The skin-to-calyx distance measured by renal ct scan and ultrasound
Int. braz. j. urol
; 40(2): 212-219, Mar-Apr/2014. tab, graf
Article
en En
| LILACS
| ID: lil-711700
Biblioteca responsable:
BR1.1
ABSTRACT
PurposeWe developed a stereotactic device to guide the puncture for percutaneous nephrolithotripsy, which uses the distance from the target calyx to its perpendicular point on skin (SCD) to calculate the needle´s entry angle. This study seeks to validate the use of measurements obtained by ultrasound (US) and computerized tomography (CT) for needle´s entry angle calculation and to study factors that may interfere in this procedure.Materials and MethodsHeight, weight, abdominal circumference, CT of the urinary tract in dorsal decubitus (DD) and ventral decubitus (VD), and US of the kidneys in VD were obtained from thirty-five renal calculi patients. SCD obtained were compared and correlated with body-mass index (BMI).ResultsBMI was 28.66 ± 4.6 Kg/m2. SCD on CT in DD was 8.40 ± 2.06cm, in VD was 8.32 ± 1.95cm, in US was 6.74 ± 1.68cm. SCD measured by US and CT were statistically different (p < 0.001), whereas between CT in DD and VD were not. SCD of the lower calyx presented moderate correlation with BMI.ConclusionSCD obtained by CT in ventral and dorsal decubitus may be used for calculation of the needle´s entry angle. SCD obtained by US cannot be used. A rule for the correlation between BMI and the SCD could not be determined.
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Texto completo:
1
Bases de datos:
LILACS
Asunto principal:
Piel
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Tomografía Computarizada por Rayos X
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Técnicas Estereotáxicas
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Cálices Renales
Límite:
Adolescent
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Adult
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Aged
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Female
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Humans
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Male
Idioma:
En
Revista:
Int. braz. j. urol
Asunto de la revista:
UROLOGIA
Año:
2014
Tipo del documento:
Article
País de afiliación:
Brasil