A Novel Supraclavicular Approach to the Right Subclavian Vein Based on Three-Dimensional Computed Tomography

Few studies have been reported on the scientific measurements of the thickness and dimensions of the posterior palatal seal (PPS) area. The purpose of this study is to measure and analyze the thickness of palatal mucosa by using a three-dimensional (3D) model reconstructed with computed tomography (CT) images and to present objective values by identifying the PPS area. The CT images were reconstructed as a 3D model by separating the maxillary palate mucosa and teeth. Each reconstructed model was analyzed and the thickness was measured at 93 crossing points of each divided plane. The dimension of the PPS area was measured and the right and left dimensions of the PPS area were compared. The thickness of the palatal mucosa was thicker toward the posterior area. The thickness increased in the lateral direction and decreased again. In the PPS area, the mean dimension between the rearmost of anterior border and the most posterior line was 2.19 mm and the mean dimension between the forefront of anterior border and the most posterior line was 5.19 mm in the right side and 5.16 mm in the left side. The mean dimension from the center of the palate to the right most forward point was 6.85 mm, and the left was 7.36 mm. The new measurement method of palatal mucosal thickness is noninvasive, accurate, and easy to store and study, so it can be used effectively in planning and manufacturing the maxillary complete denture in the digital workflows.

Download Full-text

Variability of the level of portal vein formation registered by computed tomography

Science and Innovations in Medicine ◽

10.35693/2500-1388-2021-6-1-4-8 ◽

2021 ◽

Vol 6 (1) ◽

pp. 4-8

Author(s):

Aleksandr V. Kolsanov ◽

Maksim N. Myakotnykh ◽

Anatolii V. Tolstov ◽

Aleksei A. Mironov

Keyword(s):

Computed Tomography ◽

Portal Vein ◽

Three Dimensional ◽

Spinal Column ◽

Lumbar Vertebra ◽

Thoracic Vertebra ◽

Vein Formation ◽

Dimensional Models ◽

Three Dimensional Models ◽

The Right

Objectives to study the variability of the level of portal vein formation in relation to the spinal column according to computed tomography data. Material and methods. The study evaluated the results of 100 multispiral (multislice) computed tomography (MSCT) scans of the abdominal organs done in the period of 2018-2019 and collected in the archive of the Clinics of the Samara State Medical University. For mathematical modeling and the creation of three-dimensional models of the vascular bed, we used the plug-ins in the software "Luch" and "Avtoplan" that made it possible to obtain the three-dimensional models based on MSCT data. The level of portal vein formation relative to the spinal column was studied. Results. The level of portal portal vein formation relative to the spinal column varied from the lower edge of the twelfth thoracic vertebra (ThXII) to the upper edge of the second lumbar vertebra (LII). Most often, the portal vein was formed at the level of the middle of the first thoracic vertebra body (LI). This level of portal vein formation was detected in 23% of cases. In 64% of cases, the portal vein was formed at the level of the right edge of the vertebra.

Download Full-text

VATS right upper posterior segmentectomy with anomalous bronchiand pulmonary vessels: a case report and literature review

10.21203/rs.3.rs-104612/v1 ◽

2020 ◽

Author(s):

Jianbin Zhang ◽

Yilv Zhu ◽

Hongwei Li ◽

Caihua Yu ◽

Weiwei Min

Keyword(s):

Computed Tomography ◽

Case Report ◽

Rare Case ◽

Anatomic Variation ◽

Three Dimensional ◽

Posterior Segment ◽

Detailed Model ◽

Case Presentation ◽

Pulmonary Vessels ◽

The Right

Abstract BackgroundAnatomic variation may increase the difficulty and risk for anatomic segmentectomy. The preoperative three-dimensional computed tomography bronchography and angiography(3D-CTBA) can provide a detailed model of the segmental structure, and contribute to precise and safe segmentectomy.Case presentationWe report a case with anomalous bronchi and pulmonary vessels in the right upper posterior segment (RS2), under the guidance of 3D-CTBA, anatomic RS2segmentoctomywas performed accurately and safely, the postoperative condition was uneventful.ConclusionsThis rare case highlights the importance of 3D-CTBA to guild accurate segmentectomy with anatomic variation.

Download Full-text

VATS right posterior segmentectomy with anomalous bronchi and pulmonary vessels: a case report and literature review

Journal of Cardiothoracic Surgery ◽

10.1186/s13019-021-01420-2 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Jianbin Zhang ◽

Yilv Zhu ◽

Hongwei Li ◽

Caihua Yu ◽

Weiwei Min

Keyword(s):

Computed Tomography ◽

Case Report ◽

Rare Case ◽

Anatomic Variation ◽

Three Dimensional ◽

Posterior Segment ◽

Detailed Model ◽

Case Presentation ◽

Pulmonary Vessels ◽

The Right

Abstract Background Anatomic variation may increase the difficulty and risk of anatomic segmentectomy. The preoperative three-dimensional computed tomography bronchography and angiography (3D-CTBA) can provide a detailed model of the segmental structure, and contribute to precise and safe segmentectomy. Case presentation This is a case of anomalous bronchi and pulmonary vessels in the right upper posterior segment (RS2). Under the guidance of 3D-CTBA, anatomic RS2 segmentectomy was performed accurately and safely. The postoperative condition was uneventful. Conclusions This rare case highlights the importance of 3D-CTBA to guild accurate segmentectomy with anatomic variation.

Download Full-text

Preserving inferior right hepatic vein enabled bisegmentectomy 7 and 8 without venous congestion: a case report

Surgical Case Reports ◽

10.1186/s40792-021-01184-w ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Masayoshi Terayama ◽

Kyoji Ito ◽

Nobuyuki Takemura ◽

Fuyuki Inagaki ◽

Fuminori Mihara ◽

...

Keyword(s):

Computed Tomography ◽

Hepatic Vein ◽

Three Dimensional ◽

Venous Drainage ◽

Injection Technique ◽

Remnant Liver ◽

Right Hepatectomy ◽

Dimensional Simulation ◽

The Right ◽

Right Hepatic Vein

Abstract Background In hepatectomy, the preservation of portal perfusion and venous drainage in the remnant liver is important for securing postoperative hepatic function. Right hepatectomy is generally indicated when a hepatic tumor involves the right hepatic vein (RHV). However, if a sizable inferior RHV (IRHV) exists, hepatectomy with preservation of the IRHV territory may be another option. In this case, we verified the clinical feasibility of anatomical bisegmentectomy 7 and 8 with RHV ligation, averting the right hepatic parenchyma from venous congestion, utilizing the presence of the IRHV. Case presentation A 70-year-old man was presented with a large hepatic tumor infiltrating the RHV on computed tomography during a medical checkup. The patient was diagnosed with hepatocellular carcinoma (HCC), T2N0M0, stage III. Right hepatectomy was first considered, but multi-detector computed tomography (MDCT) also revealed a large IRHV draining almost all of segments 5 and 6, suggesting that IRHV-preserving liver resection may be another option. The calculated future remnant liver volumes were 382 mL (26.1% of the total volume) after right hepatectomy and 755 mL (51.7% of the total volume) after anatomical bisegmentectomy 7 and 8; therefore, we scheduled IRHV-preserving anatomical bisegmentectomy 7 and 8 considering the prevention of postoperative liver failure and increased chance of performing repeat resections in cases of recurrence. Preoperative three-dimensional simulation using MDCT clearly revealed the portal perfusion area and venous drainage territories by the RHV and IRHV. There was an issue with invisibility of the anatomical resection line of segments 7 and 8, which was completely dissolved by intraoperative ultrasonography using Sonazoid and the portal dye injection technique with counter staining. The postoperative course in the patient was uneventful, without recurrence of HCC, for 30 months after hepatectomy. Conclusions IRHV-preserving anatomical bisegmentectomy 7 and 8 is a safe and feasible procedure utilizing the three-dimensional simulation of the portal perfusion area and venous drainage territories and the portal dye injection technique.

Download Full-text

Total resection of the right hepatic vein drainage area with the aid of three-dimensional computed tomography

Surgery Today ◽

10.1007/s00595-011-0021-8 ◽

2011 ◽

Vol 42 (1) ◽

pp. 46-51 ◽

Cited By ~ 7

Author(s):

Akinobu Taketomi ◽

Kazuki Takeishi ◽

Yohei Mano ◽

Takeo Toshima ◽

Takashi Motomura ◽

...

Keyword(s):

Computed Tomography ◽

Hepatic Vein ◽

Three Dimensional ◽

Drainage Area ◽

Total Resection ◽

The Right ◽

Right Hepatic Vein

Download Full-text

Three-Dimensional Computed Tomography Follow-Up on Spontaneous Bone Healing after Excision of Periorbital Dermoid Cyst: A Case Report

Journal of Wound Management and Research ◽

10.22467/jwmr.2021.01606 ◽

2021 ◽

Vol 17 (3) ◽

pp. 213-217

Author(s):

Hannara Park ◽

Jaemin Seong ◽

Hyochun Park ◽

Hyeonjung Yeo

Keyword(s):

Computed Tomography ◽

Dermoid Cyst ◽

Three Dimensional ◽

Surgical Excision ◽

Complete Recovery ◽

Bony Defect ◽

Palpable Mass ◽

Nodular Lesions ◽

The Right

Dermoid cysts are among the most common periorbital and orbital tumors presenting in childhood. Several studies have shown that dermoid cysts may deform adjacent bones; however, few studies have followed the course of bone regeneration after the excision of a cyst. We report a case of a 29-month-old female infant who presented with a palpable mass over her right lateral eyebrow. Ultrasonography findings suggested a dermoid cyst, and computed tomography revealed a 2.1-cm round bony defect in the right zygoma. After surgical excision of the dermoid cyst, we successfully applied fibrin sealant to eliminate the dead space. Pathological findings showed nodular lesions with flat cystic walls containing lamellated keratin and sebaceous glands, supporting the diagnosis of dermoid cyst. At 6 months postoperatively, a follow-up computed tomography scan confirmed complete recovery of the bone defect in the right zygoma.

Download Full-text

Sex determination by osteometric assessment of the mastoid process using Cone Beam Computed Tomography

Brazilian Dental Science ◽

10.14295/bds.2021.v24i1.2075 ◽

2020 ◽

Vol 24 (1) ◽

Author(s):

Fatemeh Salemi ◽

Maryam Farhadian ◽

Abbas Shokri ◽

Yaser Safi ◽

Shahin Rahimpanah

Keyword(s):

Computed Tomography ◽

Sex Determination ◽

Cone Beam Computed Tomography ◽

Function Analysis ◽

Three Dimensional ◽

Good Method ◽

Cone Beam ◽

Mastoid Process ◽

Discriminant Model ◽

The Right

Objective: Sex determination is one of the most important parameters to identify in forensic science. Because the mastoid process is the most resistant to damage due to its position in the skull base, it can be used for sex determination. The purpose of this study was to measure the dimensions and convexity and internal angles of the mastoid process to present a model of sex determination in Iranian population. Material and methods: This study was performed on three-dimensional images of 190 Cone Beam Computed Tomography (CBCT) of 105 women and 85 men. On each CBCT the distance between the porion and the mastoid (PM), mastoid length (ML), the distance between the mastoidale and the mastoid incision (M-I), the mastoid height (MH), the mastoid width (MW), intermastoidale distance (IMD) the lateral surfaces of the left and right mastoids (IMLSD) and the Mastoid medial convergence angle (MMCA) was measured on both the right and the left. The data were analyzed by descriptive statistics, t-test, and discriminant function analysis. Results: Significant differences were found for all variables except MMCA and MF in both sex. All measured variables except MW were greater for men than women. The discriminant model achieved a total accuracy of 93.7%. Among the measured factors IMD and IMSLD had the most influence on sex determination. Conclusion: Measuring the dimensions of the mastoid process is a very good method for sex determination with high accuracy of 90%. KEYWORDS Discriminant model; Cone beam computed tomography (CBCT); Sex determination; Mastoid process.

Download Full-text