Abstract:
PURPOSE:To test, by using an electrotransfer protocol for the transfection of skeletal muscle with naked plasmid complementary DNA, whether in vivo magnetic resonance (MR) imaging can help delineate either the spatial extent of the electric field when contrast agent is injected intraperitoneally or the transfection area when contrast agent is injected locally. MATERIALS AND METHODS:Three groups of five mice each were examined at 4 T. Gadopentetate dimeglumine was injected intraperitoneally before electroporation in group 1 and after electroporation in group 2. In group 3, gadopentetate dimeglumine was coinjected in situ with plasmid pCMV-beta Gal in the gastrocnemius muscle before electroporation. MR imaging and muscle preparation for histologic examination were performed 3 days later. On T1-weighted images, increase of muscle signal intensity was determined in regions of interest (ROIs) of treated legs and compared with contralateral ROIs. Comparison of signal intensity increase between groups 1 and 2 was performed with Kruskal-Wallis test. RESULTS:In groups 1 and 3, T1-weighted images of treated muscle showed zones of strongly increased signal intensity. In corresponding ROIs of groups 1, 2, and 3, the mean T1-weighted signal intensity increase at day 3 was 1.64 +/- 0.20 (SD), 1.16 +/- 0.06, and 1.58 +/- 0.17, respectively. The difference between groups 1 and 2 (ie, gadopentetate dimeglumine injected before and after electrotransfer) was significant (P <.001) both without and with correction for T2 variation (1.47 +/- 0.19 and 1.04 +/- 0.09, respectively). In group 3, after in situ coinjection of gadopentetate dimeglumine and plasmid, the area of increased signal intensity revealed at ex vivo MR imaging of the muscle showed a reasonable concordance with the transfected area revealed with beta-galactosidase on histologic sections. CONCLUSION:In vivo and ex vivo results indicate that atraumatic visualization of the permeabilized and transfected area is possible.
journal_name
Radiologyjournal_title
Radiologyauthors
Paturneau-Jouas M,Parzy E,Vidal G,Carlier PG,Wary C,Vilquin JT,de Kerviler E,Schwartz K,Leroy-Willig Adoi
10.1148/radiol.2283020482subject
Has Abstractpub_date
2003-09-01 00:00:00pages
768-75issue
3eissn
0033-8419issn
1527-1315pii
2283020482journal_volume
228pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract:PURPOSE:To measure scanner and patient variation in computed tomographic (CT) numbers for electron-beam CT and to determine the ability of calibration phantoms to reduce variability in calcium quantitation. MATERIALS AND METHODS:Two calibration phantoms were imaged to ensure longitudinal homogeneity and to determine t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.196.1.7784560
更新日期:1995-07-01 00:00:00
abstract:PURPOSE:To evaluate positron emission tomography (PET) with fluorine-18-labeled fluorodeoxyglucose (FDG) for detection of pancreatic cancer compared with computed tomography (CT) and ultrasonography (US). MATERIALS AND METHODS:Forty patients with suspected pancreatic cancer underwent static PET after intravenous injec...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.192.1.8208970
更新日期:1994-07-01 00:00:00
abstract::Magnetic resonance (MR) imaging of the temporomandibular joint was performed in two subjects using a 1.5 T experimental imaging system equipped with a 6.5 cm surface coil antenna. Normal and pathologic anatomy were demonstrated with exquisite detail. Anterior displacement of the joint meniscus was clearly visible in t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.154.3.3969490
更新日期:1985-03-01 00:00:00
abstract:PURPOSE:To assess how early pleural and/or parenchymal abnormalities consistent with asbestos exposure could be ascertained and to identify factors associated with progression. MATERIALS AND METHODS:Informed consent was obtained under an institutional review board-approved protocol. Multiple sequential chest radiograp...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.10091447
更新日期:2010-06-01 00:00:00
abstract:PURPOSE:To retrospectively evaluate imaging characteristics of surgically proved sublabral recesses and labral tears in the anterior portion of the acetabulum at magnetic resonance (MR) arthrography. MATERIALS AND METHODS:Institutional review board approval was obtained; informed consent was waived. The study included...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2492080137
更新日期:2008-12-01 00:00:00
abstract::Diagnostic quality of radiographs and adverse reactions associated with the use of metrizamide and iohexol as contrast agents in lumbar myelography were compared in a prospective randomized double blind study in 350 patients at seven centers. The contrast media were administered in comparable volumes at a concentratio...
journal_title:Radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1148/radiology.151.3.6371890
更新日期:1984-06-01 00:00:00
abstract::Computed tomography (CT) was performed in 42 patients with 49 clinically suspected tears of the posterior tibial tendon. Twenty-eight of the 49 suspected tears were subsequently surgically explored and repaired. Three patterns of tendon abnormalities were recognized on CT scans: type I-intact, hypertrophied, heterogen...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.167.2.3357960
更新日期:1988-05-01 00:00:00
abstract::Purpose To compare adverse events and survival outcomes, including cancer-specific survival and overall survival (OS), in patients with T1aN0M0 renal cell carcinoma (RCC) who are undergoing partial nephrectomy (PN), radical nephrectomy (RN), thermal ablation (TA), or active surveillance (AS). Materials and Methods Thr...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2018171407
更新日期:2018-07-01 00:00:00
abstract::Sixteen cases of histopathologically proved solitary rectal ulcer syndrome were encountered. Fifteen patients underwent barium enema study; in nine cases the findings--including rectal stricture, granularity of the mucosa, and thickened rectal folds-were nonspecific. In six cases the study was normal. All patients had...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.168.2.3393650
更新日期:1988-08-01 00:00:00
abstract::The authors report the first clinical experience in the United States with the highly water soluble, nonionic dimer (6:1 ratio) contrast medium iodixanol (5,5'-[(2-hydroxyl-1,3-propanediyl)bis(acetylimino)]bis[N,N' - bis(2,3dihydroxypropyl)-2,4,6-triodo1,3-benzenedicarbooxa mide]). Iodixanol has an osmolality less tha...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.183.2.1561360
更新日期:1992-05-01 00:00:00
abstract::A prone-angled compression radiographic view was compared with traditional radiographs in 17 patients with suspected Crohn disease. The angled view was clearly superior to the posteroanterior view in visualization of disease in the terminal ileum and small bowel and was superior to spot radiographs in six of 10 patien...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.187.2.8475310
更新日期:1993-05-01 00:00:00
abstract:PURPOSE:To prospectively compare therapeutic confidence in, patient outcomes (in terms of quality of life) after, and the costs of digital subtraction angiography (DSA) with those of multi-detector row computed tomographic (CT) angiography as the initial diagnostic imaging test in patients with peripheral arterial dise...
journal_title:Radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1148/radiol.2372040616
更新日期:2005-11-01 00:00:00
abstract::Deshpande et al (1) have shown that P-selectin-targeted microbubbles (MBs) can be used to monitor the expression of this molecule as a marker of inflammation in a murine model of inflammatory bowel disease (IBD). If these results can be reproduced in future clinical trials, contrast material–enhanced ultrasound (US) o...
journal_title:Radiology
pub_type: 评论,杂志文章
doi:10.1148/radiol.11112145
更新日期:2012-01-01 00:00:00
abstract:PURPOSE:To establish a protocol for credentialed pediatric radiology nurses, with radiologist supervision, to administer ketamine to induce sedation and analgesia during interventional radiologic procedures. MATERIALS AND METHODS:This study was conducted in two phases. The goal of the first phase was to develop a seda...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2252011786
更新日期:2002-11-01 00:00:00
abstract::Diffusion magnetic resonance (MR) imaging is evolving into a potent tool in the examination of the central nervous system. Although it is often used for the detection of acute ischemia, evaluation of directionality in a diffusion measurement can be useful in white matter, which demonstrates strong diffusion anisotropy...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiol.2452060445
更新日期:2007-11-01 00:00:00
abstract:PURPOSE:To evaluate the effect of a reduction in iodine dose by altering volume and/or concentration of contrast material on hepatic contrast enhancement (HCE) values during hepatic helical computed tomography (CT). MATERIALS AND METHODS:One hundred eleven patients were randomized into four contrast material protocols...
journal_title:Radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1148/radiology.197.1.7568860
更新日期:1995-10-01 00:00:00
abstract:PURPOSE:To assess and compare intimal and medial vascular damage caused by three mechanical wall-contact thrombectomy devices: Fogarty embolectomy catheter, Arrow-Trerotola peripheral thrombectomy device, and MTI-Castañeda over-the-wire brush. MATERIALS AND METHODS:Bilateral external iliac arteries of 15 canines were ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.219.1.r01ap36153
更新日期:2001-04-01 00:00:00
abstract::Ultrasound-guided compression repair (UGCR) of catheterization-related femoral artery injuries was evaluated as a possible new imaging-guided interventional procedure. Thirty-nine femoral artery injuries (35 pseudoaneurysms, four arteriovenous fistulas) were detected with color Doppler flow imaging in patients with en...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.178.3.1994400
更新日期:1991-03-01 00:00:00
abstract::The authors perform intravenous digital angiography of the abdomen with the patient in a prone position. As a result, gas is reduced in the transverse colon and small bowel and vascular detail in the image is not obscured. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.148.1.6856850
更新日期:1983-07-01 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 assess combined static-dynamic magnetic resonance (MR) urography in the evaluation of congenital urinary tract dilatation in infants and children. MATERIALS AND METHODS:Sixty-two patients with urinary tract dilatation underwent prospective examination with combined static-dynamic MR urography. A combination...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2243011207
更新日期:2002-09-01 00:00:00
abstract:PURPOSE:To compare the new "warp" sequence (slice-encoding metal artifact correction [SEMAC], view-angle tilting [VAT], and increased bandwidth) for the reduction of both through-plane and in-plane magnetic resonance (MR) artifacts with current optimized MR sequences in patients with total hip arthroplasty (THA). MATE...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12112408
更新日期:2012-10-01 00:00:00
abstract:PURPOSE:To characterize triangular fibrocartilage (TFC) defects in symptomatic and contralateral asymptomatic wrists. MATERIALS AND METHODS:Communicating and noncommunicating defects of the TFC were depicted on bilateral wrist arthrograms in 56 patients with unilateral wrist pain and without associated lesions of the ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.216.3.r00se06840
更新日期:2000-09-01 00:00:00
abstract:PURPOSE:To evaluate the diagnostic performance of gray-scale ultrasonography (US) and elastography in differentiating benign and malignant thyroid nodules. MATERIALS AND METHODS:This was an institutional review board-approved retrospective study with waiver of informed consent. A total of 703 solid thyroid nodules in ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11110839
更新日期:2012-03-01 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 evaluate the relative benefits and cost-effectiveness of treating iliac arterial occlusive disease with various interventions. MATERIALS AND METHODS:Cost-effectiveness was analyzed in a hypothetical cohort of patients with intermittent claudication caused by an iliac arterial stenosis. Primary stent placeme...
journal_title:Radiology
pub_type: 杂志文章,meta分析
doi:10.1148/radiology.208.3.9722840
更新日期:1998-09-01 00:00:00
abstract::The authors present a gastric mucosal biopsy technique with use of a nasogastric catheter and biopsy forceps after double-contrast upper gastrointestinal fluoroscopy in patients with clinical symptoms of dyspepsia. In 51 patients (18 men and 33 women, aged 27-73 years [mean, 46 years]), 136 aggregates (specimens compo...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.191.1.8134590
更新日期:1994-04-01 00:00:00
abstract:PURPOSE:To evaluate the frequency, risk factors, and clinical significance of aggressive intrasegmental recurrence (AIR) found after radiofrequency (RF) ablation for hepatocellular carcinoma (HCC). MATERIALS AND METHODS:Institutional review board approval was obtained for this retrospective study. Between March 2005 a...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.15141215
更新日期:2015-07-01 00:00:00
abstract::In a retrospective study of proved pseudoaneurysms (PAs) in 15 patients with transplanted organs (11 liver, three kidney, one pancreas), the results of computed tomography (CT), duplex sonography, and angiography were reviewed. Of the 15 cases of PA, eight occurred at the arterial anastomosis and seven were nonanastom...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.169.1.3047790
更新日期:1988-10-01 00:00:00
abstract:PURPOSE:To compare a glycosaminoglycan chemical exchange saturation transfer (gagCEST) imaging method, which enables sampling of the water signal as a function of the presaturation offset (z-spectrum) at 13 points in clinically feasible imaging times, with sodium 23 ((23)Na) magnetic resonance (MR) imaging in patients ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11101841
更新日期:2011-07-01 00:00:00