimen in medical research-a review. ( 0,518926022066124 )
Int J Comput Assist Radiol Surg - Target visibility enhancement for C-arm cone beam CT-fluoroscopy-guided hepatic needle placement: implementation and accuracy evaluation. ( 0,518643427080514 )
J Clin Monit Comput - Accurate and stable continuous monitoring module by mainstream capnography. ( 0,515596546300724 )
Int J Comput Assist Radiol Surg - A framework for correcting brain retraction based on an eXtended Finite Element Method using a laser range scanner. ( 0,515069318692181 )
IEEE Trans Pattern Anal Mach Intell - Multi-Atlas Segmentation with Joint Label Fusion. ( 0,515041765786953 )
Int J Comput Assist Radiol Surg - Wireless mobile technology to improve workflow and feasibility of MR-guided percutaneous interventions. ( 0,514395638294366 )
Comput. Biol. Med. - An efficient neural network based method for medical image segmentation. ( 0,512165823223805 )
IEEE J Biomed Health Inform - A dynamic evidential network for fall detection. ( 0,512123162735035 )
Int J Comput Assist Radiol Surg - Accuracy analysis in MRI-guided robotic prostate biopsy. ( 0,509825763657936 )
Int J Comput Assist Radiol Surg - MRI-compatible positioning device for guiding a focused ultrasound system for transrectal treatment of prostate cancer. ( 0,509373057294195 )
Int J Neural Syst - Phase synchronization in brain networks derived from correlation between probabilities of recurrences in functional MRI data. ( 0,509091068159524 )
Telemed J E Health - Remote patient monitoring based on ZigBee: lessons from a real-world deployment. ( 0,508649892479692 )
Int J Comput Assist Radiol Surg - Fast rigid registration of pre-operative magnetic resonance images to intra-operative ultrasound for neurosurgery based on high confidence gradient orientations. ( 0,507091475478954 )
Int J Comput Assist Radiol Surg - Fully automatic extraction of human spine curve from MR images using methods of efficient intervertebral disk extraction and vertebra registration. ( 0,505296126792044 )
IEEE Trans Image Process - HAIRIS: a method for automatic image registration through histogram-based image segmentation. ( 0,505135644062649 )
Int J Comput Assist Radiol Surg - Analysis of the micro-migration of sliding hip screws by using point-based registration. ( 0,505113923231623 )
Med Biol Eng Comput - Predicting 3D pose in partially overlapped X-ray images of knee prostheses using model-based Roentgen stereophotogrammetric analysis (RSA). ( 0,50414996664761 )
Int J Comput Assist Radiol Surg - New prototype neuronavigation system based on preoperative imaging and intraoperative freehand ultrasound: system description and validation. ( 0,502735945717071 )
Int J Comput Assist Radiol Surg - Interactive navigation of segmented MR angiograms using simultaneous curved planar and volume visualizations. ( 0,501083392730744 )
Comput Methods Programs Biomed - A new algorithm for quadratic sample entropy optimization for very short biomedical signals: application to blood pressure records. ( 0,501063465955024 )
Med Biol Eng Comput - Computer-assisted and patient-specific 3-D planning and evaluation of a single-cut rotational osteotomy for complex long-bone deformities. ( 0,500824806924034 )
IEEE J Biomed Health Inform - Volume Preserved Mass-spring Model with Novel Constraints for Soft Tissue Deformation. ( 0,500767945521882 )
Int J Comput Assist Radiol Surg - Brain-shift compensation by non-rigid registration of intra-operative ultrasound images with preoperative MR images based on residual complexity. ( 0,500551730540548 )
J Med Syst - A comprehensive study of channel estimation for WBAN-based healthcare systems: feasibility of using multiband UWB. ( 0,500367836436127 )
Int J Comput Assist Radiol Surg - C-arm angle measurement with accelerometer for brachytherapy: an accuracy study. ( 0,499743257104309 )
Int J Med Robot - Correction method for wireless electromagnetic localization of microcapsule devices. ( 0,499513428952282 )
Int J Comput Assist Radiol Surg - Multi-slice-to-volume registration for MRI-guided transperineal prostate biopsy. ( 0,499132425710876 )
Comput. Aided Surg. - Accuracy of a 3D fluoroscopic navigation system using a flat-panel detector-equipped C-arm. ( 0,497998575287106 )
J. Med. Internet Res. - Self-test web-based pure-tone audiometry: validity evaluation and measurement error analysis. ( 0,497463531218056 )
Int J Comput Assist Radiol Surg - Towards accurate, robust and practical ultrasound-CT registration of vertebrae for image-guided spine surgery. ( 0,497330266756119 )
Comput Methods Programs Biomed - Augment low-field intra-operative MRI with preoperative MRI using a hybrid non-rigid registration method. ( 0,497081947248475 )
Int J Comput Assist Radiol Surg - Extreme leg motion analysis of professional ballet dancers via MRI segmentation of multiple leg postures. ( 0,496676145513992 )
Int J Comput Assist Radiol Surg - Usefulness of a glass-free medical three-dimensional autostereoscopic display in neurosurgery. ( 0,495683235942937 )
Int J Comput Assist Radiol Surg - Determining the position of a patient reference from C-Arm views for image guided navigation. ( 0,495498957062443 )
Int J Comput Assist Radiol Surg - A low-cost tracked C-arm (TC-arm) upgrade system for versatile quantitative intraoperative imaging. ( 0,495419223548206 )
Neural Comput - Rewiring-induced chaos in pulse-coupled neural networks. ( 0,493168971065459 )
Int J Comput Assist Radiol Surg - Experimental evaluation of ultrasound-guided 3D needle steering in biological tissue. ( 0,49282199361697 )
Int J Comput Assist Radiol Surg - Optimal setting of image bounding box can improve registration accuracy of diffusion tensor tractography. ( 0,492573537693614 )
IEEE Trans Image Process - Integrating segmentation information for improved MRF-based elastic image registration. ( 0,491379727101183 )
Comput Methods Programs Biomed - Evaluation of the registration of temporal series of contrast-enhanced perfusion magnetic resonance 3D images of the liver. ( 0,49094803047258 )
Comput. Biol. Med. - Automated retinal layers segmentation in SD-OCT images using dual-gradient and spatial correlation smoothness constraint. ( 0,490819278321224 )
Comput Methods Programs Biomed - Reducing cross terms effects in the Choi-Williams transform of mioelectric signals. ( 0,490030435766932 )
Int J Comput Assist Radiol Surg - Aortic valve prosthesis tracking for transapical aortic valve implantation. ( 0,489880463545766 )
Int J Comput Assist Radiol Surg - Analysis of electrode deformations in deep brain stimulation surgery. ( 0,489651494122847 )
Methods Inf Med - Evaluating strategies for marker ranking in genome-wide association studies of complex traits. ( 0,489035608256513 )
Telemed J E Health - The design and implementation of a rescue terminal with vital signs telemonitoring based on Beidou 1 navigation satellite system. ( 0,488660368263215 )
J Am Med Inform Assoc - Multidimensional evaluation of a radio frequency identification wi-fi location tracking system in an acute-care hospital setting. ( 0,488041841905653 )