Abstract:
:The biodistribution of radiomanganese (54Mn) was studied in mice, rats, and dogs. Disappearance of radioactivity from the blood was extremely rapid, with a half-time of approximately 0.8 minutes. This resulted in very favorable myocardium-to-blood ratios, even at early times after administration. The myocardial uptake in dogs was greater than 3% at three and 15 minutes, with myocardium-to-blood ratios of about 40:1 at 15 minutes. Positron tomograms obtained with 52mMn clearly demonstrated regional myocardial perfusion. There was good correlation (r = 0.89) of microsphere-to-radiomanganese distribution in the infarcted dog heart.
journal_name
Radiologyjournal_title
Radiologyauthors
Atkins HL,Som P,Fairchild RG,Hui J,Schachner E,Goldman A,Ku Tdoi
10.1148/133.3.769subject
Has Abstractpub_date
1979-12-01 00:00:00pages
769-74issue
3 Pt 1eissn
0033-8419issn
1527-1315journal_volume
133pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::An inflammatory polyps of the renal pelvis that caused a mass effect at excretory urography simulated transitional cell carcinoma. In the differential diagnoses of intracalyceal masses, therefore, inflammatory polyp must be considered. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.144.3.7100460
更新日期:1982-08-01 00:00:00
abstract::In magnetic resonance (MR) imaging the distinction between vascular signal from flowing blood and thrombus of any nature is often difficult. Even though there are qualitative criteria to identify intravascular signal as coming from flowing blood, these can fail, and no definitive statement can be made on the nature of...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.164.2.3602400
更新日期:1987-08-01 00:00:00
abstract::The T1 and T2 relaxation times of primary tumors of the musculoskeletal system were calculated in 54 patients. No correlation was found between the relaxation values and the histopathologic type of the tumors. Lipoma had the same relaxation characteristics as normal fat. Otherwise tumors could be differentiated from n...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.167.3.3363140
更新日期:1988-06-01 00:00:00
abstract::Cystic hepatoblastomas share ultrasonographic characteristics with simple hepatic cysts; however, a distinction can be made by the demonstration of internal septations. The differentiation is important because cystic hepatoblastoma may have malignant potential. The ultrasonographic and scintigraphic findings in five c...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.138.1.6256810
更新日期:1981-01-01 00:00:00
abstract:PURPOSE:To determine if wrist arthrography changes surgeons' diagnoses and treatment plans for patients with chronic wrist pain. MATERIALS AND METHODS:Bilateral, three-compartment wrist arthrography was performed in 64 patients. Prospective questionnaires evaluated surgeons' diagnoses and management plans at three sta...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.200.3.8756940
更新日期:1996-09-01 00:00:00
abstract:PURPOSE:To compare unenhanced helical computed tomography (CT) and endoscopic retrograde cholangiopancreatography (ERCP) in the detection of common bile duct calculi. MATERIALS AND METHODS:Within 13 months, 51 patients (aged 18-94 years) with clinically suspected choledocholithiasis underwent unenhanced helical CT imm...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.203.3.9169700
更新日期:1997-06-01 00:00:00
abstract:PURPOSE:To analyze the effect of the 1991 Maryland legislative mandate of screening mammography benefits. MATERIALS AND METHODS:Claims submitted between January 1991 and December 1993 for outpatient mammograms obtained in women covered under Blue Cross Blue Shield of Maryland insurance indemnity contracts were analyze...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.198.3.8628850
更新日期:1996-03-01 00:00:00
abstract:PURPOSE:To evaluate the effect of computer-aided diagnosis (CAD) on radiologists' detection of pulmonary nodules. MATERIALS AND METHODS:Fifty chest computed tomographic (CT) examination cases were used. The mean nodule size was 0.81 cm +/- 0.60 (SD) (range, 0.3-2.9 cm). Alternative free-response receiver operating cha...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2302030049
更新日期:2004-02-01 00:00:00
abstract::Background Assessment of femoral torsion at preoperative hip imaging is commonly recommended. However, it is unclear whether MRI is as accurate as CT and how different methods affect femoral torsion measurements. Purpose To compare MRI- and CT-based assessment of femoral torsion by using four commonly used measurement...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2020192723
更新日期:2020-08-01 00:00:00
abstract::Persistent bile leaks after liver transplantation were successfully treated in three patients with percutaneous or surgical drainage of bilomas and endoscopic retrograde ampullary sphincterotomy. In all three patients, biliary anastomoses were achieved by means of choledochocholedochostomies, with a T-tube stent in th...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.179.3.2027980
更新日期:1991-06-01 00:00:00
abstract::Purpose To evaluate the performance of three imaging methods (radiography, dual-energy x-ray absorptiometry [DXA], and quantitative computed tomography [CT]) and that of a numerical analysis with finite element modeling (FEM) in the prediction of failure load of the proximal femur and to identify the best densitometri...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016142796
更新日期:2016-09-01 00:00:00
abstract:PURPOSE:To evaluate the 15-year trend in the use of computed tomography (CT) in hospitalized pediatric trauma patients admitted to Harborview Medical Center (HMC) from 1996 to 2010. MATERIALS AND METHODS:This Health Insurance Portability and Accountability Act-compliant retrospective study was approved by the institut...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.13120865
更新日期:2013-05-01 00:00:00
abstract::The number of folds in the proximal jejunum was measured retrospectively in 25 studies of patients with adult celiac disease and 75 control subjects. The average number of folds per inch of proximal jejunum in the group with celiac disease was 2.88 (none to five), as against 4.88 (three to seven) in the controls. The ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.158.3.3945730
更新日期:1986-03-01 00:00:00
abstract::Purpose To determine the effect of radiation dose and iterative reconstruction (IR) on noise, contrast, resolution, and observer-based detectability of subtle hypoattenuating liver lesions and to estimate the dose reduction potential of the IR algorithm in question. Materials and Methods This prospective, single-cente...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017161736
更新日期:2017-09-01 00:00:00
abstract::A simple device is described that can reduce personnel exposure from scatter radiation by up to 75%. The device consists of an oblong piece of shielding (0.75-mm lead equivalent) that is taped to the side of the patient during percutaneous renal stone removal and other interventional procedures. Contrary to other shie...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.159.3.3704160
更新日期:1986-06-01 00:00:00
abstract::This case series describes the radiologic appearances of gynecomastoid hyperplasia of the breast in our experience. The clinical histories, breast images, and histopathologic findings in six women were reviewed. At mammography, there was no abnormality in two women, an enlarging asymmetric density in three women, and ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.214.2.r00fe24553
更新日期:2000-02-01 00:00:00
abstract:PURPOSE:To assess the feasiblity of magnetic resonance (MR) susceptibility-weighted (SW) imaging as a tool to evaluate liver fibrosis grades in patients with chronic liver diseases (CLD) utilizing signal intensity (SI) measurements, with histopathologic findings as the reference standard. MATERIALS AND METHODS:This re...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.13122440
更新日期:2014-01-01 00:00:00
abstract:PURPOSE:To investigate whether apparent diffusion coefficients (ADCs) derived from diffusion-weighted (DW) magnetic resonance (MR) imaging at 3 T correlate with the clinical risk of prostate cancer in patients with tumors that are visible on MR images, with MR imaging/transrectal ultrasonography (US) fusion-guided biop...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.10100667
更新日期:2011-02-01 00:00:00
abstract:PURPOSE:To prospectively evaluate whether the characteristics of hepatic blood flow change during the early stages of fibrosis in patients with nonalcoholic fatty liver disease (NAFLD). MATERIALS AND METHODS:All participants provided written informed consent, and the study protocols were approved by the institutional ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14132952
更新日期:2015-02-01 00:00:00
abstract:PURPOSE:To establish whether early use of magnetic resonance (MR) imaging or computed tomography (CT) influences treatment and outcome of patients with low back pain (LBP) and whether it is cost-effective. MATERIALS AND METHODS:In a multicenter randomized study, two imaging policies for LBP were compared in 782 partic...
journal_title:Radiology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1148/radiol.2312030886
更新日期:2004-05-01 00:00:00
abstract:PURPOSE:To investigate whether default mode network (DMN) spatial properties can be directly affected by pain, with a comparison of painful and nonpainful conditions. MATERIALS AND METHODS:The authors performed a functional magnetic resonance (MR) imaging study, approved by the local institutional ethics committee, in...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2533090602
更新日期:2009-12-01 00:00:00
abstract::We attempted to use hand-held, high-resolution breast sonography to localize for biopsy 11 solid, nonpalpable lesions detected by mammography. Using sonography, we identified and localized only one of four lesions presenting as poorly defined masses and only one of seven lesions presenting as clusters of tiny calcific...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.155.3.3890010
更新日期:1985-06-01 00:00:00
abstract::Renal failure induced by intravenous iodinated contrast media is a frequent medical problem. While such cases are generally reported first by the clinician, the phenomenon can be seen even earlier by the radiologist. An abnormally persistent nephrogram is a sign of abnormal clearance, which in turn should alert the ph...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/131.2.553
更新日期:1979-05-01 00:00:00
abstract::This retrospective study of 144 patients was made to (a) assess the potential of magnetic resonance (MR) for demonstrating lymph nodes using spin-echo technique, (b) compare the MR results with those of CT, and (c) determine the optimal pulse-sequence interval (TR) and echo-delay time (TE) for imaging lymph nodes. The...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.153.3.6093190
更新日期:1984-12-01 00:00:00
abstract:PURPOSE:To evaluate a technique to perform fluoroscopically directed thoracic transforaminal epidural injections. MATERIALS AND METHODS:Institutional review board approval and a waiver of consent were obtained for this retrospective HIPAA-compliant study. Findings from 198 consecutively performed foraminal nerve block...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.09082085
更新日期:2010-02-01 00:00:00
abstract::In a series of nine stereotaxic large-core biopsies of calcifications, radiography of the specimen was used to ensure that appropriate tissue was removed. In eight cases, calcifications were evident at radiography as well as at histologic evaluation. Four cases were malignant and four were benign, and in one case in w...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.188.2.8327720
更新日期:1993-08-01 00:00:00
abstract::History A 53-year-old man experienced headache and double vision that progressed over 1 year. After a traumatic fall, he was hospitalized, and proptosis was identified at physical examination. Laboratory tests were remarkable for leukocytosis. Hematocrit level, thyroid stimulating hormone level, autoimmune antibody le...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017141151
更新日期:2017-09-01 00:00:00
abstract:PURPOSE:To determine the feasibility of a statistical classification strategy (SCS) and the identity of metabolites of bacterial and host origins that potentially contributed to the most discriminatory regions of magnetic resonance (MR) spectra from Staphylococcus aureus abscesses of biopsy material from controls, glio...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2361040869
更新日期:2005-07-01 00:00:00
abstract:PURPOSE:To measure the safety and effectiveness of conscious sedation in order to assess utilization and the effect on magnetic resonance (MR) imaging examinations. MATERIALS AND METHODS:A database of conscious sedation records for MR imaging at the Johns Hopkins Hospital, Baltimore, Md, from 1991 to 1998 was searched...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.216.3.r00se45645
更新日期:2000-09-01 00:00:00
abstract::Acquisition and measurement of left ventricular (LV) volumes with a three-dimensional data set of cine magnetic resonance (MR) images from apex to base is a time-consuming process. Results of a study with 10 healthy volunteers and 10 patients with LV hypertrophy were prospectively evaluated. The heart was shown in the...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.188.2.8327680
更新日期:1993-08-01 00:00:00