scholarly journals Computed Tomography Image under Three-Dimensional Reconstruction Algorithm Based in Diagnosis of Renal Tumors and Retroperitoneal Laparoscopic Partial Nephrectomy

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Haijie Zhang ◽  
Fu Yin ◽  
Liyang Yang ◽  
Anqi Qi ◽  
Weiwei Cui ◽  
...  
Keyword(s):  
Computed Tomography ◽  
3D Reconstruction ◽  
Partial Nephrectomy ◽  
Three Dimensional ◽  
Reconstruction Algorithm ◽  
Ct Images ◽  
Renal Tumors ◽  
Dimensional Reconstruction ◽  
Group A ◽  
Group B

This study was to explore the clinical application value of computed tomography (CT) images based on a three-dimensional (3D) reconstruction algorithm for laparoscopic partial nephrectomy (LPN) in patients with renal tumors. 30 cases of renal cell carcinoma (RCC) patients admitted to the hospital were selected as the research objects and were rolled into two groups using a random table method. The patients who received PLN under the three-dimensional reconstruction and laparoscopic technique were included in the experimental group (group A), and the patients who received LPN using CT images only were included in the control group (group B). In addition, the treatment results of the two groups of patients were compared and analyzed. Results. The effective rate of the established model was 93.3%; the total renal arteriovenous variability of group A (13.3%) was higher than that of group B (6.7%), and the operation time (131.5 ± 32.1 minutes) was much lower than that of group B (158.7 ± 36.2 minutes), showing statistical significance ( P  < 0.05). Conclusion. CT images based on 3D reconstruction algorithms had high clinical application value for LPN in patients with renal tumors, which could improve the efficiency and safety of LPN.

scholarly journals The role of three-dimensional reconstruction in laparoscopic partial nephrectomy for complex renal tumors

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Jipeng Wang ◽  
Youyi Lu ◽  
Gang Wu ◽  
Tianqi Wang ◽  
Yongqiang Wang ◽  
...  
Keyword(s):  
Renal Function ◽  
3D Reconstruction ◽  
Partial Nephrectomy ◽  
Three Dimensional ◽  
Laparoscopic Partial Nephrectomy ◽  
Reconstruction Technique ◽  
Group A ◽  
Group B ◽  
Mass Volume

Abstract Background To evaluate the role of three-dimensional (3D) reconstruction technique in renal function protection and ipsilateral parenchymal mass preserved after laparoscopic partial nephrectomy (LPN) in patients with complex renal tumor (R.E.N.A.L.score ≥ 8). Methods A retrospective study enrolling 49 patients who suffered from RCC and underwent LPN at our center, from October 1, 2017, to October 31, 2018. Twenty-one patients (group A) underwent LPN with the 3D reconstruction technique before surgery, and the other 28 patients (group B) not. Preoperative and postoperative ipsilateral parenchymal mass volume and ipsilateral glomerular filtration rate (GFR) were analyzed 3–5 days prior and 3 months after PN. In order to compare the two groups, Mann-Whitney U test and chi-square tests were performed. The main limitation of this technique is that the volume calculations are partly performed manually. Results All patients’ median renal score was 10 with no difference between the two groups (P = 0.89), and the median tumor size of the two groups was 3.2 cm (group A) and 3.3 cm (group B) respectively (P = 0.14). In addition, the median warm ischemia time of the two groups was 21 min (group A) and 26 min (group B) (P = 0.003). In group A and group B, the rate of preserved global GFR was 88% and 86% (P = 0.06), preserved ipsilateral GFR was 80% and 77% (P = 0.01), and preserved ipsilateral parenchymal was 84% and 80% (P = 0.03) separately. Conclusion 3D reconstruction technique was a beneficial method for more renal function and more preserved renal parenchymal mass volume after LPN. Trial registration Yantai Yuhuangding Hospital, YHD[2017]212. Registered 1 January 2017 (prospectively registered), http://www.ytyhdyy.com/nav/103.htm.

scholarly journals Three-Dimensional Reconstruction Algorithm of Computed Tomography Imaging for Surgical Treatment and Rapid Rehabilitation Nursing of Renal Cell Carcinoma

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Lijun Wang ◽  
Haiyan Lin ◽  
Hong Zheng ◽  
Yuying Jiang
Keyword(s):  
Computed Tomography ◽  
3D Reconstruction ◽  
Renal Cell ◽  
Three Dimensional ◽  
Life Quality ◽  
Reconstruction Algorithm ◽  
Nursing Intervention ◽  
Ct Images ◽  
3D Ct ◽  
Self Rating

This study was carried out to explore the promotion role of computed tomography (CT) imaging three-dimensional (3D) reconstruction technology and rapid rehabilitation nursing intervention (RRNI) in the treatment of patients with renal cell cancer (RCC) laparoscopic radical nephrectomy (LRN) in view of the patient’s condition. 98 RCC patients who were admitted to the hospital from July 2019 to July 2020 were selected as the research subjects, and all patients underwent the LRN and the RRIN. Of which, 46 RCC patients were scanned with CT images (regarded as the CT group), and 46 RCC patients were scanned with CT images based on 3D reconstruction algorithms (regarded as the 3D CT group). The clinical efficacy and the life quality, pain degree, and adverse mood changes before and after the RRN were analyzed and compared. The results showed that the surgery time in the 3D CT group and the CT group was 130.2 ± 42.8 minutes and 162.4 ± 38.5 minutes, respectively ( P < 0.05 ). The recurrence rate of RCC in both groups was 0%. The estimated blood loss in the 3D CT group and the CT group was 93.6 ± 35.5 mL and 90.3 ± 40.2 mL, respectively; the complication rate in the 3D CT and CT group was 5% and 12%, respectively; the hospital stay in the 3D CT and CT group was 12.5 ± 4.7 days and 12.1 ± 3.2 days, respectively, which had no statistical significance ( P > 0.05 ). The scores of visual analogue scale (VAS), 36-Item Short-Form Health Survey (SF-36), self-rating depression scale (SDS), and self-rating anxiety scale (SAS) of patients in the two groups were statistically significant ( P < 0.05 ). It indicated that CT images based on the 3D reconstruction algorithm could be applied in LRN of RCC patients to shorten the surgery time and improve the surgical effect, and implementation of the RRN could relieve the adverse mood of RCC patients and effectively improve their life quality.

Laparoscopic versus open partial nephrectomy for the management of highly complex renal tumors with PADUA score ⩾10: A single center analysis.

2021 ◽  
pp. 039156032110016
Author(s):  
Francesco Chiancone ◽  
Marco Fabiano ◽  
Clemente Meccariello ◽  
Maurizio Fedelini ◽  
Francesco Persico ◽  
...  
Keyword(s):  
Partial Nephrectomy ◽  
Operation Time ◽  
Renal Tumors ◽  
Open Partial Nephrectomy ◽  
Estimated Blood Loss ◽  
Significant Difference ◽  
Operative Complications ◽  
Group A ◽  
Group B ◽  
Post Operative Complications

Introduction: The aim of this study was to compare laparoscopic and open partial nephrectomy (PN) for renal tumors of high surgical complexity (PADUA score ⩾10). Methods: We retrospectively evaluated 93 consecutive patients who underwent PN at our department from January 2015 to September 2019. 21 patients underwent open partial nephrectomy (OPN) (Group A) and 72 underwent laparoscopic partial nephrectomy (LPN) (Group B). All OPNs were performed with a retroperitoneal approach, while all LPNs were performed with a transperitoneal approach by a single surgical team. Post-operative complications were classified according to the Clavien-Dindo system. Results: The two groups showed no difference in terms of patients’ demographics as well as tumor characteristics in all variables. Group A was found to be similar to group B in terms of operation time ( p = 0.781), conversion to radical nephrectomy ( p = 0.3485), and positive surgical margins ( p = 0.338) while estimated blood loss ( p = 0.0205), intra-operative ( p = 0.0104), and post-operative ( p = 0.0081) transfusion rates, drainage time ( p = 0.0012), pain score at post-operative day 1 (<0.0001) were significantly lower in Group B. The rate of enucleation and enucleoresection/polar resection was similar ( p = 0.1821) among the groups. Logistic regression analysis indicated that preoperative factors were not independently associated with the surgical approach. There was a statistically significant difference in complication rate (<0.0001) between the two groups even if no significant difference in terms of grade ⩾3 post-operative complications ( p = 0.3382) was detected. Discussion: LPN represents a feasible and safe approach for high complex renal tumors if performed in highly experienced laparoscopic centers. This procedure offers good intraoperative outcomes and a low rate of post-operative complications.

scholarly journals Three-dimensional laparoscopic partial nephrectomy for renal hilar tumors: an empirical analysis of 290 patients

2020 ◽  
Author(s):  
Feiya Yang ◽  
Lianjie Mou ◽  
Nianzeng Xing
Keyword(s):  
Partial Nephrectomy ◽  
Preoperative Evaluation ◽  
Three Dimensional ◽  
Intraoperative Ultrasound ◽  
Operation Time ◽  
Laparoscopic Partial Nephrectomy ◽  
Renal Tumors ◽  
Significant Difference ◽  
Group A

Abstract Objective To explore the feasibility of laparoscopic partial nephrectomy(LPN) in the treatment of renal hilar tumors. Methods Clinical data of 290 patients undergoing laparoscopic partial nephrectomy from January 2013 to August 2019 were retrospectively analyzed, including 27 patients with renal hilar tumors and 263 patients with non-hilar renal tumors. Perioperative data and follow-up results were compared between the two groups. Results Tumor size in Group A is smaller(2.97±0.88 vs 3.55±1.46,p<0.05), R.E.N.A.L. nephrometry score of Group A is higher(8.4±1.3 vs 6.5±1.7,p<0.01).The operation time, WIT and intraoperative blood loss in the Group A were slightly higher, but with no statistical difference (p>0.05). There was no significant difference between the two groups in intraoperative ultrasound rate, collection system repair rate, drainage time,postoperative hospital stay, and eGFR changes (p>0.05).The median follow-up period was 40 months. One patient with postoperative pathologic report of angiomyolipoma was found tumor recurrence and was currently undergoing regular reexamination. Conclusion Three-dimensional laparoscopic partial nephrectomy for renal hilar tumors is safe and feasible after detailed preoperative evaluation of the tumor and selection of appropriate surgical strategies.

scholarly journals Comparison of three dimensional reconstruction and conventional computer tomography angiography in patients undergoing zero-ischemia laparoscopic partial nephrectomy

2019 ◽  
Author(s):  
Xiaorong Wu ◽  
Chen Jiang ◽  
Guangyu Wu ◽  
Chao Shen ◽  
Qibo Fu ◽  
...  
Keyword(s):  
Renal Function ◽  
3D Reconstruction ◽  
Partial Nephrectomy ◽  
Three Dimensional ◽  
Renal Tumors ◽  
Feeding Artery ◽  
Zero Ischemia ◽  
Computer Tomography Angiography ◽  
Conventional Computer

Abstract Background: Advances in the three dimensional (3D) reconstruction and printing technology have fueled a rapidly growing interest in its applications in the field of urology. To our knowledge, the experience on the use of 3D reconstruction to facilitate zero-ischemia partial nephrectomy (PN) remains sparse and the role of 3D reconstruction is still needed to be defined. This study aimed to assess the role of three-dimensional (3D) reconstruction and conventional computer tomography angiography (CTA) in zero-ischemia laparoscopic partial nephrectomy (LPN). Methods: A total of 60 consecutive patients undergoing zero-ischemia LPN between October 2017 and March 2018 underwent CTA (CTA group including 30 patients) and 3D reconstruction (3D group including the remaining 30 patients) were included. 3D reconstruction and CTA images were prepared which were used to demonstrate the number and spatial interrelationships of the location of renal tumors and tumor feeding arteries. These radiology findings were directly correlated with intraoperative surgical findings at laparoscopy. Demographics, perioperative characteristics and renal function were compared between groups. Results: CTA and 3D reconstruction were successfully performed without any related complications. All the procedures were performed successfully without conversion to main renal artery clamping. Preoperative 3D reconstruction identified that 15 patients had only one tumor feeding artery, 12 had two, and another 3 had three, while the conventional CTA revealed that 22 patients had one tumor feeding artery, 8 had two (P>0.05). The mean operation time was shorter and estimated blood loss was less in the 3D group (P<0.05). 3D reconstruction group resulted in more accurate dissection of tumor artery (91.7%) as compared to conventional CTA (84.2%). There were no statistical differences in the baseline characteristics and renal function outcomes between two groups. Conclusions: 3D reconstruction can provide comprehensive information for the preoperative evaluation and intraoperative orientation that may facilitate tumor resection during zero-ischemia LPN for renal tumors.

Surgically Relevant Morphological Parameters of the L5-S1 Interlaminar Window: A Statistical Analysis Based on 3D Reconstruction of CT Data

2021 ◽  
Author(s):  
Dongdong Wang ◽  
Guoxin Fan ◽  
Bangde Yin ◽  
Zhi Zhou ◽  
Minfei Qiang ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Spinal Surgery ◽  
Posterior Approach ◽  
Three Dimensional ◽  
Left Shoulder ◽  
Epidural Puncture ◽  
Group A ◽  
Ct Data ◽  
Group B ◽  
Endoscopic Spinal Surgery

Abstract Study design: Retrospective study. Objectives: The interlaminar window is the most important anatomical corridor for posterior approach of lumbar procedures. Three-dimensional (3D) reconstruction of the L5-S1 interlaminar window may benefit the accurate measurement and assessment of surgical considerations. The aim of this study was to measure surgical relevant parameters of the L5-S1 interlaminar window based on 3D reconstruction of lumbar CTs. Methods: 50 thin-layer CT data were retrospectively collected, segmented, and reconstructed. Surgical relevant parameters included the width, left height, right height, interpedicular distance, area, and operable area of the L5-S1 interlaminar window. Morphological measurements were performed independently by two experienced experts. Patients with radiologic abnormalities at L5-S1 level were regarded as group A (n=28), while those without L5-S1 disc herniation were regarded as group B (n=22). Results: The average left height, right height, width, and area of the L5-S1 interlaminar window were 9.14±2.45mm, 9.55±2.56mm, 23.55±4.91mm, and 144.57±57.05mm2. The average interpedicular distance (IPD) at superior, middle, and inferior pedicle level were 29.29±3.39mm, 27.96±3.38mm and 37.46±4.23mm, with significant differences among these three parameters (P<0.05). The average operable areas of the L5-S1 interlaminar window were: left-axilla 24.52±15.91mm2, left-shoulder 27.14±15.48mm2, right-axilla 29.95±17.17mm2, and right-shoulder 31.12±16.40mm2 (P>0.05). There were no significant differences between group A and B in these parameters (P>0.05), except the inferior IPD (36.69±3.73mm vs 39.23±3.01mm, P=0.017<0.05). Conclusion: The morphological measurement of the L5-S1 interlaminar window based on 3D reconstruction provided accurate and reliable reference data for epidural puncture approach and posterior approach of lumbar surgery. Moreover, it could also assist the placement of endoscopic working channel in percutaneous endoscopic interlaminar discectomy (PEID) and might be useful for further studies of anatomical and surgical consideration of unilateral biportal endoscopic spinal surgery (UBE) procedures. Key words: Interlaminar window; percutaneous endoscopic interlaminar discectomy (PEID); unilateral biportal endoscopy spinal surgery (UBE); 3D reconstruction.

The Reconstruction for Han Dynasty Stone Images Based on Three-Dimensional Vision

2014 ◽  
Vol 556-562 ◽  
pp. 5009-5012
Author(s):  
Guang Dong Pan
Keyword(s):  
Mathematical Model ◽  
3D Reconstruction ◽  
Basic Principle ◽  
Projective Transformation ◽  
Three Dimensional ◽  
Reconstruction Algorithm ◽  
Han Dynasty ◽  
Dimensional Reconstruction ◽  
New Research ◽  
Three Dimensional Vision

Mainly studying the three-dimensional reconstruction for multiple Han Dynasty stone images, this paper proposes a 3D reconstruction algorithm based on two images. The author analyzes the basic principle of SIFT matching points detection according to Epipolar geometry constraints and projective transformation of images in 2D plane, and establishes mathematical model for the 3D reconstruction on foundation of sequence images. The feasibility of 3D reconstruction based on the sequence images is approved by simulation for three gray-scale Han Dynasty stone digital images which provides a new research way for identifying the feature of a target by the camera.

scholarly journals Comparison of three dimensional reconstruction and conventional computer tomography angiography in patients undergoing zero-ischemia laparoscopic partial nephrectomy

2020 ◽  
Author(s):  
Xiaorong Wu ◽  
Chen Jiang ◽  
Guangyu Wu ◽  
Chao Shen ◽  
Qibo Fu ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Partial Nephrectomy ◽  
Computer Tomography ◽  
Three Dimensional ◽  
Renal Tumors ◽  
Feeding Artery ◽  
Zero Ischemia ◽  
Computer Tomography Angiography ◽  
Conventional Computer

Abstract Background: Advances in three dimensional (3D) reconstruction and printing technology have fueled a rapidly growing interest in its applications in the field of urology. To our knowledge, the experience on the use of 3D reconstruction to facilitate zero-ischemia partial nephrectomy (PN) remains sparse and the role of 3D reconstruction is still needed to be defined. This study aimed to assess the role of 3D reconstruction and conventional computer tomography angiography (CTA) in zero-ischemia laparoscopic partial nephrectomy (LPN).Methods: A total of 60 consecutive patients undergoing zero-ischemia LPN between October 2017 and March 2018 who underwent CTA (CTA group including 30 patients) and 3D reconstruction (3D group including the remaining 30 patients) preoperatively were included. 3D reconstruction and CTA images were prepared which were used to demonstrate the number and spatial interrelationships of the location of renal tumors and tumor feeding arteries. These radiological findings were directly correlated with intraoperative surgical findings at laparoscopy. Baseline, perioperative variables and the rate of accurate tumor feeding artery orientation were compared between groups.Results: All the procedures were performed successfully without conversion to main renal artery clamping. Preoperative 3D reconstruction identified that 15 patients had only one tumor feeding artery, 12 had two, and another 3 had three, while the conventional CTA revealed that 22 patients had one tumor feeding artery, 8 had two (P>0.05). The mean operation time was shorter and estimated blood loss was less in the 3D group (P<0.05). 3D reconstruction group resulted in more accurate dissection of tumor artery (91.7%) as compared to conventional CTA (84.2%). There were no statistical differences in the baseline characteristics and renal function outcomes between two groups. Conclusions: 3D reconstruction can provide comprehensive information for the preoperative evaluation and intraoperative orientation that may facilitate tumor resection during zero-ischemia LPN for renal tumors.

scholarly journals Three-Dimensional Reconstruction Algorithm for CT Pulmonary Angiography in Patients with Pulmonary Embolism Combined with Syncope

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Zhongxing Zhang ◽  
Yan Zhang ◽  
Xiaohui Wang ◽  
Xiaoli Han ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
3D Reconstruction ◽  
Clinical Characteristics ◽  
Three Dimensional ◽  
Reconstruction Algorithm ◽  
Pulmonary Angiography ◽  
Mesh Simplification ◽  
Ct Pulmonary Angiography ◽  
Dimensional Reconstruction ◽  
The Difference

This paper aimed to study the clinical characteristics of patients with pulmonary embolism (PE) with syncope (PE + S) based on the three-dimensional (3D) reconstruction algorithm in computed tomography (CT) pulmonary angiography (CTPA). In this study, 857 patients with acute PE (APE) who were treated in hospital were selected as the research objects and divided into syncope group (group S) and nonsyncope group (group NS). The 3D reconstruction marching cubes (3DR-MC) algorithm was compared with the traditional MC (T-MC) algorithm and the mesh simplification MC (MMS-MC) algorithm, and the results proved that the running time of the 3DR-MC algorithm on the platform was shorter than that of the other two algorithms. The incidence of syncope in group S in women was higher than that in group NS (51.7% vs. 38.2%). The incidence of syncope classified as high risk in group S was higher than that in group NS, and the mortality rate of pulmonary embolism patients with syncope was higher, and the difference was statistically significant (χ2 = 113.332, P < 0.05 ). The incidence of syncope in group S was higher than that in group NS (χ2 = 4.074, P < 0.05 ). In short, hypertension was an independent risk factor for syncope. PE + S patients could be diagnosed and treated as early as possible based on the clinical characteristics, so as to reduce the adverse consequences of misdiagnosis.

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