Abstract:
PURPOSE:To evaluate the ability to depict anatomy and complications of renal vascular transplant with unenhanced magnetic resonance (MR) angiography with spatial labeling with multiple inversion pulses (SLEEK) and to compare the results with color Doppler (CD) ultrasonography (US), digital subtraction angiography (DSA), and intraoperative findings. MATERIALS AND METHODS:This study was approved by the institutional review board, and written informed consent was received before examination. Seventy-five patients who underwent renal transplantation were examined with unenhanced MR angiography with SLEEK and CD US. DSA was performed in 15 patients. Surgery was performed in eight patients. The ability of SLEEK to show transplant renal vascular anatomy and complications was evaluated by two experienced radiologists who compared the results with CD US, DSA, and intraoperative findings. RESULTS:Patients successfully underwent SLEEK MR angiography. Transplant renal vascular anatomy was assessed in 87 arteries and 78 veins. Renal vascular complications from transplantation were diagnosed in 23 patients, which included 14 with arterial stenosis, three with arterial kinking, two with arteriovenous fistulas, two with venous stenosis, one with pseudoaneurysms, and one with fibromuscular dysplasia. Three patients had two renal transplants and nine patients had nine accessory renal arteries. More accessory renal arteries were detected with SLEEK than with CD US. Correlation was excellent between the stenosis degree with SLEEK and DSA (r = 0.96; P < .05). For those with significant artery stenosis (>50% narrowing) proved with DSA (n = 7) or surgery (n = 3), positive predictive value was 91% (10 of 11). CONCLUSION:Unenhanced MR angiography with SLEEK preliminarily proved to be a reliable diagnostic method for depiction of anatomy and complications of renal vascular transplant. It may be used for evaluation of patients with renal transplant, and in particular for those with renal insufficiency.
journal_name
Radiologyjournal_title
Radiologyauthors
Tang H,Wang Z,Wang L,Hu X,Wang Q,Li Z,Li J,Meng X,Wang Y,Hu Ddoi
10.1148/radiol.14131800subject
Has Abstractpub_date
2014-06-01 00:00:00pages
879-87issue
3eissn
0033-8419issn
1527-1315journal_volume
271pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::A series of 100 consecutive occult mammographic abnormalities were localized with a curved-end retractable wire system. A true-positive rate of 24% and a failure rate of 4% for initial excision were found. The pitfalls and advantages of this new needle-wire breast localizer are presented. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.161.2.3763930
更新日期:1986-11-01 00:00:00
abstract::The effects of increasing single selective doses of prostaglandin E1 (PGE1) on superior mesenteric arterial flow and portal and systemic blood pressures were studied in dogs to assess its value as a vasodilatory agent for pharmacoangiography. PGE1 consistently increased blood flow, with an average increase of 187%, bu...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/116.1.207
更新日期:1975-07-01 00:00:00
abstract:PURPOSE:To determine whether liver tumor detection is increased by acquiring multiple dynamic arterial phase and portal venous phase magnetic resonance (MR) images. MATERIALS AND METHODS:Dynamic MR imaging was performed in 205 patients at 1.5 T with use of a fast spoiled gradient-echo technique (repetition time, 9-12 ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.201.2.8888220
更新日期:1996-11-01 00:00:00
abstract::One hundred patients whose standard endoscopic retrograde cholangiographic studies gave poor visualization of the biliary tract were investigated using a balloon catheter introduced into the common bile duct by duodenoscopy to block contrast material leakage. Full diagnostic visualization was obtained in 90 patients, ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.159.1.3952330
更新日期:1986-04-01 00:00:00
abstract::A radionuclide study using technetium-99m-labelled milk feeding is described for the detection of gastroesophageal reflux and aspiration in children. A comparison of findings in 39 patients referred for both radiographic and radionuclide studies showed that barium studies were positive in 25.6% and radionuclide studie...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/131.2.479
更新日期:1979-05-01 00:00:00
abstract::Purpose To evaluate the impact of accountable care organizations (ACOs) on use of screening mammography in the Medicare Shared Savings Program (MSSP), the largest value-based reimbursement program in U.S. HISTORY:Materials and Methods Institutional review board approval was waived, as the study used publicly availabl...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016160554
更新日期:2017-02-01 00:00:00
abstract:PURPOSE:To compare the accuracy of four breath-hold magnetic resonance (MR) imaging sequences to establish the most effective superparamagnetic iron oxide (SPIO)-enhanced sequence for detection of colorectal hepatic metastases. MATERIALS AND METHODS:Thirty-one patients with colorectal hepatic metastases underwent T1-w...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2283020376
更新日期:2003-09-01 00:00:00
abstract::From July 1993 through June 1994, the authors performed 42 ultrasound (US)-guided core biopsies with use of a coaxial technique in which a 14- or 15-gauge core biopsy needle was passed through a 12-gauge introducer needle. This technique proved to be effective in all 42 biopsies. Use of the coaxial technique decreased...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.194.2.7824740
更新日期:1995-02-01 00:00:00
abstract::Purpose To evaluate an objective computed tomographic (CT) criterion for distinguishing between part-solid (PS) and nonsolid (NS) lung nodules. Materials and Methods This study received institutional review board approval, and patients gave informed consent. Preoperative CT studies in all patients who underwent surger...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017170044
更新日期:2018-01-01 00:00:00
abstract::In nine neonates, spontaneous regression of a multicystic dysplastic kidney (MCDK) was witnessed by means of repeated ultrasound (US) examinations. In three of these patients, the diagnosis was made in utero. Follow-up examinations at the ages of 3, 5, and 32 weeks post-partum showed what would have been called unilat...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.161.1.3532180
更新日期:1986-10-01 00:00:00
abstract::Ultrasonography may be useful as a screening test for carotid body tumors before arteriography. Such tumors are seen as solid, well-circumscribed, weakly echogenic masses located at the carotid bifurcation. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/132.2.409
更新日期:1979-08-01 00:00:00
abstract::Background Several changes have been made to the revised 2017 international consensus guidelines for management of pancreatic intraductal papillary mucinous neoplasms (IPMNs). However, the diagnostic performance is yet to be verified. Purpose To evaluate the revised guidelines for predicting malignant potential of pan...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2019190144
更新日期:2019-10-01 00:00:00
abstract::Obliteration of varicoceles in men with infertility has been shown to improve semen quality and increase fertility rates. Many current techniques involve complex procedures and specialized equipment and may be associated with adverse effects. Transcatheter thermal vessel occlusion was utilized for spermatic vein oblit...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.148.1.6856870
更新日期:1983-07-01 00:00:00
abstract::The measured optical density of single-emulsion films depends on the film orientation. The orientation of the emulsion influences the amount of scattered light entering the detector. It is suggested that this measurement be done with the emulsion side facing the light detector. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/124.2.522
更新日期:1977-08-01 00:00:00
abstract::Cranial magnetic resonance (MR) imaging was performed in 38 pregnant and postpartum women and 30 nonpregnant age-matched control subjects to establish standards for pituitary gland size and shape during this period. Gland height and infundibulum width were measured on midline T1-weighted sagittal images. Gland convexi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.181.2.1924800
更新日期:1991-11-01 00:00:00
abstract:PURPOSE:To determine whether addition of quality measure (QM) of shear-wave (SW) velocity (Vs) estimation can increase SW elastography sensitivity for breast cancer. MATERIALS AND METHODS:With written informed consent, this institutional review board-approved, HIPAA-compliant study included 143 women (mean age, 48.5 y...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14132404
更新日期:2015-04-01 00:00:00
abstract::To explore the usefulness of intraluminal ultrasound (US) for diagnostic imaging of the female urethra, 22 female patients with different degrees of urinary incontinence and 10 female patients with normal continence underwent examination by means of a 20-MHz intravascular US system. Contiguous sections were used for t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.187.1.8451400
更新日期:1993-04-01 00:00:00
abstract::Magnetic resonance (MR) images of 19 patients with histologically proved gallbladder carcinoma were retrospectively reviewed to determine the appearance of the primary tumor, and to assess the ability of MR imaging to demonstrate the various modes of tumor spread beyond the gallbladder. The primary tumor, as well as t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.174.1.2294540
更新日期:1990-01-01 00:00:00
abstract::The authors examined 10 healthy male subjects with dynamic computed tomography to determine normal dynamic and expiratory findings. In both the supine and prone positions, the average increase in lung attenuation during exhalation was found to be significantly greater in dependent lung regions than in nondependent lun...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.186.1.8416550
更新日期:1993-01-01 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 assess the prevalence and degree of lumbosacral transitional vertebrae (LSTV) in the Osteoarthritis Initiative (OAI) cohort, to assess whether LSTV correlates with low back pain (LBP) and buttock pain, and to assess the reproducibility of grading LSTV. MATERIALS & METHODS:Institutional review board approval...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12112747
更新日期:2012-11-01 00:00:00
abstract::From 1962 to 1984, 13 patients with juvenile nasopharyngeal angiofibroma (JNA) were treated with megavoltage radiation therapy. Follow-up ranged from 40 to 255 months (median, 136 months). Two patients received radiation therapy as the initial treatment; the other 11 patients had undergone unsuccessful previous surgic...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.176.1.2162070
更新日期:1990-07-01 00:00:00
abstract::A mass associated with the gastrointestinal tract was detected by sonography in 33 patients. Etiologies included primary or metastatic tumor; intussusception; inflammation secondary to bowel infarction, pancreatitis, or irradiation; and a dilated, fluid-filled gut related to retained gastric contents, obstruction, ile...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.135.1.7360950
更新日期:1980-04-01 00:00:00
abstract::The authors developed a free-breathing black-blood coronary magnetic resonance (MR) angiographic technique with a potential for exclusive visualization of the coronary blood pool. Results with the MR angiographic technique were evaluated in eight healthy subjects and four patients with coronary disease identified at c...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.219.1.r01mr07278
更新日期:2001-04-01 00:00:00
abstract::The authors retrospectively evaluated 12 patients with congenital (neonatal) neuroblastoma to assess the utility of newer imaging modalities. Findings at prenatal ultrasound (US), performed in four patients, were nonspecific (hydramnios and hydrops fetalis) in two and consistent with a suprarenal mass (one solid, one ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.175.2.2183280
更新日期:1990-05-01 00:00:00
abstract::Osteoid osteoma is a benign, self-limited tumor of bone that usually requires surgical excision for relief of pain and to prevent long-term consequences. Radio-frequency electrodes have been successfully and safely used to ablate small areas of the central nervous system and to perform ablation elsewhere in the body. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.183.1.1549690
更新日期:1992-04-01 00:00:00
abstract::Purpose To determine if the allergic-like breakthrough reaction rate of intravenous corticosteroid prophylaxis administered 5 hours before contrast material-enhanced computed tomography (CT) is noninferior to that of a traditional 13-hour oral regimen. Materials and Methods Institutional review board approval was obta...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017170107
更新日期:2017-11-01 00:00:00
abstract::While invasive imaging techniques, especially selective conventional coronary angiography, will remain vital to planning and guiding catheter-based and surgical treatment of significantly stenotic coronary lesions, the comprehensive and serial assessment of asymptomatic or minimally symptomatic stages of coronary arte...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiol.2321021803
更新日期:2004-07-01 00:00:00
abstract:PURPOSE:To quantitatively evaluate and validate a two-phase helical computed tomographic (CT) protocol for evaluation of pancreatic tumors. MATERIALS AND METHODS:Twenty-seven patients with pathologically proved pancreatic adenocarcinomas prospectively underwent two-phase CT examination with helical acquisition during ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.199.3.8637990
更新日期:1996-06-01 00:00:00
abstract::The authors review their experience with percutaneous endopyelotomy in the treatment of ureteropelvic junction obstruction. Twenty-four patients with symptoms of ureteropelvic junction obstruction underwent excretory urography, which revealed nonspecific narrowing in several cases. Angiography was performed in 14 pati...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.171.2.2704820
更新日期:1989-05-01 00:00:00