scholarly journals Is determination of the hip rotation center during computer-assisted surgery influenced by the pinless femoral sensor attachment method? An in vitro preliminary study comparing osseous pin fixation

2016 ◽  
Vol 102 (3) ◽  
pp. 375-378 ◽  
Author(s):  
E. de Thomasson ◽  
S. Gouzy ◽  
F. Cloerec ◽  
L. Geais
Keyword(s):  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Rotation Center ◽  
Pin Fixation ◽  
Preliminary Study ◽  
Hip Rotation

scholarly journals Computer-assisted surgery in posterior instrumentation of the cervical spine: an in-vitro feasibility study

2000 ◽  
Vol 9 (S1) ◽  
pp. S065-S070 ◽  
Author(s):  
M. Richter ◽  
L.-P. Amiot ◽  
S. Neller ◽  
P. Kluger ◽  
W. Puhl
Keyword(s):  
Cervical Spine ◽  
Feasibility Study ◽  
Posterior Instrumentation ◽  
Computer Assisted Surgery ◽  
Computer Assisted

Detection of the hip center in computer-assisted surgery: An in vitro assessment study

IRBM ◽  
2013 ◽  
Vol 34 (4-5) ◽  
pp. 319-321 ◽  
Author(s):  
Z. Dib ◽  
G. Dardenne ◽  
N. Poirier ◽  
P.-Y. Huet ◽  
C. Lefevre ◽  
...  
Keyword(s):  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Assessment Study ◽  
In Vitro Assessment

scholarly journals Quantifying discretization errors for soft tissue simulation in computer assisted surgery: A preliminary study

2020 ◽  
Vol 77 ◽  
pp. 709-723 ◽  
Author(s):  
Michel Duprez ◽  
Stéphane Pierre Alain Bordas ◽  
Marek Bucki ◽  
Huu Phuoc Bui ◽  
Franz Chouly ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Preliminary Study ◽  
Discretization Errors

scholarly journals In vitro autoradiographic visualization of occupied estrogen receptors in the rat brain with an iodinated estrogen ligand.

1993 ◽  
Vol 41 (9) ◽  
pp. 1279-1290 ◽  
Author(s):  
M J Walters ◽  
T J Brown ◽  
R B Hochberg ◽  
N J MacLusky
Keyword(s):  
Estrogen Receptors ◽  
Computer Assisted ◽  
Physiological Changes ◽  
Tissue Sections ◽  
Receptor Complexes ◽  
Saturation Binding ◽  
Cell Groups ◽  
Cryostat Sections

Methods have been developed for the selective measurement of occupied estrogen receptors (ER) in brain tissue sections. Cryostat sections of unfixed tissue were incubated with radiolabeled estrogen at physiological temperatures, displacing endogenous receptor-bound estrogen by radioligand and thereby allowing the receptor complexes to be visualized autoradiographically after washing to remove nonspecifically bound steroid. The resultant autoradiographs were analyzed by computer-assisted densitometry. Synthetic 11 beta-methoxy-substituted radiolabeled estrogens gave the best autoradiographic images, as a result of reduced nonspecific labeling, although [3H]-estradiol was also used successfully. With the synthetic ER ligand 11 beta-methoxy 16 alpha-[125I]-iodo-estradiol, exposure times of less than 24 hr generated acceptable autoradiographs; with 3H-labeled estrogens, exposures of 3 months or more may be required. The method is sufficiently sensitive to detect physiological changes in ER occupation and to allow determination of receptor affinities and saturation binding capacities in discrete cell groups identified in sections from individual animals.

scholarly journals PENENTUAN PROFIL ELUSI IODIUM-125 SEBAGAI PERUNUT UNTUK TUJUAN RADIOIMMUNIASSAY (RIA)

2016 ◽  
Vol 17 (2) ◽  
pp. 59
Author(s):  
Maiyesni Maiyesni ◽  
Mujinah Mujinah ◽  
Dede Kurniasih ◽  
Witarti Witarti ◽  
Triyatno Triyatno ◽  
...  
Keyword(s):  
Radiochemical Purity ◽  
Elution Profile ◽  
Alkaline Ph ◽  
Dose Calibrator ◽  
Purity Level ◽  
Before And After ◽  
Preliminary Study ◽  
Iodine 125

Manfaat iodium-125 (125-I) sudah banyak diketahui. 125-I  dapat digunakan antara lain sebagai perunut dalam teknik Radioimmunoassay (RIA) untuk deteksi dini berbagai penyakit kanker, menentukan kesuburan hewan ternak serta cemaran mikotoksin di dalam pangan secara invitro.  125-I  yang dibutuhkan dalam teknik ini disamping harus mempunyai kemurnian radiokimia > 95%,  konsentrasi radioaktifitas   juga tinggi, sehingga volume  125-I  haruslah sekecil mungkin. Dengan demikian perlu dipelajari profil elusi 125-I dari kolom reduktor Jones saat proses peningkatan kemurnian  radiokimia. Penelitian ini bertujuan untuk menentukan volume optimal  eluat dengan efisiensi dan kemurnian radiokimia yang dapat diterima. Pada penelitian ini kondisi kolom yang dipilih adalah kolom dengan pH basa. Kolom reduktor Jones yang mengandung  125-I dielusi dengan larutan  NaOH 0,01N secara  fraksinasi volume 1 ml. Radioaktifitas  masing-masing fraksi diukur menggunakan  dose calibrator. Penentuan kemurnian radiokimia dilakukan pada fraksi yang memiliki radioaktifitas  tertinggi dan fraksi gabungan  dengan  metode kromatografi kertas. Radioaktifitas  tertinggi ditunjukkan pada  fraksi kedua  yaitu  16,59  mCi dengan efisiensi 33,95% dan fraksi gabungan yaitu 50,19 mCi dengan efisiensi 92,26%. Kemurnian radiokimia 125-I bulk, fraksi kedua dan fraksi gabungan berturut-turut adalah 41,50, 97,5  dan  98,50%.  Volume optimal eluat adalah 7 ml serta  pH 125-I sebelum dan sesudah fraksinasi adalah 10 -11.  Determination of  Elution Profile the Iodine-125 as a tracer for Radioimmunoassay (RIA). The benefits of the Iodine-125 (125I ) isotope was well known. 125I are used as radiotracer in Radioimmunoassay (RIA) technique for early detection of cancer, determine of hormone content which related with fertility of livestock and also for contamination detection of mycotoxins on food by in vitro.  125I which is needed in this technique not only must have high radiochemical purity above 95% but also high radioactivity concentration, so that  125I volume which is use must as little as possible. Therefore, 125I elution profile for increasing radiochemical purity using a reductor Jones column should be studied. Aim of this study is to determine the optimum volume of eluate which have efficiency and radiochemical purity that can be accepted. The preliminary study was conducted to determine the optimal conditions of reductor Jones  column. Reductor Jones column is conditioned on neutral and alkaline pH. At this elution study, the columns conditions selected is alkaline pH. Reductor Jones column which containing 125I eluted with NaOH 0,01 N solution by fractionated in 1mL. The radioactivity of each fraction is measured with dose calibrator.  Determination of the radiochemical purity of carried out on the fraction which have the highest radioactivity and the combined fractions using paper chromatography. Highest radioactivity is shown in the second fraction at 16,59 mCi with efficiency 33,95%  and combined fractions at 50,19 mCi with efficiency 92,26%. The radiochemical purity of 125-I bulk, second fraction and combined fractions are 41,50%, 97,5 % dan  98,50%, respectively.  Optimum fraction is 7 mL and pH of 125-I before and after fractination are 10-11. By studying the elution profile can be known that the optimal volume is the smallest total volume of eluent with efficiency and radiochemical purity level that can be accepted. 

scholarly journals Computer-Assisted Surgery for Screw Insertion into the Distal Sesamoid Bone in Horses: An In Vitro Study

2006 ◽  
Vol 35 (7) ◽  
pp. 626-633 ◽  
Author(s):  
DIEGO GYGAX ◽  
CHRISTOPH LISCHER ◽  
DAGMAR NITZEL ◽  
MELANIE ROSSOL ◽  
JOERG A. AUER
Keyword(s):  
In Vitro Study ◽  
Computer Assisted Surgery ◽  
Vitro Study ◽  
Computer Assisted ◽  
Sesamoid Bone ◽  
Screw Insertion ◽  
Distal Sesamoid Bone

scholarly journals Comparison of Computer Assisted Surgery with Conventional Technique for Treatment of Abaxial Distal Phalanx Fractures in Horses: An In Vitro Study

2008 ◽  
Vol 37 (1) ◽  
pp. 32-42 ◽  
Author(s):  
MELANIE ROSSOL ◽  
DIEGO GYGAX ◽  
JULIANE ANDRITZKY-WAAS ◽  
GUOYAN ZHENG ◽  
CHRISTOPH J. LISCHER ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Computer Assisted Surgery ◽  
Conventional Technique ◽  
Distal Phalanx ◽  
Vitro Study ◽  
Computer Assisted
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