Abstract：
:Many pitfalls result from the limited ability of Doppler instruments to record low flow velocities. These include a misleading resistance or pulsatility index due to diastolic cut-off and taking no signal to equal no flow assuming that no signal means no flow. Comparison of actual flow velocities as measured in an in-vitro system (range: 0.8 to 3.4 cm/s) with the lowest recordable spectral or colour signals in 3 Duplexscanners showed that reduced sensitivity to low flow velocities is not only dependent on the high pass ("wall") filter setting, Doppler frequency or angle of incidence, but also on factors such as vessel diameter, impairing the signal to noise ratio. Characteristic errors of colour flow mapping (misleading vascular anatomy, imitation of pathological findings, erroneous exclusion of flow) are due to partial volume effect, limited temporal and velocity resolution, changing angle of incidence, aliasing and failure to detect low flow velocities.
journal_name
Pediatr Radioljournal_title
Pediatric radiologyauthors
Winkler P,Helmke K,Mahl Mdoi
10.1007/BF02013161subject
Has Abstractpub_date
1990-01-01 00:00:00pages
304-10issue
5eissn
0301-0449issn
1432-1998journal_volume
20pub_type
杂志文章abstract：:A variety of problems can arise while performing MR arthrography of the shoulder. These have been well documented in the literature and range from improper patient selection to errors in technique or in the choice of imaging sequences. We present a rare case of inadvertent, painless intraosseous injection of dilute ga...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-008-0828-7
更新日期：2008-07-01 00:00:00
abstract：BACKGROUND:Osteomyelitis is a challenging diagnosis for clinicians, particularly in very young children. At our institution, the magnetic resonance imaging (MRI) protocol in suspected osteomyelitis for children 5 years of age or younger includes a large field of imaging regardless of the clinical site of concern. OBJE...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-018-4317-3
更新日期：2019-03-01 00:00:00
abstract：BACKGROUND:It has been suggested that increased hepatic and intramuscular fat is associated with insulin resistance, and that increased pancreatic fat is related to impaired insulin secretion. OBJECTIVE:We postulated that in obese nondiabetic teenagers insulin levels would be directly related to increases in intramusc...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-005-1413-y
更新日期：2005-06-01 00:00:00
abstract：:Basilar impression (BI) assessed by either plain lateral skull radiograph or computerized tomography (CT) sagittal reconstruction of the craniocervical junction is a common finding occurring in 25% of subjects with osteogenesis imperfecta (OI). It appears to occur with highest frequency in a group of subjects with OI ...
journal_title：Pediatric radiology
pub_type： 杂志文章,评审
doi：10.1007/BF02011910
更新日期：1994-01-01 00:00:00
abstract：:We sonographically investigated the internal jugular veins of 40 children who had undergone catheterization of the vein (group A: silastic catheter, n = 24; group B: polyurethane catheter, n = 16) in the neonatal period. The average age at catheter implantation was 43 +/- 73 days, the average birthweight 2414 +/- 1145...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/BF02012737
更新日期：1994-01-01 00:00:00
abstract：:Trichorhinophalangeal syndrome type II is a rare genetic disorder with the few published case reports mainly reporting the radiographic skeletal manifestations. There are no published imaging reports of long bone cysts involving multiple bones in this condition. We report a unique case of bone cysts involving multiple...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-017-3839-4
更新日期：2017-07-01 00:00:00
abstract：:Systemic hypertension after renal transplantation in children is frequent, occurring in 85% of the cases and may be the cause of severe neurologic complications. This can be due to multiple factors such as: rejection, recurrence of initial disease, steroid, etc. ... Among those factors, renal transplant artery stenosi...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/BF02387633
更新日期：1989-01-01 00:00:00
abstract：:Ferumoxytol is an ultra-small superparamagnetic iron oxide (USPIO) particle that is FDA-approved for parenteral treatment of iron deficiency anemia in adults with chronic kidney disease. Because of the association between gadolinium-based contrast agents and nephrogenic systemic fibrosis in patients with severe chroni...
journal_title：Pediatric radiology
pub_type： 杂志文章,评审
doi：10.1007/s00247-016-3605-z
更新日期：2016-08-01 00:00:00
abstract：BACKGROUND:Pyeloplasty is an established treatment for pelviureteric junction (PUJ) obstruction. The postoperative change in the size of the renal pelvis and the kidney parenchyma are variable. OBJECTIVE:To document the changes in renal pelvic size and renal parenchymal thickness following pyeloplasty and to establish...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s002470050342
更新日期：1998-04-01 00:00:00
abstract：:Fibroblast growth factor receptor mutations cause some of the main short-limb skeletal dysplasias and craniosynostosis syndromes, including achondroplasia, hypochondroplasia, thanatophoric dysplasia, Apert syndrome, Crouzon syndrome, Pfeiffer syndrome, and Jackson-Weiss syndrome. Much work remains to be done in unrave...
journal_title：Pediatric radiology
pub_type： 杂志文章,评审
doi：10.1007/s002470050165
更新日期：1997-05-01 00:00:00
abstract：:Orbital sonography with color-flow Doppler imaging is a relatively new technology with significant application in the pediatric patient. This review stresses the primary indications for pediatric ophthalmic ultrasound and also discusses those instances where the use of ultrasound supplements other imaging studies. ...
journal_title：Pediatric radiology
pub_type： 杂志文章,评审
doi：10.1007/BF01372106
更新日期：1996-01-01 00:00:00
abstract：BACKGROUND:Artificial intelligence models have been successful in analyzing ordinary photographic images. One type of artificial intelligence model is object detection, where a labeled bounding box is drawn around an area of interest. Object detection can be applied to medical imaging tasks. OBJECTIVE:To demonstrate o...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-020-04895-8
更新日期：2021-01-05 00:00:00
abstract：:It is essential to diagnose thyroid dysfunction at an early stage because congenital hypothyroidism (CH) represents one of the most common preventable causes of delayed physical and psychological development, including mental retardation. US evaluates the shape of the thyroid gland. CT and scintigraphic examinations d...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-004-1145-4
更新日期：2004-07-01 00:00:00
abstract：:Ultrasound is the primary imaging modality of the pediatric female pelvis and is often requested to evaluate girls with pelvic or abdominal pain or abnormal bleeding. The US interpretation can help guide the clinician toward medical or surgical management. Here we discuss the normal US anatomy of the female pelvis and...
journal_title：Pediatric radiology
pub_type： 杂志文章,评审
doi：10.1007/s00247-017-3843-8
更新日期：2017-08-01 00:00:00
abstract：BACKGROUND:Takayasu's arteritis (TA) is a chronic idiopathic inflammatory disease affecting primarily the aorta, its proximal branches and the pulmonary arteries. OBJECTIVES:To retrospectively review the angiograms of children with TA so as to describe the patterns of vascular involvement. PATIENTS AND METHODS:Twenty...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-002-0817-1
更新日期：2003-04-01 00:00:00
abstract：:Fetus in fetu is a rare pathological condition, presenting as a congenital tumor. It consists of a malformed parasitic twin that is found within the body of its sibling. Less than 70 cases have been reported and in most of them a definite diagnosis was only made during surgery. We present a case with two fetuses in th...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/BF02012747
更新日期：1994-01-01 00:00:00
abstract：:We present a child with a rapidly growing mass and lytic skull lesion that on pathologic evaluation was diagnosed as cranial fasciitis. This disease entity is not widely known by radiologists, and should be included in the differential diagnosis of lytic skull lesions. ...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/BF02011971
更新日期：1993-01-01 00:00:00
abstract：BACKGROUND:Magnetic resonance imaging (MRI) usage has anecdotally increased due to the principles of ALARA and the desire to Image Gently. Aside from a single abstract in the emergency medicine literature, pediatric emergency department MRI usage has not been described. OBJECIVE:Our objective was to determine whether ...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-016-3764-y
更新日期：2017-03-01 00:00:00
abstract：:The accessory parotid gland, a little-known and seldom-mentioned anatomical variant, is a nodule of normal salivary tissue separate from the main parotid gland, located on the masseter muscle and connected to the Stensen duct at that level. It can be the site of both congenital and acquired lesions. ...
journal_title：Pediatric radiology
pub_type： 杂志文章,评审
doi：10.1007/s00247-005-0034-9
更新日期：2006-01-01 00:00:00
abstract：:A 15-year-old boy with caecal haematoma required a right hemicolectomy due to development of small bowel obstruction and near caecal perforation having presented several days after an episode of minor trauma. The position of the caecum between intraperitoneal and extraperitoneal bowel requires special treatment consid...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-013-2754-6
更新日期：2014-01-01 00:00:00
abstract：BACKGROUND:Pulmonary infection with SARS-CoV-2 virus (severe acute respiratory syndrome coronavirus 2; COVID-19) has rapidly spread worldwide to become a global pandemic. OBJECTIVE:To collect paediatric COVID-19 cases worldwide and to summarize both clinical and imaging findings in children who tested positive on poly...
journal_title：Pediatric radiology
pub_type： 杂志文章,多中心研究
doi：10.1007/s00247-020-04747-5
更新日期：2020-09-01 00:00:00
abstract：BACKGROUND:Fetal MRI can be performed in the second and third trimesters. During this time, the fetal brain undergoes profound structural changes. Interpretation of appropriate development might require comparison with normal age-based models. Consultation of a hard-copy atlas is limited by the inability to compare mul...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-009-1411-6
更新日期：2010-02-01 00:00:00
abstract：BACKGROUND:Traditionally, every patient with an acute scrotum needed surgical exploration for definitive exclusion of testicular torsion. OBJECTIVE:In this study, we aimed to evaluate the improved accuracy in clinical diagnosis with colour Doppler Ultrasonography (US) added to normal clinical assessment. MATERIALS AN...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s00247-005-1411-0
更新日期：2005-06-01 00:00:00
abstract：BACKGROUND:Adrenocortical carcinoma (ACC), a tumor that is rare among children, causes clinically evident hormonal disturbances. Imaging methods are used to stage disease and to plan surgical resection. OBJECTIVE:To describe the findings of the various imaging methods used to evaluate ACC. MATERIALS AND METHODS:We re...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s002470050013
更新日期：2000-01-01 00:00:00
abstract：:The Computed Tomography (CT) appearance of a pelvic haemangioma involving the rectum in two children, one with the Vater association and one with Klippel-Trenaunay syndrome, is described. Both cases complained of painless rectal bleeding and the diagnosis was suggested by the presence of pelvic phleboliths on the plai...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/BF02387639
更新日期：1989-01-01 00:00:00
abstract：:Hyperthyroidism occurs secondary to overproduction of thyroid hormone by the thyroid gland. This condition can have rather serious effects on children, and thus timely diagnosis and treatment are of utmost importance. Imaging is quite useful in the management of children with hyperthyroidism. In addition to determinin...
journal_title：Pediatric radiology
pub_type： 杂志文章,评审
doi：10.1007/s00247-013-2707-0
更新日期：2013-10-01 00:00:00
abstract：:A cardiac fibroma in a newborn is reported. The infant had skeletal stigmata of Gorlin's syndrome and the mother had known Gorlin's syndrome. ...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/BF02011059
更新日期：1991-01-01 00:00:00
abstract：:Pericardial involvement in chronic granulomatous disease (CGD) is very rare. We present two children with known CGD and pericardial effusions in whom no microbial cause for the effusions was found. ...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s002470050704
更新日期：1999-11-01 00:00:00
abstract：:We describe a 4-year-old girl with an inflammatory pseudotumour of the pancreas, which was preceded by varicella-zoster infection. Inflammatory pseudotumour may involve a variety of tissues, the lungs and liver being typical sites of predilection. Imaging and laboratory tests are nonspecific, and for this reason the d...
journal_title：Pediatric radiology
pub_type： 杂志文章
doi：10.1007/s002470000331
更新日期：2000-11-01 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
