摘要
利用放射性生物微球技术，测定了幼年组和成年组狗下颌升支的血流分布情况。研究结果表明，幼年组狗下颌升支６个区域的血流量（ｍｌ／ｍｉｎ·１００ｇ）分别为２０．２６±３．４５、１０．７０±２．６９、６．５２±２．５９、８．９２±２．４７、１４．１９±３．３３、１２．０５±３．０７，而成年组狗下颌升支各对应区域的血流量（ｍｌ／ｍｉｎ·１００ｇ）为１２．０２±２．３１、８．６５±２．０２、４．３９±１．４７、６．０７±１．２８、７．４４±１．７０、５．４４±１．４２。通过比较发现，幼年组狗下颌升支各区域的血流量均显著大于成年组狗下颌升支各对应区域的血流量。两组动物下颌升支的血供分布方式也有一定的差异，以单位重量内骨血流量计，幼年组狗下颌升支各区域血流量大小依次为髁状突区、喙突区、中央区、后缘角突区、前缘区、下缘区，而成年组狗下颌升支各区域血流量大小依次为髁状突区、后缘角突区、喙突区、前缘区、中央区、下缘区。本研究所揭示的狗下颌升支血流分布的年龄差异，反映了下颌升支的生长发育与其血供的密切关系。
Blood flow distributions of canine mandibular rami in two different age groups were measured using the radioactive microsphere technique. The blood flow rates (ml/min/100g) of six regions of canine mandibular ramus of the inflant group were 20. 26±3. 45 , 10. 70±2. 69,6. 52±2.59,8. 92±2. 47,14.19±3.33 and 12.05±3.07.The blood flow rates of the cor respondent regions of mandibular ramus in the adult group were 12.02± 2.31 , 8.65± 2.02,4.39±1.47,6. 07± 1.28 , 7.44± 1.70,and 5.49± 1.42.The blood flow rates of six regions of mandibular ramus in the infant group were all significantly higher than that of the corre spondent regions of the adult group. The distribution patterns of blood supply to mandibular ramus are also not identical between the infant and the adult groups- The age-related differ ences of blood flow distribution of canine mandibular ramus reflects the intimate relation be tween the blood supply and growth of mandibular ramus.
出处
《中国医学科学院学报》
CAS
CSCD
北大核心
1994年第4期275-280,共6页
Acta Academiae Medicinae Sinicae
基金
国家自然科学基金
关键词
下颌升支
放射性微球
血流量
mandibular ramus,blood supply,radioactive microsphere
