ABSTRACT
Objective To investigate the relationship between myocardial ischemia and slow coronary flow phenomenon with 99Tcm-methoxyisobutylisonitrile (MIBI) adenosine myocardial perfusion SPECT imaging. Methods Forty-four patients were divided to three groups according to the result of coronary angiography(CAG). There were GAG-positive(P-GAG) (n=12),slow coronary flow (CSF) (n =22),and normal coronary flow (NCF) (n = 10). Results of adenosine myocardial perfusion imaging were compared among these three groups. Semi-quantitative visual scoring method was used to evaluate the myocardial perfusion:0 = normal,1 = mild decrease,2 = moderate decrease,3 = severe decrease,4 = defect. Statistical analysis was performed using variance analysis,t-test and x2-test. Results No significance was observed at age ( t =0.27,0. 54 and 0. 59),sex (x2 = 0. 92),hypertension,hyperlipemia and diabetes (x2 = 1.23,all P ＞ 0.05 ) among the three groups. A significantly higher frames of the coronary thrombolysis in myocardial infarction (TIMI) flow was noted in CSF than in NCF groups (33.7 ±5.5 vs 17.6 ±3.9,t = 9. 58,P ＜0. 001 ). The positive adenosine myocardial perfusion imaging rate were significant among these three groups with 100% (12/12) in P-CAG group,77.3% (17/22) in CSF group,and 20% (2/10) in NCF group. When using semi-quantitative visual scoring method,significantly higher average ischemia segments were noted in CSF group than in NCF group ( 1.06 ± 0.77 and 0. 91 ± 0.80,t = - 2. 02,P ＜ 0. 05 ),but was less than that in P-CAG group (2.41 ±0.79,t =4. 54,P ＜0.001 ). The degree of ischemia of CSF group was higher than that in NCF group ( 8.01 ± 6.06,and 2.73 ± 2.60,t = - 2.07,P ＜ 0.05 ) and was less than that in P-CAG group (14. 07 ±12. 77 ,t=1.44,P＞0. 05). Conclusion Slow coronary flow phenomenon can be detected by adenosine myocardial perfusion image to offer the evidence of diagnosis and treatment for the chest pain patients with negative coronary angiography results.
ABSTRACT
Objective To explore features and clinic values of LNR anatomy with multiple planar reconstruction techniques with 16-slice spiral CT at the same slice.Methods The lumbar vertebrae with normal adults of 55 cases and 23 cases with abnormal ENR caused by 8 cases with protrusion of lumbar disc, 5 cases with spinal stenosis,4 cases with malignant tumor,5 cases with trauma and 1 case with lumbar TB confirmed by operation were scanned with 16-slice spiral CT made in American GE company in routine posture of the lumbar vertebrae,reconstructed LNR with UNIX system in workstation (ADW 4.1),and analyzed their normal and abnormal anatomic manifestations at the same slice.Results All of LNR can symmetrically showed on oblique and coronal planes according to different segments:one segment from L1 to L5(55,100% ),two segments: from L1 to L2,L2 to L3 and L3 to L4(55,100% ),three segments: from L1 to L3 (49,88%),from L2to L4(46,84% )and from L3 to L5(20,36% ),four segments: from L1 to L4 (15,27% )and five segments:(8,15% ),respectively.Each LNR,including their whole shapes of passage from starting to end,direction,size,shape,tension and peripheral relationship and so on can showed clearly on oblique and coronal planes and on other planes. However,the later planes can increase LNR but decreasing numbers of LNR and especially increase very long one LNR reconstruction.Primary manifestation of all diseases can be showed on oppressing along its walking line,meanwhile,20 cases with adhesion, 14 cases with displacement,13 cases atrophy and 9 cases with increasing diameter.Conclusions Image anatomy features of full LNR with 16-slice spiral CT with the multiple plane reconstruction techniques is very ideal ways at the same slice.It is a very valuable way to make diagnosis and treatment of LNR diseases.The concept of"road sing"and showing"at the same slice"of LNR are tried to rise from in order to make foundation for studying their image.