一种使用螺旋计算机断层扫描测量腹内脂肪体积的新方法。

A novel method of measuring intra-abdominal fat volume using helical computed tomography.

作者信息

Kobayashi J, Tadokoro N, Watanabe M, Shinomiya M

机构信息

Department of Internal Medicine, Chibaken Saiseikai Narashino Hospital, Narashino, Japan.

出版信息

Int J Obes Relat Metab Disord. 2002 Mar;26(3):398-402. doi: 10.1038/sj.ijo.0801921.

DOI:10.1038/sj.ijo.0801921

PMID:11896496

Abstract

OBJECTIVES

:We present a novel method of scanning for intra-abdominal fat volume by helical computed tomography (CT), and describe the clinical significance of measuring the volumes of intra-abdominal visceral fat (V(vol)) and subcutaneous fat (S(vol)) vs these respective areas determined by conventional slice-by-slice CT at the umbilical level.

METHOD

Subjects with obesity or hyperlipidemia (79 men, 74 women) were recruited for this study. We obtained helical CT scans with a tube current of 150 mA, voltage of 120 kV and 2:1 pitch (table speed in relation to slice thickness), starting at the upper edge of the liver and continuing until the pelvis. The intra-abdominal visceral fat volume was measured by drawing a line within the muscle wall surrounding the abdominal cavity. The abdominal subcutaneous fat volume was calculated by subtracting the visceral fat volume from the total abdominal fat volume. By comparison, the intra-abdominal visceral and subcutaneous fat areas were determined at the umbilical level by the established slice-by-slice CT scanning technique.

RESULTS

V(vol) was correlated positively with visceral fat area (V(area)) measured by conventional CT in both genders (in men (n=79) V(vol) vs V(area), r=0.81 P<0.0001; in women (n=74) V(vol) vs V(area), r=0.85, P<0.0001). S(vol) also showed a positive correlation with subcutaneous fat area (S(area)) in both genders (in men (n=78) S(vol) vs S(area), r=0.95, P<0.0001; in women (n=74) S(vol) vs S(area), r=0.92, P<0.0001).

CONCLUSION

We have reported a novel method for measuring intra-abdominal fat volume by the use of helical CT.

摘要

目的

我们介绍一种通过螺旋计算机断层扫描（CT）扫描腹内脂肪体积的新方法，并描述测量腹内内脏脂肪（V(vol)）和皮下脂肪（S(vol)）体积相对于传统脐水平逐层CT确定的这些相应面积的临床意义。

方法

招募肥胖或高脂血症患者（79名男性，74名女性）参与本研究。我们以150 mA的管电流、120 kV的电压和2:1的螺距（床速与层厚的关系）进行螺旋CT扫描，从肝脏上缘开始直至骨盆。通过在围绕腹腔的肌壁内绘制一条线来测量腹内内脏脂肪体积。腹部皮下脂肪体积通过从腹部总脂肪体积中减去内脏脂肪体积来计算。相比之下，通过既定的逐层CT扫描技术在脐水平确定腹内内脏和皮下脂肪面积。

结果

在男性（n = 79）和女性（n = 74）中，V(vol)与传统CT测量的内脏脂肪面积（V(area)）均呈正相关（男性中V(vol)与V(area)，r = 0.81，P < 0.0001；女性中V(vol)与V(area)，r = 0.85，P < 0.0001）。在男性（n = 78）和女性（n = 74）中，S(vol)与皮下脂肪面积（S(area)）也呈正相关（男性中S(vol)与S(area)，r = 0.95，P < 0.0001；女性中S(vol)与S(area)，r = 0.92，P < 0.0001）。