Bone scintigraphy in children with cat scratch disease.

Aim: The objective of this study was to evaluate the degree and incidence of bone involvement in patients with cat scratch disease.

Methods: Patients admitted between 2004 and 2011 at the pediatric department for cat scratch disease and a positive serology for Bartonella henselae were identified. Only those having undergone a bone scintigraphy (BS) were included in this retrospective study.

Inter- and intra-observer reproducibility of quantitative renographic parameters of differential function and renal drainage in children.

Purpose: To evaluate inter- and intra-observer reproducibility of renographic quantitative parameters of input and output in children.

Methods: 100 children with unilateral or bilateral uropathy were selected, aiming to cover the entire range of ages, overall glomerular filtration rate (GFR), differential renal function (DRF) and quality of drainage. Renograms were acquired and processed according to the EANM guidelines, using a non-commercial software.

[Evolution of scintigraphic renal lesions in children after an episode of acute pyelonephritis].

Background: Abnormal Dimercaptosuccinic acid (DMSA) renal scintigraphy performed six months after an acute pyelonephritis (AP) is generally interpreted as scarring.

Aim: To perform a follow up of childhood patients showing scintigraphic renal lesions during the acute phase of pyelonephritis (within 7 days from the beginning of fever).

Material And Methods: A scintigraphic control was carried out at 5-7 months and, in case of persistent lesions, an additional late scintigraphy at 10-13 months.

Registration of renal SPECT and 2.5D US images.

Image registration is the process of transforming different image data sets of an object into the same coordinate system. This is a relevant task in the field of medical imaging; one of its objectives is to combine information from different imaging modalities. The main goal of this study is the registration of renal SPECT (Single Photon Emission Computerized Tomography) images and a sparse set of ultrasound slices (2.

[Tc 99M DMSA scintigraphy in children with a first episode of acute pyelonephritis: correlation with laboratory tests, echography and the presence of vesico-ureteral reflux].

Background: Tc99m DMSA (dimercaptosuccinic acid) scintigraphy has a high sensitivity for the detection of cortical kidney damage.

Aim: To evaluate the Tc99m DMSA renal scintigraphy in children with a first episode of acute pyelonephritis and its association with laboratory parameters, kidney ultrasound and vesicoureteral reflux.

Patients And Methods: We studied 143 children (age range 8 days, 12 years, 66% female) hospitalized with the clinical diagnosis of acute pyelonephritis (first episode) with a positive urine culture and a renal scintigraphy performed within seven days of diagnosis.

[Tc99m-pertechnetate thyroid scintigraphy in newborns with congenital hypothyroidism].

Background: Congenital hypothyroidism is one of the most frequent endocrine diseases of the newborn and requires an early diagnosis to avoid its deleterious effects on neurological and intellectual functions.

Aim: To evaluate thyroid scintigraphy (TS) findings in newborns with congenital hypothyroidism (CH), detected in the national program of newborn screening, which is working in Chile since 1992.

Material And Methods: TS findings of 189 newborns with CH (68% female) were analyzed.