Abstract:
:A method of image analysis was developed for correlation of hemangiomas detected at computed tomography (CT) and/or magnetic resonance (MR) imaging with increased blood pool activity evident at single photon emission CT (SPECT) performed after labeling of red blood cells with technetium-99m. Image analysis was performed in 20 patients with 35 known hepatic hemangiomas. After section thickness and pixel sizes of the different studies were matched, intrinsic landmarks were chosen to identify anatomically corresponding locations. Regions of interest (ROIs) drawn on the CT and/or MR images were translated, rotated, and reprojected to match the areas of interest on the corresponding SPECT images by means of a two-dimensional polynomial-based warping algorithm. Analysis of ROIs on 30 SPECT-MR and 20 SPECT-CT pairs of registered images provided absolute confirmation that 34 suspected hemangiomas identified on SPECT images correlated exactly with lesions seen on CT and/or MR images. Accuracy of fusion was within an average of 1.5 pixels +/- 0.8 (+/- 1 standard deviation). The technique enabled diagnostic confirmation of hemangiomas as small as 1.0 cm and proved useful for evaluating lesions located adjacent to intrahepatic vessels.
journal_name
Radiologyjournal_title
Radiologyauthors
Birnbaum BA,Noz ME,Chapnick J,Sanger JJ,Megibow AJ,Maguire GQ Jr,Weinreb JC,Kaminer EM,Kramer ELdoi
10.1148/radiology.181.2.1924790subject
Has Abstractpub_date
1991-11-01 00:00:00pages
469-74issue
2eissn
0033-8419issn
1527-1315journal_volume
181pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract:PURPOSE:To assess emergency ultrasonography (US) for detection of bowel and mesenteric injury from blunt trauma. MATERIALS AND METHODS:For 3 years, prospective data on all patients undergoing emergency US were recorded. Patients with bowel and mesenteric injury were identified, and physical examination, laboratory, co...
journal_title:Radiology
pub_type: 临床试验,杂志文章
doi:10.1148/radiology.211.2.r99ma54399
更新日期:1999-05-01 00:00:00
abstract:PURPOSE:To evaluate the efficacy of susceptibility-weighted (SW) magnetic resonance (MR) imaging for the assessment of the posttreatment change in oxygen saturation in the draining vein in patients with spinal arteriovenous malformation (AVM). MATERIALS AND METHODS:The study protocol was approved by the institutional ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.09090286
更新日期:2010-03-01 00:00:00
abstract:PURPOSE:To document the possible association of segmental tracheomalacia in the thoracic inlet with the combination of a large thymus and normal innominate artery. MATERIALS AND METHODS:Eight infants with symptoms of innominate artery compression of the trachea were studied. The diagnostic approach included observatio...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.190.1.8259390
更新日期:1994-01-01 00:00:00
abstract::Partial Budd-Chiari syndrome was produced in 8 monkeys by obstructing 2 or 3 lobar hepatic veins with a rapidly polymerizing plastic. Hepatic angiography done 1-3 months later revealed crowded tortuous arteries and a dense hepatogram in the lobe with venous occlusion. Unobstructed lobes were hypertrophied. Retrograde ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/122.3.629
更新日期:1977-03-01 00:00:00
abstract::Ultrasound-guided fallopian tube catheterization was performed in seven women a total of 14 times. The women had normal-appearing fallopian tubes at hysterosalpingography and received sperm via the catheter as a way to overcome their inability to conceive. Techniques similar to those used for fluoroscopically guided f...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.180.2.2068330
更新日期:1991-08-01 00:00:00
abstract:PURPOSE:To explore the neural correlates of the thalamus by using resting-state functional magnetic resonance (MR) imaging and to investigate whether thalamic resting-state networks (RSNs) are disrupted in patients with mild traumatic brain injury (MTBI). MATERIALS AND METHODS:This HIPAA-compliant study was approved b...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11110014
更新日期:2011-09-01 00:00:00
abstract::Background Trends in noninvasive diagnostic imaging (NDI) utilization rates have predominantly been reported in Medicare enrollees. To the authors' knowledge, there has been no prior direct comparison of utilization rates between Medicare and commercially insured patients. Purpose To analyze trends in NDI utilization ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2019191116
更新日期:2020-02-01 00:00:00
abstract::Purpose To investigate whether nonhemodynamic resonant saturation effects can be detected in patients with focal epilepsy by using a phase-cycled stimulus-induced rotary saturation (PC-SIRS) approach with spin-lock (SL) preparation and whether they colocalize with the seizure onset zone and surface interictal epilepti...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016150368
更新日期:2016-07-01 00:00:00
abstract::Transbronchial biopsy to sample lymph nodes and tumors that are not visible at endoscopy has a poor (<50%) success rate. These nodes can be highlighted easily at virtual computed tomographic (CT) bronchoscopy to provide a guide. This study was performed to evaluate if the addition of this information to the bronchosco...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2211001585
更新日期:2001-11-01 00:00:00
abstract::To improve reproducibility in proton magnetic resonance (MR) spectroscopic imaging in human brain, simultaneous acquisition of the internal water reference and metabolite signals was evaluated. Measurements in healthy volunteers showed that the increase in dynamic range from signal oversampling was sufficient to avoid...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.217.1.r00oc36296
更新日期:2000-10-01 00:00:00
abstract:PURPOSE:To develop and evaluate a method based on ultrashort echo-time radial magnetic resonance (MR) imaging to quantify bone water (BW) concentration as a new metric of bone quality in human cortical bone in vivo. MATERIALS AND METHODS:Human subject studies were institutional review board approved and HIPAA complian...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2482071995
更新日期:2008-09-01 00:00:00
abstract:PURPOSE:To determine diagnostic accuracy of four-channel multi-detector row computed tomography (CT) in emergency room and inpatient populations suspected of having acute pulmonary embolism (PE) who prospectively underwent both CT and pulmonary arteriography (PA). MATERIALS AND METHODS:Patients referred for PA to asse...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2333031744
更新日期:2004-12-01 00:00:00
abstract::Four new cases of cranial echinococcosis are presented and the literature is reviewed. Young males are most commonly affected. Early cases present as an expansile osteolytic lesion in the diploe. The more advanced forms manifest as multilocular or unilocular destructive lesions with adjacent soft-tissue masses. Two pa...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/118.1.97
更新日期:1976-01-01 00:00:00
abstract::The relationship between patient waiting time and capacity and utilization is quantified. By deciding upon the average acceptable and maximum allowable waiting times, the required capacity and resulting utilization rate are fixed. The data needed for analysis include waiting time, patient volume, time required for spe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/130.3.637
更新日期:1979-03-01 00:00:00
abstract:PURPOSE:To determine the effect of magnetic resonance (MR) imaging findings on management of complex fetal disorders. MATERIALS AND METHODS:MR imaging of the fetus was performed in 25 consecutive pregnant patients referred because of possible complex fetal disorders suspected on the basis of ultrasonographic (US) find...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.213.3.r99dc39691
更新日期:1999-12-01 00:00:00
abstract::Sixteen patients with cirrhosis of the liver underwent cranial magnetic resonance (MR) imaging and transarterial portography to evaluate the relationship between basal ganglia lesions and portal-systemic collateral vessels. No neuropsychiatric disturbance was observed in any of the patients at the time of the MR exami...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.179.2.2014310
更新日期:1991-05-01 00:00:00
abstract::The line spread function (LSF) and modulation transfer function (MTF) of 9 rare-earth screen/film systems were measured and compared with those of two fast calcium tungstate systems, using double-emulsion films sandwiched between two screens and mounted in regular cassettes. The LSFs were found to fit exponential func...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/121.2.473
更新日期:1976-11-01 00:00:00
abstract::An animal study was undertaken to develop a balloon dilation technique that could be used in humans to treat the common ailment of benign prostatic hypertrophy. Dogs were used as a model because of the similarities in the prostate between the two species and the ready availability of the canines. A retrograde transure...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.163.3.2437610
更新日期:1987-06-01 00:00:00
abstract::Improved visualization of the initial bolus of contrast material injected via a lateral Cl-2 puncture for cervical myelography can be obtained by using real-time digital subtraction fluoroscopy. As little as 0.1 ml of metrizamide (250 mg%) can be demonstrated easily. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.151.1.6366910
更新日期:1984-04-01 00:00:00
abstract::Portable sustained graded traction for control of the displaced cervical spine particularly for patients undergoing tomography or gas myelography, is described. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/125.3.826
更新日期:1977-12-01 00:00:00
abstract:PURPOSE:To illustrate the normal variants and developmental anomalies of the skull base on computed tomographic (CT) scans. MATERIALS AND METHODS:One hundred eighty-nine children (age range, newborn to 18 years; median age, 4.0 years) without skull base deformity were referred for cranial CT. Normal developmental vari...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.196.3.7644640
更新日期:1995-09-01 00:00:00
abstract:PURPOSE:To evaluate the relationship between radiation doses and lung computed tomographic (CT) fluoroscopic scan parameters and to determine optimal scan parameters for performance of lung interventional radiologic (IR) procedures. MATERIALS AND METHODS:The institutional review board approved this prospective study, ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.09090733
更新日期:2010-04-01 00:00:00
abstract:PURPOSE:To identify opportunities for improving patient-centered communication about diagnostic imaging tests that involve the use of radiation in a cancer care setting. MATERIALS AND METHODS:Institutional review board approval and informed consent were obtained for this HIPAA-compliant study. Patient knowledge, infor...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.15132905
更新日期:2015-05-01 00:00:00
abstract::Interstitial lymphangiography performed with intradermal injection of a new nonionic dimeric contrast agent was used to examine 34 normal lower extremities and 35 lower extremities with proved lymphedema. An infusion pump was used to inject 2 mL of the contrast agent into the intradermal interdigital space at a rate o...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.170.2.2911660
更新日期:1989-02-01 00:00:00
abstract::A prospective study of 582 pediatric cranial computed tomographic (CT) examinations was made in order to determine the efficacy and safety of two sedation regimens and general anesthesia. Two hundred seventy-nine outpatients were randomly given oral chloral hydrate (80 mg/kg) or an intramuscular preparation composed o...
journal_title:Radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1148/radiology.143.2.7071350
更新日期:1982-05-01 00:00:00
abstract::A case of a 19-year-old woman with generalized neurofibromatosis and hypertension due to left main renal artery mesodermal dysplasia is presented. Renal artery stenosis was effectively treated with percutaneous transluminal angioplasty. The relevant literature is also reviewed. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.139.3.6785820
更新日期:1981-06-01 00:00:00
abstract::A grid consisting of a focused array of radiopaque strips has been constructed. No interspace material is employed, and, during an exposure, the arrangement moves so that the grid strips remain focused and a uniform film density is obtained. Preliminary measurements and radiographs of patients indicate that such a dev...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.135.3.7384470
更新日期:1980-06-01 00:00:00
abstract::In five patients undergoing magnetic resonance imaging of the knee after athletic injuries, the authors identified a vacuum phenomenon that simulated medial meniscal or joint compartment cartilaginous abnormality. A cadaveric knee was injected with air, and the findings were re-created. The presence of air or gas betw...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.180.2.2068320
更新日期:1991-08-01 00:00:00
abstract::Magnetic resonance (MR) imaging was performed in 17 patients, 11-84 years of age, referred for evaluation of possible osteomyelitis involving the appendicular skeleton. MR imaging permitted successful identification of osteomyelitis in ten patients (four acute, two subacute with Brodie abscess, two chronic, and two ac...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.166.1.3336680
更新日期:1988-01-01 00:00:00
abstract:PURPOSE:To determine how sensitive and specific the magnetic resonance (MR) imaging finding of subcallosal striations is for multiple sclerosis (MS). MATERIALS AND METHODS:In 18 patients with clinically suspected MS and 32 age-matched patients without MS, sagittal 2-mm fast fluid-attenuated inversion-recovery (FLAIR) ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.210.1.r99ja38149
更新日期:1999-01-01 00:00:00