Dissertation
Dissertation > Medicine, health > Clinical > Diagnostics > Diagnostic Imaging > Ultrasonic diagnosis

Experimental Research on Ultrasound Assessment of Testis Survivorship after Testicular Artery Completely Blocked

Author WangXianZhi
Tutor QuanXueMo
School Chongqing Medical University
Course Medical Imaging and Nuclear Medicine
Keywords Artery Testis Blocking Hemodynamic Doppler Color
CLC R445.1
Type Master's thesis
Year 2010
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Objective : color Doppler ultrasound , explore different times of the testicular artery is completely blocked testicular survival . Methods: 30 healthy male rabbits , body weight 2.0 to 2.5kg , were randomly divided into three groups A, B and C ( n = 10 ) . Right testicular artery completely blocked testis induced by ischemia and 3 h ( group A ) , 6 h ( group B ) and 12 hours ( C group) to unblock the blocking to do before and after the two-dimensional ultrasound and color Doppler spectrum observed testicular in real terms ( two - dimensional sonogram ) and testicular hemodynamics ( Doppler spectrum , the main indexes right testicular artery end-systolic blood flow velocity ( Vs ) , the highest end-diastolic blood flow velocity ( Vd ) and resistance index ( RI ) ) . In BFI and PDI mode , the contrast observed before and after blocking the testicular artery within the testicular blood vessels and blood supply . 10min cut side testicular tissue for biopsy , testicular tissue necrosis and ultrastructural changes were observed under light microscopy and transmission electron microscopy . Results: blocking the testicular artery animals in each group after the lifting of the testicular artery occlusion , testicular two-dimensional sonographic and testicular blood flow mechanics have the appropriate changes . Group A blocking testicular artery after 3 h , the PW ( Vs0.056 ± 0.015 , Vd 0.030 ± 0.010 , RI0.45 ± 0.11 ) , B group PW ( Vs0.040 ± 0.010 , Vd0.009 ± 0.001 RI0.55 ± 0.15 ) , C group PW (Vs0.011 ± 0.009, Vd0.006 ± 0.002, RI0.65 ± 0.15). Blocking the longer Vs , Vd reduce the RI increases , the more obvious contrast between group difference was statistically significant ( P lt ; 0.05 ) BFI mode testicular artery blood flow signal weakened or unclear , PDI testicular blood supply decreased or disappeared . Optical and electron microscopy , the testicular parenchyma cells varying degrees of necrosis . Conclusion: testicular blood supply disorder occurs , color Doppler ultrasound can detect testicular blood supply and determine whether the testis survival .

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