Abstract:
BACKGROUND:Size-specific dose estimate is gaining increased acceptance as the preferred index of CT dose in children. However it was developed based on non-clinical data. OBJECTIVE:To compare the accuracy of size-specific dose estimate (SSDE) based on geometric and body weight measures in pediatric chest and abdomen CT scans, versus the more accurate [Formula: see text] (mean SSDE based on water-equivalent diameter). MATERIALS AND METHODS:We retrospectively identified 50 consecutive children (age <18 years) who underwent chest CT examination and 50 children who underwent abdomen CT. We measured anteroposterior diameter (DAP) and lateral diameter (DLAT) at the central slice (of scan length) of each patient and calculated DAP+LAT (anteroposterior diameter plus lateral diameter) and DED (effective diameter) for each patient. We calculated the following in each child: (1) SSDEs based on DAP, DLAT, DAP+LAT, DED, and body weight, and (2) SSDE based on software calculation of mean water-equivalent diameter ([Formula: see text] adopted standard within our study). We used intraclass correlation coefficient (ICC) and Bland-Altman analysis to compare agreement between the SSDEs and [Formula: see text]. RESULTS:Gender and age distribution were similar between chest and abdomen CT groups; mean body weight was 37 kg for both groups, with ranges of 6-130 kg (chest) and 8-107 kg (abdomen). SSDEs had very strong agreement (ICC>0.9) with [Formula: see text]. SSDEs based on DLAT had 95% limits of agreement of up to 43% with [Formula: see text]. SSDEs based on other parameters (body weight, DAP, DAP+LAT, DED) had 95% limits of agreement of up to 25%. CONCLUSION:Differences between SSDEs calculated using various indications of patient size (geometric indices and patient weight) and the more accurate [Formula: see text] calculated using proprietary software were generally small, with the possible exception for lateral diameter, and provide acceptable dose estimates for body CT in children.
journal_name
Pediatr Radioljournal_title
Pediatric radiologyauthors
Karmazyn B,Ai H,Klahr P,Ouyang F,Jennings SGdoi
10.1007/s00247-016-3604-0subject
Has Abstractpub_date
2016-08-01 00:00:00pages
1234-40issue
9eissn
0301-0449issn
1432-1998pii
10.1007/s00247-016-3604-0journal_volume
46pub_type
杂志文章abstract::We present a case of herpes simplex encephalitis in an 8-year-old girl, in whom hyperintensity was detected on diffusion-weighted imaging (DWI) while conventional MRI sequences were normal 1 week after the onset of neurological symptoms. This case is rare in that a child beyond the neonatal period with focal herpes si...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-007-0577-z
更新日期:2007-11-01 00:00:00
abstract::The diagnosis of Wilms' tumor is usually made by excretory urography after the patient presents with an abdominal mass. A diagnosis prior to the appearance of an obvious mass might result in an improved cure rate and less morbid therapy. The three cases described illustrate the difficulty in making an earlier diagnosi...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF01000118
更新日期:1975-03-20 00:00:00
abstract::The spectrum of congenital anomalies of the male urethra is presented. The embryologic basis of each anomaly, when known, is discussed. Clinical and imaging features of each entity are presented. ...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-007-0495-0
更新日期:2007-09-01 00:00:00
abstract::While patient and family-centered care (PFCC) is currently a hot topic in medicine, it has long been a specific focus of pediatrics. The concept of PFCC includes a change in culture where physicians and patients move away from paternalism and instead view patients and families as partners in care. Although there are m...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-020-04742-w
更新日期:2020-10-01 00:00:00
abstract::A 2 1/2-year-old boy presented with a large abdominal mass that proved to be a hepatic mesenchymal hamartoma. Radiologic studies included ultrasound and MRI which correlated well with pathologic findings. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02020176
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND:Intestinal blood-flow changes after birth. Objective. To elucidate the factors influencing intestinal blood-flow velocity in preterm infants during the early neonatal period. MATERIALS AND METHODS:We measured blood-flow velocity in the superior mesenteric artery by pulsed Doppler US in 44 uncomplicated infa...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470050621
更新日期:1999-06-01 00:00:00
abstract::Cranial ultrasound on neonatal intensive care units is generally performed by intensive care physicians, but radiologists often provide this crucial bedside test to children on specialist paediatric cardiac intensive care units. On a paediatric cardiac intensive care unit, complex congenital cardiac conditions are com...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-019-04603-1
更新日期:2020-06-01 00:00:00
abstract::Castleman's disease is a benign lymphoproliferative disorder characterised by enlarged hyperplastic lymph nodes. It is rare in children and usually presents as localised disease. Subpectoral involvement has not been previously described in multicentric Castleman's disease in children. We present the CT, US and Doppler...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-003-0947-0
更新日期:2003-08-01 00:00:00
abstract::A 10-year-old girl presented with a cerebral malignant ectomesenchymoma (MEM), a very unusual tumour with undifferentiated mesenchymal as well as ectodermal elements. Somatostatin receptor scintigraphy (SRS) was performed during the diagnostic workup. The recurrent residual tumour mass was exactly visualized with SRS,...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470000404
更新日期:2001-03-01 00:00:00
abstract:BACKGROUND:Air enema under fluoroscopy is a well-accepted procedure for the treatment of childhood intussusception. However, the reported radiation doses of pneumatic reduction with conventional fluoroscopy units have been high in decades past. OBJECTIVE:To compare current radiation doses at our institution to past do...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-014-3218-3
更新日期:2015-04-01 00:00:00
abstract::Acute lymphoblastic leukemia (ALL) is the most common of all childhood malignancies. Current remission rates approach 80%. Recurrent disease can present in a wide variety of ways. MR imaging plays a crucial role in the detection of disease relapse. Because other disorders can mimic recurrence of leukemia, it is import...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-003-1137-9
更新日期:2004-05-01 00:00:00
abstract::Alagille syndrome, or arteriohepatic dysplasia, is a disorder characterized by paucity of intrahepatic bile ducts, peculiar facies and skeletal anomalies. We report a typical case of this syndrome in an 18-year-old girl, in whom abdominal CT showed bilateral renal cysts and aortic wall calcification, findings unreport...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02011114
更新日期:1995-01-01 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::Most pediatric malignancies require some form of cross-sectional imaging, either for staging or response assessment. The majority of these are solid tumors and this review addresses the role of MRI, as well as other cross-sectional and functional imaging techniques, for evaluating the most common pediatric solid tumor...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-018-4162-4
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND:Recent reports have indicated that infants and young children have a higher sensitivity than older children and adults to radiation exposure and the potential for harmful side effects. OBJECTIVE:To determine whether the present landmarks used in film positioning result in unnecessary radiation to non-thorac...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-005-0016-y
更新日期:2006-01-01 00:00:00
abstract::We report a unique case of cobblestone complex using post-mortem MR and diffusion tensor imaging to assess the laminar organization of the fetal cerebrum. The imaging findings were correlated with autopsy findings. Abnormal cortical development in cobblestone complex resulted in disruption of normal laminar organizati...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-009-1255-0
更新日期:2009-08-01 00:00:00
abstract::Juvenile granulosa cell tumor of the testis is a distinct form of sex cord-stromal tumor of neonates and infants [1]. This tumor comprises a significant percentage of testicular tumors in baby boys. We present a patient who had preoperative imaging studies. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02012994
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND:Infantile Blount disease is a developmental condition characterized by disorganized endochondral ossification in the medial aspect of the proximal tibial physis. OBJECTIVE:To describe the MR imaging abnormalities in the proximal tibia, distal femur, menisci and ligaments of children with infantile Blount di...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-013-2686-1
更新日期:2013-10-01 00:00:00
abstract:PURPOSE:The Haller index is an accepted CT method for evaluating thoracic dimensions in patients with pectus excavatum. The purpose of this study is to establish age- and gender-related norms for the Haller index in childhood. MATERIALS AND METHODS:We retrospectively reviewed 574 consecutive chest CT examinations (M=2...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-003-1116-1
更新日期:2004-04-01 00:00:00
abstract::We report an extremely unusual case of a 4-month-old boy who presented with a sudoriferous gland cyst of the orbit. Congenital sudoriferous cyst is extremely rare in both the adult and pediatric populations. The CT and MRI findings are presented and the pertinent literature reviewed. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-005-1523-6
更新日期:2005-11-01 00:00:00
abstract::Goiter secondary to amyloidosis is rare in clinical practice and only a few descriptions of its radiologic features have been reported. We present the ultrasound and MRI findings of thyroid amyloidosis in a 7-year-old Turkish boy with familial Mediterranean fever. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02012155
更新日期:1993-01-01 00:00:00
abstract::The pituitary gland can demonstrate a variety of pathologies with different clinical presentations. Amongst them, pituitary abscess is a rare infectious disease for which contrast-enhanced MRI aids the diagnostic pathway. We present a 16-year-old girl with imaging and surgical findings consistent with primary pituitar...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s00247-009-1435-y
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND:Motion remains a major limitation of fetal magnetic resonance imaging (MRI). Some centers have required mothers to fast before MRI in an effort to reduce motion; however, there is no current literature that describes the effect of maternal diet on fetal activity. OBJECTIVE:The objective is to define associa...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-018-4254-1
更新日期:2019-01-01 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::Radiographic differentiation between cystic fibrosis and asthma presenting in teenagers and young adults can be difficult. Many patients with a late presentation of cystic fibrosis display minimal changes on a chest radiograph. However, a large majority (90%) of cystic fibrosis patients with an essentially normal PA c...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02388758
更新日期:1985-01-01 00:00:00
abstract::Developmental stenosis of the cervical spine results in a reduction of the caliber of the cervical spinal canal that is greatest in the anteroposterior dimensions. This usually becomes symptomatic in adults when a myelopathy may result from compression of the cervical cord by small osteophytes or by hyperextension inj...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02388241
更新日期:1987-01-01 00:00:00
abstract::Glenoid dysplasia is an anomaly of the scapula characterized by underdevelopment of the bony glenoid and adjacent part of the scapular neck which may be seen as a primary isolated condition, in patients with multiple anomalies or ill-defined syndromes, in well-described syndromes, in mucopolysaccharidoses and related ...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s002470050287
更新日期:1998-01-01 00:00:00
abstract:BACKGROUND:We present the case of an 8-year-old girl with acute onset of intermittent lower abdominal pain. The gray-scale US examination showed an enlarged right ovary with peripheral cysts, reflecting ovarian congestion and strongly suggesting the diagnosis of torsion. Normal arterial and venous flow, however, was fo...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-002-0739-y
更新日期:2002-08-01 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:OBJECTIVE:To evaluate the effectiveness of lateral decubitus high-resolution CT (HRCT) in detecting air trapping in children. MATERIALS AND METHODS:HRCT scans of 21 children with heterogeneous lung attenuation caused by air trapping (n = 10) or with infiltrative lung disease (n = 11) were reviewed retrospectively. The...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-001-0622-2
更新日期:2002-03-01 00:00:00