An Experimental Study for Calculation of Cross Sectional Area and Volume in Various Objects Using Auto-CAD(computer aided design)

Objectives: This study aimed to compare the optical properties of Zolid FX, Katana UTML, and lithium disilicate laminate veneers. Materials and Methods: In this in-vitro experimental study, the maxillary left lateral incisor of a phantom received a laminate veneer preparation. An impression was made, and a die was fabricated using dental stone. The die was scanned using a computer-aided design/computer-aided manufacturing scanner. Ten dies were fabricated from each of the A1, A2, and A3 shades of composite resin. Laminate veneers were fabricated using A1 shade of Katana UTML, Zolid FX, and IPS e.max CAD ceramics (n=10) and placed on composite abutments using bleach and white colors of trial insertion paste (TIP). The optical properties were measured at the incisal, middle, and cervical thirds using a spectrophotometer. Data were analyzed using three-way analysis of variance and Tukey’s test. Results: The effect of laminate material on the L*, a*, and b* parameters was significant in all areas (P<0.001), except for the L* parameter in the middle and cervical thirds. All color parameters were affected by TIP color in all three regions in most samples (P<0.05). The effect of composite abutment shade was also significant in most cases (P<0.05). The effect of laminate material, abutment shade, and TIP color on the b* parameter was significant (P<0.001). The L* parameter was almost the same in the two zirconia and lithium disilicate ceramic groups. Conclusion: The composite abutment shade, TIP color, and laminate material should be carefully selected to achieve optimal aesthetics in laminate veneers.

Download Full-text

Corticosteroid-induced magnetic resonance imaging changes in patients with recurrent malignant glioma.

Journal of Clinical Oncology ◽

10.1200/jco.1994.12.9.1886 ◽

1994 ◽

Vol 12 (9) ◽

pp. 1886-1889 ◽

Cited By ~ 71

Author(s):

C J Watling ◽

D H Lee ◽

D R Macdonald ◽

J G Cairncross

Keyword(s):

Magnetic Resonance ◽

Malignant Glioma ◽

Symptom Control ◽

Corticosteroid Treatment ◽

Cross Sectional Area ◽

Sectional Area ◽

Recurrent Malignant Glioma ◽

Cross Sectional ◽

Investigational Treatment ◽

Area And Volume

PURPOSE We studied corticosteroid-induced magnetic resonance (MR) scan changes in patients with recurrent malignant glioma to determine if corticosteroid therapy started concurrently with investigational treatment might yield false-positive responses. PATIENTS AND METHODS Ten symptomatic patients not on corticosteroids when malignant glioma recurred had a baseline MR scan performed before corticosteroid treatment, followed by serial scans at weekly intervals for 1 month while on dexamethasone (16 mg/d). The maximum cross-sectional areas and volumes of the gadolinium-enhancing regions (tumor) and T2-weighted abnormalities (tumor plus edema) were compared quantitatively and qualitatively for each series of scans. RESULTS Nine of 10 patients (90%) had a measurable reduction in the size of the gadolinium-enhancing region or T2-weighted abnormality with corticosteroid treatment. The maximum cross-sectional area and volume of the gadolinium-enhancing region decreased by at least 25% in three of 10 patients (30%). The maximum cross-sectional area and volume of the T2-weighted abnormality decreased by at least 25% in five of 10 patients (50%). Maximum measurable radiologic improvement was evident within 2 weeks in most patients. MR scans were judged improved by the reporting neuroradiologist in seven of 10 (70%). These subjective visual improvements were also evident within 2 weeks, but generally described as slight or modest. CONCLUSION Corticosteroid-induced MR scan reductions in tumor size may confound the assessment of response of recurrent malignant gliomas to investigational agents. For patients who start corticosteroids for symptom control, investigational treatment should be delayed until a new baseline MR image is established 2 weeks later. Response is then judged by comparing subsequent MR scans with the new corticosteroid-influenced baseline image.

Download Full-text

Experimental Study of Stiffness and Nonuniformity in the Vibroscopic Determination of Fiber Cross-Sectional Area

Textile Research Journal ◽

10.1177/004051755302301110 ◽

1953 ◽

Vol 23 (11) ◽

pp. 821-830 ◽

Cited By ~ 11

Author(s):

E.T.L. Voong ◽

D.J. Montgomery

Keyword(s):

Experimental Study ◽

Cross Sectional Area ◽

Sectional Area ◽

Cross Sectional

Download Full-text

Cross-sectional design: a tool for computer graphics and computer-aided design courses

FIE'99 Frontiers in Education. 29th Annual Frontiers in Education Conference. Designing the Future of Science and Engineering Education. Conference Proceedings (IEEE Cat. No.99CH37011 ◽

10.1109/fie.1999.841576 ◽

2003 ◽

Cited By ~ 4

Author(s):

Y. Zhao ◽

Y. Zhou ◽

J.L. Lowther ◽

Ching-Kuang Shene

Keyword(s):

Computer Graphics ◽

Computer Aided Design ◽

Cross Sectional ◽

Computer Aided ◽

Cross Sectional Design ◽

Aided Design

Download Full-text

PENERAPAN TEKNIK PENGGAMBARAN GARIS KONTUR MENGGUNAKAN AUTO CAD 3D

Jurnal Teknik Sipil Terapan (JTST) ◽

10.47600/jtst.v3i2.281 ◽

2021 ◽

Vol 3 (2) ◽

pp. 90

Author(s):

Novatus Senduk

Keyword(s):

Computer Aided Design ◽

Computer Aided ◽

Aided Design ◽

Auto Cad

Dalam aplikasi gambar teknik konstruksi jalan jembatan terdapat bagian penggambaran garis kontur yang memberikan data ketinggian dari permukaan air laut rata-rata dan digambar pada interval yang sama untuk membuat suatu peta topografi. Saat ini teknologi sudah semakin maju, dalam setiap bidang kerja telah menggunakan komputer yang dijadikan alat yang membantu mempermudah pekerjaan. Salah satu alat yang membantu mempermudah pekerjaan dibidang komputer adalah C.A.D ( Computer Aided Design ) atau Disain dengan bantuan Komputer, yang bertujuan untuk memudahkan para perancang dan juru gambar dalam menuangkan idenya secara visual dalam tampilan obyek gambar. Dengan adanya penelitian ini akan diperoleh pemahaman dan langkah-langkah menggambar garis kontur dengan menggunakan software AutoCAD, kemudian divisualisasikan kedalam bentuk yang nyata secara 3 dimensi, menghitung volume hasil penggambaran dan mengetahui kendala yang ada dalam menerapkan penggambaran garis kontur. Penelitian ini dilaksanakan dalam waktu delapan bulan. Metode penelitian yang akan dipakai adalah metode penelitian praktek ditinjau dari tempatnya, suatu pendekatan praktek, yaitu suatu penelitian dilakukan di laboratorium yaitu laboratorium komputer/laboratorium Gambar dengan tidak menutup kemungkinan termasuk menggunakan tempat lain yang menyediakan fasilitas komputer. Hasil penelitian menggambar garis kontur yang cepat dan praktis adalah menggunakan Auto CAD 3D yang memperlihatkan visualisasi gambar 3 dimensi secara nyata.

Download Full-text

Panoramic ultrasound vs. MRI for the assessment of hamstrings cross-sectional area and volume in a large athletic cohort

Scientific Reports ◽

10.1038/s41598-020-71123-6 ◽

2020 ◽

Vol 10 (1) ◽

Cited By ~ 1

Author(s):

Martino V. Franchi ◽

Daniel P. Fitze ◽

Jonas Hanimann ◽

Fabio Sarto ◽

Jörg Spörri

Keyword(s):

Cross Sectional Area ◽

Sectional Area ◽

Cross Sectional ◽

Area And Volume

Download Full-text

Tracheal Incision as a Contributing Factor to Tracheal Stenosis: An Experimental Study

Annals of Otology Rhinology & Laryngology ◽

10.1177/000348947508400609 ◽

1975 ◽

Vol 84 (6) ◽

pp. 781-786 ◽

Cited By ~ 14

Author(s):

Gary C. Lulenski ◽

John G. Batsakis

Keyword(s):

Experimental Study ◽

Histological Examination ◽

Tracheal Stenosis ◽

Animal Experimentation ◽

Cross Sectional Area ◽

Sectional Area ◽

Tracheal Lumen ◽

Cross Sectional ◽

Tracheal Stoma ◽

Made In

Tracheostomies were performed on 25 mongrel dogs, employing either a vertical or inverted U flap incision in the trachea. Following cannulation for 14 days, the animals were maintained for three months and endolarygeal photographs were taken. At the time of autopsy, comparisons of the gross specimens were carried out, as well as histological sectioning through the tracheal stomal area. Both endolaryngeal examination and study of the gross specimens at autopsy revealed less distortion of the tracheal lumen following the flap versus vertical tracheostomy, especially in those animals having the flap of cartilage resewn to the trachea at the time of decannulation. Measurements of the cross sectional area at the tracheal stoma were also made. In animals having a flap tracheostomy, the stomal lumen was preserved, regardless of resuturing the flap. However, animals having a vertical tracheostomy lost an average of 18% of the tracheal area when compared with those having a flap incision. Histological examination revealed cartilaginous growth across the tracheostomy incision only in animals having the flap tracheostomy. Support for the flap tracheostomy is provided from animal experimentation.

Download Full-text