1) X-ray absorptiometry
X线吸收法
1.
MethodsBody composition of patients with gastric cancer(n=50) and healthy adults(n=31) were measured by dual-energy X-ray absorptiometry(DEXA).
方法随机选择择期手术的胃癌病人50例作为研究对象,健康人31例作为对照组,采用双能源X线吸收法测定各组人体组分。
2) dual-energy X-ray absorptionetry
双能X线吸收法
1.
【Methods】 With random sampling 0～1-year-old infants from Wuhan,the dual-energy X-ray absorptionetry(DEXA) was applied to measure their BMD,176 infants whose BMD were under normal were randomly assigned to two groups,one was the intervention group,in which infants were accepted synthetical interventional measures included sleep,dietary structure,activity in outdoors and appropriate calcium supply.
【方法】随机抽取武汉地区0~1岁婴儿,采用双能X线吸收法(the dual-energy X-ray absorptionetry,DEXA)检测其骨密度,将BMD异常的婴儿176例随机分为两组:一组为干预组,从第一次测试之日起在睡眠、膳食结构、活动量、日照时间及补充维生素D和钙剂方面采取综合干预措施,另一组为对照组,采用自然育儿方法。
3) Dual-energy X-ray absorptiometry(DXA)
双能X线吸收法
1.
Aim: To measure the precision of bone mineral density(BMD)and body composition in rats using dual-energy X-ray absorptiometry(DXA) and evaluate its reliability.
目的:采用双能X线吸收法(DXA)进行大鼠骨密度(BMD)和身体软组织成分测量的精密度试验,探讨DXA对大鼠骨密度和身体软组织成分测量结果的可靠性。
4) Dual energy X-ray absorptiometry
双能X线吸收法
1.
A Preliminary Analysis of the Bone Densitometer of Dual Energy X-ray Absorptiometry;
双能X线吸收法骨密度仪测试原理浅析
2.
Methods dual energy X-ray absorptiometry was used to measure the bone mineral density of alveolar bone between periodontitis patients and other patients.
方法 采用双能X线吸收法测量不同原因拔牙后牙槽骨骨密度及腰椎椎体骨密度。
5) dual-energy X-ray absorptiometry
双能X线吸收法
1.
Methods The BMD of the distal 1/3 forearm of 8286 infants aged 0-3 years from Wuhan was measured by dual-energy X-ray absorptiometry(DXA).
方法采用双能X线吸收法测定武汉地区8286名0~3岁婴幼儿前臂远端1/3桡尺骨的骨密度(BMD)。
6) Dual energy X ray absorptiometry
双能X线吸收法
补充资料：线吸收
天体光谱中吸收线的存在表明，在某些谱线频率上辐射会被吸收，这种局限在谱线频率范围内的吸收称为线吸收。线吸收是由原子在分立能级之间的跃迁产生的。原子从能量为Ei的低能级跃迁到能量为Ek(Ek>Ei)的高能级时,就要吸收频率为的光量子(h为普朗克常数),该频率处的辐射减弱，形成线吸收。实际上，线吸收并不严格地位于频率vik处,因为有一系列谱线致宽机制（见谱线的形成和致宽）使线吸收扩展到vik 附近的一定频率范围内。按照吸收性质的不同，也可把线吸收分为真吸收和散射（见恒星大气的吸收和散射）。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条