ht, and now we are back to our, 0:05 our main speakers for today. Again, as I mentioned at the beginning, are incredible. 0:11 Fellow team. The hall have a number of projects 0:17 ongoing and had been presenting all around the country in the world. So we get to hear some of their recent work 0:23 that was presented at the CNS and Kitano, I think you're going to be going first. Is that correct? 0:30 Yes, sir. All right. 0:40 Let me share my screen. 0:57 All right. Good morning, everyone. So today I'll be presenting on our final results of procedure and treat 1:04 mental post-op or the CSF leaks. We do ultrasound guided epidural about batch. And this is a talk that I gave us 1:10 an oral presentation on C and S in Austin. And really was the work of the entire spine theme here, 1:16 Mayo Clinic, Florida, as well as Dr. Dan and James West. 1:23 I don't have any disclosures relevant to this talk. And as you know, incidentally, 1:28 the rod them it is a very well-known complication of spine surgery. And if left untreated, it can lead to a persistence CSF leak course 1:35 to the meaning or seal the report. Their rate of incidental rather me ranges from four to 16 percent 1:41 depending on the index operation. And if patients develops symptoms of persistence, 1:46 CSF leak, first-line treatment, bed dressed. Other options include over solving the wound and placement of a lumbered train. 1:53 And there is the potential need of having to go back to the OR for direct repair. 1:59 While epidural blood patches are routinely used post anesthesia or LTBI CSF leaks. 2:06 They are not often use after spine surgery for their alchemy repair. The problem is that the ultrasound 2:13 is a great technique that allows radiation free and direct real-time visualization of the meaning of a seal, 2:18 the dura, and the toy needle. By this application in the native spine is often very limited. 2:23 That's magnified in the bus stop at the spine thanks to the bond work that has been done by 2:29 removing the bony anatomy and the ligamentous there, which allows a window for the ultrasound 2:34 and for the need of to be visualized properly. So in our study, we did a retrospective analysis of 2:41 patient than they were when the USC BPM, Mayo Clinic, Florida from 20092024 syndrome, 2:47 I think to the meaning the seal secondary to spine surgery. We collected demographic, procedural, and outcome characteristics. 2:54 The primary outcome of our study was ultrasound, EBP success. The final resolution of 2:59 the initial sync them, their brothers to them in English to clinical attention such as postural headaches, institutional leak. 3:07 So for our technique, patients that position prone, that ultrasound is used 3:12 to localize the pseudo, meaning the seal and the color Doppler can also be adopted to determine if there are any active sites 3:19 of leak of aggression. Under ultrasound guidance, 18 gauge toy needle 3:25 is advanced into the syllable, meaning the seal, and the content is aspirated, but neither is then advanced 3:31 into the epidural space. And about 30 a mile of autologous blood is injected into early in 3:36 five to ten and aliquots under continuous ultrasound guidance after waiting for five to ten minutes to 3:43 allow that blood backs to see it. The ultrasound is then used again to confirm the placement of the patch 3:49 and the color adopt. There can also be used to confirm an absence of CSF egress if there was previously identified. 3:56 So overall, we add fourth-year patients who underwent a total of six to one USC bps. 4:02 And you can see that the most frequent index operation was a laminectomy, 24.5%. 4:09 And about 36.7% of these cases where revision surgeries. And also there the 4:15 incident that the relative me was unrecognized during the surgery in about 22% of cases. 4:24 You can see here that the median time from Sir did the symptom development it was seven days. 4:30 And the most frequent presentations seen thumbs-up presentation where headaches in 64% of 4:36 cases and institutional leak in 26.5% of cases. Here, looking at the results of 4:43 the EBP under ultrasound guidance, you can see that 51% of patients experience resolution 4:49 of their seen them after their first blood batch. And you can see in the medium volume I separated 4:54 from the meaningless it was 34 and Mao. And also that another 20 percent 5:00 of patients experience resolution or they're seen them after subsequent attempts of blood patches. 5:07 We're talking about complication. We had about 14 percent complication in our series. 5:13 Send the most people. One was one infection in patients followed by meningitis. All seem to patients. 5:20 Get us a couple of illustrative cases. You can see here patients that present throughout AB fistula. 5:26 And here on the teeth of sagittal MRI you can see a fairly large to them in English seal. 5:32 After the patient had undergone laminectomy, it's a number variation or the AV fistula. And then Dipesh, and then when 5:38 they know if they're sound epithelium, but actually the contents of the pseudo, meaning the cmos aspirate to them but batch placed. 5:43 And then you can see on the post-operative MRI sagittal cut, there was than one month after the procedure, 5:50 complete resolution or the pseudo meaning Lucille. This is another case of 5:55 a patient that lemon Act. And as you can see here on the CT scan, on the level of bullet previous fusion construct. 6:01 And there is an IPO density, there have a collection fluid collection. There was also again identified under 6:07 ultrasound where you can see the star there. And then the color Doppler was used to identify the active CSF aggression there. 6:14 The toy needle you can see here in white where this big arrow is, it's inserted the continents 6:20 zooming basileus aspirate as you can see in figure E. And then the blood patch is placed. 6:25 And this is a post-operative scan, documents resolution or the pseudo meaning the seal. 6:30 So our study carousel delimitation of all single institution or retrospective studies therefore fired 6:36 their prospective them with this enter establish that are needed to confirm the generalized ability of our data. 6:42 But our study is the first and the largest series describing the adoption of us EBP. 6:48 Impatient percent thing with persistence to the meaning the seal and CSF leak following spine surgery, 6:54 we've found an overall success rate of over 70 percent with the first attempt success rate of 50 percent. 7:01 So this suggests that the utilization of us guided EBP in expert Han may allow for targeted treatment of 7:07 a large portion of symptomatic post-operative sort of meaningless seals. Thank you. Okay, tunnel 7:18 and it's excellent work. Congratulations. That's a novel treatment for these non uncommon problems. 7:25 Well, one thing that I realized I never asked Dr. Miller, Dr. Clinton, and what's the consistency of 7:30 the blood that you're using is the patch and how long is it in-between obtaining the autologous blood 7:37 and actually injecting it? I don't know about the time between 7:43 when the blood is drawn and Jack this or buy most of them. I believe it may have been dying 7:48 this at the same time with the procedure, sir. Yeah. But I mean, they they aspirate 7:54 and immediately give it didn't I was just curious about how thick the blood is. Maybe a layered I see doctrine Mahasi, 8:02 like Yeah, I do some of these as well. How can we go right away for the blood? 8:08 So it's right from an IV catheter into the epidural space. But what's really helpful 8:13 is the tissue fibrin glue. So it's like an IRA, you know, human hybrid components that 8:19 we inject and that solidifies much, much quicker and it's much more firm. So you know what the blight, 8:25 It's thinner and can get into different crevices while the firearm lose a bit more firms, you try to get 8:30 both properties and they're right at the week. Excellent. Yeah, thanks. Thanks Tiana crushing the inlier. 8:35 Did you want to Here hand up there, you want to make a comment? Yeah. 8:41 Yes. Sorry. I can't join on camera because I'm I'm tied up in the hospital. 8:47 But I will like to second-most comments I've done this cup, this case is Dr. Quint then 8:53 and a lot of times what we do is we place an arterial lines so that way we can reliably draw blood right away as soon as 8:59 axises identify with the ultrasound machine. And you have fiber 9:05 and who is also been something you that's very helpful for this cases. One question that I had, 9:11 and it's something that we always worry about is the risk of infection and meningitis and 9:17 is interesting from the data present. It's too, I believe. Any thoughts stone, 9:24 you're looking at the data and it's anything that we can do to make things better or reduce that risk score is 9:30 contributed directly to the to the block itself or how their circumstances are 9:36 most patients, they got infections. Thank you. Yes, sir. Excellent question as he said. 9:42 Oh yeah, we have about two patients and by 4 percent, for our cities, small cities is difficult to generalize 9:49 if that's really a 4% for the procedure itself. But it was assumed to be array was 9:54 many jaggedness seem to be related to the procedure, not like a UTI or any other infections. 10:05 Let's see. We have a question from 10:11 Dr. Vargas about what what about the presence of fibrous tissue after the procedure? 10:17 I think. Yeah. So hold it down and I have a scar and that sort of thing. Yeah. 10:22 So these are usually done right after the procedure. It's not too long and that's why it's very difficult to 10:28 do them anatomically guarded. That's why they used facade. The ultrasound really helps to visualize the anatomy. 10:34 And that's far we didn't have any issues as far as fiber going through a fiber species. Are the patches. 10:41 Great. Well, thank you so much. Tana. Yeah. 10:46 A couple more points here, Dr. Dean mentioned would emphasize the need to make sure the patient is a febrile and has 10:52 normal white blood cell count prior to the blood patch. And I know that's that's part of 10:57 the protocol. And a good point. Some of these patients are immediate post-op prove. 11:03 They have an immediate postoperative status. So they might have an elevated white blood cell count just from surgery. 11:08 But yet very, very good point. So I'll relax. 11:14 So excellent workday Taino, and we will go on to the next presentation. "SPECT-CT as a 11:21 We have Dr. Garcia who's going to be presenting next. 11:27 Can you see this darker folks? Yes. It's advancing by itself. 11:34 Alright. So morning everyone. Today I'm going to be presenting on SPECT CT is a pretty curved pain generators and patients 11:40 undergoing intra-articular injections for neck and back pain. I think most of you already know this project. 11:46 It's a project that we did with the spine group and on the particular mentorship up to our body Yammer. And we presented it at 11:52 Austin at the Commerce Search. And so as you know, low back pain and also neck pain. 11:58 But there's a lot more literature on low back pain is one of the main leading causes of disability in general. 12:04 And yet, the identification of painful generators is still difficult, spite of use of multiple morphological base studies 12:12 including X-ray, CT, MRI. And also compounded by the fact that sometimes structural abnormalities are found 12:19 on scans have no direct correlation with the actual pain of the patient, which makes the correct identification of 12:26 the painful generator difficult and therefore, the targeted treatment for that painful generator 12:31 also difficult and limited. With this in mind, there have been some interest in functional based tests 12:37 like SPECT to accurately identify those painful generators. 12:42 And more recently, a scan has been a valve which is called hybrid SPECT CT, 12:48 which at Mayo we have been fortunate, have available for a number of years and we're good quality as I'm going to show 12:54 and one of the examples camps. So the idea here was to look at for set joint injection started 13:00 injections and see whether or not the hypothesis that injections targeted ad positive sites of uptake 13:07 would do better than injection was targeted for sale without uptake. So to accomplish this with design, 13:13 the study was single institution retrospective, in which we compared both short and long-term outcomes 13:19 for patients undergoing a saturated injections for neck and back pain. And given the large sample size, 13:25 I was able to do a propensity score match to adjust for age, gender, BMI, hypertension, and multiple target injections and 13:31 injection location did exclude sacroiliac joint injections. Given that they're a bit 13:37 different and they should not be grouped how the same with cervical, thoracic and lumbar injections. 13:43 So these were our main outcomes. We looked at immediate positive response, change in VAS two weeks after injection, 13:51 improvement in VS above 50 and 70 percent after injection and needs for additional treatment, 13:56 both injection and surgery. Importantly, add mayo. We have people who do call these patients to 14:03 access the procedure who are not implicated in the research. So they're able to give us 14:08 an unbiased feedback from the patients with our official report outcomes, which allowed us to 14:13 really objectify this outcomes. So as you can see, we have a large number of patients, 14:19 2849 patients that were evaluated with SPECT CT. Within five years out 14:25 of this one as we had three for 340 with the set injections within a 150 days after SPECT CT. 14:31 Why a 150 days? We had to choose a threshold. There is no specific 14:36 literature on the threshold. We just had to come up with a threshold that would allow us to look at outcomes that 14:41 were associated with injection, not associated with something else I could have happened in the interlude. 14:47 So we had a total of a 140 surgical injections, 21 thoracic injections, 14:52 and 207 lumbar injections. Importantly 265. Where uptake targeted injections by this 14:58 we mean that all the injections with targeted for Sarah, Bob take all of them. That was our definition 15:04 of uptake target injections and 75 or none uptake targeted injections. So as you can see here, just an 15:09 example of a SPECT CT and male with in this particular patient or ride L4, L5. 15:16 If I said join having uptake that was targeted by injection, this is actually one of the cases there was included in the study. 15:22 So here just some demographics and characteristics of the location and characteristics of the injection. 15:28 As you can see, even though there's nothing that is statistically significant, they can always compound and have an effect, 15:34 a confounding effect on the variables. Hence, why we did the propensity score match to adjust for all these variables. 15:41 And what you can see here is that both on a unit variable analysis and the multivariable analysis, 15:46 we did not find statistically significant differences between not non uptake 15:52 and uptick targeted injections. But when we did look at patients who already had a failed injection before 15:58 the SPECT CT in which the surgeon or procedures was able to change the target page 16:03 based on the information of the SPECT CT. Here below, what you can see is that in those patients we do have a benefit. 16:10 And the benefit was particularly greater if there was any change made on a target. So that is very 16:16 suggestive that for a particular set of patients. Adequate patient selection, you do see a benefit with SPECT, 16:22 CT to guide, etc, and injections. So basically our conclusions seem to 16:29 support that pending adequate patient selections, satiety has a benefit 16:34 in guiding facet injections. There are limitations, of course, with our retrospectives 16:39 seeing institutions study, but we did use a propensity score tonight for confounding variables. We have a large sample size. 16:45 But of course, a future directions would have to be prospective, multi-site, 16:51 hopefully double-blind clinical trial to accurately discern the impact of SPECT, 16:57 CT and routine clinical practice. And I'll take any questions. 17:07 Excellent Diego, really fabulous work. And I think this is yeah, 17:14 there's so much potential applicability to using imaging biomarkers 17:19 for better delineating patient's pain. In this, even with 17:25 the precision of these specs studies, it shows how challenging it can be 17:32 to figure out pain generators in the spine. And I think this is incredible work with 17:37 a lot of promise based on what you've seen so far. Could you think, I mean, do you think they 17:43 should we should be doing this more or less? Or do you think people should have, have this up front of me? 17:48 How do you recommend we use this based on your knowledge of the technique in our everyday practice. 17:54 So in a patient with IDC have a benefit where patients in which there were had already been an attempt at an injection. 18:01 So because my understanding is that's equity is but not necessarily specific. 18:06 So it's difficult to figure out which of those facets are lighting up are the ones that are actually causing pain. 18:12 So when we have the benefit of having a patient that already had a procedure, it had failed. We do know which of 18:17 those joints to light it up, but it's not the actual painful generator. So we can take those out and pursued next ones. 18:24 So I do see FAT City are not as unnecessary first-line for any patient that has the first procedure. 18:30 But for a recurrent setting injection per patient who has not benefited from a percent injection, 18:35 I will definitely see benefit there. But of course, I think to actually make a recommendation would have to have double-blind clinical trials 18:42 so it can make a recommendation. Hopefully coming, Hope we felt 18:48 the end and we'll continue to learn more about these imaging biomarkers, which I think will be very helpful. 18:53 Dr. Dean makes a great point in the comments as well that we have extremely high-quality SPECT study. 18:58 Is it Mayo which I completely agree at UF, we didn't do this at all. So this was, this was something novel to me 19:05 senior and very impressed with the quality of the studies. So excellent work. All right. 19:12 I think we can move on now to our next presentation. 19:17 Dr. Be vesper try though, who is going to be speaking about supramarginal resection impact on 19:24 overall survival for IDH wild-type glioblastoma. Okay. Perfect. Can you hear me now? 19:31 Yes. Yes. Thank you. Try today. Let me share screen here. 19:37 All right. Are you seeing my slide? Yes. Perfect. "Supramarginal 19:46 Good morning, everyone. Thank you for attending this lecture today. So I'm going to present our study that 19:54 started presented in October this year and CNS. And the title of the study support margin our resection 20:00 impact on overall survival for IDH1, blah, blah. So my according to their cell density distribution 20:05 on the protection profile, the same month on bottom. So we have now these contours 20:13 for this lecture. So a bit of background regarding the center of our section on glioblastoma. 20:18 We know that no long ago they must come on, Sorry, NCA recommendation for 20:24 glioblastoma to perform only a biopsy. And this was not only in the United States but worldwide, 20:30 but seeing that too tough since we started seeing very important studies from doctrinal 20:36 across from Dr. McGurk, from Dr. Sinai, from UCSF with Dr. Berger, 20:45 and from China and split this data from updates that of 20:51 these studies favor or perform a more extensive surgical resection 20:57 on patients with glioblastoma. And their results were pretty much homogeneous. 21:03 Identifying that at resections about 78% of a contrast enhancement and T1, 21:10 where we were associated with a significant improvement in 21:16 overall survival in patients with GBS. But furthermore, we see that 21:23 the gross total resection is days, you say, is 21:28 this complete surgical resection or the contrast and husband component of the tumor. 21:34 And you can see up here. But what about day blur? I'm putting a T2 sequence 21:40 that we have now and for, for a while already that there are infiltrated GPM cells within the brain tissue 21:47 that most of the time is being taken care of, 21:54 resected because of day. People traded behavior of this, 22:01 of these cells within the brain. That if you were saying that I do can cause a devastating 22:07 dimensionality of the patient. So we end with other group and may have 22:12 plenty to start looking at the extent of the supramarginal resection, be John, the margins of 22:18 the contrast enhancement and tumor. And we have seen that regarding this topic, 22:24 that is B has been replaced by results from the from the boot, 22:31 results from external precession beyond the margins in the luxury player them as we see here, 22:38 very important papers from the MD Anderson, from Hopkins, from Cleveland Clinic, and from UCSF. 22:46 And not all of them have homogeneous results as we 22:52 found before in the, in the Coursera restriction for the T1 contrast. 22:59 So we're going to give it a shot. And thanks to all of the data 23:05 that we have made a clinic without the high flow of patients we were, we were able to do 23:11 this study in which we identify more than 800 patients and we selected 23:17 only those patients that were IDH mutants. This is the most aggressive type of 23:22 GBM that has a, a, a, a less overalls Bible in total only selected those patients. 23:30 That had a grocer urbanization of the contrast enhancement. 23:36 And that they did present before the surgery with some degree of pre-operative pillar. 23:44 So in total we including 101 patients, we we perform all photometric analysis 23:51 on all the sequences in the, in the contract and constant in DNA cross is part and in differ for all the patients. 24:00 And we did find a univariate, multivariate analysis that the increase 24:06 in SMR as a continuous viral for the first time we showed that is that is statistically 24:11 significant for an increase and improve overall survival in our patient population. 24:18 And furthermore, when we perform a nutritional analysis, we found that those restrictions 24:24 about 20 percent and 60 percent of words that were related with a significant increase in number algebra, 24:31 Bible. So to summarize our findings, we did this illustration that 24:38 shows that the green part and they were in proportion, or the percentage is from 24:44 above 20 and 60 percent were related. We can improve plurals for Bible. And we didn't find a significant benefiting 24:51 those restrictions about 60 percent, that is the red portion of the figure here. 24:57 So now we know that increasingly summarize beneficial for, for, for, 25:03 for finding profiles for wavelength in our patients would IDH type wild-type GPM. 25:09 But we know that there's a falsely high variability in their ideological presentation of 25:16 our group in general and GBM, but also in ideation. So we partner with 25:21 the mathematical neural colleague laboratory. I may have been the Arizona with Dr. Christina. So insulin to try to 25:29 further personalize they they they are to try to be more specific with 25:38 using a specific patient characteristics from their ideological data. 25:43 And we can see that follow in our hypotheses at the center of the, of the, of the, of the lesion. 25:51 They wonder is in close proximity with the contrast enhancement our acid greater or more burden. 25:58 So our concentration over there. And once you're going to the periphery, you see that the low density, 26:04 the density of these tumor cells is, is slower. So this is the formula that we 26:11 use in our patient population. In summary, for dangerous or down, you can see that in the one with contrast, 26:18 devolving was approximately one is spherical shape. And we saw that they, these hard, 26:25 this portion has a greater cell density compared to the cell density in the T2 flair. 26:33 So with these results, we classify our patient population 26:38 in three groups that were nodular, moderately diffuse, and highly diffuse according to their, 26:44 to their, to their, to their tumor cell density and distribution profile. 26:50 So this is a representation from some of the patients that were 26:56 selected and classify and including this. Groups, you can see here and binocular, they have more contrast enhancement 27:04 than blur and seeing them well it'll diffuse. You see that there is a, some more player in the patient's surrounding 27:10 a tip as well lenient on T1. I think the highly perfused you see that 27:16 the variance is greater than the other groups. So producing the univariate analyses, 27:23 we saw that the US seem statistically significant only for moderate 27:29 and diffuse and highly diffuse. Okay. But it wasn't significant or not there. 27:34 This is in univariate. And the same results were obtained for a multi-barrier now that we see was 27:41 statistically significant for monetarily and how they diffuse or another by when we perform a treasure analysis, 27:48 we saw that the nodular there is actually a benefit only in 27:54 resections from 10 to 10 percent. And this is kind of 27:59 logical because the Northern learned there is not much clear as we showed you in the in the MRI before. 28:07 So there's no much benefit in extending the intersection beyond the 28:12 20% of the contrast enhancement. And they know the red group in their motherly diffuse, 28:18 we found benefits from all the way up to 50%. You can see here in the highly diffused, 28:25 we only saw benefits beyond 30 percent, all the way up to 90 and 90 plus percent. 28:32 So this is very important because now we can, based on this study, 28:38 at least in these results, we see that there is a very important benefit in the, 28:44 in the supramarginal resection of these patients. And of course, based on 28:50 their biological characteristics before the surgery, the surgeons can decide 28:56 how much the patient can need a, need a resection, and extent of resection base and decent. 29:02 For example, in these highly tumors, we found that this is the maximum SAMR really 29:10 correlated with Albert DeSalvo. So bible, you can see that the patients that had every section 29:15 above 90 percent with they once had a better overall should, why would that be one that 29:21 had less than 90 percent? And these patient populations had a greater survival of, let's see. 29:29 If I remember correctly, almost nine months greater than the patient that had a resection or with less than 90 percent. 29:37 For them modally diffuse, the highest SAMR percentage was 50. 29:42 And these patient presented with a benefit. I'm opening up an additional seven months. 29:50 And in the nodal or patients, the highest maximum significantly co-related would be shallower 29:57 as Weber was 20 percent. And these patients had a, a, an additional overall survival or 10 months. 30:04 So to summarize, for all our findings, they might go it's an iron or elsewhere Bible in ideas, 30:09 whilst the CAPM is influenced by the degree of tumor invasiveness, a result showed an increase 30:15 in SMR is associated with they suddenly become beneficial overall survivor in moderate and highlight the idea that GBM, 30:22 I did that in traditional analysis 90, 50, and 20 percent work on the upper limit, 30:27 That's MR. percentage associated with They'd been a pizza overall survival and kind of diffuse mode earlier refused. 30:33 I know that are timeless respectively. So that's all that we have for today. 30:40 Thank you very much for attending any questions. 30:49 Great work. Really interesting stuff. And I don't really do tumor work anymore. 30:56 But one question I had from my perspective is this all seems to make really good sense to me given the nature 31:01 of gliomas and how invasive they are into the brain. If you're able to resect the rim around the tumor, 31:07 you'd have better survival. I'm just curious. Do you think there is any kind of 31:12 selection bias as to who does better based on just where the tumor is. Because if you're next to an eloquent area, 31:19 of course he can't do that. Or how did how do you mitigate that isn't does that mean more awake 31:24 surgery for these tumors, which I know we do a lot of here, but maybe other places don't do so much. 31:31 So what do you, what do you recommend about that? Yes, of course, we will 31:36 talk about beta for dangerous of time. We've already included here, but yeah, tumor occasional was so associated with it. 31:43 The overall survival of patients and of course, obey of the tumor, 31:49 they were located you plug child areas are where we had a deeper location or proximity with the actual ventricles 31:56 had a a worst prognosis. And and of course, I mean, it is easier to add 32:02 to a greater restrictions on, on, on those tumors that are located a non elephant 32:07 parts of the brain, of course. So, but yeah, but to mitigate those challenges, 32:14 we recommend that, you know, most of the cases that can be should be 32:20 performed with an awake brain surgery, you know, in, in correlation with 32:25 narrow physiological monitoring and all these two to try to prevent any further functional. 32:33 Now, BAM machine, the patient has been proven also. 32:39 And he doesn't matter how great the restriction that he said 32:44 accomplish if they don't cost that much in the functionality of the patient. All these benefits will be overcome by day. 32:53 They decrease overall survival and the quality of life of the patient. If they have a a a baby up their surgery. 33:00 Yeah. I mean, that's a really good point because that data is out there with the, with the neurologic deficit there, 33:06 any survival benefit goes away. Watching the tight rope between 33:12 resection and maintaining neurologic function. And very interesting, great work. 33:17 Well, congratulations to all three of you. This is truly amazing as I put in the chat, I'm, I'm, 33:23 I'm frequently blown away by what our fellows are doing, how hard you guys all work in 33:30 all three shields and your dedication is truly incredible. So it's 33:35 a real pleasure to work with you guys. And I made them feel very fortunate to to have that opportunity. 33:42 So there are not any other questions. I think we're 759, 33:47 we're right on time and hope everyone has a great week. Thank you for joining us and see you soon