sound ray
1.Methods Calcaneal broadband ultrasound attenuation ( BUA) ,sound of speed ( SOS ) and stiffness( STI) by QUS ,BMD of the AP lumber spine by dual energy X-ray absorptometry ( DXA ) and some biochemical markers of bone metabolism in elderly patients with type 2 diabetes mellitus ( n=94 )and in healthy control group ( n=90 ) were measured .
2.Methods: Bone mineral density(BMD) at anteroposterior and lateral spine,left hip and forearm was measured by dual energy X-ray absorptiometry(DXA),BMD of left forearm by single photon absorptiometry(SPA) and speed of sound (SOS) at right tibia by quantiative ultrasound (QUS) in 294 subjects.
4.Basic function : heat source is anti-blast infrared-tube made of microcrystal quartz;,continuosly variable mattress tilt,radiant head can two-directory rotate on horizon, X-ray cassette shelf under infant bed ;high-bright erdiate lamp detect lightness;advanced microprocessor control temperature system,auto-heated mode,separately display set temperature and real temperature;4sound-light alarm capacity:set-off,fan,sensor,over temp. .
5.Basic function: heat source is anti-blast infrared-tube made of microcrystal quartz; continuously variable mattress tilt, radiant head can two-directory rotate on horizon , X-ray cassette shelf under infant bed; high-bright eradiate lamp detect lightness; advanced microprocessor control temperature system, autoheated mode , separately display set temperature and real temperature; 4 sound-light alarm capacity ; set-off, sensor, over temp.

