Abstract:
BACKGROUND:Various skeletal muscle diseases result in fatty infiltration, making it important to develop noninvasive biomarkers to objectively measure muscular fat. OBJECTIVE:We compared T2 relaxation time mapping (T2 maps) and magnetic resonance spectroscopy (MRS) with physical characteristics previously correlated with intramuscular fat to validate T2 maps and MRS as objective measures of skeletal muscle fat. MATERIALS AND METHODS:We evaluated gluteus maximus muscles in 30 healthy boys (ages 5-19 years) at 3 T with T1-weighted images, T2-W images with fat saturation, T2 maps with and without fat saturation, and MR spectroscopy. We calculated body surface area (BSA), body mass index (BMI) and BMI percentile (BMI %). We performed fat and inflammation grading on T1-W imaging and fat-saturated T2-W imaging, respectively. Mean T2 values from T2 maps with fat saturation were subtracted from T2 maps without fat saturation to determine T2 fat values. We obtained lipid-to-water ratios by MR spectroscopy. Pearson correlation was used to assess relationships between BSA, BMI, BMI %, T2 fat values, and lipid-to-water ratios for each boy. RESULTS:Twenty-four boys completed all exams; 21 showed minimal and 3 showed no fatty infiltration. None showed muscle inflammation. There was correlation between BSA, BMI, and BMI %, and T2 fat values (P < 0.05), and between BMI and BMI %, and lipid-to-water ratios (P < 0.05). There was strong correlation between T2 fat values and lipid-to-water ratios (P < 0.0001, r = 0.83). CONCLUSION:T2 maps and MR spectroscopy correlate with physical characteristics associated with fatty infiltration of skeletal muscles, even in microscopic amounts, and validate each other. Both techniques might enable detection of minimal pathological fatty infiltration in children with skeletal muscle disorders.
journal_name
Pediatr Radioljournal_title
Pediatric radiologyauthors
Kim HK,Serai S,Merrow AC,Wang L,Horn PS,Laor Tdoi
10.1007/s00247-013-2791-1subject
Has Abstractpub_date
2014-02-01 00:00:00pages
149-57issue
2eissn
0301-0449issn
1432-1998journal_volume
44pub_type
杂志文章abstract::We present a 16-year-old boy with autoimmune liver disease and longstanding portal hypertension in whom a CT arteriogram demonstrated a large aneurysm arising from the distal, extra-parenchymal portion of the splenic artery. Because of its location adjacent to multiple venous collaterals, the aneurysm was indistinguis...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-009-1493-1
更新日期:2010-07-01 00:00:00
abstract::Sternal clefts have been reported sporadically, but there are no reports describing complete investigations of the malformation. We describe a child with isolated inferior sternal cleft diagnosed at 33 weeks of gestation and thoroughly investigated by prenatal US, MRI and CT and preoperative US. Our report highlights ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-011-2318-6
更新日期:2012-08-01 00:00:00
abstract::One hundred barium meal examinations performed on infants of less than 4 months of age are reviewed. All the infants presented with vomiting as a major symptom and the diagnosis remained in doubt following the initial clinical assessment. Fifty seven per cent of the examinations showed an abnormality of which 45% were...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF01625813
更新日期:1984-01-01 00:00:00
abstract::Presenting one case of nephroblastomatosis (NB) the diagnostic approach by different imaging modalities is discussed. Ultrasound (US) of the kidneys as a basic examination showed one focus of NB but missed two further foci which were clearly shown by contrast enhanced CT and MR. Contrast enhanced CT has been considere...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02011736
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:Safety concerns are increasingly raised regarding the use of gadolinium-based contrast media for MR imaging. OBJECTIVE:To determine the accuracy of pre-contrast abdominal MR imaging for lesion detection and characterization in pediatric oncology patients. MATERIALS AND METHODS:We included 120 children (37 ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-016-3664-1
更新日期:2016-11-01 00:00:00
abstract::Protocol development between radiology and pediatric emergency medicine requires a multidisciplinary approach to manage straightforward as well as complex and time-sensitive needs for emergency department patients. Imaging evaluation requires coordination of radiologic technologists, radiologists, transporters, nurses...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-008-0973-z
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND:A new children's hospital provided the impetus to investigate radiation dose and image quality in a fluoroscope that was specially engineered for pediatric fluoroscopy. Radiation protection management recommends radiation exposures that are as low as reasonably achievable, while still maintaining diagnostic ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470050728
更新日期:2000-04-01 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::We present an unusual case of popliteal entrapment syndrome type I in an 11-year-old boy. Presenting symptoms were exercise-related pain and pallor in his left lower leg. The diagnosis of popliteal entrapment syndrome was established by acral plethysmography, colour-coded Doppler sonography and MRI. After myotomy of t...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470050552
更新日期:1999-02-01 00:00:00
abstract::The imaging procedures utilized at presentation in the diagnostic work-up of 19 children with Burkitt lymphoma were reviewed. The distribution of disease was compared to other tumors of childhood so that the most valuable modalities could be identified. Burkitt lymphoma is a rapidly growing tumor in the child, making ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02388718
更新日期:1985-01-01 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
abstract::Prenatal imaging with high-resolution US and rapid acquisition MRI plays a key role in the accurate diagnosis of congenital chest masses. Imaging has enhanced our understanding of the natural history of fetal lung masses, allowing for accurate prediction of outcome, parental counseling, and planning of pregnancy and n...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-011-2171-7
更新日期:2012-01-01 00:00:00
abstract::Pelvis-shoulder dysplasia is rare skeletal dysplasia characterised by symmetrical hypoplasia of the iliac wings and scapulae. It may be associated with unstable hips in infancy, a prominent lumbar lordosis and a waddling gait. Symptoms tend to lessen with increasing age. A child with this condition who has been follow...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF00972181
更新日期:1977-01-01 00:00:00
abstract::Swallowed toothbrushes were noted in the esophagus of one teenager and the stomach of two others with bulimia. The presence of a toothbrush in the lumen of the gastrointestinal tract should make the radiologist suspicious of bulimia/anorexia nervosa. A toothbrush shows a characteristic radiographic image with parallel...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02018618
更新日期:1991-01-01 00:00:00
abstract::We report an atypical leiomyoma arising in an hepatic vein and extending into the inferior vena cava and right atrium in a fourteen year old boy. US, CT and MRI facilitated diagnosis and removal of this tumor. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02012978
更新日期:1990-01-01 00:00:00
abstract::In children, primary neoplasms of the tracheobronchial tree and lungs are rare; most are malignant. Of the primary malignant pulmonary neoplasms arising in childhood, mucoepidermoid carcinoma accounts for approximately 10%. Due to its well-confined local growth within the airway, mucoepidermoid carcinoma commonly prod...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-007-0607-x
更新日期:2007-12-01 00:00:00
abstract::We report an 18-year-old boy with occipital horn syndrome who developed aneurysms of the splenic and hepatic arteries. Occipital horn syndrome, also called X-linked cutis laxa or Ehlers-Danlos syndrome (EDS) type IX, is characterised by a skeletal dysplasia which includes occipital horns, broad clavicles, deformed rad...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/s002470050526
更新日期:1999-01-01 00:00:00
abstract::Smooth muscle neoplasms seem to be particularly frequent in children with AIDS, and several cases of such lesions, both benign and malignant (leiomyomas and leiomyosarcomas), have recently been reported in the literature. We describe here the imaging findings in a boy with AIDS who developed two leiomyomas of the gall...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s002470050074
更新日期:1997-01-01 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:CT optimization has a special importance in children. Smaller body size accentuates the importance of patient positioning affecting both radiation dose and image quality. OBJECTIVE:To determine the effect of vertical positioning on organ dose, image noise and contrast in pediatric chest CT examination. MAT...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-012-2611-z
更新日期:2013-06-01 00:00:00
abstract::Sonographic examination of the adrenal glands of three newborns with congenital adrenal hyperplasia demonstrated a cerebriform pattern. This is introduced as a sonographic feature specific to the disease. This finding in patients with ambiguous genitalia should suggest the diagnosis even if the adrenals are not signif...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02012391
更新日期:1993-01-01 00:00:00
abstract::During halothane anaesthesia the hepatic blood flow may be reduced. This effect interferes with the angiographic investigation of the liver and this is demonstrated by the case presented. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF00973989
更新日期:1977-03-17 00:00:00
abstract::Two cases of Gorham's disease (massive osteolysis, idiopathic osteolysis, vanishing bone disease) involving the thoracic skeleton are reported. Both patients were adolescent females with involvement of multiple ribs. Involvement of the thoracic spine and pleural effusions--unusual manifestations carrying a poor progno...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02012145
更新日期:1993-01-01 00:00:00
abstract::Retirement can be defined as a new stage of an active lifestyle. It is a unique chapter in life that can be fun and rewarding, if steps are taken to plan the process. Key factors to take into consideration during this process are family, friends, finances, and professional interests. With proper planning, rather than ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-009-1523-z
更新日期:2010-04-01 00:00:00
abstract::The relationship between image noise and radiation dose was investigated in computed tomography (CT) images of a pediatric abdomen phantom. A protocol which provided a minimum absorbed dose consistent with acceptable image noise criteria was determined for a fourth generation CT scanner. It was found that pediatric ab...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/BF02387506
更新日期:1986-01-01 00:00:00
abstract::A detailed radiologic and anatomic study of one horseshoe lung syndrome has already been published from this centre. A further case of horseshoe lung, which was also diagnosed prospectively by radiology, is described. Alongside, this is a set of a group of three conditions: we describe a right accessory lung with a pe...
journal_title:Pediatric radiology
pub_type: 杂志文章,评审
doi:10.1007/BF02129059
更新日期:1990-01-01 00:00:00
abstract::We present the CT and MRI findings of an 8-day-old infant with an infected cephalhaematoma complicated by skull osteomyelitis, venous sinus thrombosis and left cerebellar haemorrhage. ...
journal_title:Pediatric radiology
pub_type: 杂志文章
doi:10.1007/s00247-001-0647-6
更新日期:2002-05-01 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::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::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