Digital measurement of bone tumor volume by CT three-dimensional reconstruction technology

Objective To discuss the measurement of bone tumor volume on the basis of three dimensional images segmentation technology. Methods Twenty patients with lacunar bone tumor from Tianjin Hospital and Tongji Hospital were included in the

Digitizing the Undigitized: Converting Traditional Archaeological Records into Computerized, Three-Dimensional Site Reconstruction

Archaeological excavation involves disintegration, removal, and reassembly of the archaeological record;as such it is considered by many to be an unrepeatable, destructive activity. This perception has contributed to an advancement in archaeological practice, namely, the development of computerized recording systems that digitally record archaeological excavations spatially and volumetrically during fieldwork. This paper is concerned with those archaeological sites where digital field recording has not been done. These sites, recorded by traditional methods, should not be excluded from attempts to restructure the spatial, volumetric, and stratigraphic archaeological data. A thorough methodology for the conversion of traditional records into digitized data is presented, including the detailed procedures required for three-dimensional plotting of recorded data—both the excavated material and the drawn site maps and cross-sections. Finally, the use of these methods is demonstrated on a complex Early to Middle Pleistocene site, illustrating the benefits of digitization and three-dimensional reconstruction in resolving stratigraphic and spatial questions.

A rapid micro-magnetic resonance imaging scanning for three-dimensional reconstruction of peripheral nerve fascicles

The most common methods for three-dimensional reconstruction of peripheral nerve fascicles include histological and radiology techniques. Histological techniques have many drawbacks including an enormous manual workload and poor image registration. Micro-magnetic resonance imaging（Micro-MRI）, an emerging radiology technique, has been used to report results in the brain, liver and tumor tissues. However, micro-MRI usage for obtaining intraneural structures has not been reported. The aim of this study was to present a new imaging method for three-dimensional reconstruction of peripheral nerve fascicles by ~1T micro-MRI. Freshly harvested sciatic nerve samples from an amputated limb were divided into four groups. Two different scanning conditions（Mannerist Solution/GD-DTPA contrast agent, distilled water） were selected, and both T1 and T2 phases programmed for each scanning condition. Three clinical surgeons evaluated the quality of the images via a standardized scale. Moreover, to analyze deformation of the two-dimensional image, the nerve diameter and total area of the micro-MRI images were compared after hematoxylin-eosin staining. The results show that rapid micro-MRI imaging method can be used for three-dimensional reconstruction of the fascicle structure. Nerve sample immersed in contrast agent（Mannerist Solution/GD-DTPA） and scanned in the T1 phase was the best. Moreover, the nerve sample was scanned freshly and can be recycled for other procedures. MRI images show better stability and smaller deformation compared with histological images. In conclusion, micro-MRI provides a feasible and rapid method for three-dimensional reconstruction of peripheral nerve fascicles, which can clearly show the internal structure of the peripheral nerve.

Comparison of Different Reconstruction Algorithms for Decreasing the Exposure Dose during Digital Breast Tomosynthesis: A Phantom Study

We compared reconstruction algorithms [filtered back projection (FBP), maximum likelihood expectation maximization (MLEM), and the simultaneous iterative reconstruction technique (SIRT)] in terms of the radiation dose and image quality, for exploring the possibility of decreasing the radiation dose during digital breast tomosynthesis (DBT). The three algorithms were implemented using a DBT system and experimentally evaluated using measurements, such as signal difference-to-noise ratio (SDNR) and intensity profile, on a BR3D phantom (infocus plane image). The possible radiation dose reduction, contrast improvement, and artifact reduction in DBT were evaluated using different exposure levels and the three reconstruction techniques. We performed statistical analysis (one-way analysis of variance) of the SDNR data. The effectiveness of each technique for enhancing the visibility of the BR3D phantom was quantified with regard to SDNR (FBP versus MLEM, P < 0.05;FBP vs. SIRT, P < 0.05;MLEM vs. SIRT, P = 0.945);the artifact reduction was quantified with regard to the intensity profile. MLEM and SIRT produced reconstructed images with SDNR values indicative of low-contrast visibility. The SDNR value for the half-radiation dose MLEM and SIRT images was close to that of the FBP reference radiation dose image. Artifacts were decreased in the MLEM and SIRT images (in the infocus plane) according to the intensity profiles that we obtained. With MLEM and SIRT, the radiation dose may be decreased to half comparison with FBP.

Application of digital technology in nasal reconstruction

Nasal defects are facial defects caused by trauma,tumors,or congenital diseases that seriously damage a patient’s physical and mental health.Nasal defects,from skin defects to total nasal defects,require surgical repair and reconstruction to restore the appearance and function of the nose,which have always been challenges for rhinoplasty.The development of digital technology has increased the possibility of nasal reconstruction.Digital technology is involved in the preoperative,intraoperative,and postoperative stages of nasal construction and is of great significance in improving the effect of this surgery.This article reviews the application of major digital technologies,including three-dimensional(3D)imaging technology,computer-assisted surgical navigation,and 3D printing,in nasal reconstruction and discusses the shortcomings of the current application of digital technology.

Three-dimensional digital technology-assisted precise tumor resection and reconstruction of the femoral trochanter and postoperative functional recovery:a retrospective study

Background The trochanter of the femur is a common site for bone tumors.However,locating the specificboundary of bone tumor infiltration and determining the surgical method can be challenging.The objective of thisstudy was to review the diagnosis,treatment,and surgical outcomes of patients with tumors or tumor-like changesin the femoral trochanter after computer-assisted precise tumor resection and hip-preserving reconstruction ofthe trochanter.Methods From January 2005 to September 2020,11 patients with trochanteric tumors(aged:18–53 years;sixmales and five females)were treated in Guangzhou First People’s Hospital.The cases included aneurysmal bonecyst(n=1),giant cell tumor of bone(n=2),fibrous histiocytoma of bone(n=1),endochondroma(n=1),andfibrous dysplasia of bone(n=6).For patients with trochanteric tumors,computed tomography and magnetic resonance imaging scanning were performed before operation to obtain two-dimensional image data of the lesion.Athree-dimensional digital model of bilateral lower limbs was reconstructed by computer technology,the boundary of tumor growth was determined by computer simulation,the process of tumor resection and reconstructionwas simulated,and the personalized guide template was designed.During the operation,the personalized guideplate guided the precise resection of the tumor,and the allogeneic bone was trimmed to match the shape of thebone defect.Results All 11 patients underwent accurate resection of the tumor or tumor-like lesion and reconstruction ofthe hip.In eight cases,the lesion was confined to the trochanter,which was fixed with large segment allogeneicbone,autologous iliac bone,and proximal femoral anatomic plate.In three cases,allogeneic bone,autologousiliac bone,and femoral reconstruction nail were used to fix the tumor under the trochanter.Postoperative Xray examination showed that the repair and reconstruction of the bone defect was effective,and callus bridgingbetween the allogenic bone and autogenous bone was observed 6 months after operation.All patients recoveredtheir walking function 3–6 months after operation.The duration of the follow-up period ranged from 6 monthsto 6 years.A patient experienced recurrence of endochondroma;pathological examination revealed chondrocyticsarcoma.The remaining 10 patients were treated with segmental resection and reconstruction.The operationtime ranged 2.5–4.5 h(average:3.2 h).Intraoperative blood loss ranged from 300 to 500 ml(average:368 ml).The local recurrence rate was 9.1%,and the overall survival rate was 100%.The average Musculoskeletal TumorSociety score was 27(excellent and good for eight and three patients,respectively).Conclusions Three-dimensional computer skeleton modeling and simulation-assisted resection and reconstruction of femoral trochanteric tumor is a new surgical technique,which might markedly improve the surgical effect,shorten the surgical time,increase the overall survival rate of patients with tumors,reduce the local recurrencerate,assist in the digitization and programming of femoral trochanteric tumor surgery,and improve surgicalaccuracy.

Three-Dimensional Computerized Tomography-Assisted Identification of Necrotic Volume, Distribution, Shape and Prognosis of Collapse in ONFH

Objective: We constructed 3D-model of ONFH in computer according to three-dimensional computerized tomography (3D-CT) data. We determined the location and volume of necrosis to investigate its clinical efficacy. Method: Totally 92 hips (59 cases) with ONFH (44 males, 15 females) were included, with mean age of 37.5 years (range from 26 to 58). Totally 20 cases (35 hips) were induced by corticosteroid (CTSs), 31 (49 hips) induced by alcohol, 4 (4 hips) induced by trauma and 4 (4 hips) idiopathic. All the hips were categorized into stage ARCO II. Finally diagnosed by MRI, all hips were scanned by CT to acquire data in DICOM format. The images were imported into software to extract 3D-shape of femoral heads, necrotic foci, their volumes and distribution in each quadrant. Deviation of volumes between digital image and biopsy specimen was analyzed by SAS9.1 package. Correlativity between collapse and volume of necrosis under specific pathogeneses was also analyzed. Among the cases necessitating total hip arthroplasty (THA) due to advancing to ARCO III, we randomly selected 8 of them to perform 3D-CT scanning thrice prior to surgical operation. Total femoral heads harvested were torn asunder. Cubic capacity of femoral heads and necrotic foci were hereby measured and compared with those acquired from digital models. Result: Through the digital model, necrotic foci were found mainly locating within the super lateral portion of femoral head, coinciding with those observed in biopsy specimen. Average volumetric ratio of digitally acquired necrosis focus/femoral head in 58 collapsed hips was 36.8%. The ratio of the 34 hips without collapse was 17.3%. In collapsed femoral heads, the distribution of necrosis focus was 23.4% in quadrant 1 (q1), 23.6% in q2, 12.1% in q3, 14.4% in q4, 9.0% in q5, 11.8% in q6, 1.6% in q7 and 3.9% in q8. In femoral heads without collapse, the distribution was 34.2% in q1, 29.6% in q2, 11.8% in q3, 11.3% in q4, 6.0% in q5, 6.0% in q6, 0.5% in q7 and 0.4% in q8. As for the average cubic capacities of femoral heads and necrotic foci, those acquired from the digital model and biopsy specimen had no significant difference in matched-pairs test (t = -1.49, P = 0.179 for femoral heads and t = -1.52, P = 0.172 for necrotic foci). There was significant difference (F = 2.720, P = 0.035 P was respectively 0.0001 and 0.0005). Decision tree model showed that 94.6% (53/56) hips would progress into collapse if the volumetric ratio of necrotic tissue was over 23.48%. Otherwise, if distribution in q2 was over 45.13%, 83.3% (5/6) hips would progress into collapse. No collapse (0/30) would occur if the distribution of necrotic tissue in q2 was under 45.13%. Conclusion: Digital 3D-model reconstructed from CT scanning can precisely incarnate spatial orientation of necrotic foci in femoral head. Multinomial logistic regression and decision-making tree shows that volumetric ratio of necrotic tissues plays an important role in anticipating collapse of femoral head.

Fluoro-ruby retrograde tracing and three-dimensional visualization of the corticospinal tract in the guinea pig

Fluoro-ruby was injected into the posterior funiculus of the spinal cord in the cervical （C5-T2） and lumbar （L3-6） segments of adult guinea pigs. The spinal cord was cut into serial frozen sections. The Fluoro-ruby labeling was clearly delineated from the surrounding structure. The labeling traversed the cervical, thoracic and lumbar segments, and was located on the ventral portion of the posterior funiculus on the injected side, proximal to the intermediate zone of the dorsal gray matter. The fluorescence area narrowed rostro-caudally. The spinal cord, spinal cord gray matter and corticospinal tract were reconstructed using 3D-DOCTOR 4.0 software, resulting in a robust three-dimensional profile. Using functionality provided by the reconstruction software, free multi-angle observation and sectioning could be conducted on the spinal cord and corticospinal tract. Our experimental findings indicate that the Fluoro-ruby retrograde fluorescent tracing technique can accurately display the anatomical location of corticospinal tract in the guinea pig and that three-dimensional reconstruction software can be used to provide a three-dimensional image of the corticospinal tract.

Application of three-dimensional digitalized reconstruction of latissimus dorsi myocutaneous flap

Developments of digital technology and three-dimensional(3D)reconstruction allowed a precise description of anatomic structures.With the introduction of Visible Human Project and Virtual Chinese Human(VCH)techniques,more detailed anatomic images could be obtained.Digitized visible models of these structures can be applied as a useful tool in clinical training.The aim of this study was to reconstruct the normal structures of thoracodorsal artery in 3D images and to establish the digitized visible models of latissimus dorsi myocutaneous(LDM)flap.The cross-sectional images from the four VCH datasets were reviewed to study LDM and thoraco-dorsal artery structures on a section-by-section basis.Next,two adult fresh cadaver specimens were perfused with lead oxide-gelatine mixture and subject to radio-graphic CT scanning on their torsos.The cross-sectional images from the CT images were reviewed to study thor-acodorsal artery structures.Three-dimensional computer-ized reconstructions of LDM flap structures were conducted from these datasets by using Amira 3.1(TGS)software respectively.The 3D reconstructed visible models established from these datasets perfectly displayed the anatomic characteristics of LDM flap.

Three-Dimensional Volumetric Analysis of Venous Malformations for Assessing the Effectiveness of Percutaneous Sclerotherapy

BACKGROUND Percutaneous sclerotherapy can be used to successfully treat venous malformations(VMs)of the head,neck,and limbs.However,the standard curative effect of sclerotherapy has rarely been analyzed,and there is currently no accurate statistical method to measure the volume of VMs after sclerotherapy.Here,we propose a novel threedimensional(3D)reconstruction method to evaluate this effect.OBJECTIVE To test the feasibility of 3D software(MIMICS 19.0)to evaluate the treatment effect of sclerotherapy.METHODS This retrospective study included patients with VMs on the head,neck,and limbs who were treated with ethanol sclerotherapy or foam sclerotherapy every 8 weeks.MIMICS 19.0 was used to calculate the performance of the lesion after treatment and measure the VM volumes before and after the treatment.The effect of the clinical treatment dose on the lesion was evaluated,and the treatment effect of each patient was recorded.The relationship between the number of treatments and the reduced volume of VMs was analyzed.RESULTS Based on the MIMICS-calculated regions of interest(ROI),we found that 1 mL of ethanol reduced the lesion by 473 mm3 and that one dosage of foam(1 mL of polidocanol and 4 mL air content)reduced the lesion by 2138 mm3,demonstrating that the foam sclerosing agent exhibited greater efficacy in this study.CONCLUSIONS The MIMICS 3D volume reconstruction method can effectively and safely evaluate the efficacy of sclerotherapy and provide a preoperative evaluation.This method is simple,accurate,and feasible.

3D-DSA与Dyna-CT在颅内支架置入术中的临床应用研究

目的探讨三维DSA血管成像(3D-DSA)及数字平板造影机的C臂旋转并断层重建技术(DynaCT)在颅内支架置入术患者中的临床应用。方法选择2019年1月-2020年6月厦门大学附属中山医院收治92例颅内动脉狭窄患者,所有患者均行颅内支架置入术治疗,分为对照组(n=38例)和观察组(n=54例)。对照组采用3D-DSA引导,观察组采用DynaCT引导,术后进行12个月门诊随访,比较两组改良Rankin量表(mRS)评分、手术成功率、并发症、支架再狭窄及斑块检出率。结果观察组术后4个月、8个月及12个月mRS评分、支架成形术耗时低于对照组(P<0.05);观察组Dyna-CT的术前规划、观察到支架表面图像与术中所见吻合,手术成功率为83.33%,高于对照组63.16%(P<0.05);两组围术期并发症发生率无统计意义(P>0.05);观察组手术后进行12个月门诊随访,患者支架再狭窄、血管狭窄部位斑块检出率低于对照组(P<0.05)。结论DynaCT用于颅内支架置入术中能改善患者症状,缩短支架成形术耗时,有助于提高手术成功率,未增加并发症发生率,能降低血管狭窄部位斑块检出率,值得推广应用。

数字化三维重建在老年股骨转子间骨折半髋关节置换中的应用及经济学效果

背景:数字化三维重建技术凭借可视化、精准性、无创等优势逐渐应用于骨科疾病,但关于其在老年股骨转子间骨折人工半髋关节置换术中的循证支持较少。目的:探讨数字化三维重建技术在老年股骨转子间骨折人工半髋关节置换中的应用价值及经济学效果。方法:选择2019年1月至2022年12月遵义市第一人民医院收治的老年股骨转子间骨折患者130例,随机分为对照组和观察组(n=65)。两组均行人工半髋关节置换,对照组采取胶片模板测量的方法进行手工术前规划,观察组采取数字化三维重建技术。观察两组患者术前计划与术中实际应用假体符合率、纤维蛋白原、D-二聚体水平、双侧股骨偏心距差值、双下肢长度差值、Harris髋关节功能评分、目测类比评分、髋关节功能优良率、并发症及住院费用。结果与结论:①观察组髋臼侧、股骨侧假体在0级(完全符合)所占比例高于对照组(P<0.05);②术后3 d观察组纤维蛋白原、D-二聚体水平低于对照组(P<0.05);③术后即刻观察组双侧股骨偏心距差值、双下肢长度差值小于对照组(P<0.05);术前、术后6个月、12个月两组Harris、目测类比评分比较差异无显著性意义(P>0.05),术后12个月两组髋关节功能优良率比较差异无显著性意义(P>0.05);④两组并发症发生率比较差异无显著性意义(P>0.05);观察组住院费用高于对照组(P<0.05);⑤提示将数字化三维重建技术应用于老年股骨转子间骨折人工半髋关节置换,不仅能在术前准确判定假体型号,还能精准重建双下肢力线,但其住院费用高。

Surgical treatment of left-sided renal carcinoma with grade II inferior vena cava tumour thrombus: a report and review of the literature

The surgical removal of renal cancer,along with the thrombectomy of the inferior vena cava tumour thrombus,represents a remarkable milestone in urological surgery.This procedure is not only technically demanding but also requires a high level of surgical expertise.Managing renal cancer combined with a vena cava tumour thrombus poses significant challenges,especially when dealing with combined grade Ⅱ-Ⅳ inferior vena cava tumour thrombus.The complexity of these cases is further exacerbated by the delicate anatomical structures involved and the need to preserve critical vessels while effectively removing the tumour.The Upper Urethral Tumour Treatment Centre of Weifang People's Hospital successfully treated a challenging case of left renal tumour combined with grade II inferior vena cava tumour thrombus.The surgical team,led by experienced urological surgeons,meticulously planned and executed the procedure,ensuring minimal trauma to the patient and complete removal of the tumour.This achievement not only demonstrates the hospital's commitment to providing state-of-the-art surgical care but also highlights the importance of continued research and training in urological oncology.The successful outcome of this case is a testament to the expertise and dedication of the medical team and offers hope to patients facing similar complex surgical challenges.

End-to-end deep learning framework for digital holographic reconstruction

Digital holography records the entire wavefront of an object,including amplitude and phase.To reconstruct the object numerically,we can backpropagate the hologram with Fresnel–Kirchhoff integralbased algorithms such as the angular spectrum method and the convolution method.Although effective,these techniques require prior knowledge,such as the object distance,the incident angle between the two beams,and the source wavelength.Undesirable zero-order and twin images have to be removed by an additional filtering operation,which is usually manual and consumes more time in off-axis configuration.In addition,for phase imaging,the phase aberration has to be compensated,and subsequently an unwrapping step is needed to recover the true object thickness.The former either requires additional hardware or strong assumptions,whereas the phase unwrapping algorithms are often sensitive to noise and distortion.Furthermore,for a multisectional object,an all-in-focus image and depth map are desired for many applications,but current approaches tend to be computationally demanding.We propose an end-to-end deep learning framework,called a holographic reconstruction network,to tackle these holographic reconstruction problems.Through this data-driven approach,we show that it is possible to reconstruct a noise-free image that does not require any prior knowledge and can handle phase imaging as well as depth map generation.

数字骨科3D重建技术辅助腰椎椎弓根螺钉置入的精确性临床研究

目的:探讨应用数字骨科3D重建技术辅助腰椎椎弓根钉置入可行性及精确性。方法:选取广州市海珠区中医医院骨伤科及广州医科大学附属第三医院2021年10月至2022年9月因腰椎退行性病变行腰椎椎间融合减压+椎弓根螺钉内固定术的患者40例,随机分成试验组(虚拟三维模型辅助置钉组)和对照组(传统徒手置钉组),每组20例,试验组予数字骨科3D重建技术辅助置入腰椎椎弓根钉,对照组采用解剖标志及术者经验置入腰椎椎弓根钉。比较两组术前、术后第14天、术后第1个月、末次随访的VAS评分和置钉完成平均时间、平均失血量、总透视次数、钉道调整次数、置钉准确度(一次性置钉成功率、置钉准确率及置钉优良率)、并发症等指标。结果:两组术后第14天、术后第1个月、末次随访的VAS评分与术前比较,差异有统计学意义(P<0.05);两组置钉完成平均时间(试验组为5.25±1.33 min,对照组为10.10±3.42 min)、平均失血量(试验组为10.05±1.82mL,对照组为17.20±3.05mL)、总透视次数(试验组为2.35±0.59次,对照组为3.35±0.76次)、钉道调整次数(试验组为1.2±0.52次,对照组为1.90±0.73次)比较差异具有统计学意义(P<0.05);试验组一次性置钉成功率为(95.83%)明显高于对照组(87.23%)(P<0.05)。结论:脊柱手术中置入椎弓根螺钉时应用数字骨科3D重建技术进行虚拟三维模型重建可获得更满意的置钉效果,值得在临床上推广应用。

基于数字全息技术的变形测量

全息技术在测量、防伪中有大量应用。数字全息技术采用数字记录和计算机处理,实现测量的方法上有其特点。本文重点对数字全息技术实现变形测量的方法和具体算法开展了研究。论文首先总结了数字全息技术应用中的基本问题,包括数字全息算法问题和噪声抑制问题等。叙述了基于数字全息技术的变形测量基本思想,及相位恢复算法,同时分析了几种变形测量的实现方法,并提出了“2+2”步变形测量方法。该方法相对于“1+1”步变形测量方法,提高了测量精度,同时比“4+4”步变形测量法提高了动态性。本文建立了实验系统,获得了硬币的数字全息图,实现了常用的“1+1”步变形测量方法、相移算法的变形测量方法以及“2+2"步变形测量方法,给出了“2+2”变形测量的实验结果。实验结果表明在数字全息技术中结合相移技术进行测量,可以提高物波再现精度,进而提高变形等的测量精度。

基于相移技术的显微数字全息重构细胞相位

介绍了用显微镜物镜、压电陶瓷和CCD建立的一套测量细胞相位的显微数字全息光路,基于相移技术,给出了重构相位的理论分析,并用洋葱磷片叶细胞作为测试样品,完成了测量细胞相位的实验.结果表明:该系统可以完成细胞相位重构,系统分辨率不低于1μm.

应用SimPlant软件精确匹配与缺损外形吻合的髂骨肌瓣行下颌骨重建

目的介绍应用SimPlant软件,在术前经精确匹配,选择形态与缺损下颌骨吻合的供区髂嵴部分,以引导手术中髂骨肌瓣的制备和行下颌骨重建的方法。方法术前以SimPlant软件模拟下颌骨节段性切除、选择形态与缺损下颌骨精确匹配的供区髂嵴部分,对髂骨肌瓣的制备塑形进行精确地预测引导;按术前设计进行下颌骨节段性切除和髂骨肌瓣重建手术。结果按术前设计手术的患者术后面部对称,术后全景片及三维CT显示髂骨重建后的下颌骨形态理想,髁突位于关节窝内。结论术前应用SimPlant软件进行供、受区的匹配选择,可以简化髂骨肌瓣重建下颌骨的手术操作,减少手术创伤,提高下颌骨重建的精确性,为功能性下颌骨重建创造良好条件。

基于冠状面数据的肝静脉和肝内门静脉的三维重建

目的:构建基于肝连续薄层冠状断面数据集的肝静脉和肝内门静脉的三维数字化可视模型。方法:应用数控冷冻铣削技术获取1例肝的连续薄层冠状断面数据集;采用体绘制和面绘制的方法,通过人工干预对数据集中肝内管道系统进行人工识别提取和图像数据分割;运用3D医学可视化软件实现三维重建,构建肝静脉和肝内门静脉的三维可视化模型。结果:肝静脉和肝内门静脉的可视化模型可清晰显示门静脉及其分支和肝静脉及其属支的空间构形,真实地再现了肝门静脉和肝静脉之间复杂的空间毗邻关系。模型中的肝静脉和肝门静脉可单独或总体显示,可在三维空间位置上绕任意轴旋转任意角度,并能从不同的角度对某一血管分支进行多角度、多方位的观察。结论:高质量的二维图像、精确的数据分割和合适的三维重建方法保证了三维数字化可视模型的真实性和准确性。

散射光波场卷积重建的三种方法研究

将数字全息检测物体的表面视为散射面,当物体投影尺寸远大于CCD面阵尺寸时用球面波为重建波,对物平面光波场卷积重建过程进行了理论研究.导出了重建物光场放大率与重建参量的关系.介绍了通过补零扩大CCD平面以及对物体局域重建组合的另外两种卷积重建方法.通过实验对三种方法进了行比较.结果表明,球面波为重建波的方法优于另外两种方法.