Objective To observe the digital subtraction angiography (DSA) characteristics of ophthalmic artery and its main branches in ischemic cerebrovascular disease (ICVD). Methods The internal carotid arteries, external carotid arteries and ophthalmic arteries of 32 ICVD patients were examined for DSA. The characteristics of ophthalmic artery origin, trail and main branches were observed. Results Among 64 carotid arteries of 32 patients, there was one carotid artery with internal occlusion, there was no severe stenosis in the other 63 carotid arteries. The 63 ophthalmic arteries originated all from supraclinoidal and ophthalmic segments of internal carotid arteries. 58 ophthalmic arteries were single branch from the internal carotid artery. 5 ophthalmic arteries had 2 branches, one come from the internal carotid artery, the other come from the middle meningeal artery (external carotid artery branch ) in 4 cases or from the anterior cerebral artery (carotid artery branch) in 1 case. The main branches of ophthalmic artery included central retinal artery, posterior ciliary artery, lacrimal gland artery, ocular muscular artery; anterior ethmoid artery, posterior ethmoid artery, supraorbital artery, dorsal nasal artery, supratrochlear artery and eyelid artery. The beginning point of each branches were variable. Conclusions Ophthalmic arteries of ICVD patients primary arise from the internal carotid artery. It most often appears as single branch and occasionally as double branches. The beginning points of major branches of ophthalmic artery are variable.
ObjectiveTo explore the clinical value of dual-source CT perfusion imaging (CTPI) in the assessment of cerebral hemodynamic changes in patients with internal carotid atherosclerosis.
MethodsThirty patients diagnosed to have internal carotid atherosclerosis by CT angiography examination with various degrees of stenosis or occlusion were treated between January 2012 and May 2013. Whole brain perfusion imaging was performed on all the patients. We rebuilt the CTPI figure parameters respectively, including cerebral blood volume (CBV), blood flow (CBF), mean transit time (MTT) and time to peak (TTP) to assess brain tissue perfusion.
ResultsIn the 30 patients with internal carotid atherosclerosis, 8 had mild stenosis lumen, 12 moderate stenosis, 7 severe stenosis and 3 had occlusion. In mild stenosis cases, TTP of stenosis-side vessels was higher than those of coutralateral side (P<0.05), and there were no significant differences in other perfusion parameters between bilateral vessels among mild stenosis cases (P>0.05). MTT and TTP of stenosis-side vessels were higher than those of contralateral side in moderate stenosis cases (P<0.05). In severe stenosis or obstruction cases, MTT and TTP of stenosis-side vessels were higher than those of contralateral side, while CBF and CBV of stenosis-side vessels were lower than contralateral side (P<0.05). Twenty-two in the 30 cases had perfusion abnormalities, and there was a significant difference between the stenosis side cerebral perfusion and the healthy side mirror area (P<0.05).
ConclusionCTPI can reflect brain tissue perfusion early and comprehensively, and fully reflect internal carotid atherosclerosis caused by severe stenosis or occlusion of cerebral hemodynamic changes, which provides important information for clinical treatment and helps clinicians to formulate individualized treatment plan.
Objective To observe and analyze the configuration and distribution of vortex veins by indocyanine green angiography (ICGA) combining with widefield contact lens system. Methods A total of 28 patients (32 eyes), including 16 females (19 eyes) and 12 males (13 eyes) with the age of 28-84 (average 71), were examined by ICGA combing with widefield contact lens. The patients were divided into high myopia group (15 eyes with diopter ge;-6.0 D) and non high myopia group (17 eyes with diopter lt;-6.0 D or normal sight). Results A total of 166 vortex veins were detected, including 118 circinate veins (71.1%), 34 thick-stripe-like veins (20.5%), and 14 irregular vein (8.4%). There are 71 vortex veins in the right eyes with average 5.07 vortex veins in each eye; and 95 veins in the left eyes with average 5.28 vortex veins in each eye. The number of vortex veins at in the inferior temporal, inferior-nasal, over-temporal and over-nasal retina was 47, 42, 39, and 38, respectively, with average 1.34 vortex veins in each quadrant (the inferiortemporal was the most: average 1.53). A total of 160 vortex veins came out from the scleral around the equator area 46 disc diameter (DD) away from the optic disc (964%); the other 6 vortex veins came out at the point 3-4 DD away from the optic disc (3.6%). A total of 123 (74.1%) vortex veins had ampullae with different directions. Horizontal and vertical ampullae were most common. There was no difference in numbers and configuration of vortex veins beween the two groups. Conclusion The vortex veins has circinate, thick-stripe-like, and irregular configurations; the distribution of vortex veins in eyes with high myopia or non high myopia is almost accordant. ICGA combining with the wide-field contact lens examination can observe all of the vortex veins within a single visual field.
Objective
To evaluate the application value of scanning laser angiography with a wide-field contact lens system in the diagnosis of choroidal melanoma.
Methods
Twenty-four patients with choroidal melanoma were randomly divided into two groups, who underwent fundus fluorescein angiography and indocyanine green angiography scanning with the wide-field contact and non-contact lens system respectively in order to acquire the 150deg;wide-field and 30deg;view image data. The quality of the images was comprehensively evaluated.
Results
Satisfying images were acquired from all of the 24 patients. Widefield contact lens system indicated the accurate adjacent relation between the lesion position and the other dissection mechanisms, and also provided the general information about the size of the tumor and the perfusion of fluorescien or indocyanine green in the blood vessels. At the same time, it enlarged the view scope 3-5 times, which make for the screening of the peripheral lesions.
Conclusions
Scanning laser angiography with a wide-field contact lens system has important application value in the diagnosis of choroidal melanoma.
(Chin J Ocul Fundus Dis, 2006, 22: 166-169)
The ability of quickscan(QS)to assess haemodynamically significant lesions in the iliac and femoro-popliteal arteries was studied.Quickscan was prospectively and independently compared to intra-arterial digital subtraction angiography(IADSA)of the iliac and femoro-popliteal arteries.In 176 patients 757 arterial segments were evaluated.A QS frequency ratio of 1:3 or greater had a sensitivity of 88%,a specificity of 94% and accuracy of 92% in detecting stenosisgt;5O% diameter(67% area)reduction as shown on IADSA.In the detection of occlusion,QS had a sensitivity of 91%,specificity of 95% and accuracy of 94%.There was significant correlation between area reduction found by QS and the calf/brachial pressure index(CBI)(r=-0.77,Plt;0.01).Thirty-seven patients underwent an angioplasty based on QS finding alone.All 37 were successful.The authors conclude that quickscan can provide an inexpensive,quick and non-invasive screening technique for the routine initial assessment of peripheral vascular disease.The results indicate that an agreement with angiography which is as good as duplex scanning.It has potential to replace angiography for workup prior to surgical or catheter intervention,in the assessment of the success of the procedure and its continuing follow-up.
Purpose
To analyse the maculopathy in 597 eyes of 317 cases with diabetic retinopathy,and to explore the classification and visual prognosis.
Methods
Using fluorescein angiography to examine the extend of capillary leakage and foveal avascular zone as well as the extent of the capillary closure in macular area.
Results
①Diabetic maculopathy was divided into 5 types,among 597 eyes,no leakage type 154 eyes (25.8%),focal edema type 188 eyes(31.5%),diffuse edema type (including cystoid edema)231 eyes(40.0%),ischemic type 12 eyes(2.0%) and proli ferative type was 4 eyes(0.7%).② There is close relationship between the classification and visual prognosis.such as when visual acuity was ge;0.5,no leakage type was 99.4%, focal edema type was 83.0%,diffuse edema type was 28.4%,ischemic type was 8.4%,and proliferative type was 0.5%.the visual acuity of cystoid edema was worse than diffuse edema only 20.3%.③The stage and visual prognosis:The higher the stage the worse the visual prognosis.if visual acuityge;0.5, 1 stage in 96.2% eyes,2 stage in 84.8%,3 stage in 53.2%,4 stage in 37.2%,5 stage in 12.5%.
Conclusion
Diabetic maculopathy is the main cause of visual impairment in diabetic retinopathy. Different type has different visual prognosis.macular edema and cystoid edema are the main factors to decrease visual acuity and could be treated by focal and grid laser photocoagulation to prevent visual loss.
(Chin J Ocul Fundus Dis,2000,16:144-146)
ObjectiveTo investigate the utility of indocyanine green angiography in flap reconstructive surgery and possibility of decrease the complications.
MethodsIndocyanine green angiography was performed on 14 patients undergoing flap reconstructive surgery between February and December 2014 to evaluate the blood perfusion of the flap and to adjust the operation plan. Of 14 cases, 2 were male and 12 were female, aged 23-58 years (mean, 35.5 years); 11 flaps were used for breast reconstruction [including 3 free deep inferior epigastric antery perforator (DIEP) flaps, 4 pedicled transverse rectus abdominis myocutaneous flaps (TRAM), 2 pedicled TRAM and free TRAM, and 2 pedicled latissimus dorsi myocutaneous flaps and prosthesis], 1 pedicled latissimus dorsi myocutaneous flap for repairing chest wall defect, 1 pedicled profunda artery perforator (PAP) flap for upper leg defect, and 1 pedicled descending genicular artery perforator flap for knee defect. The size of the flaps ranged from 9 cm×6 cm to 26 cm×12 cm.
ResultsA total of 32 indocyanine green angiography were performed. There was no adverse reactions to the infusion of indocyanine green. The surgery management was adjusted according to results of indocyanine green angiography findings in 5 of 14 cases. The distal part of flap were discarded because of poor perfusion in 3 cases (1 DIEP flap, 1 TRAM, and 1 PAP flap) and the other 2 cases (pedicled TRAM) needed additional free anastomosis to ensure sufficient blood supply (pedicled TRAM and free TRAM); the other flaps were harvested according to preoperative plan and repaired defect successfully. The mean follow-up was 5 months (range, 1-9 months). The other flaps survived without infection or fat necrosis except 1 PAP flap with distal necrosis.
ConclusionIntraoperative indocyanine green angiography can provide real-time information of flap perfusion and then the operation plan can be adjusted in time to ensure the flap survival.
Objective
To observe the characteristics of collateral circulation blood flow of ipsilateral ophthalmic artery in patients with internal carotid artery occlusion.
Methods
The imaging data of 20 patients with internal carotid artery occlusion were analyzed retrospectively. There were 11 males and 9 females, aged from 30 to 65 years, with an average age of (45±3) years. All the patients underwent digital subtraction angiography and transcranial Doppler examination, and 6 patients underwent simultaneous magnetic resonance angiography. The blood supply and collateral circulation of the ipsilateral ophthalmic artery were observed .
Results
All the patients had unilateral internal carotid artery occlusion. The blood supply of the ipsilateral internal carotid artery and ophthalmic artery comes from the collateral circulation between the middle meningeal artery branches of the external carotid artery and the ophthalmic artery in 18 patients (90.0%); it also comes from the anterior communicating artery of the contralateral internal carotid artery in 16 patients (80.0%); and the posterior communicating artery of the contralateral internal carotid artery in 12 patients (60.0%), respectively.
Conclusion
The blood flow of the ipsilateral ophthalmic artery mainly comes from the middle meningeal artery branch of the ipsilateral external carotid artery, also comes from the anterior and posterior communicating arteries of the contralateral internal carotid artery.
ObjectiveTo observe the clinical effect of the ophthalmic artery branch retrograde interventional therapy for central retinal artery occlusion (CRAO).
MethodsFourteen CRAO patients (14 eyes) were enrolled in this study, including 8 males and 6 females. The age was ranged from 35 to 80 years old,with an average of (56.7±20.3) years. The duration of occurrence after the onset was 9 to 72 hours, with a mean of 22 hours. There were 4 eyes with vision of no light perception, 5 eyes with light perception and 5 eyes with hand movement. The intraocular pressure was ranged from 14-20 mmHg (1 mmHg=0.133 kPa), with an average of 19 mmHg. All the patients received the treatment of ophthalmic artery branch retrograde interventional therapy according to the indications and contraindications of thrombolytic therapy in acute cerebral infraction patients. Micro catheters was inserted into the exposed arteries from a skin incision below the eyebrow under guidance of digital subtraction angiography (DSA), urokinase (total 0.4 million U) and papaverine 30 mg were injected into the arteries. After artery thrombolysis, the changes of DSA, filling time of retinal artery and its branches on fluorescence fundus angiography (FFA) within 48 hours and the visual acuity were observed. According to the visual acuity of post-treatment and pre-treatment, the therapeutic effects on vision were defined as effective markedly (improving 3 lines or more), effective (improving 2 lines) and no effect (change within 1 line or a decline). According to the arm-retinal circulation time (A-Rct) and filling time of retinal artery and its branches (FT) on fluorescence fundus angiography (FFA), the therapeutic effects on retinal circulation were defined as effective markedly (A-Rct 15 s, FT 2 s), effective (A-Rct was improved but in the range of 16-20 s, FT was in 3-8 s) and no effect (A-Rct was improved but 21 s, FT 9 s). The follow up ranged from 5 to 21days, with a mean of 6 days. The related local or systemic complications were recorded.
ResultsOphthalmic arterial catheterization under DSA was successful in all 14 eyes. After intermittent injection of drugs, ophthalmic artery and internal carotid artery displayed good images in DSA. The results showed enlargement of ophthalmic artery and its branches after injection of thrombolytic drugs by micro catheters. The circulation time in ophthalmic artery is speed up for 2 s before thrombolysis in 5 eyes, 3 s in 6 eyes, and 4 s in 3 eyes. Within 48 hours after thrombolysis treatment, the filling time of retinal artery and its branches on FFA was significantly increased than that of before interventional therapy. The retinal circulation was effective markedly in 8 eyes (57.1%), effective in 4 eyes (28.6%) and no effect in 2 eyes (14.3%). The vision changes showed effective markedly in 6 eyes (42.9%), effective in 6 eyes (42.9%), no effect in 2 eyes (14.2%). There was no abnormal eye movements, vitreous hemorrhage and incision hematoma, intracranial hemorrhage, cerebral embolism, and other local and systemic adverse effectives during the follow-up.
ConclusionsThe ophthalmic artery branch retrograde interventional therapy in the treatment for CRAO can improve retinal circulation and vision. And there is no related local or systemic complications.
ObjectiveTo evaluate the CT features of coronary artery aneurysm by coronary artery imaging on 128 slice CT and dual source CT (CTCA).
MethodsA total of 1 108 cases were prospectively examined using CTCA between March 2011 and April 2014. With volume rendering, maximum intensity projection, multiplanar reconstruction and surface reconstruction, we observed the coronary artery morphology and vascular wall condition.
ResultsThree cases of coronary artery aneurysm were found. In case one, the anterior descending branch (LAD) had grape-like prominency segmentally; in case two, LAD and left coronary circumflex branch (LCX) and right coronary artery (RCA) had diffuse dilation with local shuttle expansion; in case three, left main, LAD and LCX and RCA had diffuse expansion.
ConclusionCTCA is a noninvasive, simple and effective method for the diagnosis of coronary artery aneurysm, and it can be the first choice for the high risk population with coronary artery aneurysm.
