Abstract:
BACKGROUND:The meso-Rex bypass restores blood flow to the liver in patients with extrahepatic portal vein thrombosis. Stenosis occurs in some cases, causing the reappearance of portal hypertension. Complications such as thrombocytopenia present on a spectrum and there are currently no guidelines regarding a threshold for endovascular intervention. While Doppler ultrasound (US) is common for routine evaluation, magnetic resonance (MR) angiography with two-dimensional phase-contrast MRI (2-D PC-MRI) may improve the assessment of meso-Rex bypass function. OBJECTIVES:To determine the feasibility and utility of MR angiography with 2-D PC-MRI in evaluating children with meso-Rex bypass and to correlate meso-Rex bypass blood flow to markers of portal hypertension. MATERIALS AND METHODS:MR angiography and 2-D PC-MRI in meso-Rex bypass patients were retrospectively analyzed. Minimum bypass diameter was measured on MR angiography and used to calculate cross-sectional area. Meso-Rex bypass blood flow was measured using 2-D PC-MRI and divided by ascending aortic flow to quantify bypass flow relative to systemic circulation. Platelet and white blood cell counts were recorded. Correlation was performed between minimum bypass area, blood flow and clinical data. RESULTS:Twenty-five children (median age: 9.5 years) with meso-Rex bypass underwent MR angiography and 2-D PC-MRI. The majority of patients were referred to imaging given clinical concern for complications. Eighteen of the 25 patients demonstrated >50% narrowing of the bypass cross-sectional area. The mean platelet count in 19 patients was 127 K/μL. There was a significant correlation between minimum cross-sectional bypass area and bypass flow (rho=0.469, P=0.018) and between bypass flow and platelet counts (r=0.525, P=0.021). CONCLUSION:Two-dimensional PC-MRI can quantify meso-Rex bypass blood flow relative to total systemic flow. In a cohort of 25 children, bypass flow correlated to minimum bypass area and platelet count. Two-dimensional PC-MRI may be valuable alongside MR angiography to assess bypass integrity.
journal_name
Pediatr Radioljournal_title
Pediatric radiologyauthors
Stefek HA,Rigsby CK,Berhane H,Popescu AR,Rajeswaran S,Superina RAdoi
10.1007/s00247-018-4284-8subject
Has Abstractpub_date
2019-02-01 00:00:00pages
168-174issue
2eissn
0301-0449issn
1432-1998pii
10.1007/s00247-018-4284-8journal_volume
49pub_type
杂志文章abstract::Four children with Type I hepatorenal glycogen storage have been studied by barium enema. All showed strikingly similar changes of a smooth-walled, slightly narrow but normal length colon without any haustration. The findings simulated colitis but the patients had either mild diarrhea or no gastrointestinal complaints...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF01000116
更新日期:1975-03-20 00:00:00
abstract::Magnetic resonance (MR) images of 12 pathologically proven lesions of Langerhans cell histiocytosis (LCH) of bone were reviewed retrospectively. MR identified all lesions, three of which were not identified on plain radiographs. In all cases, MR showed greater abnormality than did plain radiographs. With one exception...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02017655
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND:The aberrant cervical thymus is an uncommon entity to be considered in the differential diagnosis of neck masses in children, so a preoperative diagnosis has rarely been made. OBJECTIVE:The purpose of this study was to assess the ultrasound features of aberrant cervical thymus and determine if recognition o...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470100468
更新日期:2001-07-01 00:00:00
abstract::Intracerebral paragangliomas are rare because of the lack of paraganglial cells in the cerebral tissue. We report a rare case of melanotic paraganglioma arising from the temporal horn of the lateral ventricle in a patient with prior Langerhans cell histiocytosis (LCH) treated with chemotherapy and radiation. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-007-0734-4
更新日期:2008-05-01 00:00:00
abstract::Treatment-related neurotoxicity is a potentially life-threatening clinical condition that can represent a diagnostic challenge. Differentiating diagnoses between therapy-associated brain injury and recurrent disease can be difficult, and the immediate recognition of neurotoxicity is crucial to providing correct therap...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-016-3750-4
更新日期:2017-05-01 00:00:00
abstract::Rib fractures are a common skeletal manifestation of non-accidental injury (NAI) in infants and young children and are generally considered to be highly specific for abuse. There are, however, relatively few descriptions of fractures involving the costochondral junctions in NAI. We present three children (two boys, on...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470050436
更新日期:1998-09-01 00:00:00
abstract::Ultrasound is an excellent tool to evaluate many pediatric musculoskeletal conditions. It may be used for both diagnosis and for guidance for therapeutic procedures. With US, the radiologist can readily evaluate the contralateral side for comparison. No sedation is typically required and ionizing radiation is avoided....
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-012-2599-4
更新日期:2013-03-01 00:00:00
abstract:BACKGROUND:Sonography has been used to predict pneumatic reduction outcome in children with intussusception. OBJECTIVE:To assess the prognostic significance of fluid between the intussusceptum and intussuscepiens with respect to reduction outcome, lead point or necrosis. MATERIALS AND METHODS:Sonograms of children wi...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-010-1931-0
更新日期:2011-06-01 00:00:00
abstract::A young woman died following bronchography. The bilateral bronchogram done under general anesthesia without fluoroscopic control was associated with extensive small airway filling or "alveolarization" of the contrast medium. The oily Dionosil used had been heated in an autoclave. Experiments showed that the viscosity ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02387657
更新日期:1989-01-01 00:00:00
abstract:BACKGROUND:No normal measurements or specific size criteria have been described for cervical lymph nodes in children. OBJECTIVE:To determine the normal measurements of cervical lymph nodes in children on CT. MATERIALS AND METHODS:We included 142 children (ages 1-17 years) who underwent cervical CT examination after h...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-019-04595-y
更新日期:2020-04-01 00:00:00
abstract::Three very low birth weight infants, treated with frusemide for broncho-pulmonary dysplasia are described. They all developed medullary nephrocalcinosis identifiable by real time ultrasound. The sonographic findings of diffuse medullary hyper-echogenicity appears to be specific for nephrocalcinosis. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02389002
更新日期:1988-01-01 00:00:00
abstract::High-attenuation mucus plugging is a rare finding in both adults and children. When it occurs, the field of differential diagnoses is typically quite small and includes acute hemorrhage, aspiration of radiodense material, and allergic bronchopulmonary aspergillosis (ABPA). The last of these three diagnoses is the most...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-007-0471-8
更新日期:2007-06-01 00:00:00
abstract::A case of heterotopic gastric mucosa in the common bile duct, cystic duct and gallbladder is reported in a 3-year-old girl with abdominal pain and jaundice. Abdominal US and CT showed dilatation of the biliary tree and a well-defined mass in the common bile duct that narrowed its lumen. The gallbladder was contracted ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-002-0718-3
更新日期:2003-02-01 00:00:00
abstract::Magnetic resonance imaging (MRI) often provides better visualization of bone marrow abnormalities than computed tomography (CT) or fluoroscopy, but bone biopsies are usually performed using conventional CT or, more recently, C-arm CT guidance. Biopsies of bone lesions solely visible on MRI are often challenging to loc...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-017-3995-6
更新日期:2018-02-01 00:00:00
abstract:BACKGROUND:Percutaneous arterial closure devices have increasingly entered clinical practice to assist in achieving femoral arterial access site hemostasis. Prior studies have demonstrated the safety and efficacy of several arterial closure devices in adults. OBJECTIVE:To evaluate the efficacy of using an arterial clo...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-012-2606-9
更新日期:2013-06-01 00:00:00
abstract:: ...
journal_title:Pediatric radiology
pub_type: 评论,信件
doi:10.1007/s00247-018-4234-5
更新日期:2019-01-01 00:00:00
abstract::The congenital subglottic hemangioma typically appears as an asymmetric subglottic narrowing or mass on frontal neck radiographs. Therefore, soft tissue neck radiography has been advocated as a definitive non-operative approach for diagnosing these lesions. However, we have noted similar asymmetric subglottic narrowin...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02388997
更新日期:1988-01-01 00:00:00
abstract::Sporotrichosis in children is rare, and its osteoarticular form is very unusual. Disseminated forms are described mostly in immunocompromised patients. We report a case of a 5-year-old immunocompetent boy with multiple suppurated cutaneous lesions that progressed to polyarthritis of the hands and feet. Radiographic im...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-015-3299-7
更新日期:2015-08-01 00:00:00
abstract::In a previous paper, the normal sonographic anatomy of the larynx has been described. The pathological findings of this method, its advantages and its drawbacks are now discussed and compared to endoscopy and plain films. It appears to be a very interesting method for functional disorders and space-occupying lesions. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02011037
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:Excessive cervical flexion-extension accompanying mild to severe impact injuries can lead to C2 synchondrosal fractures in young children. OBJECTIVE:To characterize and classify C2 synchondrosal fracture patterns. MATERIALS AND METHODS:We retrospectively reviewed imaging and medical records of children who...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-014-3224-5
更新日期:2015-06-01 00:00:00
abstract:BACKGROUND:Transient synovitis is the most common cause of acute hip pain in children. However, MR imaging findings in transient synovitis and the role of MR imaging in differentiating transient synovitis from septic arthritis have not been fully reported. OBJECTIVE:To describe the MR findings of transient synovitis a...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-006-0289-9
更新日期:2006-11-01 00:00:00
abstract::Pediatric blunt scrotal trauma is most often the consequence of sports injury and presents a diagnostic challenge because swelling and pain make a scrotal physical exam difficult. US with color flow and duplex Doppler is the first-line imaging modality with the goal of accurate and timely diagnosis of injury requiring...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-016-3600-4
更新日期:2016-06-01 00:00:00
abstract:PURPOSE:To evaluate (131)I-MIBG scintigraphic localization of xenotransplanted and spontaneously arising neuroblastomas in murine models of high-risk neuroblastoma. METHODS:Neuroblastoma xenografts were created by inoculation of human neuroblastoma cell suspensions into the subcutaneous flanks of athymic nude mice. In...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-003-1006-6
更新日期:2003-10-01 00:00:00
abstract::We present two patients with airway obstruction due to supraglottic swelling; one was caused by a brown spider bite on an ear (loxoscelism) and the other from eating buffalo fish. In the latter patient it was likely due to scrombroid poisoning, a histamine-like reaction, but may have been an anaphylaxic reaction. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02015631
更新日期:1991-01-01 00:00:00
abstract::Thirteen newborns with lethal short rib-polydactyly (SRP) have been reviewed, 11 with SRP type III (Verma-Naumoff) and 2 with SRP type II (Majewski). In the former group there were three sets of siblings. The excess of males with SRP type III (Verma-Naumoff) is confirmed in this present study. A high frequency of phen...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02388282
更新日期:1987-01-01 00:00:00
abstract::Cancer predisposition syndromes increase the incidence of tumors during childhood and are associated with significant morbidity and mortality. Imaging is paramount for ensuring early detection of neoplasms, impacting therapeutic interventions and potentially improving outcome. While conventional imaging techniques inv...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-019-04431-3
更新日期:2019-10-01 00:00:00
abstract::Osteopathia striata with cranial sclerosis (OS-CS) is a specific bone dysplasia manifested by hypertelorism, flat nasal bridge, frontal bossing, large head, hypoplastic maxilla, palate anomalies, chronic otitis media, hearing deficits, nasal obstruction, and neurological changes of deafness, facial palsy, ophthalmople...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/BF02017665
更新日期:1994-01-01 00:00:00
abstract::Narrow duplicated internal auditory canal (IAC) is a rare malformation of the temporal bone that is associated with ipsilateral congenital sensorineural hearing loss. This may be an isolated finding or a part of a syndrome. Radiological examination should demonstrate aplasia or hypoplasia of the neural components of t...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-005-1547-y
更新日期:2005-12-01 00:00:00
abstract::Peripheral primitive neuroectodermal tumour in the kidney is a rare entity with high malignant potential. The distinctive demographic, clinical and radiological findings, as described in the present case, should suggest this aggressive tumour in the differential diagnosis of renal neoplasms in adolescents. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470000392
更新日期:2001-02-01 00:00:00
abstract::Four hundred and fifty-four kidneys were evaluated by real time ultrasound for appearance of renal cortical echogenecity, medullary pyramids and central sinus echoes. These renal parameters were correlated with age in 227 patients ranging in age from 0-15 years. The renal parenchymal echogenicity was observed to chang...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02388162
更新日期:1987-01-01 00:00:00